Pioneer VSX-908-RDSG Service manual

STANDBY/ON

—OFF _ON

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

DSP

STANDBY

MODE

/DTS

THX CINEMA ADVANCED STANDARD

STEREO

MPEG

DIMMER

EON MODE

FL

DOWN UP

INPUT SELECTOR

MASTER VOLUME

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

VSX-908RDS

VSX-908RDS-G

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Type

HY/EW – AC220-230V AC240V, HY/GR – AC220-230V AC240V, HV – AC230V AC240V, HY – AC220-230V AC240V,

VSX-908RDS VSX-908RDS-G following method.

Model

Power Requirement

The voltage can be converted by the

∗ ∗ ∗ ∗

ORDER NO.

RRV2166

: Alter the wiring of the Power -supply block at the primary winding of Power -transformer referring to the "Line V oltage Selection" described

∗

in Service Manual.

CONTENTS

1. SAFETY INFORMATION

2. EXPLODED VIEWS AND PARTS LIST

......................................

...............

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

4. PCB CONNECTION DIAGRAM

5. PCB PARTS LIST

6. ADJUSTMENT

...............................................

....................................................

.........................

...

10 48 71 79

2 3

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.

NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation.

REMARQUE (POUR MODÈLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces de remplacement doivent avoir la même désignation.

Health & Safety Code Section 25249.6 – Proposition 65

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

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

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.

Reading should not be above

0.5mA

Earth ground

Device under test

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

Test all exposed metal surfaces

Leakage current tester

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.

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 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.

on the schematics and on the parts list

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.

•

2.1 PACKING

5

13

Refer to "7.3 REMOTE CONTROL UNIT".

(1) PACKING PARTS LIST

Mark No. Description Part No.

4

8

9

11

1

2

3 (Except HY/GR Type)

12

10

7 (2/2)

14 (Except HV Type) 15, 16, 17, 18, 19, 20 (HY/EW and HY Types Only)

13

7 (1/2)

Mark No. Description Part No.

1 AM Loop Antenna ATB7009 2 FM Wire Antenna ADH7010 3 Operating Instructions(English) See Contrast table (2) 4 Remote Control Unit See Contrast table (2)

NSP 5 Alkaline Dry Cell Battery VEM1012

(LR6, AA)

6 • • • • • 7 Front Pad AHA7253 8 Rear Pad AHA7254 9 Packing Case See Contrast table (2)

10 Packing Sheet RHC1023

NSP 12 Warranty Card ARY7022

11 Polyethylene Bag Z21-038

(0.03×230×340)

13 Spacer AHB7032 14 Operating Instructions See Contrast table (2) 15 Operating Instructions See Contrast table (2)

16 Operating Instructions See Contrast table (2) 17 Operating Instructions See Contrast table (2) 18 Operating Instructions See Contrast table (2) 19 Operating Instructions See Contrast table (2) 20 Operating Instructions See Contrast table (2)

(2) CONTRAST TABLE

VSX-908RDS/HY/EW, HY/GR, HV and VSX-908RDS-G/HY are constructed the same except for the following :

Part No.

Mark No. Symbol and Description VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks

/HY/EW /HY/GR /HV -G/HY

3 Operating Instructions (English) ARB7187 Not used ARB7187 ARB7187 4 Remote Control Unit (CU-VSX162) AXD7214 AXD7214 AXD7214 Not used 4 Remote Control Unit (CU-VSX165) Not used Not used Not used AXD7236 9 Packing Case AHD7814 AHD7814 AHD7814 AHD7815

14 Operating Instructions (German) ARC7244 ARC7244 Not used ARC7244 15 Operating Instructions (French) ARC7245 Not used Not used ARC7245

16 Operating Instructions (Italian) ARC7246 Not used Not used ARC7246 17 Operating Instructions (Dutch) ARC7270 Not used Not used ARC7270 18 Operating Instructions (Swedish) ARC7280 Not used Not used ARC7280 19 Operating Instructions (Spanish) ARC7281 Not used Not used ARC7281

20 Operating Instructions (Portuguese) ARC7282 Not used Not used ARC7282

3

VSX-908RDS, VSX-908RDS-G

2.2 EXTERIOR

73

10

11

71

Refer to "2.4 FRONT PANEL SECTION".

