Text preview for : EN7410 (L7c service manual-1A-final1006).pdf part of AOC EN7410 Monitor LCD MONITOR LCD AOC MODEL EN7410
Back to : EN7410 (L7c service manua | Home
L7C Monitor
Service Menu for the EN7410
August,23, 2004 Revision: 1A
Issued By: Checked By:
_________________________________________________________________________________
The release of this document is under controlled by the company. Any extra copy of this document must be written permission by the product manager.
_________________________________________________________________________________
L7c service manual-1A-final1006.doc of 56
Page1
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
- Techview Confidential
History Page
Reversion 1A Date 8/23/2004 Remark 1ST Released.
L7c service manual-1A-final1006.doc of 56
Page2
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
Content
Chapter A. WARNING B. SAFETY PRECAUTIONS 1. DIMENSIONS 2. GENERAL INFORMATION 3. SPECIFICATIONS 4. THEORY OF OPERATION 5. DISASSEMBLY INSTRUCTIONS 6. CONTROL LOCATION 7. NECESSARY EQUIPMENT LIST 8. BLOCK DIAGRAM 9. CONDUCTOR VIEW 10. SCHEMATIC DIAGRAM 11. EXPLODED VIEW 12. TROUBLE SHOOTING HINTS 13. REPLACEMENT PARTS LIST 14. AUTO BALANCE Page 4 5 6 8 10 19 22 27 36 37 39 41 48 49 52 56
L7c service manual-1A-final1006.doc of 56
Page3
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
WARNING
This service information is designed for experienced repair technicians only and is not designed for user by the general public It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt within this service information by anyone else could result in serious injury or death.
L7c service manual-1A-final1006.doc of 56
Page4
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
SAFETY PRECAUTIONS
1. CAUTION: No modification of any circuit should be attempted. Service worker should only be performed after going through to familiar with all of the following safety checks and servicing guidelines. 2. SAFETY CHECK Care should be taken while servicing this LCD display. Because of the high voltage is used in the inverter circuit. These voltages are exposed in such areas as the associated transformer circuits. 3. POWER SUPPLY REQUIREMENTS The internal power converter with the attached AC power cord is necessary for the LCD monitor. Any attempt to replace another power converter could result in serious of problems on the display. 4. LEAKAGE CURRENT HOT CHECK 4-1 Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during this check. 4-2 Connect a 1500 ohm, 10 watt resistor, paralleled by a 0.15uF capacitor between each metallic part and a good earth ground. 4-3 Use an AC voltmeter with 1000 ohm / volt or more sensitivity and measure the AC voltage across the combination 1500 ohm resistor and 0.15uF capacitor. 4-4 Move the resistor connection to each exposed metallic part and measure the voltage. 4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement. 4-6 Voltage measured must not exceed 1.5 volt RMS, from any exposed metallic part to the ground. A leakage current tester may be used in the above hot check, in which case any circuit measured must not exceed 1 milliamp. In the case of a measurement exceeding the 1 milliamp value, the rework is required to eliminate the chance of a shock hazard.
AC VOLTMETER
V
0.15u .
To Metal Parts
1500
10W
Earth Ground
L7c service manual-1A-final1006.doc of 56
Page5
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
1. DIMENSIONS (Unit:mm)
1.1 Front View
1.2 Top View
L7c service manual-1A-final1006.doc of 56
Page6
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor 1.3 Rear View
1.4 Side View
L7c service manual-1A-final1006.doc of 56
Page7
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
2. GENERAL INFORMATION
2.1. OUTLINE
This monitor is 17" multi-scan color LCD display with the following features. OSD (on screen display ) control allows easy user adjustment . Power saving function, which helps saving energy, is also one of the highlights of this model.
2.2. FEATURES 2.2.1 Power Saving
Built in Power Saving function based on VESA-DMPS standard. Power energy shall be saved by controlling the circuit in accordance with power save signal from computer. 2.2.2 OSD (on screen display) function OSD (3 Languages ) function is excellent and new man-machine interface. Anyone is able to set up the picture as the like through OSD menu. 2.2.3 Self Test function Self-Testing picture comes out by pushing any key in the case of no-connection with computer or power saving operation. This function shows if monitor is alive or not and can be used for self aging test. 2.2.4 Ergonomic design Low emission design to meet MPR II and Energy Star. 2.2.5 Multi scan with digital technology 8 bits micro controller controls the circuit operation to meet with wide range signal of Fh=31~83 kHz and Fv= 56~75 Hz. So VGA720x400, VGA640x480, SVGA800x60, XGA 1024x768 and SXGA 1280x1024. 2.2.6 Factory preset The product has 25 memory modes in total. 16 modes are preset and 9 modes are user definable. 2.2.7 Fine dot pitch LCD panel with a fine dot pitch (Horizontal: 0.264 mm / Vertical: 0.264 mm) 2.2.8 Superior display performance High contrast Ratio : 450 : 1 (typ.) and 300:1 (min.) High brightness Wide view angle : 300 cd / m2 (typ.) and 240 cd/m2l : 140 / 120 degrees (H/V)
2.2.9 Special function VESA DDC2B ( Display Data Channel ) Compatible
L7c service manual-1A-final1006.doc of 56
Page8
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
3. SPECIFICATION
3.1. Outline 3.1.1 Front Indication: MENU , UP, Down,POWER SW, LED (Green/Amber) LEFT, RIGHT, SELECT/AUTO are located on the front panel. 3.1.2 VGA D-SUB and AC inlet are located on the back side cabinet. 3.1.3 OSD menu includes the following function. CONTRAST, BRIGHTNESS, H.POSITION, V.POSITION COLOR-TEMPERATURE, CLOCK, PHASE, LANGUAGE, POWER-ON-RECALL,OSD POSITION AND INFORMATION ON/OFF. 3.1.4 CONTRAST and BRIGHTNESS can be directly controlled with UP / Down key.
3.2. MECHANICAL SPECIFICATIONS 3.2.1 Dimension Height : 381mm ( 15") Width : 426 mm ( 16.8") Depth : 199 mm ( 7.8") 3.2.2 Net Weight :4.0 kg ( 8.8 lbs) 3.2.3 Maximum Viewable Area: Diagonal 431.8mm(17") 3.3. PANEL SPECIFICATIONS Manufacturer Manufacturing country ID no Resolution Display surface Pixel pitch in mm Chipset Number of colors Inverter/Power board Backlight Sharp Japan
LQ170E1LG11
1280 x 1024 Anti-glare 0.264 x 0.264 Realtek RTD2023 6 bit data + FRC FSP 4 CCFL
L7c service manual-1A-final1006.doc of 56
Page9
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
3.4. CONNECTORS 3.4.1 AC inlet : CEE22 typed connector 3.4.2 Audio : Line-in receptacle (optional)
J1 1 2 3 PHONEJACK STEREO
3.4.3 Attached video signal receptacle
15 pin standard D-Sub connector The PIN assignment of the 15 pin mini D-SUB connector / cable is as follows:
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Signal Red Green Blue No Pin Ground Ground Red Ground Green Ground Blue +5 V for DDC Ground No Pin SDA (DDC Data) H Sync V Sync SCL (DDC Clock)
L7c service manual-1A-final1006.doc of 56
Page10
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
3.5. ELECTRICAL SPECIFICATIONS
3.5.1 Standard conditions Display area (HxV) Video signal level Contrast Brightness Ambient Input voltage Warming up time Display mode 338 x 270 mm 0.7 Vpp Max. Max. 25 +/- 5 C degrees AC 220,50Hz More than 30 1280 x 1024
3.5.2 POWER 3.5.2.1 Power supply AC-DC adapter Input voltage Input current Frequency range Inrush current
Maximum power consumption: Power Line Surge
100 - 240 V max. 2 Arms 50Hz +/- 3Hz, 60Hz +/- 3Hz Shall be less than the ratings of critical components (including fuse, rectifiers and surge limiting device) for all conditions of line in voltage. 50 Watts No loss of information or defect with a minimun of 1 half wave missing per second
3.5.2.2 Power Management The Power Management System complies to Energy Star standards.
MODE H-SYNC V-SYNC COLOR OF POWER LED On Off Active Inactive Active Inactive Green Amber POWER CONSUMPTION < 40 Watts < 1.0 Watts < 5 seconds RECOVERY TIME
Remark: In case of "no signal" Power LED must be amber. At first power on w/o signal LED will be green + message on screen.
