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AUDIO/VIDEO MULTI-CHANNEL RECEIVER

INPUT SELECTOR
STANDBY/ON STANDBY DSP MODE STEREO EON MODE

/DTS THX CINEMA ADVANCED STANDARD

FL DIMMER

--OFF _ON

MPEG

MASTER VOLUME

ORDER NO.
DOWN UP

RRV2166

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

VSX-908RDS
VSX-908RDS-G
Type
HY/EW HY/GR HV HY ­

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model VSX-908RDS VSX-908RDS-G
­ ­ ­

Power Requirement
AC220-230V AC220-230V AC230V AC220-230V

The voltage can be converted by the following method.
AC240V, AC240V, AC240V, AC240V,

: Alter the wiring of the Power-supply block at the primary winding of Power-transformer referring to the "Line Voltage Selection" described
in Service Manual.

CONTENTS
1. SAFETY INFORMATION ...................................... 2 2. EXPLODED VIEWS AND PARTS LIST ............... 3 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ... 10 4. PCB CONNECTION DIAGRAM ......................... 48 5. PCB PARTS LIST ............................................... 71 6. ADJUSTMENT .................................................... 79 7. GENERAL INFORMATION ................................ 7.1 DISASSEMBLY ............................................ 7.2 PARTS .......................................................... 7.2.1 IC ............................................................ 7.2.2 DISPLAY ................................................. 7.3 REMOTE CONTROL UNIT .......................... 8. PANEL FACILITIES AND SPECIFICATIONS ....... 80 80 82 82 86 88 93

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
T ­ ZZK JULY 1999 Printed in Japan

VSX-908RDS, VSX-908RDS-G

1. SAFETY INFORMATION
This service manual is intended for qualified service technicians ; it is not meant for the casual do-ityourselfer. 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

NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or be of identical designation.

(slow operating fuse) on PCB indicate that replacement parts must

REMARQUE (POUR MODÈLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou de remplacement doivent avoir la même désignation.

(fusible de type lent) sur CCI indiquent que les pièces

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.

ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.

LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5mA.

2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER.

Device under test Test all exposed metal surfaces

Reading should Leakage not be above current 0.5mA tester

Also test with plug reversed (Using AC adapter plug as required)

Earth ground

AC Leakage Test

2

VSX-908RDS, VSX-908RDS-G

2. EXPLODED VIEWS AND PARTS LIST
NOTES:

· Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. · The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. · Screws adjacent to mark on the product are used for disassembly.
1 2 5 13 11 13 4 Refer to "7.3 REMOTE CONTROL UNIT". 12 3 (Except HY/GR Type) 14 (Except HV Type) 15, 16, 17, 18, 19, 20 (HY/EW and HY Types Only)

2.1 PACKING

10 7 (2/2) 7 (1/2)

8

9

(1) PACKING PARTS LIST
Mark No.
1 2 3 4 5 6 7 8 9 10

Description
AM Loop Antenna FM Wire Antenna Operating Instructions(English) Remote Control Unit Alkaline Dry Cell Battery (LR6, AA) ····· Front Pad Rear Pad Packing Case Packing Sheet

Part No.
ATB7009 ADH7010 See Contrast table (2) See Contrast table (2) VEM1012

Mark No.
11 NSP 12 13 14 15 16 17 18 19 20

Description
Polyethylene Bag (0.03×230×340) Warranty Card Spacer Operating Instructions Operating Instructions Operating Instructions Operating Instructions Operating Instructions Operating Instructions Operating Instructions

Part No.
Z21-038 ARY7022 AHB7032 See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2)

NSP

AHA7253 AHA7254 See Contrast table (2) RHC1023

(2) CONTRAST TABLE
VSX-908RDS/HY/EW, HY/GR, HV and VSX-908RDS-G/HY are constructed the same except for the following :
Mark No.
3 4 4 9 14 15 16 17 18 19 20

Symbol and Description
Operating Instructions (English) Remote Control Unit (CU-VSX162) Remote Control Unit (CU-VSX165) Packing Case Operating Instructions (German) Operating Instructions (French) Operating Instructions (Italian) Operating Instructions (Dutch) Operating Instructions (Swedish) Operating Instructions (Spanish) Operating Instructions (Portuguese)

Part No. VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks /HY/EW /HY/GR /HV -G/HY
ARB7187 AXD7214 Not used AHD7814 ARC7244 ARC7245 ARC7246 ARC7270 ARC7280 ARC7281 ARC7282 Not used AXD7214 Not used AHD7814 ARC7244 Not used Not used Not used Not used Not used Not used ARB7187 AXD7214 Not used AHD7814 Not used Not used Not used Not used Not used Not used Not used ARB7187 Not used AXD7236 AHD7815 ARC7244 ARC7245 ARC7246 ARC7270 ARC7280 ARC7281 ARC7282

3

VSX-908RDS, VSX-908RDS-G

2.2 EXTERIOR
(Except HV Type) 79 27 67 *1 77 *2 67 *1 77 *2 Note *1 : VSX-908RDS *2 : VSX-908RDS-G 81 (HV Type Only) 67 *1 66 *2 26 (Except HV Type) (Except HV Type) 78 67 *1 66 *2 82 73 11 71
N

20

80

67 *1 77 *2 73 73

26 (HV Type Only)

83 10 6

20 54 75 67 *1 68 66 *2 67 *1 66 *2

24 25

M

23 21 71 37 15

O

33 13
J

O

I

63

67 *1 77 *2 Refer to "2.4 FRONT PANEL SECTION". 58 72 43
L M

62

51 16 69 12 32 69 8
G J

30
H

K P

28

43 70

31 65

17 22

53 67 67 *1 66 *2 67 *1 66 *2 50 67
F

7 52 52 52 64 67 *1 77 *2 51 70
G

59

Refer to "2.3 HEAT SINK SECTION". 67 *1 55 77 *2 70 38

66

67 *1 66 *2
H

I

35 2

36 48 49 19

F

70
L

B

4 3

40

49 49
E

51 42 34 67 *1 66 *2 45 50 67 *1 77 *2 44 42 67 *1 77 *2 67 *1 66 *2
A

44 29

39 84

70 84 K P 5

67 *1 66 *2

67
N

E

9 18 67 *1
77 *2

67 *1 66 *2

4

VSX-908RDS, VSX-908RDS-G

(1) EXTERIOR PARTS LIST
Mark No.
NSP NSP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NSP 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

Description
····· EXTERNAL IN Assy A-PINJACK Assy CONNECTION Assy MAIN CONTROL Assy TRANS 2-1 ASSY DIODE Assy SP/PS Assy REGULATOR Assy TRANS 1 Assy TRANS 2-2 Assy VIDEO Assy S-VIDEO Assy ····· PRIMARY Assy DIGITAL-I/O Assy RF TERMINAL Assy DSP Assy V-AMP Assy AC Power Cord Power Transformer (T1) FM/AM TUNER Unit Fuse (FU1 : T4A) Fuse (FU4 : T2A) Fuse (FU5 : T2A) AC Cord Spacer Bonnet Case 2P Shield with Housing (J24) Lead Card 07P (J13) Lead Card 11P AD (J22) Lead Card 13P AD (J16) Lead Card 14P (J17) Lead Card 21P (J18) Lead Card 23P BD SLD (J12) Lead Card 26P (J15) Lead Card 28P (J23) Assy Holder Assy Holder B Card Spacer Card Spacer

Part No.
AWX7413 AWX7412 AWX7347 AWX7410 AWX7403 AWX7343 AWX7359 AWX7310 AWX7316 AWX7518 AWX7422 AWX7395 See Contrast table (2) AWX7396 AWX7376 AWX7272 AWX7309 See Contrast table (2) ATS7253 AXX7048 AEK-514 AEK-511 AEK-511 See Contrast table (2) See Contrast table (2) ADX7250 ADD7161 ADD7170 ADD7169 ADD7165 ADD7164 ADD7160 ADD7163 ADD7171 ANG7121 AMR7267 AEC7133 DEC1772

Mark No.
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84

Description
····· Cushion 55 Frame 26 Insulator Locking Card Spacer ····· ····· Panel Stay 26 PC Support PCB Holder PCB Holder PCB Mould PCB Spacer Rear Panel Shield Case ····· ····· Side Escutheon L Side Escutheon R ····· ····· Stud Cover Terminal Screw Under Base 26 Binder (BK-1) Screw Screw Screw Screw Screw Screw Screw Screw Screw Screw Screw Screw AC Socket 3P Caution Label Fuse Holder Fuse (T5A) Fan Motor Spacer Remo-con. Cushion

Part No.
PNM1316 ANG7238 PNW2766 DEC1908

NSP

NSP NSP NSP NSP

AND7031 VEC1549 AEC7057 PNW2100 AMR1525 AEC1372 See Contrast table (2) ANK7054

See Contrast table (2) See Contrast table (2)

NSP NSP

AEC7105 AKE-031 ANA7089 ZCA-BK1 BBT30P080FCC BBZ30P080FZK ABA1193 IBZ30P080FCC BBZ30P180FMC ABA1015 See Contrast table (2) See Contrast table (2) BBZ30P060FCC IBZ30P100FCC BBT30P080FZK BBZ30P080FCC See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) AXM7012 AEB1254 AEB7167

NSP

5

VSX-908RDS, VSX-908RDS-G

(2) CONTRAST TABLE
VSX-908RDS/HY/EW, HY/GR, HV and VSX-908RDS-G/HY are constructed the same except for the following :
Mark No.
15 20 26 26 27 54 58 58 59 59 72 73 78 79 80 81

Symbol and Description
PRIMARY Assy AC Power Cord AC Cord Spacer Cord Stopper Bonnet Case Rear Panel Side Escutheon L 98 Side Escutheon L D8 Side Escutheon R 98 Side Escutheon R D8 Screw Screw AC Socket 3p Caution Label Fuse Holder Fuse (T5A)

Part No. VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks /HY/EW /HY/GR /HV -G/HY
AWX7345 ADG7029 ANG1153 Not used AZN7808 ANC7742 AAK7660 Not used AAK7661 Not used AWX7345 ADG7029 ANG1153 Not used AZN7808 ANC7742 AAK7660 Not used AAK7661 Not used AWX7454 VDG1063 Not used CM-22B AZN7808 ANC7818 AAK7660 Not used AAK7661 Not used AWX7345 ADG7029 ANG1153 Not used AZN7809 ANC7866 Not used AAK7662 Not used AAK7663

BBT30P100FZK BBT30P100FZK BBT30P100FZK BBT30P100FCC FBT40P080FZK FBT40P080FZK FBT40P080FZK FBT40P080FNI AKP-502 AKP-502 Not used AKP-502 ARW7036 ARW7036 Not used ARW7036 Not used Not used VKR1003 Not used Not used Not used PEK1003 Not used

6

VSX-908RDS, VSX-908RDS-G

2.3 HEAT SINK SECTION
9 11 13 12 15 8 13 13

13 16 13 4 3 5

13 6

7

10 1 14 10 13 2 14 13 11 9 12 13 13

(1) HEAT SINK SECTION PARTS LIST
Mark No.
NSP NSP NSP NSP NSP NSP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Description
C-AMP N Assy C-AMP-P Assy OUTPUT-SL Assy OUTPUT-FL Assy OUTPUT-C Assy OUTPUT-FR Assy OUTPUT-SR Assy VL-TERMINAL Assy Heat Sink Heat Sink Holder B Heat Sink Holder A Power Supply Plate Screw Screw Screw Thermistor