58

72

66

48

67 *

1

66 *

2

(Except HV Type)

73

24

N

36

49

19

67 * 66 *

79

27

83

6

25

21

43

67 *

1

66 *

67 * 66 *

2

1 2

59

50

F

49

40

49

1 2

71

M

67 * 77 *

1 2

67 *

1

77 *

2

Note *1 : VSX-908RDS *2 : VSX-908RDS-G

67 *

1

77 *

2

20

80

(HV Type Only)

67 *

1

66 *

2

81

26

(Except HV Type)

26

(Except HV Type)

78

67 * 66 *

1 2

(HV Type Only)

20

82

54

73

O

23

15

37

1 2

M

L

62

70

O

69

13

33

J

I

51

16

69

12

G

32

8

J

65

30

H

31

67 *

1

75

2

66 *

68

67 *1 66 *2

63

K

28

P

17

22

53

67

7

Refer to "2.3 HEAT SINK SECTION".

34

67

E

67 * 66 *

45

52

67 *

52

F

77 *

1 2

52

64

51

70

39

67

44

29

A

E

N

51

42

67 *

1

66 *

1

50

2

67 * 77 *

1 2

2

44

42

67 *

1

77 *

2

67 *

1

77 *

38

67 * 66 *

G

B

L

70

55

2

1 2

H

4

3

84

70

35

I

2

P

K

5

84

9

18

67 *

1

77 *2

4

VSX-908RDS, VSX-908RDS-G

(1) EXTERIOR PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.

NSP 2 EXTERNAL IN Assy AWX7413

1 • • • • •

NSP 3 A-PINJACK Assy AWX7412

4 CONNECTION Assy AWX7347 5 MAIN CONTROL Assy AWX7410

6 TRANS 2-1 ASSY AWX7403 7 DIODE Assy AWX7343 8 SP/PS Assy AWX7359 9 REGULATOR Assy AWX7310

10 TRANS 1 Assy AWX7316 11 TRANS 2-2 Assy AWX7518

12 VIDEO Assy AWX7422 13 S-VIDEO Assy AWX7395 14 • • • • • 15 PRIMARY Assy See Contrast table (2)

16 DIGITAL-I/O Assy AWX7396

NSP 17 RF TERMINAL Assy AWX7376

18 DSP Assy AWX7272 19 V-AMP Assy AWX7309

20 AC Power Cord See Contrast table (2) 21 Power Transformer (T1) ATS7253

22 FM/AM TUNER Unit AXX7048 23 Fuse (FU1 : T4A) AEK-514 24 Fuse (FU4 : T2A) AEK-511 25 Fuse (FU5 : T2A) AEK-511

26 AC Cord Spacer See Contrast table (2)

27 Bonnet Case See Contrast table (2)

28 2P Shield with Housing (J24) ADX7250

29 Lead Card 07P (J13) ADD7161

30 Lead Card 11P AD (J22) ADD7170

41 • • • • • 42 Cushion 55 PNM1316

NSP 43 Frame 26 ANG7238

44 Insulator PNW2766 45 Locking Card Spacer DEC1908

46 • • • • • 47 • • • • •

NSP 48 Panel Stay 26 AND7031

49 PC Support VEC1549

NSP 50 PCB Holder AEC7057 NSP 51 PCB Holder PNW2100

NSP 52 PCB Mould AMR1525

53 PCB Spacer AEC1372 54 Rear Panel See Contrast table (2) 55 Shield Case ANK7054

56 • • • • • 57 • • • • • 58 Side Escutheon L See Contrast table (2) 59 Side Escutheon R See Contrast table (2) 60 • • • • •