L7c service manual-1A-final1006.doc of 56
Page11
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
3.5.3 Signal level and input impedance 3.5.3.1 Video Signal level This LCD display is adjusted at the factory using 0,7 Vp-p Video signal. 3.5.3.2 Sync Signal level H/V Separate, composite sync ,TTL level 3.5.3.3 Input impedance Video input : 75 ohms Sync input 3.5.4 Display Area Display area : 338 x 270 mm 3.5.5 Preset Timings The product has 25memory modes in total. 16 modes are preset and 9 modes are user definable.
MODE NO. RESOLUTION 1 720 x 400 2 640 x 480 3 640x480 4 640 x 480
: > 1 k ohms
Dot clock(MHz)
28.321
25.175
30.240
31.500
fh A ( us ) B ( us ) C ( us ) D ( us ) E ( us )
31.469kHz 31.78(900dots) 3.813(108dots) 1.907(54dots) 25.42(720dots) 0.636(18dots)
31.469kHz 31.778 (800 dots) 3.813 (96 dots) 1.907 (48 dots) 25.422 (640 dots) 0.636 (16 dots)
35.0kHz 28.571(864 dots) 2.116 (64 dots) 3.175 (96 dots) 21.164 (640 dots) 2.116 (64 dots)
37.861kHz 26.413 (832 dots) 1.270(40 dots) 4.064(128 dots) 20.317(640 dots) 0.762(24 dots)
fv O (ms )
70Hz(70.087) 14.27(449 lines)
60Hz (59.940) 16.683 (525 lines )
66.7 HZ (66.667) 15.000 (525 lines )
72.809Hz 13.735(520 lines)
P ( ms ) Q (ms ) R ( ms )
0.064(2 lines) 1.112(35 lines) 12.71(400 lines)
0.064 (2 1.049 (33
lines ) lines )
0.086 (3 1.114 (39
lines ) lines )
0.079(3 lines) 0.739(28 lines) 12.678(480 lines)
15.253 (480 lines )
13.714 (480 lines )
S ( ms ) SYNC. H/V POLARITY SEP . SYNC
0.384(12 lines) -/+
0.317 ( 10 lines) -/-
0.086 (3 lines ) +/+ Or -/-
0.237(9 lines) -/-
Y
Y
Y
Y
L7c service manual-1A-final1006.doc of 56
Page12
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
MODE NO. RESOLUTION 5 640 x 480 6 800 x 600 7 800 x 600 8 800 x 600
Dot clock(MHz)
31.500
36.000
40.000
49.500
fh A ( us ) B ( us ) C ( us ) D ( us ) E ( us )
37.500kHz 26.667(840 dots) 2.032 (64 dots) 3.810 (120 dots) 20.317 (640 dots) 0.508 (16 dots)
35.16kHz 28.44(1024 dots) 2.00(72 dots) 3.56(128 dots) 22.22(800 dots) 0.67(24 dots)
37.879kHz 26.40 (1056 dots)
46.875kHz 21.333 (1056dots) 1.616 (80 dots)
3.200 (128 dots) 2.200 ( 88 dots) 20.00 ( 800 dots) 1.000 (40 dots)
3.232 (160 dots) 16.162 (800 dots) 0.323 (16 dots)
fv O (ms )
75Hz (75) 13.333 (500 lines)
56.25 17.78(625 lines)
60Hz (60.316) 16.58 (628 lines)
75Hz (75.000) 13.333 (625lines)
P ( ms ) Q (ms ) R ( ms ) S ( ms ) SYNC. H/V POLARITY SEP . SYNC
0.080 (3 lines) 0.427 (16 lines) 12.80 (480 lines) 0.027 ( 1 line )
0.06(2 lines) 0.63(22 lines) 17.07(600 lines) 0.03( 1 line) +/+
0.106 (4 lines) 0.607 (23 lines) 15.84 (600 lines) 0.026 (1 line ) +/+
0.064 (3
lines)
0.448 (21 lines) 12.80 (600lines) 0.021 (1 line ) +/+
-/-
Y
Y
Y
Y
MODE NO.
RESOLUTION
9
800 x 600
10
832 x 624
11
1024 x 768
12
1024 x 768
Dot clock(MHz)
50.000
57.283
65.000
75.000
fh A ( us ) B ( us ) C ( us ) D ( us ) E ( us )
48.077kHz 20.80 (1040dots) 2.400 ( 120 dots) 1.280 (64 16.00 (800 dots) 1.120 (56 dots)
49.72kHz 20.11(1152 dots) 1.12(64 dots) dots) 3.91(224 dots) 14.52( 832 dots ) 0.56(32 dots )
48.363kHz 20.677(1344 dots) 2.092(136 dots) 2.462(160 dots) 15.754(1024 dots) 0.369(24 dots)
56.48kHz 17.71(1328 dots) 1.81(136 dots) 1.92(144 dots) 13.65(1024 dots) 0.32(24 dots)
fv
72Hz (72.188)
74.55Hz
60.004Hz
70.07Hz
L7c service manual-1A-final1006.doc of 56
Page13
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
O (ms ) P ( ms ) Q (ms ) R ( ms ) S ( ms ) 13.85 (666 lines) 0.125 (6 lines) 0.478 (23 lines) 13.41(667 lines) 0.06(3 lines) 0.78(39 lines) 12.55 (624 lines) 0.02(1 line) 16.666(806 lines) 0.124(6 lines) 0.600(29 lines) 15.880(768 lines) 0.062(3 lines) 14.27(806 lines) 0.11(6 lines) 0.51(29 lines) 13.60(768 lines) 0.05(3 lines)
12.48 (600 lines) 0.770 ( 37 line )
SYNC. H/V POLARITY SEP . SYNC
+/+
+/+
-/-
-/-
Y
Y
Y
Y
MODE NO.
RESOLUTION
13
1024 x 768
14
1280 x 1024
15
1280 x 1024
16
1152 x 864
Dot clock(MHz)
78.750
108.000
135
108.00
fh A ( us )
60.02kHz 16.66(1312 dots)
63.981kHz 15.630 (1688 dots)
79.976KHz 12.504 (1688 dots)
67.5 KHz 14.815(1600 dots)
B ( us ) C ( us ) D ( us )
1.22 (96 dots) 2.23 (176 dots) 13.00 (1024 dots)
1.037 (112 dots) 2.296 (248 dots) 11.852 (1280 dots)
1.067 (144 dots) 1.837 (248 dots) 9.481 (1280dots)
1.185(128 dots) 2.370(256 dots) 10.667(1152 dots)
E ( us )
0.20 (16 dots)
0.444 (48 dots)
0.119 (16 dots)
0.593(64 dots)
fv O (ms )
75.03Hz 13.33 (800 lines)
60.020Hz 16.661 (1066 lines)
75.025 Hz 13.329 (1066 lines)
75.06 Hz 13.333(900 lines)
P ( ms ) Q (ms ) R ( ms )
0.05 (3 lines) 0.47 (28 lines) 12.80 (768 lines)
0.047 ( 3 lines) 0.594 ( 38 lines)
0.038 (3 lines) 0.475 (38 lines) 12.804(1024 lines)
0.044(3 lines) 0.474(32 lines) 12.800(864 lines)
16.005 (1024 lines)
S ( ms ) SYNC. H/V POLARITY SEP . SYNC
0.02 (1 lines) -/-
0.016 (1 line ) +/+
0.013 (1 lines) +/+
0.015(1 lines) +/+
Y
Y
Y
Y
L7c service manual-1A-final1006.doc of 56
Page14
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
A B C D E
: H-Total : H- Sync width : H- Back porch : H- Video width : H- Front porch
O P Q R S
: V-Total : V- Sync width :.V- Back porch : V- Video width :.V- Front porch
L7c service manual-1A-final1006.doc of 56
Page15
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
3.5.6 General performance 3.5.6.1 Maximum pixel clock 135 MHz 3.5.6.2 Maximum luminance
Test conditions: 100 % all white pattern, brightness and contrast set to maximum.