Part No.
AWX7318 AWX7317 AWX7322 AWX7319 AWX7321 AWX7320 AWX7323 AWX7324 ANH7102 AMR7256 AMR7255 ANG7240 See Contrast table (2) ABA1082 IBZ30P080FCC AEX7004

NSP

(2) CONTRAST TABLE
VSX-908RDS/HY/EW, HY/GR, HV and VSX-908RDS-G/HY are constructed the same except for the following :
Mark No.
13

Symbol and Description
Screw

Part No. VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks /HY/EW /HY/GR /HV -G/HY
BBZ30P080FZK BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC

7

VSX-908RDS, VSX-908RDS-G

2.4 FRONT PANEL SECTION
35 42

35

35

35

40 35

41 36 13 1 39 29 26 24 4 34 10 6 7 43 27 31 2324 Cut 37 11 44 20 32 14 3 15 19 32 2
D

17
D

35 40

16
B

35
A

33

34 5 23 28 30 22 45 38 21

25

(1) FRONT PANEL SECTION PARTS LIST
Mark 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

Description
H. PHONE/F. VIDEO Assy DISPLAY Assy ROTARY ENCODER Assy Door Hinge L Door Hinge R Magnet Angle Door Panel ····· ····· Door Sheet

Part No.
AWX7342 AWX7414 AWX7405 See Contrast table (2) See Contrast table (2) ANG7241 See Contrast table (2) See Contrast table (2)

Mark No.
26 27 28 29 30 31 32 33 34 35 NSP 36 37 38 39 40 41 42 43 44 45

Description
LED Lens Name Plate Ring Spacer D5 FL Sheet D10 Volume Knob (MASTER VOLUME) Rotary Knob (INPUT SELECTOR) Screw Screw Screw Screw Screw Cord with Plug Panel Base Magnet Cord Clamper P-SW Assy Power Button MG Screw GND Spring Screw

Part No.
PNW2019 See Contrast table (2) AWL7038 AAK7629 See Contrast table (2) See Contrast table (2) ABA7053 PBA1096 BBZ30P060FCC BPZ30P080FMC See Contrast table (2) ADH7020 See Contrast table (2) AMF7002 RNH-184 AWX7330 See Contrast table (2) See Contrast table (2) ABH7172 See Contrast table (2)

NSP

NSP

Display Panel See Contrast table (2) ····· Power Button (STANDBY/ON) See Contrast table (2) MR Button (MULTIROOM) See Contrast table (2) Lead Card 32P (J11) ADD7159 Lead Card 05P (J14) Lead Card 06P (J20) ····· Lead Card 12P (J21) Damper Assy (60) Sub Panel Volume Ring Nut Door Cusion Front Panel ADD7162 ADD7167 ADD7166 AXA7076 See Contrast table (2) See Contrast table (2) NK90FUC See Contrast table (2) See Contrast table (2)

8

VSX-908RDS, VSX-908RDS-G

(2) CONTRAST TABLE
VSX-908RDS/HY/EW, HY/GR, HV and VSX-908RDS-G/HY are constructed the same except for the following :
Mark No.
4 4 5 5 7 7 10 10 11 11 13 13 14 14 21 21 22 22 24 24 25 25 27 27 30 30 31 31 36 38 38 42 42 43 45

Symbol and Description
Door Hinge 26 L Door Hinge D10 L Door Hinge 26 R Door Hinge D10 R Door Panel 98 Door Panel E07 Door Sheet 98R Door Sheet 98RG Display Panel SD Display Panel SDG Power Button Power Button G MR Button 26 MR Button G Sub Panel 98 Sub Panel D8 Volume Ring 98 Volume Ring D10 Door Cusion B Door Cusion G Front Panel 908 Front Panel 98RG Name Plate B Name Plate G Volume Knob 98 Volume Knob 98HL Rotary Knob 29 Rotary Knob E07 Screw Panel Base 98 Panel Base D8 Power Button M Power Button MG Screw Screw

Part No. VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks /HY/EW /HY/GR /HV -G/HY
AMR7252 Not used AMR7253 Not used ANB7199 Not used AAK7664 Not used AAK7630 Not used AAD7440 Not used AAD7514 Not used ANB7200 Not used AAH7028 Not used AEB7152 Not used ANB7173 Not used PAN1376 Not used AAB7199 AMR7252 Not used AMR7253 Not used ANB7199 Not used AAK7664 Not used AAK7630 Not used AAD7440 Not used AAD7514 Not used ANB7200 Not used AAH7028 Not used AEB7152 Not used ANB7173 Not used PAN1376 Not used AAB7199 AMR7252 Not used AMR7253 Not used ANB7199 Not used AAK7664 Not used AAK7630 Not used AAD7440 Not used AAD7514 Not used ANB7200 Not used AAH7028 Not used AEB7152 Not used ANB7173 Not used PAN1376 Not used AAB7199 Not used AMR7250 Not used AMR7251 Not used ANB7175 Not used AAH7057 Not used AAK7631 Not used AAD7485 Not used AAD7541 Not used ANB7207 Not used AAH7016 Not used AEB7153 Not used ANB7176 Not used PAN1377 Not used

Not used Not used Not used AAB7210 AAB7221 AAB7221 AAB7221 Not used Not used Not used Not used AAB7209 BBZ30P080FZK BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC AMB7637 AMB7637 AMB7637 Not used Not used Not used Not used AMB7572 AAD7442 AAD7442 AAD7442 Not used Not used Not used Not used AAD7491 BBZ30P050FZK BBZ30P050FZK BBZ30P050FZK BBZ30P050FMC BBT30P080FZK BBT30P080FZK BBT30P080FZK BBT30P080FCC

9

VSX-908RDS, VSX-908RDS-G

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
UNIT AXX7046 8 CN902

B

1

CN1352 4

C
IC351

D
IC101

4

CN1001 CN1001 14 4

Y
IC103 15 3 1 CN104 16 1 CN9801 IC9203 IC9201 IC9202 16 9

B R

3 6 11 3 CN7201

C

2 CN906 5 IC9151 9 IC9101 26 IC9601 IC9321

12 10

16

C

4 2

B

17 18 IC9071 CN1001 IC9411 IC9421 IC9401 CN9801 8 6

CN5006

3

5

6

8

DSP+5V

AD+5V

A+15V

3

3 5 7 9 11 CN9803 CN9804 2

W

5 7 9 11 CN1201

M
CN1302 9, 8

X

CN1250 2

C
4, 1 5, 6 7, 8 CN1301

IC1301 7, 2 IC1303

5, 8 4, 3 1, 2

3, 4 IC1302

A R
CN7201 5 V CN701 4 3 7 5 9 13 11

CN1101

A-15V

CN702 2

IC701 1 V 1 2 IC751 15 15 IC701 13 V 3

P
15 13 12 V 14

IC701

10

VSX-908RDS, VSX-908RDS-G

T+12V

: AUDIO SIGNAL ROUTE
V Y C

IC5003 IC5001 IC5002 D5001­D5004 D5005­D5008 DSP +5V IC5008 D5009 ST +5V S6001 IC6001 D6001-D6004 T6001 RY6001 AC IN

: VIDEO SIGNAL ROUTE : Y SIGNAL ROUTE
A+15V

U+5.6V IC5007

A+15V A-15V

M
V+5.6V V-5.6V T+12V A-15V
CN5003 4 5 6 8 9

AD+5V V+5.6V V-5.6V

IC5004 IC5005 IC5006

: C SIGNAL ROUTE

M
6 IC7501, IC7502

VH+ VH-

Q4501 Q4502

D4501­D4504 T1 POWER TRANSFORMER D3001­D3002

V

D

J
OTHERS IC108 CN501 4 25

VL+ VL-

Y6 Y7

K HB
R2512

CN3003 3 RY3105

CN7201 9

E
26 5 IC112 7 CN109 14 CN501 10 Q510

IC104 IC105 24 5, 7 3 Q271 13, 15 7, 11 6, 10 9, 12 7, 10 25 1 26 27

+3.5 ~ +8.5dB (Normally : +8.5dB) 3 1 8, 10

L
Y9

R

JA7201

CN2001 21, 19 Q2501 Q2524

IC107

CN502

IC7541, IC7542 +3.5 ~ +8.5dB (Normally : +8.5dB) 3 1 13, 15

F G
16, 14 Q2541 Q2544

RY3101

6, 9 9, 11 18 CN104 19 17

6, 4 IC114

8, 2

8

16 Q550

HC
R2552

Y11 RY3103

IC107 19 IC7601, IC7602 +3.5 ~ +8.5dB (Normally : +8.5dB) 3 1 3, 4

20

4 IC113

2

16

8 Q610

26, 24 Q2601 Q2504

HA
R2612

RY3104 Y12

RY3102 IC107

CN103 2, 3 Q107 Q108 4, 9 IC115 Q111 Q112 Q109 Q110

8, 7

15 14 13 12 2 7 5 9 13 IC801 Y 3

IC801 3 Y C

Q
CN804 2

1

IC851 3 13 14 12 IC852 C Y

1 IC802

7 5 9 13 3 CN804 6 7

6 7 CN7201

R

11 5 3 15

4

11 IC852 15 2 15 C 1 IC852 Y C

11

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.2 OVERALL WIRING CONNECTION DIAGRAM

T
A

ROTARY ENCODER ASSY (AWX7405)

S
ADD7167

DISPLAY ASSY (AWX7414)

E E 1/2, E 2/2
V-AMP ASSY (AWX7309)
ADD7159

ADD7160

HE
C-AMP-P ASSY
B
ADD7161

OUTPUT-SR ASSY (AWX7323) OUTPUT-FR ASSY (AWX7320) OUTPUT-C ASSY (AWX7321) OUTPUT-FL ASSY (AWX7319) OUTPUT-SL ASSY (AWX7322) VL-TERMINAL ASSY (AWX7324)

G (AWX7317)

HD HC HB HA I

Y Y 1/5- Y 5/5

DSP ASSY (AWX7272)

ADD7162

D D 1/3- D 3/3

C

MAIN CONTROL ASSY (AWX7410)

M REGULATOR ASSY
(AWX7310)

ADD7170

ADD7163

DIGITAL-I/O ASSY (AWX7396)

RF TERMINAL ASSY (AWX7376)

D

W

12
1

A

EXTERNAL IN ASSY (AWX7413)
2

B A-PINJACK ASSY (AWX7412)
3 4

VIDEO ASSY (AWX7422)

X

P

ADD7164

C

CONNECTION ASSY (AWX7347)

5

6

7

8

VSX-908RDS, VSX-908RDS-G

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
· CAUTION : Heatsink's DC level is equal to +B or -B. Don't touch them or you will be electricary shocked.
ADD7166

A

R
H. PHONE/F. VIDEO ASSY (AWX7342)

O
ADD7171

TRANS 2-2 ASSY (AWX7518)

N
TRANS 1 ASSY (AWX7316)

U
P-SW ASSY (AWX7330)

DIODE ASSY (AWX7343)

C-AMP-N ASSY (AWX7318)

T1 POWER TRANSFORMER (ATS7253)

B

K

F

J

TRANS 2-1 ASSY (AWX7403)

C

V
ADD7165

PRIMARY ASSY (Except HV Type : AWX7345) (HV Type Only : AWX7454)

S-VIDEO ASSY (AWX7395)

L
SP/PS ASSY (AWX7359)
D

Q

13
5 6 7 8

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.3 EXTERNAL IN, A-PINJACK and CONNECTION ASSYS
A

A
EXTERNAL IN ASSY (AWX7413)
CN1101

JA1101-JA1103 : AKB7095

B
B

LD

LD

A-PINJACK ASSY (AWX7412)
TV TV LD

JA1015: AKB7048 JA1016: AKB7120
V1 V1

CN1001

MD

JA1011-JA1013 : AKB7048

V2

V2

V1

C
LD TV

MD

CN1002
P

D
P P

14

A B
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

C

CONNECTION ASSY (AWX7347)

