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fp-504
SERVICE MANUAL

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fp-504
PART LIST
NO 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 CODE B-FLUX------1 B-IPA-------1 B-SLDR-BAR--1 B-SLDR-WIRE-1 B-TUB-EMP1--1 H-CER-100CHT1 H-CER-100CHT1 H-CER-104T--1 H-CER-10CHT-1 H-CER-10CHT-1 H-CER-10CHT-1 H-CER-56CHT-1 H-CER-56CHT-1 H-CER-680T--1 H-CER-680T--1 H-COPER-2--3 H-COPER-2--4 H-COPER-2--5 H-DIO-25C---2 H-DIO-25N---2 H-DIO-4002--1 H-DIO-4148--1 H-DIO-4148--1 H-DIO-5402--1 H-DIZ-1W15V-1 NAME FLUX NT2016 IPA 2070 SOLDER BAR 60% SOLDER WIRE 60% TUBE EMPIRE CER CAP 100PF CH CER CAP 100PF CH CER CAP 104PF CER CAP 10PF CH CER CAP 10PF CH CER CAP 10PF CH CER CAP 56PF CH CER CAP 56PF CH CER CAP 680PF CER CAP 680PF COPER 2P NI COPER 2P NI COPER 2P NI DIODE YG225C2 DIODE YG225N2 DIODE IN4002 DIODE IN4148M DIODE IN4148M DIODE IN5402 DIODE ZENER TZP15B 1W 15V 1N4744 @50000 15kg:@28,000 g kg:$4.7 kg:$4.2 g:$0.0047 g:$0.0042 STAN Q'TY 1.000 1.000 1.000 1.000 2.000 TH1, Q107, Q207, Q307, Q407 8.000 C144, C145, C244, C245, C344, 0.000 C345, C444, C445 1.000 C1 9.000 C102, C149, C202, C249, C302, 0.000 C349, C402, C449, C205, 1.000 C405 1.000 C105 1.000 C305 2.000 C103, C203 2.000 C303, C403 3.000 CO5, CO6, CO7 1.000 CO3 2.000 CO4, CO8 1.000 D8 1.000 D7 1.000 D6 10.000 D1, D2, D50, D51, D101 0.000 D201, D301, D401, D501, D502 1.000 D3 2.000 DZ2, DZ3 REMARK

1mm/0.05ø¯ @20 TP TYPE TP TYPE TP TYPE TP TYPE TP TYPE TP TYPE TP TYPE TP TYPE TP TYPE TP TYPE 30mm 45mm 60mm

fp-504
PART LIST

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PART LIST

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PART LIST

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PART LIST

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PART LIST

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PART LIST

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PART LIST

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fp-504 BLOCK DIAGRAM

1

2

3

4

5

6

7

8

R113 47K 1 R112 11K 1 2 3 2 2 R117 100K 1 VR2A 50K C106 184M 1 2 C101 4.7u R103 10K 2 1 +15V 8 R106 22K 1 3 2 1 2 2 2 U1A BA4558N 1 RCA1A LINE OUT 5 1 1 C102 10P 2 2 C103 680P 1 2 VR1A 20K 3 1 C104 4.7U 2 1 1 2 1 1 1 1 R107 560 R108 10K 2 2 R110 1.1K 2 2 R111 9.1K C105 56P VR2B 50K 4 R114 22K 62 + 2 1 2 2 3 U5A BA4558N 5 2 2 4 R120 10K 62 1 1 R116 8.2K 5 1 2 C107 184M 1 2 3 1 R115 4.3K 1 C108 473M 1 2 C109 473M 1 2 2 3 VR3A 100K 3 1 2 4 1 2 1
A