typical: min.: 300 cd/m2 240 cd/m2
3.5.6.3 Brightness variation
Value Condition s
75 % Variation (C / A x 100) Display image: Full white Brightness : Maximum Contrast : Maximum A: Luminance at center
3.5.6.4 Contrast ratio (CR)
Value Conditions
CR= B / A Contrast : Maximum Brightness : max B: Full white pattern A: Full black pattern
3.6. ENVIRONMENTS The environmental conditions are in accordance to IEC 721 Operating: Temperature: Humidity: Height: Air pressure: Storage (unpacked) Temperature: Humidity: -20°C - +60° C 10% - 85% noncondensing and less than 39°C 5°C - +40° C 20% - 80% noncondensing and less than 39°C 3000 m 700 - 1060 mbar
L7c service manual-1A-final1006.doc of 56
Page16
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
Height: Air pressure: Transport (packed) Temperature: Humidity: Height: -20°C - +60° C 10% - 85% noncondensing and less than 39°C 12000 m 3000 m 700 - 1060 mbar
3.7. REGULATORY STANDARDS 3.7.1 Safety standards This monitor applies to various safety & EMI standards May refer to the logo label 3.7.2 EMC standards
FCC class B part 15 (USA)
3.8. OTHERS UL, TUV/GS Certificate, CE Report,CSA 3.9. P0WER CORD
q North America NEMA 5-15 q Detachable type q Length: 6ft q Color: Black q Non shielded type
3.10. SIGNAL CABLE Signal cable with Mini D-Sub 15P connectors. 3.11. RELIABILITY > 70000hrs (demonstrated MTBF)
Length : 1.8 meter.
L7c service manual-1A-final1006.doc of 56
Page17
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
4. THEORY OF OPERATION
This section describes the function of the LCD monitor per functional block. This model includes MB board(including audio board function inside), inverter board, adapter and button board.
4.1 MB BOARD The MB board is a two-layer, single-landed design with ground and ground planes provided. The VGA cable is a signal cable that contains video signal, sync signal and DDC signal from PC VGA adapter This system board consists of 3 functional areas : flat panel controller, Micro controller and audio controller.
4.1.1 Flat panel controller...... RTD2023 (U6)
The heart of the system board is RTD2023. The RTD2023 is a graphics processing IC for LCD monitor. It provides some control functions required for LCD panel. On-chip functions include a high-speed triple-ADC , PLL, high sacling engine and OSD controller. a) Clock Generation : Crystal Input Clock (XTALI and XTAL). This is the input pair to an internal crystal oscillator and corresponding logic. Scalar 24.576 MHz and MCU 14.318MHz crystal are recommended. b) Hardware Reset Hardware Reset signal is generated by RTD2023 self. It is built-in power reset circuit and send LOW reset signal(U6,P56)) to MCU(P7). c) Analog to Digital Converter The RTD2023 chip has three ADC's (analog-to-digital converters), one for each color (red, green and blue) . The analog RGB signals are connected to RTD2023 as described below Pin Name Red + Red Green + Green Blue + Blue SOGIN Pin Number 30 31 34 35 30 31 33
L7c service manual-1A-final1006.doc of 56
Page18
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
d) OSD : The RTD2023 has a fully programmable, high-quality OSD controller. The on-chip 11.25K static RAM stores the cell map and the cell definitions. e) Panel Power Sequencing (PANEL_PW12, VRMT ) ( Pin 16~17) The MYSON MTV312 has two dedicated outputs PANEL_PW12 and VRMT (Pin16 and Pin17) to control LCD power sequencing once data and control signals are stable. f) Inverter Brightness control (VBRI) (Pin 113) The RTD2023 has one PWM output VBRI (Pin113) to control Inverter Brightness Range. g) Panel LVDS interface (Pin 73~82,Pin85~94) The RTD2023 driver interface is highly programmable. It supports LVDS port for panel.
4.1.2 Micro controller......MTV312 (I1)
The MYSON MTV312 microcontroller serves as the system microcontroller. That is , it programs the RTD2023 and manages other devices in the system such as the keypad, the backlight, LED and audio general purpose input/output pins. Pin number 21 22 23 24 25 16 29 28 19 13 14 1 42 41 40 26 9 27 2 3 34 Pin name P1.3 P1.4 P1.5 P1.6 P1.7 P6.2/AD2 P3.0/RXD/HSCL P3.1/TXD/HSDA P3.2/INT0 P3.4/T0/ISDA P3.5/T1/ISCL P5.2/DA2 P5.3/DA3 P5.4/DA4 P5.5/DA5 P6.1/AD1 P6.3/AD3 P6.0/AD0 DA1/P5.0 DA0/P5.0 DA6/P5.6 Pin function SDIO2 SDIO3 RTD_SDO/SDI RTD_SCLK RTD_SCSB PANEL_PW12 DDC_SCL/TXD(DEBUG) DDC_SDA/RXD(Debug) NC IICSDA IICSCL PWR(Soft power) UP DOWN RIGHT LED_G MUTE(OPTIONAL) LED_R SEL MENU LEFT
L7c service manual-1A-final1006.doc of 56
Page19
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
4.1.3 Audio controller TDA7496L (U9)
(optional) The TDA7496L is a stereo 2W+2W class AB power amplifier. Features of the TDA7496L include linear volume(pin6), Stand-by(pin11) and mute(pin12) functions.
Audio output characteristics
Audio amplifier Maximum Audio Output Power Line Input Impedance
ST TDA7496 1W 2 @<3% Distortion , Speaker 1W2 10K ohm
4.2 Power Module The power module includes a Inverter and Power regulator. The electrical specification described as followings:
4.2.1 Power characteristics.
Input
Rated Input Voltage Operation Input Voltage Range Max Input AC Current Efficiency
100~240 Vac,50/60Hz 90~264 Vac,47~63Hz < 2.0A 12Vdc load 3.25A Brightness Voltage from 0~3.3Vdc ON/OFF Voltage : High(3.3Vdc)/Low(0Vdc)
Brightness Voltage(Vadj) On/Off Voltage Output Static Output Characteristics
0.3Vdc(Max) ~ 3.0Vdc(Min) High(1.2~5.5Vdc)/Low(<1.2Vdc) 12V/3.25A Output : 11.4Vdc ~ 12.6Vdc
4.2.2 Inverter output characteristics.
Rated Output Kick-off Voltage Rated output Voltage Rated Output Frequency Rated Output Current per tube
1500 Vrms 725Vrms 40 ~ 60 Khz 7mArms
4.2.4 Power module of connector definition ;
CN110 ; Pin 1 & 2 ----> Vdc Output ( 12V +/- 5%) Pin 3 & 4 ---------> GND Pin 5 ---------> Brightness Control Voltage L7c service manual-1A-final1006.doc of 56 Page20
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Monitor
Pin 6 ---------> On /Off ( "High" set Lamp on )
CN1 ~ CN4 ; Pin 1 ---------> HV ( High Voltage for CCFL ) Pin 2 ---------> Return ( Low Voltage for CCFL )
L7c service manual-1A-final1006.doc of 56
Page21
- Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
5. DISASSEMBLY INSTRUCTIONS
1.Stand removal 1) remove 4 pcs screws as shown "1" from the hinge cover 2) remove the stand
L7c service manual-1A-final1006.doc Page22 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C 2.Rear cover removal 1) remove 3 pcs screws as shown "1" from the rear cover 2) remove the raer cover
Monitor
L7c service manual-1A-final1006.doc Page23 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C 3.PCB shielding removal 1) to remove 4 screws between PCB shielding and left/right brackets,as shown "1" 2)to mover LCD-MB cable and button BD cable
Monitor
L7c service manual-1A-final1006.doc Page24 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
4. Scaler board and power board removal 1) to remove standoffas shown "1" 2) to remove power mylar, as shown "2". 3) to remove 7 screws, as shown "3". 4) to remove screw, as shown "4".