A

CN1302

CN1301

D 1/3 CN103

B

CN1353 CN1351

P LD MD TV V2 V1 V2 MD

D 1/3 CN101
V1

C
LD TV

P

P P P

LD TV V1 V2

: AUDIO SIGNAL ROUTE (LD) : AUDIO SIGNAL ROUTE (TV) : AUDIO SIGNAL ROUTE (VCR1) : AUDIO SIGNAL ROUTE (VCR2) : AUDIO SIGNAL ROUTE (MD) : AUDIO SIGNAL ROUTE (PHONO)

CN1352
P

MD P

D

5

6

7

C
8

15

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.4 MAIN CONTROL ASSY (1/3)
: The power supply is shown with the marked box.
A

D 2/3

D 2/3

CN906
52045-0545

B

S

CN7005

TU

TU

D 2/3

1SS355

1SS355

T2 CN941 (1/2) T2 TU T2

LD

CD JA911

CD MD

V1

V2 TV CD P T2 TU

C

CN941 : AKB7075 JA911 : DKB1045

CN941 (2/2)

LD

V2

16

D 1/3
1

CN101

C
2

MD

D

TV

V1

P

CN1353
3 4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

D 1/3
MAIN CONTROL ASSY (AWX7410)
LD TV V1 V2 MD

: AUDIO SIGNAL ROUTE : AUDIO SIGNAL ROUTE (LD) : AUDIO SIGNAL ROUTE (TV) : AUDIO SIGNAL ROUTE (VCR1) : AUDIO SIGNAL ROUTE (VCR2) : AUDIO SIGNAL ROUTE (MD)

P TU CD T2 MR

: AUDIO SIGNAL ROUTE (PHONO) : AUDIO SIGNAL ROUTE (TUNER) : AUDIO SIGNAL ROUTE (CD) : AUDIO SIGNAL ROUTE (TAPE2) : AUDIO SIGNAL ROUTE (MR)

A

B

1/2

C

2/2

CN104

CN103

D

M CN5004

C

CN1302

5

6

7

D 1/3
8

17

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.5 MAIN CONTROL ASSY (2/3)

D 1/3
A

D 3/3

D 2/3 MAIN CONTROL ASSY
(AWX7410)

B

C

D 1/3

D

18

D 2/3
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

D 3/3
: The power supply is shown with the marked box.
: AUDIO SIGNAL ROUTE

A

B

E 1/2
CN501

CN105 C
113 (2/3)

113 (1/3)

113 (3/3)

Q107 - Q112 : HN1C03F

113 : AKB7089

D

D 1/3

5

6

7

D 2/3
8

19

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.6 MAIN CONTROL ASSY (3/3)
A CN902

Y 4/5 CN9551

To FM/AM TUNER UNIT

CN903

TU

1SS355

B
TU

TU

D905-D908 1SS355

C

D 2/3
D901-D904 1SS355

D

CN901

1SS355

CN920

M CN5005
20

M CN5008

D 3/3
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G
: The power supply is shown with the marked box.

D 3/3
MAIN CONTROL ASSY (AWX7410)

S

CN7001
A

CN904

B

C

CN905

CN108

P M CN5003

CN701

D

5

6

7

D 3/3
8

21

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.7 V-AMP ASSY (1/2)
A

E 1/2 V-AMP ASSY
(AWX7309)
IC7601 (1/2) UPC4570G2

IC7501 (1/2) UPC4570G2

B

CN501

E 2/2
IC7541 (1/2) UPC4570G2

D 2/3
CN105
C

IC7521 (1/2) UPC4570G2

E 2/2
IC7621 (1/2) UPC4570G2 505, 506 VEF1040

D

22

E 1/2
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A
: AUDIO SIGNAL ROUTE

IC7601 (2/2) UPC4570G2

IC7501 (2/2) UPC4570G2

B

IC7541 (2/2) UPC4570G2

E 2/2
C

IC7521 (2/2) UPC4570G2

IC7621 (2/2) UPC4570G2

D

5

6

7

E 1/2
8

23

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.8 V-AMP ASSY (2/2)
A

B

To THERMISTOR

CN504

E 1/2

E 1/2
C

E 1/2

D

E 1/2
24

E 2/2
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

E 2/2 V-AMP ASSY
(AWX7309)

A

: AUDIO SIGNAL ROUTE

CN502

B

E 1/2

F
CN2001
C

E 1/2

D

5

6

7

E 2/2
8

25

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.9 C-AMP-N, C-AMP-P, OUTPUT-SL, OUTPUT-FL, OUTPUT-C, OUTPUT-FR, OUTPUT-SR and VL-TERMINAL ASSYS
A

F
C-AMP-N ASSY (AWX7318)
2SC1740C

2SA970

B

E 2/2
CN502

CN2001

CN2601

CN2501

C CN2602 CN2603

L

CN2502 CN2503

HA

2SA970

L

HB
OUTPUT-FL ASSY (AWX7319)

OUTPUT-SL ASSY (AWX7322)
CN2604 CN2504 3

G
C-AMP-P ASSY (AWX7317)

D

26

F G HA HB
1

2

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

: AUDIO SIGNAL ROUTE

A

2SA970

2SA970

2SA970

B

CN2541

CN2521

CN2621

C CN2542 CN2543

L

L

CN2622 CN2623

CN2522 CN2523

L

HC

HD

HE
OUTPUT-SR ASSY (AWX7323)

OUTPUT-C ASSY (AWX7321)
CN2544 CN2524

OUTPUT-FR ASSY (AWX7320)
CN2624

L

D

VL-TERMINAL ASSY (AWX7324)

I
27
8

5

6

F G HC HD HE I
7

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.10 TRANS 2-1, DIODE and SP/PS ASSYS
A
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 49102.5 MFD, BY LITTELFUSE INC. FOR IC4501, IC4502 (AEK7014).

HE
I I

J
TRANS 2-1 ASSY (AWX7403)
R4501­R4503 : 22 C4501­C4502 : 0.033/250
R4501 C4501

K

DIODE ASSY (AWX7343)

B

POWER TRANSFORMER

4001

FU4, FU5 : T2A AEK-511
R4503 C4503 ACH1237 (NP1/100)

C

· NOTE FOR FUSE REPLACEMENT CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY.
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.750 MFD, BY LITTELFUSE INC. FOR IC3001 (AEK7007).

V
CN6003
750mA

CN3001

D

CN3002

TO FAN

28

J K L
1

R4502 C4502

2

3

3001

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

HA HE
A

I

L

SP/PS ASSY (AWX7359)
CN3101

CN3102 B

C

M
CN5001

3004

M
CN5002
D CN3003

5

6

7

L
8

29

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.11 REGULATOR, TRANS 1 and TRANS 2-2 ASSYS
A

M REGULATOR ASSY (AWX7310)
CN5001
52147-0810

L
3004

CN5002

L

CN3003

D5010

B

1SS133

C

N

TRANS 1 ASSY (AWX7316)
ACH1237 NP 1/100 C5502 C5501

5501

O
D

J

TRANS 2-2 ASSY (AWX7518)

R5502 100K

R5501

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.200 MFD, BY LITTELFUSE INC. FOR IC5009, IC5010 (AEK7023). CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491004 MFD, BY LITTELFUSE INC. FOR IC5501 (AEK7018).

30

M N O
1

POWER TRANSFORMER
2 3 4

5009

V

22 0.47/50

MTZJ5.1B

MTZJ10C

5

6

7

8

VSX-908RDS, VSX-908RDS-G

: AUDIO SIGNAL ROUTE

A

CN5003

D 3/3
CN108

CN5004

B

D 1/3
CN104

CN5008

D 3/3
CN920

C

D 3/3
CN901

CN5005

D CN5006 CN5007

Y 2/5
5

CN9802

Y 2/5
6

CN9801

7

M
8

31

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.12 VIDEO and S-VIDEO ASSYS

P
A

VIDEO ASSY (AWX7422)
702 : AKB7017 707 : AKB7020

CN702
Y Y

706(2/2)

702(2/2)

706(1/2)

707

1SS355

Y

B

JA703(2/2)

702(1/2)

JA703(1/2)

1SS355

C

Y

Y

1SS355

D CN701

32

P
1

D 3/3 CN905
2 3 4

1SS355

5

6

7

8

VSX-908RDS, VSX-908RDS-G

Q

S-VIDEO ASSY (AWX7395)
: VIDEO SIGNAL ROUTE
Y C

A
: Y SIGNAL ROUTE : C SIGNAL ROUTE

CN802 (2/2)
AKP7020

C

C

Y

Y

Y C C C 1SS355 C Y C Y

CN801 (3/3)
AKP7043

B

CN801 (1/3)
Y AKP7043 Y

Y

1SS355

CN801 (2/3)
AKP7043

C

1SS355

1SS355

Y

Y

CN803 (1/2)
C Y C AKP7020

C

CN804
C Y Y

Y

CN802 (1/2)
C AKP7020

C C C Y

Y

CN803 (2/2)
AKP7020

C

C

Y C

Y

Y C C

D

5

6

7

Q
8

33

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.13 H. PHONE/F. VIDEO, DISPLAY and ROTARY ENCODER ASSYS

R
A

H. PHONE/F. VIDEO ASSY (AWX7342)
CN7201 CN7004

B

C

D

S7001 : STANDARD S7002 : STEREO S7003 : DSP MODE S7004 : ADVANCED S7005 : THX CINEMA S7006 : STAND BY/ON S7007 : EXTERNAL DECODER IN S7008 : SPEAKERS S7009 : DIRECT S7010 : BASS ­ S7011 : LOUDNESS S7012 : BASS + S7013 : MIDNIGHT S7014 : TREBLE ­ S7015 : DIGITAL NR S7016 : TREBLE + S7017 : SIGNAL SELECT S7018 : INPUT ATT S7019 : MPX S7020 : TAPE2 MONITOR S7021 : CLASS S7022 : RF ATT S7023 : FM/AM S7024 : MEMORY S7025 : TUNING ­ S7026 : STATION ­ S7027 : TUNING + S7028 : STATION + S7029 : FL DIMMER S7030 : EON MODE

S

DISPLAY ASSY (AWX7414)
CN7005

D 1/3 CN906
34

R S
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

CN7002

CN7101 B

T

ROTARY ENCODER ASSY (AWX7405)

C

2SA1037K

D CN7001

D 3/3 CN904
5 6 7

S T
8

35

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.14 PRIMARY and P-SW ASSY
A

U

P-SW ASSY (AWX7330)
CN6801

V
B

PRIMARY ASSY

1SS133

51048-0300

(Except HV Type : AWX7345) (HV Type Only : AWX7454)

J6000

L
CN3001
D6001-D6004 : S5688G

CN6003
KP200TA4L

DTC143ES

C

ADX7279 1SS133

N
ADX7280

LIVE

FU1 : T4A AEK-514

ACG7020

ACG7020

AC IN

NEUTRAL

CN6002
RKP1751

EXCEPT HV TYPE

D

36

U V
1

2

3

4

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.15 DIGITAL-I/O and RF TERMINAL ASSYS

W

DIGITAL-I/O ASSY (AWX7396)

A

: AUDIO SIGNAL ROUTE

JA1204 (1/2) AKB7095

B
JA1204 (2/2) AKB7095

CN1201
GP1F37R1

Y 2/5
GP1F37R1

CN9803

C

GP1F38T2

X

RF TERMINAL ASSY (AWX7376)
CN1250

VKB1074

Y 2/5
CN9804

D

1

2

3

W X
4

37

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.16 DSP ASSY (1/5)

Y 1/5 DSP ASSY
A

(AWX7272)

Y 2/5
MA

B

C

D

MB Y
38

4/5

Y 1/5
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

B

C

D

5

6

7

Y 1/5
8

39

1

2

3

4

VSX-908RDS, VSX-908RDS-G

3.17 DSP ASSY (2/5)
A

: The power supply is shown with the marked box.