61 • • • • • 62 Stud Cover AEC7105

63 Terminal Screw AKE-031 NSP 64 Under Base 26 ANA7089 NSP 65 Binder (BK-1) ZCA-BK1

66 Screw BBT30P080FCC

67 Screw BBZ30P080FZK

68 Screw ABA1193

69 Screw IBZ30P080FCC

70 Screw BBZ30P180FMC

31 Lead Card 13P AD (J16) ADD7169 32 Lead Card 14P (J17) ADD7165 33 Lead Card 21P (J18) ADD7164 34 Lead Card 23P BD SLD (J12) ADD7160 35 Lead Card 26P (J15) ADD7163

36 Lead Card 28P (J23) ADD7171 37 Assy Holder ANG7121 38 Assy Holder B AMR7267 39 Card Spacer AEC7133 40 Card Spacer DEC1772

71 Screw ABA1015

72 Screw See Contrast table (2)

73 Screw See Contrast table (2)

74 Screw BBZ30P060FCC

75 Screw IBZ30P100FCC

76 Screw BBT30P080FZK

77 Screw BBZ30P080FCC 78 AC Socket 3P See Contrast table (2)

79 Caution Label See Contrast table (2)

80 Fuse Holder See Contrast table (2) 81 Fuse (T5A) See Contrast table (2)

82 Fan Motor AXM7012 NSP 83 Spacer AEB1254

84 Remo-con. Cushion AEB7167

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 :

Part No.

Mark No. Symbol and Description VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks

15 PRIMARY Assy AWX7345 AWX7345 AWX7454 AWX7345 20 AC Power Cord ADG7029 ADG7029 VDG1063 ADG7029 26 AC Cord Spacer ANG1153 ANG1153 Not used ANG1153 26 Cord Stopper Not used Not used CM-22B Not used 27 Bonnet Case AZN7808 AZN7808 AZN7808 AZN7809

54 Rear Panel ANC7742 ANC7742 ANC7818 ANC7866 58 Side Escutheon L 98 AAK7660 AAK7660 AAK7660 Not used 58 Side Escutheon L D8 Not used Not used Not used AAK7662 59 Side Escutheon R 98 AAK7661 AAK7661 AAK7661 Not used 59 Side Escutheon R D8 Not used Not used Not used AAK7663

72 Screw BBT30P100FZK BBT30P100FZK BBT30P100FZK BBT30P100FCC 73 Screw FBT40P080FZK FBT40P080FZK FBT40P080FZK FBT40P080FNI 78 AC Socket 3p AKP-502 AKP-502 Not used AKP-502 79 Caution Label ARW7036 ARW7036 Not used ARW7036 80 Fuse Holder Not used Not used VKR1003 Not used

/HY/EW /HY/GR /HV -G/HY

81 Fuse (T5A) Not used Not used PEK1003 Not used

6

2.3 HEAT SINK SECTION

VSX-908RDS, VSX-908RDS-G

10

16

13

9

12

13

4

3

1

14

13

2

14

11

13

7

13

6

5

13

11

13

9

15

8

13

10

12

(1) HEAT SINK SECTION PARTS LIST

Mark No. Description Part No.

NSP 2 C-AMP-P Assy AWX7317 NSP 3 OUTPUT-SL Assy AWX7322 NSP 4 OUTPUT-FL Assy AWX7319

NSP 6 OUTPUT-FR Assy AWX7320 NSP 7 OUTPUT-SR Assy AWX7323

NSP 9 Heat Sink ANH7102

NSP 12 Power Supply Plate ANG7240

16 Thermistor AEX7004

1 C-AMP N Assy AWX7318

5 OUTPUT-C Assy AWX7321

8 VL-TERMINAL Assy AWX7324 10 Heat Sink Holder B AMR7256 11 Heat Sink Holder A AMR7255 13 Screw See Contrast table (2)

14 Screw ABA1082 15 Screw IBZ30P080FCC

(2) CONTRAST TABLE

VSX-908RDS/HY/EW, HY/GR, HV and VSX-908RDS-G/HY are constructed the same except for the following :

Part No.