L7c service manual-1A-final1006.doc Page25 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
L7c service manual-1A-final1006.doc Page26 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
5. Front bezel removal 1) to remove 4 screws as shown "1".
L7c service manual-1A-final1006.doc Page27 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
6. CONTROL LOCATION
Button Define
1 MENU
OSD Menu
UP
Trigger OSD Main Menu / Clear OSD 1. Select OSD Main Menu Item 2. Trigger Brightness/Contrast Menu. 1. Select OSD Main Menu Item 2. Trigger Brightness/Contrast Menu. 1. Decrease Menu Item value 1. Increase Menu Item value
2 3 4 5 6 7
SELECT/AUTO POWER
DOWN
LEFT
RIGHT
SELECT/ AUTO 1. Switch OSD Main Menu focus status.
2. Perform Auto configuration.
POWER
Switch Power ON/OFF
L7c service manual-1A-final1006.doc Page28 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
LED Status
Color Green Amber Normal status
Status Description
Enter Sleep Mode status or use "Power + Auto" key enter factory mode
L7c service manual-1A-final1006.doc Page29 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Dialog Overview
l OSD Main Menu
When user press the Menu key under none OSD status will trigger this menu appear for detail parameters adjust. This menu will display about 45 seconds if no one press other key, otherwise will refresh display time
l Brightness/Contrast Menu
When user press the Up or Down keys under none OSD status will trigger this menu appear for Brightness and Contrast adjust. This menu will display about 45 seconds.
L7c service manual-1A-final1006.doc Page30 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Auto Configuration
When user press the select/Auto key under none OSD status will trigger this dialog appear and perform Auto Configuration procedure.
l Mode Information
When Display timing changed this dialog will appear about 5 seconds. And this feature only enable when "Information" indicate On in OSD's other page of main menu.
l No Signal
When user not support the video signal from the cable this dialog will appear about 20 seconds. And then enter the Sleep mode. One special case was in factory mode, the display time length will become 5 seconds for testing the power consumer.
L7c service manual-1A-final1006.doc Page31 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
l Out Of Range
When user input the video signal out of spec this dialog will appear about 20 seconds. And then enter the Sleep mode.
L7c service manual-1A-final1006.doc Page32 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
OSD Main Menu
l
Brightness & Contrast Adjustment Brightness (Up&Down): Adjust the brightness of the display. Contrast (Left&Right): Adjust the difference between
l
Tracking Adjustment
CLOCK: Adjust to minimize any vertical bars or stripes visible on the screen background. The horizontal screen size will also change. PHASE: Adjust to remove any horizontal distortion, and clear or sharpen the image of characters.
l
L7c service manual-1A-final1006.doc Page33 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
l Position Adjustment
V-Position: Adjust the vertical position of the picture. H-Position: Adjust the horizontal position of the picture.
l Color Adjustment
There are four items for color adjustment: 9300K: Bluish white 6500K: Reddish white User defined: Red, Green, Blue. Adjust to set your own color level.
l l l l
L7c service manual-1A-final1006.doc Page34 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
l Other
LANGUAGE: Multi- Language selection OSD POSITION: Adjust the OSD window position on the screen. INFORMATION: Display Information Dialog or not when input timing changed.
l Factory Adjustment
This page only visible in factory mode AUTO BURN : Use the chip set internal pattern for hot running monitor panel and inverter. And display a Timer dialog for count. AUTO COLOR Perform Auto Balance measurement by chip set internal signal. And copy the offsets parameters to other color temparameters. Then force point to Native color temperature and reset contrast & brightness to default value. COLOR UPDATE : Force presently R,G,B offset and gain parameters update to currently temperature memory address. FACTORY RESET : Recall to factory setting and power off immediately. R,G,B OFFSET :
Adjust current RGB cut off level
R,G,B GAIN :
Adjust current RGB Driver value.
DCLK :
Adjust chip set internal frequency spread effect for EMI testing. L7c service manual-1A-final1006.doc Page35 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
7. NECESSARY EQUIPMENT LIST
Item Personal Computer with Windows 98/Me/XP Luminance Meter Minolta CA 210 Video Generator : Chroma 2000,2135,2250 or equivalent like test program(Display Mate) Color Analyzer : Minolta CA210 , Chroma or equivalent Watt / Power Meter 10 Times Magnifier Multimeter Oscilloscope
1 2 3 4 5 5 7 8 9
L7c service manual-1A-final1006.doc Page36 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
8. BLOCK DIAGRAM 8.1 Power module
To Panel lamp
Inverter Output
Voltage Output
12V/3.25A
Power Module
AC Input 90 ~ 264V
L7c service manual-1A-final1006.doc Page37 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
8.2 Main Board
MUTE/VOLUME/VOLUME POWER TDA7496L U9(OPTION) MTV312/I1
Key Control
P3.0/HSCLP3.1/HSDA
P4.0
P5 SDA/P6 SCL
3.3V_ AVDD
VDDC2.5V
TXODD
24C16 (U8)(PARAMETER EEPROM)
VGA SCL/SDA DDC IIC BUS
TXEVEN RESET
Panel U6 RTD2023
LCDVCC
PPWR
VGA Input
VGA RED / GREEN / BLUE
VGA VSYNC / HSYNC
TO PANEL/LVDS INTERFACE
HS / VS
DVI Input (OPTION) 24C02(DDC2) (OPTION)
P3.4/P3.5
L7c service manual-1A-final1006.doc Page38 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
9. CONDUCTOR VIEW Main Board Silkscreen