2

+15V RCA1B 1 CH INPUT 2 1 2 1 + R101 6.8K 2 U2A NJM4560L 8
A

+15V 8

+15V 8 1 U6A NJM4560L 3 8 SW1A C112 224M 1 2 +15V C141 4.7U 1 1 1 2 + 1CH OUT

3

U3A NJM4560L

1

R102 1K

R121 100K

C113 153M 1 2 2

C114 153M 1 2

R126 4.7K 2 2

1

5

VR3B 100K

1 C110 104M 1 2 3

2

1 VR5A 500K +15V R118 1
B

1 C115 683M 1 R125 150K 2

2

R104 10K

R122 22K

R124 100K

2 1 1 R123 150K 2

R105 7.5K R119 12K 4 1 2 5 1

2 12K

3

1 VR4A 50K

6

2

3 1 2 1
B

+15V U11B BA4558N 5 2 7 6 10K 2 4

1

R302 1K

R303 1 A

VR4B 50K C111 563M

U4A 2 BA4558N

1 1 C302 10P 2

2

R304 10K 1 2 R305 7.5K 1 C205 10P B R211 91K 1 1 2 2 C206 184M 7 5 4 U2B NJM4560L R214 22K 12 2 1 2 C207 184M 1 2 1 R212 11K 2 9

R213 47K 2 R217 100K 7 VR2C 50K R215 4.3K 1 C208 473M 1 2 C209 473M 1 2 1 2 9 VR3C 100K 5 7 6 6 7 U5B NJM4560L 11 2 10 2 R220 10K 12 2 1 1 R216 8.2K 6 8 1 8 2 8

-15V 4

7 -15V -15V 4 5 4 SW1B C212 224M 1 2 U6B NJM4560L 5 C241 4.7U 7 1 1 2 + 2CH OUT
C

RCA1C 2 CH INPUT 6 3 1 2 1 +

R201 6.8K 1 2 VR1B 20K C204 4.7U 5 4 1 2 + 2 R208 10K

6

5 7 6 1

C201 4.7u

6

C

-15V

U3B NJM4560L 11 10

8

C203 680P

R221 100K

C213 153M 1 2 2

C214 153M 1 2

R226 4.7K 2 2

1

R206 22K 2 2 2

R207 560

VR2D 50K

VR3D 100K

1

1

R222 22K 1 6 2 1 C210 104M 1 2 -15V 1 R218 2 12K 9 7 VR4C 50K 12 R219 12K 10 1 11 8 2 5 7 VR4D 50K C211 563M 6 1 4 VR5B 500K 4 5 1 R223 150K 2 2 1

R224 100K

C215 683M 1 R225 150K

U4B NJM4560L 2
D

D

fp-504
fp-504 FRONT
1 2 3 4 5 6 7 8

CUSTOM

1

2

3

4

5

6

7

8

R313 47K 1 R312 11K 1 A +15V 8 RCA1B 3 CH INPUT 5 2 1 2 1 + R301 6.8K 2 2 C301 4.7u R203 10K 1 -15V 4 2 R306 22K 1 2 5 2 7 6 U1B BA4558N 1 1 1 5 C202 10P 2 2 1 2 R204 10K C310 104M 1 2 +15V R205 7.5K 1 R318 2 12K -15V U11B BA4558N 5 2 7 6 4 R319 12K 4 1 2 5 8 3 C303 680P B VR11A 20K 3 1 C304 4.7U 2 1 1 2 1 1 1 1 R307 560 2 R308 10K 2 2 R310 1.1K 2 2 R311 9.1K C305 56P R314 22K 62 + 2 1 2 2 3 U15A BA4558N 5 2 2 4 R320 10K 62 1 1 R316 8.2K U12A NJM4560L 3 C306 184M 1 1 2 C307 184M 1 2 3 1 2 3 2 2 R317 100K 1 VR12A 50K R315 4.3K 1 C308 473M 1 2 C309 473M 1 2 2 3 VR13A 100K 3 1 2 4 1 2 2