Mark No. Symbol and Description VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks

13 Screw BBZ30P080FZK BBZ30P080FZK BBZ30P080FZK BB Z30 P 080FCC

/HY/EW /HY/GR /HV -G/HY

7

VSX-908RDS, VSX-908RDS-G

2.4 FRONT PANEL SECTION

33

4

6

7

27

37

43

14

38

2

Cut

35

D

20

16

35

32

40

35

17

D

B

3

15

35

40

35

A

35

42

41

36

13

26

24

1034

11

44

31

23

34

5

28

30

1

39

24

2223

45

19

32

29

21

25

(1) FRONT PANEL SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.

1 H. PHONE/F. VIDEO Assy AWX7342 2 DISPLAY Assy AWX7414

NSP 3 ROTARY ENCODER Assy AWX7405

4 Door Hinge L See Contrast table (2) 5 Door Hinge R See Contrast table (2)

NSP 6 Magnet Angle ANG7241

7 Door Panel See Contrast table (2) 8 • • • • • 9 • • • • •

10 Door Sheet See Contrast table (2) 11 Display Panel See Contrast table (2)

12 • • • • • 13 Power Button (STANDBY/ON) See Contrast table (2) 14 MR Button (MULTIROOM) See Contrast table (2) 15 Lead Card 32P (J11) ADD7159

16 Lead Card 05P (J14) ADD7162 17 Lead Card 06P (J20) ADD7167 18 • • • • • 19 Lead Card 12P (J21) ADD7166 20 Damper Assy (60) AXA7076

21 Sub Panel See Contrast table (2) 22 Volume Ring See Contrast table (2) 23 Nut NK90FUC 24 Door Cusion See Contrast table (2) 25 Front Panel See Contrast table (2)

NSP 37 Cord with Plug ADH7020

26 LED Lens PNW2019 27 Name Plate See Contrast table (2) 28 Ring Spacer D5 AWL7038 29 FL Sheet D10 AAK7629 30 Volume Knob See Contrast table (2)

(MASTER VOLUME)

31 Rotary Knob See Contrast table (2)

(INPUT SELECTOR) 32 Screw ABA7053 33 Screw PBA1096 34 Screw BBZ30P060FCC 35 Screw BPZ30P080FMC

36 Screw See Contrast table (2) 38 Panel Base See Contrast table (2)

39 Magnet AMF7002 40 Cord Clamper RNH-184

41 P-SW Assy AWX7330 42 Power Button MG See Contrast table (2) 43 Screw See Contrast table (2) 44 GND Spring ABH7172 45 Screw 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 :

Part No.

Mark No. Symbol and Description VSX-908RDS VSX-908RDS VSX-908RDS VSX-908RDS Remarks

4 Door Hinge 26 L AMR7252 AMR7252 AMR7252 Not used 4 Door Hinge D10 L Not used Not used Not used AMR7250 5 Door Hinge 26 R AMR7253 AMR7253 AMR7253 Not used 5 Door Hinge D10 R Not used Not used Not used AMR7251 7 Door Panel 98 ANB7199 ANB7199 ANB7199 Not used

7 Door Panel E07 Not used Not used Not used ANB7175 10 Door Sheet 98R AAK7664 AAK7664 AAK7664 Not used 10 Door Sheet 98RG Not used Not used Not used AAH7057 11 Display Panel SD AAK7630 AAK7630 AAK7630 Not used 11 Display Panel SDG Not used Not used Not used AAK7631

13 Power Button AAD7440 AAD7440 AAD7440 Not used 13 Power Button G Not used Not used Not used AAD7485 14 MR Button 26 AAD7514 AAD7514 AAD7514 Not used 14 MR Button G Not used Not used Not used AAD7541 21 Sub Panel 98 ANB7200 ANB7200 ANB7200 Not used

/HY/EW /HY/GR /HV -G/HY

21 Sub Panel D8 Not used Not used Not used ANB7207 22 Volume Ring 98 AAH7028 AAH7028 AAH7028 Not used 22 Volume Ring D10 Not used Not used Not used AAH7016 24 Door Cusion B AEB7152 AEB7152 AEB7152 Not used 24 Door Cusion G Not used Not used Not used AEB7153

