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Service KEH-P490/X1M/UC
Manual ORDER NO.
CRT2398
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P490
KEH-P4900 X1M/UC
X1M/UC
KEH-P4950 X1M/ES
- This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-1011 CRT2406 3L Cassette Mech. Module:Mech.Description and Greasing, Disassembly, Adjustment
- This service manual does not describe the CD test mode.
For the operations in the CD test mode, refer to the CD player's Service manual.
CONTENTS
1. SAFETY INFORMATION ............................................2 7. GENERAL INFORMATION .......................................42
2. EXPLODED VIEWS AND PARTS LIST .......................2 7.1 DISASSEMBLY ...................................................42
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....9 7.2 PARTS .................................................................43
4. PCB CONNECTION DIAGRAM ................................24 7.2.1 IC.................................................................43
5. ELECTRICAL PARTS LIST ........................................33 7.2.2 DISPLAY .....................................................47
6. ADJUSTMENT..........................................................40 8. OPERATIONS AND SPECIFICATIONS.....................48
PIONEER CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 1999 K-ZZB. OCT. 1999 Printed in Japan
KEH-P490,P4900,P4950
1. SAFETY INFORMATION
CAUTION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair
complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so
and refer the repair to a qualified service technician.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1
6 3
7
4 16
5
9 12
2
10 20
8
19
15 18
17
14
11
13
2
KEH-P490,P4900,P4950
NOTE:
- Parts marked by "*" are generally unavailable because they are not in our Master Spare Parts List.
- Screws adjacent to mark on the product are used for disassembly.
- PACKING SECTION PARTS LIST
Part No.
Mark No. Description KEH-P490/X1M/UC KEH-P4900/X1M/UC KEH-P4950/X1M/ES
* 1 Accessory Assy CEA2350 CEA2350 CEA2350
2 Spring CBH1650 CBH1650 CBH1650
3 Screw Assy CEA2351 CEA2351 CEA2351
4 Screw CBA1304 CBA1304 CBA1304
* 5 Polyethylene Bag CEG-127 CEG-127 CEG-127
6 Screw CRZ50P090FMC CRZ50P090FMC CRZ50P090FMC
7 Screw TRZ50P080FMC TRZ50P080FMC TRZ50P080FMC
* 8 Polyethylene Bag CEG-158 CEG-158 CEG-158
9 Handle CNC5395 CNC5395 CNC5395
10 Bush CNV3930 CNV3930 CNV3930
11 Polyethylene Bag CEG1173 CEG1173 CEG-162
12 Carton CHG3893 CHG3889 CHG3890
13 Contain Box CHL3893 CHL3889 CHL3890
14 Protector CHP2244 CHP2244 CHP2244
15 Protector CHP2243 CHP2243 CHP2243
16-1 Owner's Manual CRD3090 CRD3088 CRD3083
16-2 Owner's Manual Not used Not used CRD3084
16-3 Installation Manual CRD3091 CRD3089 CRD3085
* 16-4 Warranty Card CRY1070 CRY1070 Not used
* 16-5 Card Not used ARY1048 Not used
17 Cord assy CDE6222 CDE6222 CDE6222
18 Case assy CXB3520 CXB3520 CXB3520
19 Battery CEX1030 Not used Not used
20 Remote Control Unit CXB4284 Not used Not used
- Owner's Manual, Installation Manual