A

+15V 8

1 +15V 8 1 U16A NJM4560L 3 8 SW2A C312 224M 1 2 +15V C341 4.7U 1 1 1 2 + 3CH OUT

A

U13A NJM4560L

R321 100K

C313 153M 1 2 2

C314 153M 1 2

R326 4.7K 2 2

1

1

R202 1K

VR12B 50K 4

2

1

5

VR13B 100K

R322 22K 2 1 VR15A 500K 1 2 1 R323 150K 2 2 1

R324 100K

C315 683M 1 R325 150K
B

RCA1A LINE OUT
B

1

3

1 VR14A 50K

6

2

3 1 2 1

VR14B 50K C311 563M

U14A 2 BA4558N

1

R402 1K

1 1 C402 10P 2

2

R404 10K 1 C405 10P 1 2 R411 91K 1 2 C406 184M 7 5 4 U12B NJM4560L R414 22K 12 2 1 2 C407 184M 1 2 R412 11K 1 2 9 2 1

R413 47K 2 R417 100K 7 VR12C 50K R415 4.3K 1 C408 473M 1 2 C409 473M 1 2 1 2 9 VR13C 100K 5 7 6 6 7 U15B BA4558N 11 2 10 2 R420 10K 12 2 1 1 R416 8.2K 6 8 1 8 7 -15V 4 -15V 4 5 4 SW2B C412 224M 1 2 U16B NJM4560L 5 C441 4.7U 7 1 1 2 + 4CH OUT
C

8

R405 7.5K 1 2

R403 10K

2

-15V

RCA1C 4 CH INPUT 6
C

R401 6.8K 1 3 1 2 1 2 VR11B 20K C404 4.7U 5 4 1 2 + 2 R408 10K +

6

5 7 6 1

C401 4.7u

6

-15V

U13B NJM4560L 11 10

C403 680P

R421 100K

C413 153M 1 2 2

C414 153M 1 2

R426 4.7K 2 2

1

R406 22K 2 2 2

R407 560

VR12D 50K

VR13D 100K

1

1

R422 22K 1 6 2 1 C410 104M 1 2 -15V R418 2 12K R419 12K 10 1 VR14D 50K C411 563M 2 2 5 7 VR14C 50K 6 1 11 8 4 VR15B 500K 4 5 1 R423 150K 2 2 1