L7c service manual-1A-final1006.doc Page39 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Button Board Layer Bottom
L7c service manual-1A-final1006.doc Page40 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Button Board Silkscreen
10. SCHEMATIC DIAGRAM Main Board
L7c service manual-1A-final1006.doc Page41 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
5DVCC
Monitor
3
5DVCC D1 1SS355 EC1 10uF/16V C1 0.1u/6 +
C
2
C2 1u/6 U2 5 6 7 8 Q1 NDS9410A/SO R2 GND VCC12 0/1206 7 6 5 C8 0.1u/6 8 BOOST IS VCC FB AIC1563 DC DE CF GND 1 2 3 4 C9 GND R4 120p/6 R5 47/6 D2 1SS355 330K/6 U1 3 VIN AIC1117CY 2 VOUT R3 200/6 1% GND 3DVCC 3DVCC
1
E
RTD 3DVCC ADC_ 3AVCC RTD 3PVCC LVDS_3AVCC
10uF/16V
0.1u/6
EC2 10uF/16V
3AVCC1
C7 0.1u/6
EC3
C3
+
+ R6 330/6 1%
1
R7 240K/6 1%
4 3 2 1
3PVCC
3AVCC2
GND GND R11 C10 R12 1K/6 1% 3K/6 1% 2200p/6
1 R9 1K/6
2 Q2 MMST3906 3 U3 AIC1117CY 2 VIN VOUT GND
2.5DVCC 2.5DVCC R15 200/6 1%
3 L2 2 47UH 3 D3 1 EC4 330u/16V 10uF/16V
10uF/16V
+ EC5
+ EC6
GND GND
R17 200/6 1%
R11:3K 1% ohm, R12:1K 1% ohm -->output:5V; R11:3.6K 1% ohm, R12:2.2K 1% ohm-->output 3.3V
RB081L-20 1
C12 0.1u/6
1
RTD 2.5DVCC
U10 U3 layout 2004/4/16
GND
CN1
CONN 4x2-R 12V FUSE1 0 1
R1,L1
VCC12 2 C4 0.1u/6 C6 330u/16V C5 0.1u/6
1 3 5
2 4 6 8
RTD 3DVCC ADC_ 3AVCC RTD 3PVCC
3DVCC 3 3AVCC1 3PVCC 3AVCC2 L29 FEB/1206/NC 2
U10 VIN VOUT 1
2.5DVCC 2.5DVCC
3DVCC 3DVCC R8 R10 0/6 10K/6 Q3 MMST3906 L3 2 1U/6 1 10K/6 C11 0.1U/6 R14 10K/6/NC 3DVCC R13 1K/6 VRMT
RTD 2.5DVCC
GND AIC1739/NC
LVDS_3AVCC
3.3V-->2.5V regulator for 3.3V system power, no 5V 2004/4/14
Modify
3DVCC NC/CX201209805/8 VCPU L27 Q18 MMBT3906
C102
R16 1K/6 R18 C13 1U/8 4.7K/6 3
D30 DSUB_5V 1N4148
D31 1N4148
CX201209805/8 L28 C100 0.1u/6 C101 NC/6
Q4 SN7002E 2
R143 4.7K/6 VBRI 3DVCC
Q19 TECHVIEW MMBT3906 R144 4.7K/6 Title
1
PROJECT : L7C/L5TL-C POWER
Size Document Number
GND
DGND Date:
DISPLAY
Monday , September 06, 2004 Sheet 1 of 5
Rev B
L7c service manual-1A-final1006.doc Page42 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
PA G E1 V G A IN P UT
DDC_SDA 16 CN2 11 RED-IN 1 6 2 7 3 8 4 9 5 10 17 RED+IN RED-IN GREEN+IN GREEN-IN BLUE+IN BLUE-IN L9 0/6 R26 R27 DSUB_5V GREEN-IN 75/6/F C20 NC R28 R29 100/6 100/6 C21 C22 0.047u/6 0.047u/6 GREENSOGIN 100/6 C19 0.047u/6 GREEN+ L8 0/6 R23 R24 75/6/F C17 NC R25 100/6 C18 0.047u/6 RED100/6 C16 0.047u/6 RED+
Monitor
RE D+IN
DDC _SDA 12 IN-H IN-V
13 14
G RE E N+IN
DEL L11,C32,U6,R51,R52
2004/6/17
DDC _SCL 15 VGA/NC
DS UB _ 5 V
PIN 10 VGA_CON
DDC_SCL
R30 1M/6 L10 0/6 R31 C24 R32 BLUE-IN 75/6/F NC R33 100/6 C25 0.047u/6 100/6 C23 0.047u/6 BLUE+
G ND
CN3 RED-IN GREEN-IN BLUE-IN 1 3 5 7 9 11 13 + + + + + + + + + + + + + + 2 4 6 8 10 12 14 RED+IN GREEN+IN BLUE+IN GND IN-V DDC_SDA DSUB_5V
B L UE + IN
IN-H DDC_SCL
BLUE-
VGA INPUT IN-H ADC_VCC
L31
0/6 R35 2K/6 C26 10P/6/NC 1 3 R34 100/6 VGAHS AHS D34 Z3.9V
Add D34,D35,L31 2004/6/17
AVS
2
2
RE D+ IN
3
G RE E N+IN 3
B L UE + IN
3
R37 2K/6
C28 22P/6/NC 1
3 D35 Z3.9V
D7 DAN217K/NC
D8 DAN217K/NC
D9 DAN217K/NC
2
DEL D29
2004/6/17
I N-V
R36
100/6
VGAVS
1
1
1
3DVCC
IN-H
3
I N-V
3
DDC_ S DA
3
DDC _ S CL
3
B u s_ P o w e r
D17 D13 Z5.6/NC 1 BAT54C-GS08/NC
D10 Z5.6/NC 1 1
D11 Z5.6/NC 1
D12 Z5.6/NC
C29
0.1U/6/NC
CN4
Add R156~R162 damping RES 2004/4/16
U5 1 2 3 4 NC VCC NC VCLK NC SCK VSS SDA M24C02/NC 8 7 6 5
R44 2K/6/NC
R45 2K/6/NC R46 R47 100/6/NC 100/6/NC
25 RX2RX2+ GND RX4RX4+ SCL SDA VS RX1RX1+ GND RX3RX3+ 5V GND HP RX0RX0+ GND RX5RX5+ GND RXC+ RXC-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
R155 R156 3 D18 DDC2_SCL DDC2_SDA 1 Z5.6/NC 1 3 D19 Z5.6/NC
0 0
T X2 T X2 +
DD C2 _ S CL DD C2 _ S DA
3
D22 Z5.6/NC R157 R158 0 0
3 D23 Z5.6/NC TECHVIEW 1
T X1 T X1 +
3
D20
3
D21 Z5.6/NC 1
B u s_ P o we r
R48 R49 10K/6NC 100/6NC 1
Z5.6/NC
Hot_plug
R159 R160
0 0
T X0 T X0 +
R161 R162 3
0 0
T X C+ T X C-
3
3
3
C31 1U/6NC 1 26
Z5.6/NC
D25 Z5.6/NC 1 1
D26 Z5.6/NC 1
D27 Z5.6/NC 1
3
D24
C30 0.1U/6/NC
1
PROJECT : L7C/L5TL-C
D28 Z5.6/NC R50 10K/6NC Title
VGA AND DVI INPUT
Size Date: Document Number
DVI-D/NC
DISPLAY
Monday , September 06, 2004 Sheet 2 of 5
Rev B
L7c service manual-1A-final1006.doc Page43 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
3DVCC R3DVCC L12 FEB_0805 C35 0.1u/6 C36 0.1u/6 C37 0.1u/6 C38 0.1u/6 C39 0.1u/6 C40 0.1u/6 C41 0.1u/6 C42 0.1u/6 C43 0.1u/6 C44 0.1u/6 C34 10uF /16V C45 0.1u/6 C46 10uF /16V C 47 0.1u/6 J2 J1 C33 22pF/6 XO Y1 24.576MHz BB3P BB3N 120 109 96 84 72 57 48 121 110 95 83 71 58 49 127 98 69 45 128 97 70 44 BB2P BB2N BB1P BB1N BCLKP BCLKN BG3P BG3N R XOIN0R XOIN0+ R XOCKIN R XOCKIN + R XOIN1R XOIN1+ R XOIN2R XOIN2+ R XOIN3R XOIN3+ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 RXEIN0RXEIN0+ RXECKINRXECKIN+ RXEIN1RXEIN1+ RXEIN2RXEIN2+ RXEIN3RXEIN3+ AG2P AG2N AG1P AG1N AR3P AR3N AR2P AR2N AR1P AR1N F XDIO XSTB POL BXDIO Y C LK Y D IO Y OE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 R2.5DVC C L13 FEB_0805 2.5DVCC 2.5D VCC
Monitor
C48 3PVCC
R53 NC 22pF/6
XI
U6
Ground Ground Ground Ground Ground Ground Ground
XO XI L14 F EB_0805 C 49 0.1u/6 R 54 4.7K/6 C 50 10uF /16V 3PVCC
1 2 4 5 3 8 6 7 9 12 14 15 17 18 20 21 23 24 11 13 19 26 10 16 22 25
2.5V Ground 2.5V Ground 2.5V Ground 2.5V Ground
Power Power Power Power Power Power Power
Power Power Power Power
3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V
C 51 0.1u/6
C 52 0.1u/6
DPLL_VDD APLL_VDD DPLL_GND APLL_GND PLL_TEST1 PLL_TEST2
3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V
2.5V 2.5V 2.5V 2.5V
XO XI
TCON [12]/COU T/PWM2 PWM0/R EF CLK TCON [13]/COU T/PWM2
113 112 55
VBRI VOLU ME
PLL_GND
TMDS_AVCC R 55 4.7K/6/NC R56 1K/6 TX2+ TX2TX1+ TX1TX0+ TX0TXC+ TXCTMDS_AVCC RX2P RX2N RX1P RX1N RX0P RX0N RXCP RXCN
R57 NC
R58 3AVCC2 4.7K/6 3AVC C2 C54 0.1u/6 L15 F EB_0805 C55 0.1u/6