Y 2/5 DSP ASSY
(AWX7272)
: AUDIO SIGNAL ROUTE

B

ME

MF

Y 4/5

Y 5/5 M
CN5007

C

CN9804

Y 1/5
MA

ERR

Y 5/5

X
CN1250

CN9803

Y 3/5
PCMD

D

40

W CN1201

Y 2/5
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G
CN9802

A

M
CN5006

B

Y 3/5 Y 4/5
MG MP

C

D

5

6

7

Y 2/5
8

41

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.18 DSP ASSY (3/5)

Y 3/5 DSP ASSY
A

(AWX7272)

Y 4/5
MJ

MI
B

Y 4/5

MG

Y 2/5

C

PCMD

Y 2/5

D

42

Y 3/5
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A
: AUDIO SIGNAL ROUTE

B

C

D

5

6

7

Y 3/5
8

43

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.19 DSP ASSY (4/5)

Y 4/5 DSP ASSY
A

(AWX7272)

Y 3/5 MJ Y 2/5
MF

Y 5/5
MO

B

C

Y 1/5

MB

VSX-29TX, VSX-27TX ONLY

CN9551 D

D 3/3 CN903

44

Y 4/5
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

: AUDIO SIGNAL ROUTE

A

Y 5/5
MN

B

C

Y 2/5
MP

Y 3/5
MI
D

5

6

7

Y 4/5
8

45

1

2

3

4

VSX-908RDS, VSX-908RDS-G 3.20 DSP ASSY (5/5)
A

Y 4/5
MN

Y 5/5
DSP ASSY (AWX7272)

B

C

Y 2/5
ERR

Y 4/5 MO
D

46

Y 5/5
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

: AUDIO SIGNAL ROUTE

A

Y 2/5 ME

B

C

D

5

6

7

Y 5/5
8

47

VSX-908RDS, VSX-908RDS-G

4. PCB CONNECTION DIAGRAM
NOTE FOR PCB DIAGRAMS :
1. Part numbers in PCB diagrams match those in the schematic diagrams. 2. A comparison between the main parts of PCB and schematic diagrams is shown below.
Symbol In PCB Diagrams Symbol In Schematic Diagrams B C E B C E Part Name

3. The parts mounted on this PCB include all necessary parts for several destinations. For further information for respective destinations, be sure to check with the schematic diagram. 4. View point of PCB diagrams.

Connector
Transistor

Capacitor

B C E B B C E D D G S G S D G S C E B C E

SIDE A
Transistor with resistor

Field effect transistor

P.C.Board

Chip Part

SIDE B

Resistor array

3-terminal regulator

48

1

2

3

4

VSX-908RDS, VSX-908RDS-G

4.1 EXTERNAL IN, A-PINJACK and CONNECTION ASSYS

B A-PINJACK ASSY

A

C CONNECTION
ASSY
B

IC1302

IC1351

IC1303 IC1301

C

D CN103

D CN101

A EXTERNAL IN ASSY

D

(ANP7308-D)

SIDE A
1 2 3

A B C
4

49

1

2

3

4

VSX-908RDS, VSX-908RDS-G

4.2 MAIN CONTROL ASSY
A

C CN1302 S CN7005 P CN701 To FM/AM TUNER UNIT

B

C

C CN1353
IC101 Q114 Q113

M CN5003
Q991 Q272 Q271

D

50

D
1

SIDE A
2 3 4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

D MAIN CONTROL ASSY
Y
CN9551
B

S
CN7001

E
CN501
C

(ANP7307-B)

M CN5004
IC108 IC114 IC113

M CN5008 M CN5005
IC115

D

5

6

7

D
8

51

1

2

3

4

VSX-908RDS, VSX-908RDS-G

A

D MAIN CONTROL ASSY

B

C

Q904 Q901

IC901

Q905 IC107

Q903 Q902 IC112

IC104

IC105

D

52

D
1

SIDE B
2 3 4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

B

C

(ANP7307-B)

IC105

Q902 IC103 IC109

Q251 Q252 IC102 IC110

Q109 Q107 Q111

Q110 Q108 Q112

D

5

6

7

D
8

53

1

2

3

4

VSX-908RDS, VSX-908RDS-G

4.3 V-AMP ASSY
A

D CN105

E V-AMP ASSY

Q561

B

Q610

Q510

Q550

Q530

Q630

Q7601 Q7501 Q7541 Q7521 Q7621

C

Q603

Q503

Q543

Q523

Q623

Q607 Q606

Q507 Q506

Q547 Q546

Q527 Q526

Q627 Q626

Q608 Q609

Q508 Q509

Q548 Q549

Q528 Q529

Q628 Q629

D

To THERMISTOR

F CN2001
54

E
1

(ANP7310-C)

SIDE A
2 3 4

1

2

3

4

VSX-908RDS, VSX-908RDS-G

E V-AMP ASSY

A

IC581

B

IC7622 IC7522 IC7542 IC7502 IC7602

IC7621 IC7521 IC7541 IC7501 IC7601

C

Q624 Q621

Q524 Q521

Q544 Q541

Q504 Q501

Q604 Q601

D

(ANP7310-C)

SIDE B
1 2 3

E
4

55

1

2

3

4

VSX-908RDS, VSX-908RDS-G

4.4 C-AMP-N, C-AMP-P, OUTPUT-SL, OUTPUT-FL, OUTPUT-C, OUTPUT-FR, OUTPUT-SR and VL-TERMINAL ASSYS
A

G C-AMP-P ASSY

OUTPUT-SL ASSY

Y7

Y17

Y6

L
Y12

HA

I
C

VL-TERMINAL ASSY

F

C-AMP-N ASSY

E CN502

D
VR2601 Q2002 Q2001 Q2603 Q2602 VR2501 Q2503 Q2502

56

F G HA HB I
1 2

SIDE A
3 4

HB

OUTPUT-FL ASSY

B

L

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

OUTPUT-SR ASSY

OUTPUT-FR ASSY

OUTPUT-FL ASSY

B

OUTPUT-C ASSY

L
Y13

L
Y9

L
Y11

L
Y10

L
Y14

HD

HB

HC

HE

C

(ANP7309-C)

D
2501 Q2503 Q2502 VR2541 Q2543 Q2542 VR2521 Q2523 Q2522 VR2621 Q2623 Q2622

5

6

F G HB HC HD HE
7 8

57

1

2

3

4

VSX-908RDS, VSX-908RDS-G 4.5 TRANS 2-1, DIODE, TRANS 1 and TRANS 2-2 ASSYS
Line Voltage Selection
A Line Voltage can be changed by the following modification: 1. Disconnect the AC power cord. 2. Remove the cover. 3. Change the connection wire from TRANS 1 ASSY (Terminal No. Y6002) to AMP ASSY (Terminal No. Y6002) as follows. Voltage Terminal No. of TRANS 1 ASSY 220-230V Y6002/HY/HL/HV 240V Y6002/J,/KU 4. Stick a line voltage label on the rear panel. Description Part No. 220V label AAX-193 5009 240V label AAX-192

V Y6001 V Y6002
220-230V 240V

N TRANS 1
ASSY

M

O TRANS 2-2
ASSY
B (ANP7308-D) (ANP7308-D)

T1 POWER TRANSFORMER

J

TRANS 2-1 ASSY
IC4501 IC4502

C

Q4505 Q4502

Q4504

Q4503 Q4501

(ANP7309-C)

L 3001

L Y1

K DIODE
ASSY
D

L Y4
58

L Y5

(ANP7309-C)

J K N O
1

SIDE A
2 3 4

1

2

3

4

VSX-908RDS, VSX-908RDS-G 4.6 SP/PS ASSY
A

L

SP/PS ASSY

M CN5002

HD
Y10

HB Y9
Q3156 Q3159

Q3151

B

HC
Y11
Q3154

Q3005

I
Y17

Q3155 Q3153

Q3152

HE Y13 I Y6 K Y4 HA Y12 J Y1 K Y5 HE
Y14 I Y7

C

Q3504 IC3001

Q3502 Q3503 Q3501

D (ANP7309-B)

M CN5001 V CN6003 SIDE A
1 2 3

J 4001

L
4

59

1

2

3

4

VSX-908RDS, VSX-908RDS-G

A

4.7 REGULATOR, PRIMARY and P-SW ASSYS D CN108 REGULATOR ASSY

M

D CN104

Y

IC5010 IC5009

B

IC5006

IC5005

IC5004

C

U

N Y6

P-SW ASSY

N Y6

D

(ANP7310-C)

AC IN

L CN3003

L 3004

60

M U
1

SIDE A
2 3 4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

CN104

Y CN9801

D CN920

D CN901

Y CN9802

A

O
5501
B

(ANP7308-D)

IC5002

IC5001

IC5003

IC5007

IC5008

V

PRIMARY ASSY

C

N Y6001 N Y6002

NEUTRAL

L
CN3001
D

AC IN
LIVE

(ANP7308-D)
Q6001 IC6001

5

6

7

M V
8

61

1

2

3

4

VSX-908RDS, VSX-908RDS-G 4.8 VIDEO ASSY
A

P VIDEO ASSY

Q701 Q751

Q753 Q752

Q754

B

SIDE A

D CN905

Q CN804

P VIDEO ASSY
C

Q755

IC752

IC751 IC731

D

SIDE B

IC701

62

P
1

2

3

(ANP7307-B) 4

1

2

3

4

VSX-908RDS, VSX-908RDS-G 4.9 S-VIDEO ASSY

Q S-VIDEO ASSY
A

Q853

Q852

B

IC851 Q851

SIDE A

P CN702

Q S-VIDEO ASSY
C

IC852 IC831

IC802 Q831 Q833 Q834

IC801

D

SIDE B

(ANP7307-B)

1

2

3

Q
4

63

1

2

3

4

VSX-908RDS, VSX-908RDS-G

4.10 H. PHONE/F. VIDEO, DISPLAY and ROTARY ENCODER ASSYS
A

B

S DISPLAY ASSY

C

D

R H. PHONE/F. VIDEO
ASSY
Q7201 Q7202 Q7401 Q7403 IC7401

64

R S
1

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

T

ROTARY ENCODER ASSY

B

D
CN906

D
CN904

C

(ANP7010-C)
D

SIDE A
5 6 7

S T
8

65

1

2

3

4

VSX-908RDS, VSX-908RDS-G

A

T ROTARY ENCODER ASSY

B

S DISPLAY ASSY

C

D

Q7053

66

S T
1

Q7052 Q7002 IC7051 Q7051 Q7054

Q7005

IC7001

2

3

4

5

6

7

8

VSX-908RDS, VSX-908RDS-G

A

B

C

Q7001

(ANP7010-C)

R H. PHONE/F. VIDEO
ASSY
IC7071

D

SIDE B
5 6 7

R S
8

67

1

2

3

4

VSX-908RDS, VSX-908RDS-G 4.11 DSP ASSY W CN1201 X CN1250
A
IC9151 Q9001-Q9003 Q9032 Q9004-Q9007

Y DSP ASSY

Q9101-Q9104

IC9071 IC9091 IC9101

Q9201-Q9204

IC9501

IC9102 IC9204 IC9203

B

IC9103

IC9401 IC9311 IC9321

IC9601 IC9602

M
CN5007

IC9361 IC9411 IC9601

C

Q9603 IC9371 IC9421 IC9372

Q9605 Q9606 Q9811-Q9813 Q9609 Q9608 IC9374

M
CN5006

IC9391

D

(ANP7311-C)

68

Y
1

D CN903 SIDE A
2 3 4

1

2

3

4

VSX-908RDS, VSX-908RDS-G

Y DSP ASSY
A

IC9041

IC9201 Q9205 IC9202

B

IC9701

IC9602 IC9702

C
IC9703

IC9603

IC9704

IC9604

IC9705

D

(ANP7311-C)

SIDE B
1 2 3

Y
4

69

1

2

3

4

VSX-908RDS, VSX-908RDS-G

4.12 DIGITAL-I/O and RF TERMINAL ASSYS
A

X RF TERMINAL
ASSY
Y CN9804

W DIGITAL-I/O ASSY

B

Y CN9803

SIDE A

C

X RF TERMINAL
D

ASSY

W DIGITAL-I/O ASSY

(ANP7307-B)

70

W X
1

SIDE B
2 3 4

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No. Mark No. Description Part No.