R424 100K

C415 683M 1 R425 150K

1

9

7

12

U14B BA4558N
D

D

fp-504
fp-504 REAR
1 2 3 4 5 6 7 8

CUSTOM

1

2

3

4

5

6

7

8

VCC 2 R149 1K 2 R151 47 C3198 2 1 2 C144 1 100P 2 2 Q105 A1023 1 1 Q108 D600 1 Q110 D718 1 R162 680 2

1

R166 15K

2

PROTECT

Q101 C3198 1
A

Q103 1 1

1

2

1

Q121 C3198 VEE

2

2

3

3

3

1

1

1

+15V

-15V 13 13 R143 100 2 2 2 2 R147 8.2K 32 R144 100

R154 1K 2 2

R155 4.7K 2 1

1

+ R158 0.15/5 2

3

A

C148 10/25 DC

R157 220 1/2W 2 2

1

1

1

R146 100

2

R145 100 32

2

1

R140 1K 1 CH INPUT 1 2 1

R141 1K 2 1 Q102 A1266 C142 102M 2 2 R150 1K

A1266

1

C145 100P 1 2 2

Q107 C3112

1

C143 33/25

R156 1.8K

1

1

3

2

1

C146 104M

2

R148 8.2K

1

1 +

1

1

1

R159 0.15/5 2 2 D101 1N4148

R164 2.2K R165 4.7/1W 2 2 C147 104M 2 R167 22K

C150 10P

2

R153 12K

3

2

1

1

1

2

Q501 K30

1

R501 100K

R142 22K

1

Q104

2

1 1 Q106 C1027 3 Q109 B631

1 Q111 B688

R152 47 2 2

2

B

2

3

2

1

1

B

TER1 4 R505 470K MUTE 1 2 3 1CH 1CH +

C501 103M 1 2

2

2CH +

1

2CH -

2

1

1

2

Q502 K30 R242 22K

2

R502 100K C242 102M 2 1

2

R249 1K 2

R251 47 C3198 2

2

C244 1

100P 2 Q205 A1023

1

1

Q208 D600 1

Q210 D718 1

1 R262 680 2

R266 15K

2

1

1

2

1

Q221 C3198
C

2

2

3

C

Q203 2 CH INPUT 1 R240 1K 2 1 R241 1K 2 Q201 C3198 13 13 R244 100 1 1 1

3

3

1

1

R254 1K 2

1

+ R258 0.15/5 2

3 C248 10/25 1

R255 4.7K 2 1 1 2 2 1 C246 104M 2 1 1 R257 220 1/2W 2 1

2

1 1

2 2

2

R248 8.2K

1 + R246 100 2 1

R243 100

1

1

3

R247 8.2K 32

R245 100 32

2

2

1

C243 33/25

R256 1.8K

2

R259 0.15/5 2 2 D201 1N4148

R264 2.2K R265 4.7/1W R267 22K 2 2 C247 104M

1 -15V +15V Q202 A1266

A1266

1

C245 100P 1 2 2

1

1

Q207 C3112

C250 10P

R253 12K

1

Q204

1

Q206 C1027 1 3 Q209 B631

1

R252 47
D

1

1 Q211 B688

fp-504
D

3

2

2

2

2

R250 1K

2

2

3

2

2

fp-504 AUDIO
1 2 3 4 5 6 7 8

CUSTOM

1

2

3

4

5

6

7

8

VCC 2 R349 1K 2 R351 47 C3198 2 1 2 C344 1 100P 2 2 Q305 A1023 1 1 Q308 D600 1 Q310 D718 1 R362 680 2

1

R366 15K

2

PROTECT

Q301 C3198 1
A

Q303 1 1

1

2

1

Q321 C3198 VEE
A

2

2

3

3

1

3

1

1

+15V

-15V 13 13 R343 100 2 2 2 2 R347 8.2K 32 R344 100

R354 1K 2 2

R355 4.7K 2 1

1

+ R358 0.15/5 2

3 C348 10/25 DC 1

R357 220 1/2W 2 2

1

1

1

R346 100

2

R345 100 32

2

1

R340 1K 3 CH INPUT 1 2 1

R341 1K 2 1 Q302 A1266 C342 102M 2 2 R350 1K

A1266

1

C345 100P 1 2 2

Q307 C3112

1

C343 33/25

R356 1.8K

1

1

3

2

1

C346 104M

2

R348 8.2K

1

1 +

1

1

R359 0.15/5 2 2 D301 1N4148

R364 2.2K R365 4.7/1W 2 2 C347 104M 2 R367 22K

C350 10P

2

R353 12K

3

2

1

1

1

2

Q503 K30

1

R503 100K

R342 22K

1

Q304

2

1 1 Q306 C1027 3 Q309 B631

1 Q311 B688

R352 47 2 2

2

B

2

3

2

1

1

B

TER1 4 3CH +

MUTE

3

3CH -

2

4CH +

1

4CH -

2

1

1

2

Q504 K30 R442 22K

2

R504 100K C442 102M 2 1

2

R449 1K 2

R451 47 C3198 2

2

C444 1