TMDS_TST/PWM1 EXT_R ES RX2P RX2N RX1P RX1N RX0P RX0N RXCP RXCN TMDS_VD D TMDS_VD D TMDS_VD D TMDS_VD D TMDS_GND TMDS_GND TMDS_GND TMDS_GND B+ BSOG/ADC _TEST G+ GR+ RAD C_VD D AD C_VD D AD C_VD D SCLK SDIO[0] TCON[4]/SDIO[1] TCON[3]/SDIO2] TCON[2]/SDIO[3]/PWM2 SCSB RESET# AD C_REFIO AD C_GND AD C_GND AD C_GND AD C_GND AH S AVS
AR1N AR1P/TC ON[0] AR2N /TC ON[1] AR2P/TC ON[5] AR3N /TC ON[6] AR3P/TC ON[7] AG1N /TC ON[8] AG1P/TC ON[9] AG2N /TC ON[10] AG2P/TC ON[11]
108 107 106 105 104 103 102 101 100 99
AR1N AR1P AR2N AR2P AR3N AR3P AG1N AG1P AG2N AG2P
Near to Chip
RTD2523/RTD2023
C56 0.1u/6
C57 0.1u/6
C53 + 22uF/16V
C58 0.1u/6
BG3N BG3P BCLKN BCLKP BB1N BB1P BB2N BB2P BB3N BB3P
68 67 66 65 64 63 62 61 60 59
BG3N BG3P BCLKN BCLKP BB1N BB1P BB2N BB2P BB3N BB3P
RSDS_CON30
3AVCC 1 3AVC C1 C60 0.1u/6
ADC_VC C
BLUE+ BLUESOGIN GREEN+ GREENRED+ RED-
B+ BSOG G+ GR+ R-
30 31 33 34 35 37 38 29 36 41
C59 22uF /16V
L19 F EB_0805
AG3N/TEAN AG3P/TEAP AC LKN/TEBN ACLKP/TEBP AB1N/TECN AB1P/TECP AB2N/TECLKN AB2P/TECLKP AB3N/TEDN AB3P/TEDP
94 93 92 91 90 89 88 87 86 85
R XEIN0R XEIN0+ R XEIN1R XEIN1+ R XEIN2R XEIN2+ RXEC KINRXEC KIN+ R XEIN3R XEIN3+
PAN EL_3VCC
L16 F EB_0805/NV L18
L17 F EB_0805/NC
F EB_0805/NC
F EB_0805/NC PAN EL_5_12VCC L20 C65 0.1U/6/N C C66 0.1U/6/N C
+
C63 0.1u/6
C61 0.1u/6
C62 0.1u/6
C64
0.1u/6
28 27 32 39 40
AHS AVS
AH S AVS
42 43
50 54 53 52 51 111 56
47 46 125 126
114 115 116 117 118 119 122 123 124
TCON[11]/V[0] TCON[10]/V[1] TCON[9]/V[2] TCON[8]/V[3] TCON[7]/V[4] TCON[6]/V[5] TCON[5]/V[6] TCON[1]/V[7] TCON[0]/VCLK
ADC_GND C43.C44.C45 IC
DDCSDA DDCSCL DDCSDA2 DDCSCL2
BR 1N/TOAN BR1P/TOAP BR 2N/TOBN BR2P/TOBP BR3N/TOCN BR3P/TOCP BG1N /TOCLKN BG1P/TOCLKP BG2N/TODN BG2P/TODP
82 81 80 79 78 77 76 75 74 73
R XOIN0R XOIN0+ R XOIN1R XOIN1+ R XOIN2R XOIN2+ RXOCKINRXOCKIN+ R XOIN3R XOIN3+
RSDS_CON50/NC
CN 5 TP2 1 TEST POINT TC ON9 TC ON10 TC ON11 R 63 R 64 R 65 22/6 22/6 22/6 Y CLK Y DIO Y OE TC ON5 TC ON6 TC ON7 TC ON8 R 59 R 60 R 61 R 62 22/6 22/6 22/6 22/6 F XDIO XSTB POL BXDIO 1 3 5 7 9 11 13 15 17 19 21 23 25 DGND 27 PAN EL_5_12VCC 29 RXOIN 0RXOCKINRXOIN 1DGND RXOIN 2RXOIN 3RXEIN0DGND RXECKINRXEIN1RXEIN2RXEIN31 3 5 7 9 11 13 15 17 19 21 23 25 27 29 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 RXOIN 0+ RXOCKIN+ RXOIN 1+ DGND RXOIN 2+ RXOIN 3+ RXEIN0+ DGND RXECKIN+ RXEIN1+ RXEIN2+ RXEIN3+ DGND PAN EL_5_12VCC PAN EL_5_12VCC
RTD_SCLK RTD _SDO/SDI SD IO1 SD IO2 SD IO3 RTD_SCSB R ESET
R66
100/6
5DVCC
5DVCC
VCC12
DDC _SDA DD C_SC L
R71 R72
NC NC
TCON11 T CON10 TCON9 TCON8 TCON7 TCON6 TCON5
1841 30P
PANEL_5_12VCC L22 F EB_1206 L21 NC
PANEL_3VCC 3DVCC Q10 NC/SI2301DS
2 Q8 SI2301DS PANEL_5_12VC C
3
PANEL_3VCC R76 C 73 N C/0.1U /6 N C/100U/16V C 74 PAN EL_3VCC L30 NC /F EB_1206 PAN EL_5_12VCC
2
3 R75
C71 NC/2200P/6 1
C72 NC/10K/6 NC/2200P/6
R67
C67 C68 1 2200P/6 2200P/6
R68 10K/6
C69 0.1U/6
C70 NC/82K/6 100U/16V R77
If panel is 3.3V LVDS IF, L30 must add the part 2004/4/14
82K/6
R70 3
NC/10K/6
D 3
82K/6 3 Q9 DTC144EUA 2 PANEL_PW12
Q11
NC/DTC144EUA TECHVIEW 2 PANEL_PW3
G
2
1 S
1
C B
2
3
Title
PROJECT : L7C/L5TL-C RTD2023
Size Document Number
1
E
DISPLAY
Date: Monday , September 06, 2004 Sheet 3 of 5
Rev B
L7c service manual-1A-final1006.doc Page44 of 56
GND
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
1
L7C
VCPU
Monitor
Reset circuit
R78 R79 10K/6
3DVCC
C
D32 NC/ 1N4148
R165 NC/100K/6 Q20 2 C103 NC/1U/16V LED_R C86 NC/1U/16V 1 10K/6 LED_G NC/2N3906 3 VCPU
B
Q12 1
E
R82
4.7K/6 Q13 1
2
2N3906 3DVCC
R93
4.7K/6
2 R87 33K/6 R91 33K/6 R88 33K/6 R89 33K/6 R90 33K/6 R84 33K/6 R85 33K/6 2N3906 3
3
3AVCC1 3AVCC1 R147 4.7K/6
less R94 to CN6 pin 11 R101,R103 net swap
CN6 R95 R96 R97 R98 R99 R100 R101 R102 R103 1K/6 1K/6 1K/6 1K/6 1K/6 1K/6 1K/6 220/6 220/6 10 9 8 7 6 5 4 3 2 1 4501-10-10P-R
R106 NC/82K/6 VCPU
MENU SEL PWR DOW N UP RIGHT LEFT
RESET 2 1 C76 0.1U/6 C77 0.1U/6 C78 0.1U/6 C79 0.1U/6 C80 0.1U/6 D33 R166 0/6 3 NC/DAN202U 22uF/16V 0.1u/6 Junction from A change to B C81 0.1U/6 C82 0.1U/6 + C84 C85
2.0mm pitch 90° E&T 4607-11Pin
TO BUTTON BOARD
VCPU R163 VCPU 4.7K/6 I1 12 VCPU C88 1 10pF/6 Y2 11.0592MHz 11 7 C75 0.1U/6 1 2 3 4 U8 A0 A1 A2 VSS 24LC16 VCC WP SCK SI 8 7 6 5 2K/6 2K/6 R142 R83 R92 100/6 100/6 IICSCL IICSDA LED_R LED_G NC 14 13 27 26 16 9 30 31 32 33 2 R80 R81 VCPU 19 6 5 4 8 43 44 R164 3 2 1 42 41 40 34 39 38 17 18 20 21 22 23 24 25 35 36 37 15 28 29 22 MENU SEL PWR UP DOWN RIGHT LEFT 4.7K/6 4.7K/6 AVS R110 R111 R112 R113 R114 R115 NC NC 4.7K/6 4.7K/6 R116 4.7K/6 VCPU
Add Q20,R165,R166,C103,D32,D33 2004/6/16
C87 10pF/6 NC NC VDD3 VCC HSYNC VSYNC
PARAMETER EEPROM
PANEL_PW 12 MUTE Hot_Plug STBY PWR_SEL
P5.0 P5.1 X1 P5.2 P5.3 P5.4 X2 P5.5 P5.6 RESET DA8/HLFHO DA9/HALFV P1.0 P1.1 INT0/P3.2 P1.2 P1.3 P1.4 ISCL/P3.5/T1 P1.5 ISDA/P3.4/T0 P1.6 P6.0/AD0 P1.7 P6.1/AD1 DA7 P4.0 P6.2 P6.3 P4.1 P6.4 P4.2 P6.5 P6.6 P3.1/TXD P6.7 P3.0/RXD VSS 10
47K/6 4.7K/6
R39 R40
VRMT
R120
NC
PANEL_PW3 SDIO1 SDIO2 SDIO3 RTD_SDO/SDI RTD_SCLK RTD_SCSB
VCPU R124 R125 100/6 100/6 R109 R108 4.7K/6 4.7K/6 TxD RxD DDC_SDA DDC_SCL 5DVCC
JP1 1 2 3 4 HEADER 4
MTV312M64 VCC12 R41 6.8K/6
TECHVIEW R38 2K/6 Title
PROJECT : L7C/L5TL-C MCU
Size Date: Document Num ber
DISPLAY
Monday , Septem ber 06, 2004 Sheet 4 of 5
Rev B
QUANTA L17VC(RSDS)
L7c service manual-1A-final1006.doc Page45 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
VCC12 R128 1K/6/NC
Monitor
3
R129
10K/6/NC R130 C89 1U/8/NC
10K/6/NC R131 3.9K/6/NC
VOL
3
C
AGND
1
Q15
VOLUME
2
SN7002E/NC
B 2
1
E
VCC12 L24 BEAD/1206/NC C90 0.1U/6/NC 15 16 U9 AGND 17 5 R134 CX201209805/8/NC C93 SPKOUTL 330U/16V/NC JP2 1 2 CX201209805/8/NC 3 4 4606-04-04P-R/NC 11 R139 AGND 3 10K/6/NC 12 10 Q16 DTC144EUA/NC 1 C98 0.1U/8/NC C99 330U/16V STBY MUTE SVR VAROUR_R OUTR GND GND GND GND GND GND GND 7 14 C97 SPKOUTR 330U/16V/NC C91 330U/16V