Model Part No. Language
KEH-P490/X1M/UC CRD3090 English, French
CRD3091 English, French
KEH-P4900/X1M/UC CRD3088 English, French, Spanish
CRD3089 English, French, Spanish
KEH-P4950/X1M/ES CRD3083 English, Spanish, Portuguese(B)
CRD3084 Chinese, Arabic
CRD3085 English, Spanish, Portuguese(B), Chinese, Arabic
3
KEH-P490,P4900,P4950
2.2 EXTERIOR
2
29
7
1
4 1
32
1
1
68
33 A
5
12
15 28 19
38 40 24
41
27 14 13
35 26
6
31 14
45 44 18
42
69
46
36 25 20
39
46 23
9
43
46
22 A
37 8
46 21
34 48
11 59
48
17
60
16
55 62 48
61 65
63 64
51
52 66
47 10
56
3
2
67 50 3 2
53
58 2
57
49
54
30
4
KEH-P490,P4900,P4950
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ26P050FMC 36 Spring CBH1835
2 Screw BSZ30P050FMC 37 Spring CBH2182
3 Screw BSZ30P200FMC 38 Bracket CNC6135
4 Cord Assy CDE6222 39 Bracket CNC6791
5 Fuse(10A) CEK1136 40 Arm CNV4692
6 Transistor(Q904) 2SD2396 41 Arm CNV4693
7 Case CNB2350 42 Arm CNV4728
8 Holder CNC5704 43 Panel Unit CXB4927
9 Cushion CNM5210 44 Door CAT2109
10 Insulator CNM5963 45 Spring CBH1838
11 Panel CNS5132 46 Screw IMS20P030FZK
12 Tuner Amp Unit See Contrast table(2) 47 Detach Grille Assy See Contrast table(2)
13 Screw BPZ26P080FMC 48 Screw BPZ20P100FZK
14 Screw BSZ26P080FMC 49 Button(DETACH) CAC5789
15 Screw BSZ26P160FMC 50 Button(1-6) CAC6239
16 FM/AM Tuner Unit See Contrast table(2) 51 Button(SOURCE) CAC6241
17 Holder CNC6554 52 Button(+) CAC6242
18 Pin Jack(CN301) CKB1035 53 Button(-) CAC6243
19 Plug(CN603) CKM1270 54 Button(AUDIO) CAC6245
20 Connector(CN701) CKS3408 55 Button(EQ) CAC6247
21 Connector(CN602) CKS3568 56 Button(EJECT) CAC6268
22 Connector(CN601) CKS3581 57 Button(BAND) CAC6269
23 Antenna Jack(CN402) CKX1056 58 Spring CBH2103
24 Panel CNB2343 59 Cover CNS5635
25 Holder CNC5399 60 Keyboard Unit See Contrast table(2)
26 Holder CNC6845 61 LCD(LCD1901) CAW1563
27 Holder CNC7996 62 Connector(CN1901) CKS3580
28 Heat Sink CNR1505 63 Holder CNC8485
29 Holder Unit CXB2687 64 Sheet CNM6453
30 Chassis Unit CXB3012 65 Connector CNV5914
31 IC(IC302) TDA7384 66 Lighting Conductor CNV5915
32 Remote Control Unit See Contrast table(2) 67 Grille Sub Assy See Contrast table(2)
33 Cover See Contrast table(2) 68 Cassette Mechanism Module EXK4000
34 Button CAC4836 69 Screw ISS26P055FUC
35 Spring CBH1834
(2) CONTRAST TABLE
KEH-P490/X1M/UC, KEH-P4900/X1M/UC and KEH-P4950/X1M/ES are constructed same except for the
following:
Part No.
Mark No. Description KEH-P490/X1M/UC KEH-P4900/X1M/UC KEH-P4950/X1M/ES
12 Tuner Amp Unit CWM7021 CWM7021 CWM7025
16 FM/AM Tuner Unit CWE1467 CWE1467 CWE1486
32 Remote Control Unit CXB4284 Not used Not used
33 Cover CNS4948 Not used Not used
47 Detach Grille Assy CXB5152 CXB4788 CXB4789
60 Keyboard Unit CWM7022 CWM7024 CWM7024
67 Grille Sub Assy CXB5209 CXB5210 CXB5211
5
KEH-P490,P4900,P4950
2.3 CASSETTE MECHANISM MODULE
6
KEH-P490,P4900,P4950
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ20P040FMC 46 Pinch Roller ENV1518
2 Washer CBF1037 47 Pinch Holder Unit EXA1583
3 Washer CBG1003 48 Pinch Roller ENV1518
4 Screw EBA1028 49 Reel Unit EXA1585