100P 2 Q505 A1023

1

1

Q408 D600 1

Q410 D718 1

1 R462 680 2

R466 15K

2

1

4 CH INPUT

1 R440 1K

2

1 R441 1K

2 Q401 C3198

1

1 1 1 1 R454 1K 2 R444 100 1 + R458 0.15/5 2 2 3 C448 10/25

3

C

1

2

1

Q421 C3198
C

2

2

3

Q403

R455 4.7K 2 R457 220 1/2W 1 1 2

13

2

1

1 R448 8.2K

2

R446 100

2

R445 100 32 32

2

2

1

C443 33/25

R456 1.8K

C446 104M

1

1

2

1

2

1

2

2

R448 8.2K

1

R443 100

13

+

1

1

3

1

1

3

2

R459 0.15/5 2 2 D401 1N4148

R464 2.2K R465 4.7/1W R467 22K 2 2 C447 104M 2

1 -15V +15V Q402 A1266

A1266

1

C445 100P 1 2 2

1

1

Q407 C3112

C450 10P

R453 12K

1

Q404

1

Q406 C1027 1 3 Q409 B631

1

D

R452 47 2 2

1

1 Q411 B688

fp-504
D

3

2

2

2

R450 1K

2

3

2

fp-504 AUDIO
1 2 3 4 5 6 7 8

CUSTOM

1

2

3

4

5

6

7

8

1 D1 1N4148 1 2 3 1 R3 1K 2 Q23 FQP50N06 Q25 FQP50N06 1 1 1 R6 47 2 3 3 R7 47 2 Q27 FQP50N06 C99 2 1

R99 1K

2 104M 2

CP1 104M 1 2

VCC CHASSIS GND R23 180/1W 1 2 1 RL2 1K + 2 C8 2200/35 2

2

2

1 R20 27 1/2W T1

+15V

FET A

1

1

2

12

1

1

1

A

R1 1K 2

Q1 A1266 2

2

2

1

2

1 2 5 12 2 3

3 2 1 1 1 1

1

Q2 A1266 1

R4 1K 2

R10 47 3 2 1

3

3

R11 47 2 1

2

R12 47 2 1

1

R2 1K 2

1

1

1

1

C6 103M 3 6 12

C7 222M

2

+ C9-1 2200/35 2 2

+

C9 2200/35

1

PWR GRN 2

DZ3 15V/1W

2

1

2

R5 47

C5 103M

4

1

+ R22 22/1W D7 YG225N2 D8 YG225C2

1 + C10 220/25

1

1 3

C8-1 2200/35

A

DZ2 15V/1W

+ 2 RL1 1K 1

1 D2 1N4148 FUSE1 25A 1 FUSE2

2

Q24 FQP50N06 2

2

2

2

2

2

Q26 FQP50N06

Q28 FQP50N06

R21 27 1/2W

R24 180/1W 1

3

1

FET B

C11 220/25

-15V

L1 2 C1 104C 1 2

VEE C4 1000/25 D501 1N4148 1 2 + 2 C31 1000/25 D502 1N4148 1 2 1 C30 1000/25 R507 10K 2 Q506 K30A 2 R506 10K 1 2 1 DZ4 5.6V 2 MUTE
B

2

1

1

1

1

1

25A TER2 B+ 1

1

2

2

2

2

2

D3 1N5402

+

C2 330/16

+ C3 1000/25

+

+

1

B

1

2

C502 10/50

2 RMT

1

3 GND 2

DZ1 7.5V 1 1 R27 4.7K 1 R25 10K 2
C

2

Q507 C3198 1

R41 100K 2 Q18 C3198 1 Q19 C3198 1 2 2 DC

1

2 3

Q17 A1266 2 Q16 A1023

1

1

3

2

1

1

1

R520 2.2K 2 2

R508 2.2K D6 1N4002

R39 28K

1

1

1 2

2

1

2

2

2

2

1

1

Q15 C3198

2

2

3

C12 103M 1 1 R26 10K 2

1

3

1

1

R52 1K 2

C13 104M

C19 330/16 + R54 10K R510 18K R34 2.2K R35 1M 1 2 2 2 2

FET A 16 15 14 13 12 11 10 FET B 9

2

1

1

1

2

1

+

2

2

C14 1U

IC301 TL494

1

2

1

2

3

4

5

6

7

IC302B KIA358 2
D

C17 104M 6 5

C20 104M 1 1 1 1 + C23 1/50

8

1

1

1

1

1

1

1

1

1

R51 1K 11 R29 10K

2

1

7 R509 10K + TH1 150K R33 2.2K 2 2 2 2 2 C18 103M 2 2 2 2

4

2

PRO RED 2

2

C16 330/16

C21 103M

R36 100K C22 472M
5 6 7

2

D50 1N4148

2

1

R37 10K

R38 3K

2

1

2

+

C15 10/50

1 R28 10K

R40 28K

3

D51 1N4148

3

+ R42 1K

3

4

+

D11 1N4148 1 2 PROTECT

C24 330/16

C

fp-504
D

fp-504 PWM
8

CUSTOM

fp-504

fp-504 PCB BOARD

A3

fp-504

fp-504 PCB BOARD

A3

fp-504

fp-504 PCB BOARD -VR A4

fp-504

fp-504 PCB BOARD -VR A4