5. PCB PARTS LIST
NOTES:

· The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. · When ordering resistors, first convert resistance values into code form as shown in the following examples.

Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 561 ........................................................ RD1/4PU 5 6 1 J 560 56 × 101 473 ........................................................ RD1/4PU 4 7 3 J 47k 47 × 103 0.5 R50 ..................................................................................... RN2H R 5 0 K 1 1R0 ..................................................................................... RS1P 1 R 0 K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5621 ...................................................... RN1/4PC 5 6 2 1 F 5.62k 562 × 101 Description Part No.
AWK7528 AWX7376 AWX7395 AWX7396 AWX7410 AWX7422

Mark No.
NSP NSP

Mark No.

Description

Part No.

MAIN ASSY RF TERMINAL ASSY S-VIDEO ASSY DIGITAL-I/O ASSY MAIN CONTROL ASSY VIDEO ASSY

B

A-PINJACK ASSY
C1001­C1018 C1019­C1022 CCCSL101J50 CKCYF103Z50

CAPACITORS

NSP NSP

COMPLEX ASSY (EXCEPT HV TYPE) AWK7529 COMPLEX ASSY (ONLY HV TYPE) AWK7557 REGULATOR ASSY AWX7310 PRIMARY ASSY (EXCEPT HV TYPE) AWX7345 PRIMARY ASSY (ONLY HV TYPE) AWX7454 CONNECTION ASSY AWX7347 A-PINJACK ASSY AWX7412 EXTERNAL IN ASSY AWX7413 TRANS 2-2 ASSY AWX7518 TRANS 1 ASSY AWX7316 FRONT/VAMP ASSY V-AMP ASSY P-SW ASSY H.PHONE/F.VIDEO ASSY ROTARY ENCODER DISPLAY ASSY POWER/CURRENT ASSY C-AMP-P ASSY C-AMP-N ASSY OUTPUT-FL ASSY OUTPUT-FR ASSY OUTPUT-C ASSY OUTPUT-SL ASSY OUTPUT-SR ASSY VL-TERMINAL ASSY DIODE ASSY SP/PS ASSY TRANS 2-1 ASSY DSP ASSY AWK7530 AWX7309 AWX7330 AWX7342 AWX7405 AWX7414 AWK7510 AWX7317 AWX7318 AWX7319 AWX7320 AWX7321 AWX7322 AWX7323 AWX7324 AWX7343 AWX7359 AWX7403 AWX7272

RESISTORS
All Resistors RD1/4PU J

OTHERS
JA1011-JA1013,JA1015 4P PIN JACK 1016 2P PINJACK CN1001 18P SOCKET CN1002 4P SOCKET AKB7048 AKB7120 KP200TA18L KP200TA4L

NSP

C

CONNECTION ASSY
IC1351 IC1301­IC1303 M5220P NJM4558D-D

SEMICONDUCTORS

NSP NSP NSP NSP NSP NSP NSP

COILS AND FILTERS
L1351­L1354 LAU181J

CAPACITORS
C1353, C1354 C1301­C1306 C1351, C1352 C1365, C1366 C1363, C1364 C1357, C1358 C1307­C1312 C1355, C1356 C1313­C1318 C1361, C1362 C1359, C1360 CCCSL181J50 CCCSL331J50 CEAT100M50 CEAT101M25 CEAT2R2M50 CEAT470M25 CEAT4R7M50 CKCYB331K50 CKCYF103Z50 CQMA242J50 CQMBA822J50

A

EXTERNAL IN ASSY
C1101­C1106 C1107­C1112 C1113­C1115 CCCSL101J50 CEAT4R7M50 CKCYF103Z50

CAPACITORS RESISTORS
All Resistors RD1/4PU J

RESISTORS
All Resistors RD1/4PU J

OTHERS
CN1351 CN1352 CN1301 CN1302 CN1353 18P PLUG 4P PLUG 8P PLUG 10P SOCKET 20P SOCKET KM200TA18 KM200TA4 KM200TA8 KP200TA10L KP200TA20L

OTHERS
JA1101­JA1103 2P PIN JACK CN1101 8P SOCKET AKB7095 KP200TA8L

71

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No. Mark No. Description
7P FFC CONNECTOR 13P FFC CONNECTOR 5P FFC CONNECTOR 23P FFC CONNECTOR 26P FFC CONNECTOR 32P FFC CONNECTOR 4P PIN JACK 6P PIN JACK 2P PIN JACK 10P PLUG 20P PLUG 16P SOCKET 15P SOCKET 7P SOCKET 9P SOCKET

Part No.
52044-0745 52044-1345 52045-0545 52045-2345 52045-2645 52045-3245 AKB7015 AKB7089 DKB1045 KM200TA10 KM200TA20 KP200IA16L KP200TA15L KP200TA7L KP200TA9L VEF1040 ASS1018

D

OTHERS

MAIN CONTROL ASSY
IC115 IC103, IC105 IC901 IC104, IC107 IC101 IC108 IC112 IC113, IC114 Q991 Q251, Q252, Q992 Q271, Q272 Q902­Q905 Q901 Q107­Q112 D251, D252, D254, D255 D901­D910, D991 D995 D253, D256 NJM4558LD NJM4558MD PD5506A TC9163AF TC9274N-001 TC9482N UPC4570G2 UPC4570HA 2SC1740S 2SC2412K 2SC2878 DTA124EK DTC143EK HN1C03F 1SS355 1SS355 UDZ11B UDZS5.1B

SEMICONDUCTORS

CN903 CN902 CN906 CN105 CN905 CN904 CN941 113 JA911 CN103 CN101 CN104 CN901 CN920 CN108

909, 912, 913 PCB BINDER X901 CERAMIC RESONATOR (4.19MHz)

E

V-AMP ASSY
IC581 IC7502, IC7522, IC7542, IC7602 IC7622 IC7501, IC7521, IC7541, IC7601 IC7621 Q503, Q523, Q543, Q603, Q623 Q506, Q509, Q526, Q529, Q546 Q549, Q606, Q609, Q626, Q629 Q507, Q508, Q527, Q528 Q547, Q548, Q561, Q607, Q608 Q627, Q628 Q510, Q530, Q550, Q610, Q630 Q7501, Q7521, Q7541, Q7601, Q7621 Q501, Q521, Q541, Q601, Q621 Q504, Q524, Q544, Q604, Q624 D501, D502, D504, D505 D521, D522, D524, D525 D541, D542, D544, D545 D581­D588, D601, D602 D604, D605, D621, D622 D624, D625, D7501, D7502 D7521, D7522, D7541, D7542 D7601, D7602, D7621, D7622 D7503, D7504, D7523, D7524 D7543, D7544, D7603, D7604 D7623, D7624 D503, D523, D543, D603, D623 D506, D526, D546, D606, D626 BU4052BCF NJM4558MD NJM4558MD UPC4570G2 UPC4570G2 2SA1048 2SA970 2SA970 2SC2240 2SC2240 2SC2240 2SC2878 2SC2878 FMS3 FMW4 1SS355 1SS355 1SS355 1SS355 1SS355 1SS355 1SS355 1SS355 HZU2CLL HZU2CLL HZU2CLL UDZS6.8B UDZS8.2B

COILS AND FILTERS
L901 CHIP COIL LCTA2R2J3225

SEMICONDUCTORS

CAPACITORS
C902 C155, C156, C165, C166 C175, C176, C951­C959 C962­C964 C101­C106, C183­C188 C113, C114 C157, C158, C167, C168, C177 C111, C112, C117, C118 C127­C130, C153, C154 C159, C160, C163, C164 C169, C170, C173, C174 C179, C180, C252, C255, C256 C277, C278 C123­C126, C991 C257 C903 C121, C122 C905 C915 C107, C108, C115, C116 C131­C140, C161, C162 C253, C254, C279, C280, C901 C904, C908, C909, C914, C919 C965, C995 C273, C274 C275, C276 C178 C271, C272 C910, C912 C906 C992 ACH7058 CCSQCH101J50 CCSQCH101J50 CCSQCH101J50 CCSQCH221J50 CCSQCH331J50 CCSQCH560J50 CEAT100M50 CEAT100M50 CEAT100M50 CEAT100M50 CEAT100M50 CEAT100M50 CEAT101M16 CEAT1R0M50 CEAT221M10 CEAT221M16 CEAT2R2M50 CEAT331M10 CKSQYB103K50 CKSQYB103K50 CKSQYB103K50 CKSQYB103K50 CKSQYB103K50 CKSQYB104K25 CKSQYB332K50 CKSQYB333K50 CKSQYB472K50 CKSQYB473K50 CKSQYF105Z16 CKSQYF225Z16

CAPACITORS
C511, C512, C531, C532 C551, C552, C611, C612 C631, C632 C509, C529, C549, C609, C629 C504, C524, C544, C604, C624 C7504, C7505, C7524, C7525 C7544, C7545, C7604, C7605 C7624, C7625 C502, C522, C542, C602, C622 C506, C507, C526, C527 CCCSL181K2H CCCSL181K2H CCCSL181K2H CCCSL5R0C2H CCSQCH101J50 CCSQCH220J50 CCSQCH220J50 CCSQCH220J50 CCSQCH221J50 CCSQSL560J50

RESISTORS
R948 R913 R949 Other Resistors RA12T473J RA5T103J RA8T103J RS1/10S

J

72

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No.
CCSQSL560J50 CCSQSL560J50 CEAT100M50 CEAT101M16 CEAT101M16 CEAT470M16 CEAT470M50 CEAT470M50 CEAT4R7M50 CEAT4R7M50 CKSQYB104K25 CKSQYB104K25 CKSQYB104K25 CKSQYB104K25 CKSQYB104K25 CKSQYB222K50 CKSQYB332K50 CKSQYF223Z50 CKSQYF225Z16

Mark No.

Description

Part No.