PC AUDIO-IN
VS 100/6/NC 100/6/NC LIN_PC RIN_PC VCC12 C95 220P/6/NC C96 220P/6/NC R135 20K/6/NC 6 C92 C94 0.47U/8/NC 0.47U/8/NC 4 9 INL OUTL 1 2 Z0416 R133 L26 600/CX601T02001/NC INR VAROUT_L VS
J3
Z0412 1 5 L_LINE 4 3 2 R_LINE ZD005D100/NC
L25 600/CX601T02001/NC 1 2 Z0415 R132
R136 20K/6/NC
VOLUME R138 10K/6/NC
VOL
R137
SPEAKER OUT
AGND MUTE MUTE 2
TDA7496L/NC
1 2 3 13 18 19 20
AGND L23 BEAD/1206/NC
VCC12 AGND R140 10K/6/NC R141 3 AGND 10K/6/NC AGND
STBY
STBY
2
Q17 DTC143EUA/NC 1 AGND
TECHVIEW
PROJECT : L7C/L5TL-C
Title
AUDIO(OPTION)
Size Date: Document Number
DISPLAY
Monday , September 06, 2004 Sheet 5 of 5
Rev B
L7c service manual-1A-final1006.doc Page46 of 56
RTD2011_QA
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C 11. EXPLODED VIEW
Monitor
L7c service manual-1A-final1006.doc Page47 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
12. TROUBLE SHOOTING HINTS
L7c service manual-1A-final1006.doc Page48 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
L7c service manual-1A-final1006.doc Page49 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
L7c service manual-1A-final1006.doc Page50 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
(optional)
L7c service manual-1A-final1006.doc Page51 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
13. REPLACEMENT PARTS LIST
KEY SWITCH BOARD PART LIST Level Part Number 1 22L7WBB0011 2 DA0L7WTB1A9 2 BEYG0013DA3 2 DFHD10MR316 2 DHP00TSAQ01 Part Description L7W BUTTON/B ASSY(NEW) PCB(BUTTON) L7W TB(1L,165*18,REVA) LED(DIP) YELLOW/GREEN(L-3WYGW) CONN DIP HEADER 10P 1R MR(P2.0,H4.1) SWITCH PUSH BUTTON(TSAQ-2 ,50MA,12V) Qty UOM Location 1 KT 1 PC 1 PC 1 PC 7 PC LED1 CN1 SW1,SW2,SW3,SW4,SW5,SW6,SW7
Level Part Number 1 29L9IMB0047 2 39L9IDP0030 3 41L9ISS0037 4 DA0L9IMB2B1
Part Description L9I M/B ASSY(SHARP,RT2023)FOR L7C L9I M/B DIP ASSY(SHARP,RT2023)FOR L7C L9I M/B S/S ASSY(SHARP,RT2023)FOR L7C PCB(M/B) L9I MB(2L,12.5*12 REVB)
Qty UOM Location 1 KT 1 KT 1 KT 1 PC
L7c service manual-1A-final1006.doc Page52 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C 4 AJD2023CF01 4 AKE3A8S0Y01 4 AJ00312VP18 4 AL001117078 4 AL001563001 4 BA039060Z01 4 BAN70020Z13 4 BAM23010Z05 4 BA001440Z87 4 BA144EUAZ04 4 BAM9410YZ02 4 BC1SS355Z05 4 BCRB081LZ02 4 BCLS4148AZ9 4 BDGZ5226Z03 IC(128P) RTD2023(140MHZ,QFP) IC,EEPROM(8P) 24LC16B/SN(2K*8,100KHZ) IC(44P) MTV312MV64AJ(12MHZ,PLCC) IC(3P) AIC1117CY(SOT-223) IC(8P) AIC1563CS(SOP8) TRANSISTOR,SMD MMBT3906(40V,200MA) TRANSISTOR MOSFET 2N7002E(60V,250MA) TRANSISTOR MOSFET SI2301DS(-12V,-2.3A) TRANSISTOR SMD PDTC144EU (50V,30MA) TRANSISTOR SMD DTC144EUA(50V,30MA) TRANSISTOR MOSFET SI9410DY(30V,7A) DIODE SMD 1SS355(80V,100MA) DIODE SMD RB081L-20(20V,5.0A,VF:0.45V) DIODE,SMD RLS4148 DIODE ZENER SMD 1 PC 1 PC 1 PC 2 PC 1 PC 6 PC 1 PC 1 PC 1 PC 1 PC 1 PC 2 PC 1 PC 2 PC 2 PC U7 U8 I1 U1,U3 U2 Q2,Q3,Q12,Q13,Q18,Q19 Q4 Q8 Q9 Q9 Q1 D1,D2 D3 D30,D31 D34,D35
Monitor
L7c service manual-1A-final1006.doc Page53 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C MMGZ5226B(3.3V) 4 CH41004Z931 CAP CHIP 0.1U,25V(+80-20%,Y5V,0603) 44 PC
Monitor
C1,C3,C4,C5,C7,C8,C11,C12,C35,C36,C37,C38,C39,C40,C41,C42,C43,C44,C45,C47,C49,C51,C
L7c service manual-1A-final1006.doc Page54 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
4 CH51004MA32 4 CH51001K991 4 CH02206J909 4 CH11206J908 4 CH22206K917 4 CH34703K916 4 CH01006J909 4 CS00003J900 4 CS02203J902 4 CS07503F905 4 CS11003J904
CAPACITOR CHIP 1UF 25V(+-20%,Y5V,0805) CAP CHIP 1U 6.3V(+-10%,X5R,0603) CAPACITOR CHIP 22P 50V(+-5%,NPO,0603) CAPACITOR CHIP 120P 50V(+-5%,NPO,0603) CAP CHIP 2200P 50V(+-10%,X7R,0603) CAP CHIP 0.047UF 16V(+-10%,X7R,0603) CAPACITOR CHIP 10P 50V(+-5%,NPO,0603) RESISTOR CHIP 0 1/10W+-5%(0603) RES CHIP 22 1/10W +-5%(0603) RESISTOR CHIP 75 1/10W +-1%(1608) RESISTOR CHIP 100 1/10W +-5%(0603)
1 PC 2 PC 4 PC 1 PC 3 PC 7 PC 2 PC 6 PC 1 PC 3 PC 14 PC
C13 C2,C102 C26,C28,C33,C48 C9 C10,C67,C68 C16,C18,C19,C21,C22,C23,C25 C87,C88 L8,L9,L10,L31,R8,R166 R164 R24,R27,R32 R23,R25,R26,R28,R29,R31,R33,R34,R36,R66,R83,R92,R 124,R125
L7c service manual-1A-final1006.doc Page55 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
4 CS21003F904 RESISTOR CHIP 1K,1/10W,+-1%(0603) 4 CS21003J906 4 CS24703J900 4 CS31003J908 4 CS33303J904 4 CS38203J904 4 CX0P121R000 4 CS00006J205 4 CS04703J906 RES CHIP 1K 1/10W +-5%(0603) RES CHIP 4.7K 1/10W +-5%(0603) RES CHIP 10K 1/10W +-5%(0603) RESISTOR CHIP 33K 1/10W +-5%(0603) RES CHIP 82K 1/10W +-5%(0603) EMI FILTER CHIP HI1206P121R-00(120 6A) RESISTOR CHIP 0 1/4W+-5%(3216) RES CHIP 47 1/10W +-5%(0603)
1 PC 11 PC 18 PC 6 PC 7 PC 2 PC 1 PC 2 PC 1 PC 3 PC 2 PC 1 PC 1 PC
R12 R9,R13,R16,R56,R95,R96,R97,R98,R99,R100,R101 R18,R39,R40,R54,R58,R82,R93,R108,R109,R110,R111,R114,R115,R1 16,R143,R144,R147,R163 L3,R10,R14,R68,R78,R79 R84,R85,R87,R88,R89,R90,R91 R67,R70 L22 FUSE1,R2 R4 R3,R15,R17 R102,R103 R6 R11
4 CS12003F905 RESISTOR CHIP 200 1/10W+-1%(0603) 4 CS12203J904 RES CHIP 220 1/10W +-5%(0603)
4 CS13303F909 RESISTOR CHIP 330 1/10W +-1%(0603) 4 CS23003F900 RES CHIP 3K 1/10W +-1%(0603)
L7c service manual-1A-final1006.doc Page56 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C 4 CS42403F905 RESISTOR CHIP 240K 1/10W,+-1%(0603) 4 CS43303J906 4 CX0E601R009 4 CX201209805 4 CS22003J909 4 CS26803J909 RES CHIP 330K 1/10W +-5%(0603) EMI FILTER CHIP HZ0805E601R(600,500MA) EMI FILTER CHIP FBM-11-201209-121A40 RES CHIP 2K 1/10W +-5%(0603) RESISTOR CHIP 6.8K 1/10W +-5%(1608) 1 PC 1 PC 5 PC 1 PC 5 PC 1 PC 1 PC 1 PC 1 PC R7 R5 L12,L13,L14,L15,L19 L28 R35,R37,R38,R80,R81 R41 R30 Y1 Y2
Monitor
4 CS51003F900 RESISTOR CHIP 1M 1/10W+-1%(0603) 3 BG624576031 3 BG611059319 CRYSTAL DIP 24.576MHZ(30PPM,20PF,49/US) CRYSTAL DIP 11.0592MHZ(+-30PPM,49/US)