25 Front Panel 908 ANB7173 ANB7173 ANB7173 Not used 25 Front Panel 98RG Not used Not used Not used ANB7176 27 Name Plate B PAN1376 PAN1376 PAN1376 Not used 27 Name Plate G Not used Not used Not used PAN1377 30 Volume Knob 98 AAB7199 AAB7199 AAB7199 Not used

30 Volume Knob 98HL Not used Not used Not used AAB7210 31 Rotary Knob 29 AAB7221 AAB7221 AAB7221 Not used 31 Rotary Knob E07 Not used Not used Not used AAB7209 36 Screw BBZ30P080FZK BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC 38 Panel Base 98 AMB7637 AMB7637 AMB7637 Not used

38 Panel Base D8 Not used Not used Not used AMB7572 42 Power Button M AAD7442 AAD7442 AAD7442 Not used 42 Power Button MG Not used Not used Not used AAD7491 43 Screw BBZ30P050FZK BBZ30P050FZK BBZ30P050FZK BBZ30P050FMC 45 Screw BBT30P080FZK BBT30P080FZK BBT30P080FZK BBT30P080FCC

9

VSX-908RDS, VSX-908RDS-G

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

UNIT

AXX7046

8

CN902

D

IC101

15 3 1

IC103

CN104

16

1

CN9801

59

IC9151

Y

IC9201 IC9202

IC9101

IC9071

IC9203

16

9

IC9321

26

IC9411 IC9421 IC9401

B

R

B

14

11

CN7201

16 17 18

1 CN1001

CN1001

4 3 6

3

CN1001

CN1352

CN906

C

4

IC351

C

2

C

IC9601

CN9801

12 10

4 2

8 6

W

X

R

CN1201

CN1250

A

CN7201

V

DSP+5V

IC1301

IC1303

IC1302

5386

AD+5V

M

CN1302

A+15V

9, 8

7, 2

3, 4

A-15V

IC701

CN702

2

V

1315

3

CN5006

3 5 7 9

11

2

CN1101

5

CN701 4

3 7 5 9

13

11

15

V

14

5, 8 4, 3 1, 2

IC701

3 5 7 9

11

CN9803

CN9804

2

V

1

C

4, 1 5, 6 7, 8

CN1301

1

15

2

IC751

P

13 12

10

IC701

: AUDIO SIGNAL ROUTE

V

: VIDEO SIGNAL ROUTE

Y

: Y SIGNAL ROUTE

C

: C SIGNAL ROUTE

IC105

5, 7

31

Q271

13, 15

9, 11

CN104

25 26 27

7, 11 6, 10

18 19

IC104

D

9, 12

24

17

CN5003

OTHERS

IC108

25

7, 10

19

6, 9

26

20

M

A+15V

IC112

IC114

IC113

A-15V

T+12V

5498

5

6, 4

4

6

IC107

V+5.6V

7

8, 2

2

V-5.6V

CN109

U+5.6V

AD+5V V+5.6V

14

8

16

V-5.6V

IC5007 IC5004 IC5005 IC5006

E

CN501

10

Q510

16

Q550

8

Q610

T+12V

IC5003

A+15V

IC5001

A-15V

IC5002

M

IC7501, IC7502

+3.5 ~ +8.5dB (Normally : +8.5dB)

31

IC7541, IC7542

+3.5 ~ +8.5dB (Normally : +8.5dB)

31

IC7601, IC7602

+3.5 ~ +8.5dB (Normally : +8.5dB)