C546, C547, C606, C607 C626, C627 C7501, C7521, C7541, C7601, C7621 C505, C508, C525, C528, C545 C548, C605, C608, C625, C628 C510, C530, C550, C610, C630 C513, C533, C553, C568, C569 C613, C633 C501, C521, C541, C601, C621 C7506, C7526, C7546, C7606, C7626 C7502, C7503, C7510, C7512 C7522, C7523, C7530, C7532 C7542, C7543, C7550, C7552 C7602, C7603, C7610, C7612 C7622, C7623, C7630, C7632 C561­C565 C503, C523, C543, C603, C623 C570 C581, C582

G

C-AMP-P ASSY
Q2504, Q2524, Q2544, Q2604, Q2624 IRF9540A

SEMICONDUCTORS RESISTORS
R2511, R2531, R2551, R2611, R2631 RD1/4PUF470J

OTHERS
CN2504, CN2524, CN2544 5P PLUG KM250NA5L CN2604, CN2624 5P PLUG KM250NA5L

HA

OUTPUT-SL ASSY
R2612 (0.05/5W) ACN7097

RESISTORS OTHERS
CN2603 5P SOCKET CN2602 7P SOCKET KP250NA5 KP250NA7

RESISTORS
R518, R538, R558, R618, R638 R513, R514, R533, R534 R553, R554, R613, R614 R633, R634 Other Resistors RD1/4MUF473J RS1/10S121J RS1/10S121J RS1/10S121J RS1/10S J

HB

OUTPUT-FL ASSY
R2512 (0.05/5W) ACN7097

RESISTORS OTHERS
CN2503 5P SOCKET CN2502 7P SOCKET KP250NA5 KP250NA7

OTHERS
CN501 CN502 CN504 506 23P FFC CONNECTOR 28P FFC CONNECTOR 3P PLUG PCB BINDER 52045-2345 52045-2845 KM250MA3 VEF1040

F

C-AMP-N ASSY
Q2503, Q2523, Q2543, Q2603, Q2623 Q2001, Q2002 Q2502, Q2522, Q2542, Q2602, Q2622 Q2501, Q2521, Q2541, Q2601, Q2621 D2501­D2504, D2521­D2524 D2541­D2544, D2601­D2604 D2621­D2624 2SA970 2SC1740S 2SC4137 IRF540A 1SS133 1SS133 1SS133

HC

OUTPUT-C ASSY
R2552 (0.05/5W) ACN7097

SEMICONDUCTORS

RESISTORS OTHERS
CN2543 5P SOCKET CN2542 7P SOCKET KP250NA5 KP250NA7

HD

OUTPUT-FR ASSY
R2532 (0.05/5W) ACN7097

CAPACITORS
C2501, C2521, C2541, C2601, C2621 CEANPR22M50 C2001 CEAT101M10

RESISTORS OTHERS
RD1/4PUF391J RD1/4PUF391J RD1/4PUF470J RCP1134 RCP1134 RD1/4PU J CN2523 5P SOCKET CN2522 7P SOCKET KP250NA5 KP250NA7

RESISTORS
R2506, R2510, R2526, R2530, R2546 R2550, R2606, R2610, R2626, R2630 R2501, R2521, R2541, R2601, R2621 VR2501, VR2521, VR2541 (22) VR2601, VR2621 (22) Other Resistors

HE

OUTPUT-SR ASSY
R2632 (0.05/5W) ACN7097

RESISTORS OTHERS
CN2623 5P SOCKET CN2622 8P SOCKET KP250NA5 KP250NA8

OTHERS
CN2001 28P FFC CONNECTOR CN2501, CN2521, CN2541, CN2601 7P PLUG CN2621 8P PLUG 52045-2845 KM250NA7L KM250NA8L

73

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No. Mark No. Description Part No.
ASR7014

I

SWITCHES AND RELAYS

VL-TERMINAL ASSY
C2011, C2012 CEAT1R0M2A

RY3101-RY3105

CAPACITORS OTHERS
KN2011,KN2012 GROUND PLATE ANK-142

CAPACITORS
C3001, C3002 (22000µF/56V) C3118 C3502 C3504 C3501 C3101­C3110 C3503 C3111­C3117 CEAT100M50 CEAT1R0M50 CEAT471M25 CEAT471M35 CFTYA224J50 CKCYF103Z50 CQMA332K2E

J

TRANS 2-1 ASSY
IC4501, IC4502 (2.5A) Q4502 Q4501 Q4504 Q4505 Q4503 D4509, D4510 D4513 D4505­D4508 D4501­D4504, D4511, D4512 AEK7014 2SA1837 2SC4793 DTA143ES DTC124ES DTC143ES MTZJ12B MTZJ16B MTZJ20A S5688G

SEMICONDUCTORS

RESISTORS
R3151­R3155 R3503 R3507 R3504 R3506 R3501 R3502 R3133, R3134 R3106­R3110 R3131, R3132 R3505 Other Resistors RD1/2PM331J RD1/4PU102J RD1/4PU103J RD1/4PU104J RD1/4PU222J RD1/4PU471J RD1/4PU473J RS1LMF471J RS1LMF4R7J RS2LMF331J RS3LMF221J RD1/4PM J

CAPACITORS
C4503 (1µF/100V, NP) C4507, C4508 C4509, C4510 C4501, C4502 ACH1237 CEAT471M63 CECA101M50 CQMA333K2E

OTHERS
3004 3001 CN3003 CN3101 CN3102 J3002 J3001 CN3001 CN3002 KN3001 8P CABLE HOLDER 9P CABLE HOLDER 14P FFC CONNECTOR 8P SPEAKER TERMINAL 6P SPEAKER TERMINAL JUMPER WIRE 8P JUMPER WIRE 9P 4P PLUG 3P PLUG EARTH METAL FITTING 51048-0800 51048-0900 52045-1445 AKE7044 AKE7045 D20PYY0825E D20PYY0915E KM200TA4 KM250MA3 VNF1084

RESISTORS
R4509, R4510 R4501­R4503 Other Resistors RD1/4PMF332J RFA1/4PS220J RD1/4PU J

OTHERS
4001 9P CABLE HOLDER H4501­H4504 FUSE CLIP 4501, 4502 HEAT SINK 4503, 4504 SCREW 51048-0900 AKR1004 ANH-309 BPZ30P080FZK

K L

DIODE ASSY
D3001, D3002 D5SBA20(B)

M

REGULATOR ASSY
IC5009, IC5010 (200mA) IC5004, IC5008 IC5003 IC5001 IC5005, IC5007 IC5006 IC5002 D5010 D5009 D5012­D5014 D5011 D5001­D5008, D5015­D5017 AEK7023 NJM78M05FA NJM78M12FA NJM78M15FA NJM78M56FA NJM79M05FA NJM79M15FA 1SS133 D3SBA20(B) MTZJ10C MTZJ5.1B S5688G

SEMICONDUCTORS

SEMICONDUCTORS

SP/PS ASSY
IC3001 (750mA) Q3504 Q3503 Q3005, Q3156­Q3159, Q3501 Q3502 Q3151­Q3155 D3051­D3060 D3506, D3508 D3505 D3507 D3501, D3502 AEK7007 2SC2235 2SC4793 DTA124ES DTC124ES DTC143ES 1SS133 MTZJ12C MTZJ27D MTZJ5.1B S5688G

SEMICONDUCTORS

CAPACITORS
C5015, C5017, C5019, C5021, C5023 C5009, C5011, C5013, C5025 C5024 C5026 C5027, C5028 CEAT101M10 CEAT101M25 CEAT101M50 CEAT221M35 CEAT221M50

COILS AND FILTERS
L3101­L3105 AF CHOKE COIL ATH1053

74

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No.
CEAT222M25 CEAT222M35 CEAT332M25 CEAT472M16 CKCYF103Z50 CKCYF103Z50

Mark No.

Description

Part No.
CCSQCH240J50 CEAT100M50 CEAT101M10 CEAT101M10 CEAT101M10 CEAT101M16 CEAT1R0M50 CEAT330M16 CKSQYB103K50 CKSQYB122K50 CKSQYB473K50 CKSQYB473K50

C5001, C5003, C5006 C5002, C5004 C5005 C5007 C5008, C5010, C5012, C5014, C5016 C5018, C5020, C5022

C761, C762 C754 C701­C704, C710­C712 C734, C735, C755, C764, C765 C781­C784 C713, C768, C769 C757 C752 C795, C797 C756 C708, C709, C714, C766, C767 C770, C771, C785, C786, C793

RESISTORS
R5001­R5003 RD1/2PM620J

OTHERS
5009 CN5002 CN5001 J5000 CN5004 4P CABLE HOLDER 14P FFC CONNECTOR 8P JUMPER CONNECTOR BOARD IN WIRE 16P PLUG 51048-0400 52045-1445 52147-0810 DB022ND0 KM200IA16 KM200TA15 KM200TA17 KM200TA7 KM200TA9 VNF1084

RESISTORS
R715 Other Resistors RD1/2VM201J RS1/10S J

CN5005 15P PLUG CN5007 17P PLUG CN5008 7P PLUG CN5003,CN5006 9P PLUG KN5001,KN5002 EARTH METAL FITTING

OTHERS
CN702 21P FFC CONNECTOR CN701 26P FFC CONNECTOR 702, 705, 706 2P RCA PIN JACK 707 1P RCA PIN JACK 704 PCB BINDER X751 CRYSTAL RESONATOR (14.31818MHz) 52045-2145 52045-2645 AKB7017 AKB7020 VEF1040 ASS1056

N O

TRANS 1 ASSY
TRANS 1 Assy has no service parts.

TRANS 2-2 ASSY
IC5501 (4A) AEK7018

Q

S-VIDEO ASSY
IC831 IC852 IC851 IC801, IC802 Q852, Q853 Q851 Q833, Q834 Q831 D801, D802, D804, D805, D851 BU4051BCF BU4053BCF LA7213 NJM2296M 2SA933S DTC124ES IMH11 IMZ1A 1SS355

SEMICONDUCTORS CAPACITORS
C5502 C5501 (1µF/100V) ACH1237 CEANPR47M50

SEMICONDUCTORS

RESISTORS
R5501 Other Resistors RFA1/4PS100J RD1/4PU J

CAPACITORS OTHERS
5501 4P CABLE HOLDER 51048-0400 C857 C854 C815­C818, C861, C862 C898 C809, C858 C801, C803, C805, C807 C819­C822, C852, C853, C863 C881, C882 C866, C868 C851 C831­C836, C855, C856, C891 C893, C894, C899 C810­C814, C859, C860 C864, C865 C802, C804, C806, C808 C823­C826, C867, C869 CCSQCH100D50 CCSQCH151J50 CCSQCH181J50 CCSQCH221J50 CCSQCH330J50 CEAT101M10 CEAT101M10 CEAT101M10 CEAT101M16 CEAT3R3M50 CKSQYB103K50 CKSQYB103K50 CKSQYB104K25 CKSQYB104K25 CKSQYB473K50 CKSQYB473K50

P

VIDEO ASSY
IC751 IC752 IC701 Q701 Q751­Q754 Q755 D701, D702, D751­D753 BU4053BCF LC74782M-9011 NJM2296M 2SA933S 2SC1740S DTC124EK 1SS355

SEMICONDUCTORS

COILS AND FILTERS
L752, L753 CHIP COIL L751 CHIP COIL LCTA100J3225 LCTA330J3225

RESISTORS
R864 R859 Other Resistors RD1/2VM201J RD1/4VM471J RS1/10S J

CAPACITORS
C753 C763, C772 C715, C759 C760 C705­C707 CCSQCH100D50 CCSQCH101J50 CCSQCH150J50 CCSQCH180J50 CCSQCH181J50

75

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No.
52045-2145 AKP7020 AKP7043 RKN1004 VEF1040

Mark No.
C7051 C7401 C7009 C7408

Description

Part No.
CKSQYB103K50 CKSQYB472K50 CKSQYB473K50 CKSQYB561K50

OTHERS
CN804 21P FFC CONNECTOR CN802, CN803 4P MINI DIN SOCKET CN801 4P MINI DIN SOCKET JA881, JA882 REMOTE CONTROL JACK 801 PCB BINDER