L7c service manual-1A-final1006.doc Page57 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
3 CC61005MD02 3 CC62204MD23 3 CC71004MD68 3 CC73303MD51 3 DC04725K002 3 DFHD06MR247 3 DFDS15FR050 3 DFHD30MR259 3 DFHD10MR316
CAP ELEC 10U 35V(+-20%,105C,5*11,2000HR) CAP ELEC 22U 25V(+-20%,105C,5*11,2000HR) CAP ELEC 100U 25V +-20%,105C,6*11,LESR CAP ELEC 330U 16V(+-20%,105C,8*11,2000HR CHOKE COIL 47UH(2.5A,+-10%,T07473) CONN DIP HEADER 6P 2R MR(P2.5,H6.0) CONN D-SUB 15P 3R FR,P1.15,H12.55,NO SRW CONN DIP HEADER 30P 2R MR(P2.0,H4.0) CONN DIP HEADER 10P 1R MR(P2.0,H4.1)
8 PC 3 PC 1 PC 2 PC 1 PC 1 PC 1 PC 1 PC 1 PC
C34,C46,C50,EC1,EC2,EC3,EC5,EC6 C53,C59,C84 C70 C6,EC4 L2 CN1 CN2 CN5 CN6
L7c service manual-1A-final1006.doc Page58 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
14. Some parameters will be update after repair The white balance and DDC or BIOS maybe update after repair, the operation method is below:
1) White balance adjust:
Factory D8000 AUTO white balance adjust flow:
L7c service manual-1A-final1006.doc Page59 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
L7c service manual-1A-final1006.doc Page60 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Factory D8000 software interface as following:
Monitor
Manual white balance adjust flow:
l Instruments: n n l n n Color analyzer CA210 Pattern generator or PC CA210 SDK Chkdisk for IBM PC and DMW
Software
L7c service manual-1A-final1006.doc Page61 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Adjustment process (maximum brightness and contrast at "Default") Step1: press power key+SELECT/AUTO key at the same time and go into factory mode Step2: "Auto color" With standard pattern generator in "32 gray" picture
Monitor
Step3: change pattern to white picture and measure center area for color temperature
step4: Adjust output gain to achieve the color temperature and smooth the gray level
L7c service manual-1A-final1006.doc Page62 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Step5:When adjust finish, It should use white pattern to confirm final color temperature.
Note: When finish adjust gain. Don't forget do color update avoid to lost gain value.
DDC & ISP operation:
This monitor can be programmed BIOS and DDC file though this tooling, you can use the software (Myson-Century ISP) on PC to control
L7c service manual-1A-final1006.doc Page63 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
the ISP board (Fig.1) and use the software LM5ISP to program DDC and use software QEDID to read DDC
Monitor
Fig.1
Write and Read DDC (EDID)
Write DDC: Step1: Connect the VGA cable with the Parallel Port using the tool signed DDC. use DDC programm board. One port connect to PC print port, the other connect to Monitor signal port.
Step2: Press the power key, and enter the user mode(green led)
L7c service manual-1A-final1006.doc Page64 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Step3: Open the LM5ISP tool on windows98, Select the file ->load, then loading the DDC file
Monitor
Step4: check
whether loading DDC file success.
L7c service manual-1A-final1006.doc Page65 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Indicate success
Step5: Press Default button or input the monitor serial number.
L7c service manual-1A-final1006.doc Page66 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Read DDC: Step1: Connect the VGA cable with the Parallel Port using the tool signed DDC. use DDC program board. One port connect to PC print port, the other connect to Monitor signal port.
Step2: Press the power key, and enter the user mode(green led) Step3:
L7c service manual-1A-final1006.doc Page67 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C Double press the QEDID tool on windows98
Monitor
Step4: read DDC from device
L7c service manual-1A-final1006.doc Page68 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Single press button
step5: check whether read DDC success
L7c service manual-1A-final1006.doc Page69 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Indicate success
step6: see detailed DDC information
L7c service manual-1A-final1006.doc Page70 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Single press button
Update BIOS (ISP): Step1: Connect the VGA cable with the Parallel Port using the tool signed ISP(Fig.2)
L7c service manual-1A-final1006.doc Page71 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Fig.2 Step2: Press the monitor power key, and enter the user mode (green led) Step3: Open the myson-century ISP tool on windows98
L7c service manual-1A-final1006.doc Page72 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
step4: Select the MTV type item in MTV32M64. Load current BIOS file into LOAD MCU FILE
L7c service manual-1A-final1006.doc Page73 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Note: ISP and DDC software should be run under Windows 98 system Step5: Press Create Security File button. Set Isp slave address is 7C. Slave B address is 4C Command 1 address is 77
L7c service manual-1A-final1006.doc Page74 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Step6: Check all information is ok, then Press Run button.
L7c service manual-1A-final1006.doc Page75 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
Step 7: When update BIOS finish. Please enter factory mode to execute factory reset to make sure monitor would be working properly.
3 DDC board and ISP board schematic
L7c service manual-1A-final1006.doc Page76 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com
L7C
Monitor
DDC board schematic
ISP board schematic
L7c service manual-1A-final1006.doc Page77 of 56
-Techview Confidential PDF created with pdfFactory Pro trial version www.pdffactory.com