31

VSX-908RDS, VSX-908RDS-G

ST

S6001

+5V

IC6001

D6001-D6004

RY6001

T1 POWER TRANSFORMER

CN3003

39

RY3105

L

RY3101

RY3103

RY3104

RY3102

V

CN7201

R

D5001–D5004 D5005–D5008

VH+

VH-

CN501

46

Q4501 Q4502

8, 10

CN502

13, 15

3, 4

DSP +5V

IC5008

D4501–D4504

VL+

J

VL-

CN2001

21, 19 Y9

Q2501 Q2524

F

G

16, 14

Q2541 Q2544

26, 24

Q2601 Q2504

Y7Y6

D5009

K

HB

R2512

HC

R2552

HA

R2612

D3001–D3002

Y11

Y12

T6001

AC IN

JA7201

CN103

2, 3

4, 9

8, 7

CN804

2

3

IC851

Q107

IC115

7

Q

Y

13

12

IC852

Y

14

C

5

4

3

IC852

2

1

IC852

C

15

1

IC801

1

IC802

5 9

13

3

7

5 9

13

3

Q108

15 14 13 12

2

11

15

11

15

Q112

Q110

3

IC801

CN804

Y C

6

7

CN7201

Y C

R

Q109

Q111

11

1

23

VSX-908RDS, VSX-908RDS-G

3.2 OVERALL WIRING CONNECTION DIAGRAM

ROTARY ENCODER ASSY

T

(AWX7405)

A

DISPLAY ASSY

ADD7167

S

(AWX7414)

E

E E

1/2, 2/2

V-AMP ASSY (AWX7309)

4

ADD7159

B

ADD7161

1/5- 5/5

ADD7162

Y Y Y

DSP ASSY

(AWX7272)

C

1/3- 3/3

ADD7160

C-AMP-P ASSY

(AWX7317)

G

REGULATOR ASSY

M

(AWX7310)

HE

HD HC HB HA

I

OUTPUT-SR ASSY (AWX7323)

OUTPUT-FR ASSY (AWX7320)

OUTPUT-C ASSY (AWX7321)

OUTPUT-FL ASSY (AWX7319)

OUTPUT-SL ASSY (AWX7322)

VL-TERMINAL ASSY (AWX7324)

D D

ADD7170

D

MAIN CONTROL ASSY

(AWX7410)

ADD7163

CONNECTION ASSY

C

(AWX7347)

ADD7164

D

RF TERMINAL

ASSY

(AWX7376)

12

W

DIGITAL-I/O ASSY

(AWX7396)

1234

X

EXTERNAL IN ASSY (AWX7413)

A

A-PINJACK ASSY (AWX7412)

B

P

VIDEO ASSY

(AWX7422)

5

678

VSX-908RDS, VSX-908RDS-G

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and P AR TS LIST" or "PCB PARTS LIST".

• CAUTION : Heatsink's DC level is equal to +B or -B.

ADD7166

Don't touch them or you will be electricary shocked.

R

H. PHONE/F. VIDEO ASSY (AWX7342)

ADD7171

O

TRANS 2-2 ASSY (AWX7518)

N

TRANS 1 ASSY (AWX7316)

U

P-SW ASSY (AWX7330)

A

ADD7165

DIODE ASSY

(AWX7343)

C-AMP-N ASSY

(AWX7318)

K

F

T1 POWER TRANSFORMER (ATS7253)

TRANS 2-1 ASSY

J

(AWX7403)

V

PRIMARY ASSY (Except HV Type

: AWX7345)

(HV Type Only

: AWX7454)

B

C

L

SP/PS ASSY (AWX7359)

Q

S-VIDEO ASSY

(AWX7395)

13

5

6

7

8

D

1

23

VSX-908RDS, VSX-908RDS-G

3.3 EXTERNAL IN, A-PINJACK and CONNECTION ASSYS

4

A

EXTERNAL IN ASSY

CN1101

(AWX7413)

JA1101-JA1103 : AKB7095

B

LD LD

A-PINJACK ASSY

B

(AWX7412)

JA1015: AKB7048 JA1016: AKB7120

TV TV

V1V1

LD

CN1001

MD

JA1011-JA1013 : AKB7048

C

D

V2

MD

PP

V2

V1

LD

TV

CN1002

P

14

A B

1234

5

678

VSX-908RDS, VSX-908RDS-G

C

CN1301

CN1351

MD

V2

CONNECTION ASSY (AWX7347)