RESISTORS
R7044 Other Resistors RA15T104J RS1/10S J

R

OTHERS

H. PHONE/F. VIDEO ASSY
Q7201, Q7202 2SC1740S

SEMICONDUCTORS CAPACITORS
C7201, C7202, C7215, C7216 C7203, C7204 C7208, C7209 C7207 C7210, C7212 C7211 C7213, C7214 C7217, C7218 CCSQCH271J50 CCSQCH330J50 CEAT101M10 CEAT470M35 CKSQYB103K50 CKSQYB104K25 CKSQYB105K10 CKSQYB392K50

7001 3P CABLE HOLDER 7002, 7003 8P CABLE HOLDER CN7005 5P FFC CONNECTOR CN7002 6P FFC CONNECTOR CN7004 12P FFC CONNECTOR CN7001 32P FFC CONNECTOR V7001 FL TUBE X7401 CRYSTAL RESONATOR (4.332MHz) X7001 CERAMIC RESONATOR (7.2MHz) 7004 REMOTE RECEIVER UNIT

51052-0300 51052-0800 52045-0545 52045-0645 52045-1245 52045-3245 AAV7063 ASS7004 ASS7018 GP1U28X

RESISTORS
All Resistors RS1/10S J

T
12P FFC CONNECTOR FRONT PIN JACK 4P HEADPHONE JACK EARTH METAL FITTING 52045-1245 AKX7007 RKB1014 VNF1084

ROTARY ENCODER ASSY
S7101 S7102 ASX7004 ASX7031

SWITCHES AND RELAYS

OTHERS
CN7201 CN7202 JA7201 KN7201

CAPACITORS
C7101­C7104 CKSQYB103K50

RESISTORS

S

DISPLAY ASSY
IC7401 IC7001 Q7051 Q7401 Q7403 Q7005 Q7001, Q7002, Q7052 Q7402 D7007­D7010, D7051­D7053 D7001, D7002 BU1923 PD5507B 2SA1037K 2SA1993 2SC1740S 2SC2412K DTC124EK DTC143ES 1SS355 SLR-343VR(MNP)

All Resistors

RS1/10S

J

SEMICONDUCTORS

OTHERS
CN7101 6P FFC CONNECTOR 52044-0645

U

P-SW ASSY
S6801 ASG1035

SWITCHES AND RELAYS CAPACITORS
C6801, C6802 CGCYX103K25

COILS AND FILTERS
L7011, L7012 L7001, L7401 LCTA330J3225 LFA2R2J

OTHERS
CN6801 52151-0310

SWITCHES AND RELAYS
S7001­S7030 VSG1009

V

PRIMARY ASSY

(1) CONTRAST TABLE CAPACITORS
C7010 (0.047µF/5.5V) C7007 C7406, C7407 C7008, C7013 C7701, C7702 C7405 C7052, C7410 C7409 C7402 C7001­C7005, C7091, C7403, C7404 ACH7132 CCSQCH101J50 CCSQCH270J50 CEAL101M6R3 CEAT100M50 CEAT101M10 CEAT101M6R3 CEAT1R0M50 CEAT2R2M50 CKSQYB102K50

AWX7345 and AWX7454 are constructed the same except for the following :
Mark Symbol and Description Y6003 BOARD IN Y6004 BOARD IN Y6005 BOARD IN Part No. Remarks AWX7345 AWX7454 ADX7321 Not used ADX7320 Not used ADX7319 Not used

76

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No. Mark No. Description Part No.

(2) PARTS LIST FOR AWX7345 SEMICONDUCTORS
IC6001 Q6001 D6005­D6007 D6008 D6001­D6004 NJM78M56FA DTC143ES 1SS133 MTZJ5.1A S5688G

X

RF TERMINAL ASSY
C1251 C1250 CKSQYB473K50 CKSQYF473Z50

CAPACITORS

RESISTORS
All Resistors RS1/10S J

COILS AND FILTERS
L6001 LINE FILTER L6003, L6004 ATF1006 ATX1012

OTHERS
CN1250 3P PLUG JA1250 1P PIN JACK (AU, BLK) 1250 SCREW TERMINAL KM250MA3 VKB1074 VNE1948

TRANSFORMERS
T6001 STANDBY TRANS. ATT7040

SWITCHES AND RELAYS
RY6001 POWER RELAY ASR1044

Y

DSP ASSY
IC9203 IC9101 IC9201, IC9202 IC9041 IC9401, IC9411, IC9421 IC9501 IC9374 IC9071 IC9391 IC9091 IC9372 IC9371 IC9151 IC9102 IC9103 IC9311 IC9204, IC9361 IC9601 IC9602­IC9604, IC9701­IC9705 IC9321 Q9007 Q9003, Q9032 Q9001, Q9002, Q9004­Q9006, Q9031 Q9201, Q9202, Q9601­Q9606 Q9102, Q9104, Q9203, Q9607 CS5360-KS CS8414-CS NJM2100M NJM4558MD PCM1716E PD5503A PDK042A PM4007A PQ20WZ51 SRM2B256SLMX70 TC55V1664BFT-12 TC55V8128BJ-12 TC74ACT151F TC74VHC157FT TC7SH08FU TC7WT241FU TC7WU04FU TC9164AF UPC4570G2 XCD56362PV100 2PB709A 2PD601A 2SC3082K 2SC3326 DTA124EK DTA124EK DTC124EK 1SS181 1SS226 1SS355 KV1851

SEMICONDUCTORS CAPACITORS
C6002, C6003 (10000pF/AC250V) C6005 C6006 C6004 ACG7020 CEAT102M16 CEAT470M25 CKCYF103Z50

RESISTORS
R6003 Other Resistors RD1/2PM270J RD1/4PU J

OTHERS
6001 3P CABLE HOLDER Y6005 AWG18 BOARD IN Y6004 AWG18 BOARD IN Y6003 AWG18 BOARD IN H6001, H6002 FUSE CLIP J6000 3P JUMPER WIRE CN6003 4P SOCKET CN6002 AC CORD SOCKET 6005, 6006 PCB BINDER 6002, 6003 SCREW TERMINAL 51048-0300 ADX7319 ADX7320 ADX7321 AKR1004 D20PYY0335E KP200TA4L RKP1751 VEF1040 VNE1948

W

DIGITAL-I/O ASSY
IC1201 TC74HCU04AF

SEMICONDUCTORS COILS AND FILTERS
F1203­F1206 CHIP BEAD DTF1064

Q9609, Q9610 Q9101, Q9103, Q9204, Q9205, Q9608 D9601, D9602 D9201­D9204 D9002 D9001

CAPACITORS
C1204, C1211 C1206, C1213 C1203, C1210 C1207, C1212, C1215, C1216 C1236, C1237 CCSQCH470J50 CEAT470M10 CKSQYB103K50 CKSQYF104Z25 CKSQYF104Z25

COILS AND FILTERS
F9001 BPF L9003 INDUCTOR L9071, L9104, L9321, L9323, L9391 L9399, L9402­L9408, L9501, L9801 L9807, L9809 CHIP FERRITE BEAD F9072 CHIP BEAD L9091, L9092, L9101, L9102 L9105­L9108, L9151, L9152 L9203­L9206, L9311, L9361 L9371, L9372, L9374, L9396­L9398 CHIP SOLID INDUCTOR ATF7001 ATH7001 ATL7002 ATL7002 ATL7002 DTF1064 QTL1013 QTL1013 QTL1013 QTL1013

RESISTORS
All Resistors RS1/10S J

OTHERS
CN1201 11P FFC CONNECTOR JA1204 2P PIN JACK JA1201,JA1202 OPTICAL RECEIVE MOD. JA1203 OPTICAL LINK MOD. 52045-1145 AKB7095 GP1F37R1 GP1F38T2

77

VSX-908RDS, VSX-908RDS-G
Mark No. Description Part No.
CCSQCH101J50 CCSQCH101J50 CCSQCH221J50 CCSQCH221J50 CCSQCH271J50 CCSQCH330J50 CCSRCH101J50 CCSRCH101J50 CCSRCH101J50 CCSRCH101J50 CCSRCH180J50 CCSRCH220J50 CCSRCH221J50 CCSRCH221J50 CCSRCH270J50 CCSRCH271J50 CCSRCH271J50 CCSRCH271J50 CCSRCH331J50 CCSRCH470J50 CCSRCH471J50 CCSRCH471J50 CCSRCH561J25 CCSRCH750J50 CCSRCH820J50 CCSRCH821J25 CEJA100M25 CEJA101M10 CEJA221M10 CEJA221M6R3 CEJA330M10 CEJA330M10 CEJA330M10 CEJA470M16 CEJA470M16 CEJA470M25 CEJA470M6R3 CEJA470M6R3 CEJA4R7M50 CEJANP4R7M25 CEJAR47M50 CEWAR330M10 CEWAR330M10 CEWAR4R7M50 CEWAR4R7M50 CKSQYB103K50 CKSQYB103K50 CKSQYB103K50 CKSQYB474K16 CKSQYF104Z25 CKSRYB102K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB104K16 CKSRYB122K50 CKSRYB182K50

Mark No.

Description

Part No.
CKSRYB222K50 CKSRYB272K50 CKSRYB333K16 CKSRYB472K50 CKSRYB473K16 CKSRYB473K16 CKSRYB473K16 CKSRYB562K50 CKSRYB682K50 CKSRYB683K16 CKSRYB821K50 CKSRYF104Z16 CKSRYF104Z16 CKSRYF104Z16 CKSRYF104Z16 CKSRYF104Z16 CKSRYF104Z16 CKSRYF104Z16 CKSRYF104Z16 CKSRYF105Z10

CAPACITORS
C9329, C9349, C9355, C9357, C9358 C9378, C9386 C9232, C9453­C9455, C9742, C9809 C9815, C9816 C9112, C9512 C9224, C9225 C9033, C9325, C9326, C9335, C9337 C9339, C9341, C9345, C9347, C9374 C9387, C9609, C9610, C9721, C9722 C9735 C9364 C9363 C9095, C9231, C9233, C9621, C9622 C9743, C9744, C9761­C9766 C9057, C9201, C9202 C9076, C9104, C9106, C9154, C9214 C9220, C9362, C9402, C9412, C9422 C9629 C9719, C9720, C9733 C9741 C9451, C9452, C9509, C9617, C9618 C9639 C9211, C9717, C9718, C9731, C9808 C9007 C9707, C9708 C9611, C9612 C9312, C9643, C9644, C9756 C9071, C9393, C9501, C9740, C9801 C9442 C9343, C9360 C9216, C9219, C9222, C9403, C9405 C9408, C9413, C9415, C9418, C9423 C9425, C9428 C9091, C9102, C9108, C9114, C9151 C9372, C9376, C9383 C9016, C9803, C9805 C9406, C9409, C9416, C9419, C9426 C9429 C9206, C9207, C9391 C9053 C9110 C9713, C9714, C9727, C9728, C9739 C9751­C9755 C9203, C9204, C9603, C9604 C9615, C9616, C9627, C9628 C9113, C9322, C9323, C9332, C9334 C9342, C9344, C9350­C9354, C9377 C9385, C9636 C9330 C9073, C9080, C9205, C9208, C9511 C9212, C9554 C9014, C9054, C9056, C9070, C9103 C9105, C9107, C9119, C9153, C9158 C9221, C9313, C9324, C9327, C9333 C9336, C9338, C9340, C9346, C9348 C9361, C9373, C9388, C9401, C9411 C9421, C9637 C9626, C9730 C9605, C9606, C9633 C9703, C9704, C9715, C9716, C9729