5 Screw EBA1037 50 Head Base Unit EXA1586
6 Spring EBH1531 51 Lever Unit EXA1587
7 Spring EBH1624 52 Gear Unit EXA1588
8 Spring EBH1625 53 Motor Unit(Service) EXX1055
9 Spring EBH1626 54 Washer HBF-179
10 Spring EBH1627
11 Spring EBH1628
12 Cord EDD1024
13 Photo-reflector(EGN1) EGN1004
14 Arm ENC1526
15 Lever ENC1530
16 Lever ENC1531
17 Arm ENC1532
18 Frame ENC1533
19 Holder ENC1534
20 Gear ENC1535
21 Arm ENC1536
22 Roller ENR1040
23 Belt ENT1027
24 Collar ENV1508
25 Arm ENV1539
26 Arm ENV1540
27 Gear ENV1544
28 Gear ENV1547
29 Gear ENV1548
30 Worm Wheel ENV1550
31 Lever ENV1551
32 Flywheel ENV1554
33 Gathering PCB ENX1054
34 Switch(S1,S2) ESG1007
35 Deck Unit EWM1023
36 Plug(CN251) CKS3540
37 Gathering PCB ENX1053
38 Motor Unit(M1) EXA1491
39 Motor EXM1028
40 Head Assy(HD1) EXA1506
41 Motor Unit(M2) EXA1580
42 Screw BMZ20P022FMC
43 Bracket ENC1528
44 Chassis Unit EXA1582
45 Pinch Holder Unit EXA1584
7
KEH-P490,P4900,P4950
8
1 2 3 4
KEH-P490,P4900,P4950
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A TUNER AMP UNIT
B FM/AM TUNER UNIT
Q3 T31 Q31 CF51 CF52 CF53 A
CN402 FM RF FM MIX FM IF FM IF FM IF T51
FM/AM 25
ANTENNA TUNER Lch
26
41 9 10 2 Q903
14 15 17 19 47 1
FM 34 19 B.U VDD
FM/AM PROCESSOR FM PROCESSOR
OSC 7
IC1 PA4023B IC2 PA4024A
Q201 Q202 6 38 32 36 16 18 23 25 31 30 28 40 43 Q921
AM RF/AGC CF232 AM IF FMSL
9
AMIFC
AMSL 18 Q920
FMTV
FMSD
AM
VCO
AMTV AMVCC FMVCC
OSC SYSPW
VCC 55 74 68
SYSPW
VDD
AVDD
SL
19 20 15 17 14 13 21 6
76
FMTV SD SL
AMIF 53
AMTV SD
SYSTEM
PLL 9
CONTROLLER
Q907 Q909 IC601(1/2)
29 AMTV
FMVCO
4 PE5086A
25 5
FMTV IC501 AMVCO
PLLDATA
AM FM
VCC 29
PM2006A FM
30
Q908 Q910 AM
37 38
PDI/PCK/PDO/PCE
X501
ELECTRONIC VOLUME TUN-L B
CN701 TUN-L 2 Q309
7 BUSL+ BUS-L1 5 MUTE CN301
11 BUSL- BUS-L2 6
IC301 RL
11 2
PML003AM
IP-BUS 5 BUS- TAPE-L 3 FL 10 MUTE 1
1 BUS+ IP-BUS DRIVER
5 1 TX Q310
6
IC702 2 RX
8 Q701
CA0008AM
B.U
VCK/VDT/VST
8 ASENBO POWER AMP CN603
ASENBO FL+ 9
6 6 FRONT-L
11 FL- 7 5 SPEAKER
IC302 5
Q702 FL
15 TDA7384
RL RL- 19
Q307 9 9 REAR-L
MUTE RL+ 17 8 8 SPEAKER
MUTE STBY
22 4
Q904 Q911 Q306
VCC B.U 7 7 BACK UP
SYSPW
Q901 FUSE
10A
BSENS
Q905
8V B.U
Q902
VDD REGULATOR ASENS ACC
2 2
SYSPW ACC
RESET
D DECK UNIT 1
IC602
2 S-80734AN Q906
CN252
CN251 B REMOTE
1 4 VCC
4 5 IC901 1
FWD EQ AMP 5 TAPE+B B.U 1 1 B.REMOTE
54 60 66 65
L-ch 37 TPD1018F
ASENS
MUTE
BSENS
IC251 LOUT
RESET
36 7 56 6
5 TX SYSPW
REV 39 CXA2559Q Lch
3 3 61
RX
C
L-ch 1
4 ASEMBO 70
18 17 X1
X601
CN254 MUTE
9
MCMUTE 37 SYSTEM
9 MCMUTE 69
M2 X2
SUB M 2 MECHANISM CONTROLLER
B.U
MOTOR 1 DRIVER 20 20 B.U
18 19 IC601(2/2)
5 17 STBY STBY 48
19 19 STBY PE5086A
2 IC351
1 PA2020A
M1 MTL MTL 38
CN255 8 8 MTL
SWVDD
MAIN M LOAD 42
DSENS
8 7 10 LDSW
LOADSW
DPDT
KYDT
MOTOR 11 11
CN253
3 1 5 6 CN602
63 8 9 5
3 1 5 6 VDD
CN256
EGN1
REEL SWVDD Q601
SENSE VDD SWITCH
S2 S1 SW5V
MODE LOAD
DSENS
SW5V
DPDT
KYDT
ILL1
E REEL SENSE PCB CN601
8 5 3 4 6
8 5 3 4 6
CN1901 REMOTE CONTROL
SENSOR
3
IC1902
56 10 1 RS-140
D
LCDB
VDD
18
DPDT
20 17
KYDT REM
KEY MATRIX LCD DRIVER
IC1901
PD6278C
XO
XI
LCD
22 23
X1901
C KEYBOARD UNIT 9