C9601, C9602, C9613, C9614, C9625 C9701, C9702 C9732 C9645 C9215, C9218, C9404, C9407, C9410 C9414, C9417, C9420, C9424, C9427 C9430 C9359 C9111 C9020 C9736 C9002­C9006, C9008­C9013, C9015 C9017, C9018, C9031, C9032, C9043 C9051, C9052, C9055, C9058 C9074, C9075, C9077­C9079, C9081 C9092, C9209, C9210, C9607, C9608 C9619, C9620, C9631, C9632 C9709­C9712, C9723­C9726 C9737, C9738 C9041, C9042

RESISTORS
R9158, R9351, R9376­R9379, R9394 R9401, R9411, R9421, R9452­R9454 R9104 R9114, R9239, R9504, R9505 R9214 R9393 R9074, R9128 R9120 R9061 R9360 R9391 Other Resistors RS1/10S0R0J RS1/10S0R0J RS1/10S101J RS1/10S102J RS1/10S103J RS1/10S2001F RS1/10S221J RS1/10S331J RS1/10S471J RS1/10S472J RS1/10S5100F RS1/16S J

OTHERS
CN9551 7P FFC CONNECTOR CN9803 11P FFC CONNECTOR PC BOARD DSP CN9804 3P PLUG CN9801 17P SOCKET CN9802 9P SOCKET X9501 CERAMIC RESONATOR (7.70MHz) X9001 CRYSTAL RESONATOR (18.432MHz) X9361 X9201 CRYSTAL RESONATOR (20MHz) CRYSTAL RESONATOR (12.288MHz) 52045-0745 52045-1145 ANP7311 KM250MA3 KP200TA17L KP200TA9L ASS1055 ASS7009 ASS7023 DSS1030

78

VSX-908RDS, VSX-908RDS-G

6. ADJUSTMENT
6.1 IDLE CURRENT ADJUSTMENT
· CAUTION : Heatsink's DC level is equal to +B or -B. Don't touch them or you will be electricary shocked. 1. Decrease the level of the Adjustment Variable resistors (VR) for the channel to be adjusted. ( Turn counterclockwise.) 2. Set the power switch to ON. +4mV 3. Connect the DC voltmeter as shown below and adjust VRs in step No. order so that voltages become 16mV ­0mV . 4. Ages for seven minutes. 5. Readjust in step No. order so that the voltages become 11.5mV ± 1mV (10.5 to 12.5mV). Adjustment is completed.
Step No. 1 2 3 4 5 Adjustment VR VR2601 VR2501 VR2541 VR2521 VR2621 Adjustment ch SL ch FL ch C ch FR ch SR ch

Heat Sink ­B

Heat Sink +B

OUTPUT-SR ASSY VR2621 OUTPUT-FR ASSY VR2521 VL-TERMINAL ASSY OUTPUT-C ASSY VR2541 OUTPUT-FL ASSY VR2501 OUTPUT-SL ASSY VR2601

5 4

3 2 1
DC Voltmeter

Front side

79

VSX-908RDS, VSX-908RDS-G

7. GENERAL INFORMATION
7.1 DISASSEMBLY
C-AMP-N and C-AMP-P ASSYS

1

×2

1

4
×2

×2

1

×3

1 2 1
×2

×2

5

Remove six PCBs.

OUTPUT -SR Assy OUTPUT -FR Assy

1

×2

3

×4

OUTPUT -SL Assy

OUTPUT -FL Assy

OUTPUT -C Assy

VL-TERMINAL Assy

7
C-AMP-N Assy C-AMP-P Assy

6

CN2001

Heat Sink ­B

3

×4

Heat Sink +B

· CAUTION : Heatsink's DC level is equal to +B or - B.
Don't touch them or you will be electricary shocked.

Replace the FETs on the C-AMP-N and C-AMP-P assemblies.

80

VSX-908RDS, VSX-908RDS-G

DIODE, REGULATOR and Other ASSYS

SP/PS Assy S-VIDEO Assy PRIMARY Assy

VIDEO Assy A-PINJACK Assy EXTERNAL IN ASSY

TRANS2-1 Assy DIGITAL I/O Assy TRANS1 Assy CONNECTION Assy TUNER MODULE TRANS2-2 Assy MAIN CONTROL Assy

DSP Assy

H.PHONE/F.VIDEO Assy

REGULATOR Assy

V-AMP Assy DISPLAY Assy

ROTARY ENCODER Assy

9

×3

DIODE Assy Replace the diode.

8

×2

9 9

×3

×1

REGULATOR Assy Replace the Regulator IC.

81

VSX-908RDS, VSX-908RDS-G

7.2 PARTS
7.2.1 IC
· The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.

·List of IC
PD5507B, PD5506A

PD5507B (DISPLAY ASSY : IC7001)
· Display Control IC

· Pin Assignment (Top View)
5V GND Vee P36 P35 P34 P33 P32 P31 5V P30 P29 P28 P27 P26 P25 P24 P23 P22 P21

100

99

98

97

96

95

94 PA4 93 PA5 92 VCC 91 PA6 90 PA7 89

P80 88 P81 87 P82 86 P83 85 P84 84 P85 83

XANTECH KEY2 KEY3 KEY4 KEY5 KEY6 VOL-DET LED CK LED CE LED A LED R T_CK T_DI T_DO T_CE TUNED STEREO TMUTE NC DISP_CK DISP_DO DISP_DI DISP_RDY STBY LED MRS LED RDS_FM+ RDS_DAT PULLUP RDS_CLK

31 P43 INT3 32 P42 INT2 33 P41 34 P40 INT0 35 XRESET 36 PB1 37 PB0

38 XIN 39 XOUT

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

VREF AVSS Vee PA0 PA1 PA2 PA3

P86 82 P87 81

P77 P76 P75 P74 P73 P72 P71 P70 PB3 PB2 P57 RDY3 P56 SCK3

P55 SO3 P54 SI3 P53 RDY2 P52 SCK2 P51 SO2 P50 SI2 P67 CS1/RDY1 P66 SCK11 P65 SO1 P64 SI1 P63 P62 P61 P60 P47 P46 P45 INT1 P44 INT4

40 VSS 41 P27 42 P26

P90 80 P91 79 P92 78 P93 77 P94 76 P95 75 P96 74 P97 73 P30 72 P31 71 P32 70 P33 69 P34 68 P35 67 P36 66 P37 65 P00 64 P01 63 P02 62 P03 61 P04 60 P05 59 P06 58 P07 57 P10 56 P11 55 P12 54 P13 53 P14 52 P15 51
43 P25 44 P24 45 P23 46 P22 47 P21 48 P20 49 P17 50 P16

P20 P19 P18 P17 P16 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 G16 G15 G14 G13 G12 G11 G10 G9 G8 G7

MRIN RMCIN HP-SW CHECKER RESET(from system) VOL UP VOL DN

FUNC R FUNC L G1

GND VOL+ VVOL ­

XIN XOUT

G2 G3 G4

G5

82

G6

VSX-908RDS, VSX-908RDS-G

· Pin Function
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 Pin Name XANTECH KEY 2 KEY 3 KEY 4 KEY 5 KEY 6 VOL-DET LED CKL LED OE LED A LED R T-CK T-DI T-DO T-CE TUNED STEREO T-MUTE NC DISP CK DISP DO DISP DI DISP RDY NC STBY LED I/O O I I I I I I O O O O O O I O I I O O I O I O - O O - O I I I I I I I O O - - - I I I I O O O O O O Function XANTECH ON/OFF Key scan input 2 Key scan input 3 Key scan input 4 Key scan input 5 Key scan input 6 Detection of volume position Clock for IC7071 M66311 Output enable for IC7071 M66311 Data for IC7071 M66311 Reset for IC7071 M66311 Clock for tuner module Data for tuner module Data from tuner module Chip enable for tuner module Tuned data from tuner module Stereo tuned data from tuner module Tuner mute ON/OFF Open Clock from IC901 MAIN U-COM Data for IC901 MAIN U-COM Data from IC901 MAIN U-COM Data request for IC901 MAIN U-COM Open Standby LED Sub room LED (MR&S model), EON LED (RDS model) VDD for IC7401 BU1923 (RDS model only) Data for IC7401 BU1923 (RDS model only) (pull-up) Clock for IC7401 BU1923 (RDS model only) Sub room remote control (MR&S, MR model only) Remote control Headphone connect detect For unit check test mode detection Reset Control for VOIL UP Control for VOL DOWN Connect a 7.2MHz oscillator GND Rotary encoder signal + Rotary encoder signal Rotary encoder signal R Rotary encoder signal L Grid output 1 Grid output 2 Grid output 3 Grid output 4 Grid output 5 Grid output 6 No. 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 Pin Name G7 G8 G9 G10 G11 G12 G13 G14 G15 G16 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 I/O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O - O O O O O O - - - Function Grid output 7 Grid output 8 Grid output 9 Grid output 10 Grid output 11 Grid output 12 Grid output 13 Grid output 14 Grid output 15 Grid output 16 Segment output 1 Segment output 2 Segment output 3 Segment output 4 Segment output 5 Segment output 6 Segment output 7 Segment output 8 Segment output 9 Segment output 10 Segment output 11 Segment output 12 Segment output 13 Segment output 14 Segment output 15 Segment output 16 Segment output 17 Segment output 18 Segment output 19 Segment output 20 Segment output 21 Segment output 22 Segment output 23 Segment output 24 Segment output 25 Segment output 26 Segment output 27 Segment output 28 Segment output 29 Segment output 30 Power supply +5V Segment output 31 Segment output 32 Segment output 33 Segment output 34 Segment output 35 Segment output 36 Power supply 5V GND Reference voltage 5V

26 MRS LED 27 28 29 30 RDS FM+ RDS DAT NC RDS CLK

76 S16 77 78 79 80 S17 S18 S19 S20

31 MR IN 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 RMC IN HP-SW NC RESET VOL/UP VOL/DN XIN XOUT VSS VOL+ VOLFUNC/R FUNC/L G1 G2 G3 G4 G5 G6

81 S21 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 S22 S23 S24 S25 S26 S27 S28 S29 S30 VCC S31 S32 S33 S34 S35 S36 VEE AVSS VREF

83

VSX-908RDS, VSX-908RDS-G

PD5506A (MAIN CONTROL ASSY : IC901)
· Main Control IC

· Pin Assignment (Top View)

DISP DO DISP(OSD)DI OSD CK

80

79

78 77

76

P65/SSTB/AN11 75 AREF 74 AVSS 73 P50/SIN1 72 P51/SOUT1 71

P52/SCLK11 70 P53/SCLK12 69 P54/RXD 68

P76/AN6 P77/AN7 P62/SRDY1/ANB P63/AN9 P64/INT4/SBUSY/AN1

TEMP IN A MUTE HCS1 HRST HMUTE HCS2 NC NC AMPOL XRESET NC NC GND XIN XOUT VDD NC GAIN_ST EVOL CK GAIN_CK GAIN_DT EVOL ST WAKE UP EVOL DT

1 P75/AN5 2 P74/AN4 3 P73/AN3 4 P72/AN2 5 P71/AN1 6 P70/AN0 7 P61/CNTR0/CNTR2 8 P60/CNTR1 9 P47/INT2 10 XRESET 11 P91/XCOUT 12 P90/XCIN 13 VSS 14 XIN 15 XOUT 16 VCC 17 P46/T2OUT 18 P45/T1OUT 19 P44/PWM1 20 P43/BUZ01 21 P42/INT3 22 P41/INT1 23 P40/INT0 24 P87/PWM0 /FLD39

P55/TXD 67 P56/SCLK21 66 P57/SRDY2 65 /SCLK22

P20/BUZ02 /F