P

TV

V1

CN1302

CN1353

LD

V2

MD

D

1/3

A

CN103

B

V1

TV

CN1352

CN101

1/3

D

C

LD

PP

P

PP

LD

: AUDIO SIGNAL ROUTE (LD)

TV

: AUDIO SIGNAL ROUTE (TV)

V1

: AUDIO SIGNAL ROUTE (VCR1)

V2

: AUDIO SIGNAL ROUTE (VCR2)

MD

: AUDIO SIGNAL ROUTE (MD)

P

: AUDIO SIGNAL ROUTE (PHONO)

D

C

5

6

7

8

15

1

VSX-908RDS, VSX-908RDS-G

3.4 MAIN CONTROL ASSY (1/3)

: The power supply is shown with the marked box.

A

CN906

52045-0545

S

B

CN7005

23

2/3

D

TU

D

2/3

4

TV

1SS355

LD

P

TU

T2

CD

T2

TU

2/3

D

T2

CN941 (1/2)CN941 (2/2)

CD

JA911

C

CD

TU

T2

V2

V1

MD

CN941 : AKB7075 JA911 : DKB1045

P

D

CN101

16

1/3

D

1234

LD

V1

TV

V2

MD

C

CN1353

5

678

VSX-908RDS, VSX-908RDS-G

D

1/3

MAIN CONTROL ASSY (AWX7410)

: AUDIO SIGNAL ROUTE

LD

: AUDIO SIGNAL ROUTE (LD)

TV

: AUDIO SIGNAL ROUTE (TV)

V1

: AUDIO SIGNAL ROUTE (VCR1)

V2

: AUDIO SIGNAL ROUTE (VCR2)

MD

: AUDIO SIGNAL ROUTE (MD)

P

: AUDIO SIGNAL ROUTE (PHONO)

TU

: AUDIO SIGNAL ROUTE (TUNER)

CD

: AUDIO SIGNAL ROUTE (CD)

T2

: AUDIO SIGNAL ROUTE (TAPE2)

MR

: AUDIO SIGNAL ROUTE (MR)

A

B

CN104

1/2

C

2/2

D

CN103

M

CN5004

5

6

7

C

CN1302

D

1/3

8

17

1

VSX-908RDS, VSX-908RDS-G

3.5 MAIN CONTROL ASSY (2/3)

1/3

D

A

23

4

3/3

D

B

MAIN CONTROL ASSY

2/3

(AWX7410)

C

D

18

D

1/3

2/3

D

1234

5

678

VSX-908RDS, VSX-908RDS-G

3/3

D

: The power supply is shown with the marked box.

: AUDIO SIGNAL ROUTE

A

B

Q107 - Q112 : HN1C03F

CN105

1/2

E

CN501

113 (2/3)

113 (1/3)

113 (3/3)

113 : AKB7089

C

D

1/3

D

2/3

D

5

6

7

8

19

1

23

VSX-908RDS, VSX-908RDS-G

4

3.6 MAIN CONTROL ASSY (3/3)

A

To

FM/AM TUNER UNIT

B

CN902

TU

1SS355

D905-D908 1SS355

CN903

Y

CN9551

4/5

1SS355

C

2/3

D

D901-D904 1SS355

D

20

3/3

D

1234

CN901

M

CN5005

M

CN5008

CN920

5

D

3/3

MAIN CONTROL ASSY (AWX7410)

678

VSX-908RDS, VSX-908RDS-G

: The power supply is shown with the marked box.

S

CN7001

A

CN904

B

CN108

5

M

CN5003

C

CN905

P

CN701

3/3

D

6

7

8

21

D

1

23

VSX-908RDS, VSX-908RDS-G

3.7 V-AMP ASSY (1/2)

4

A

E

V-AMP ASSY

1/2

(AWX7309)

IC7601 (1/2) UPC4570G2

IC7501 (1/2) UPC4570G2

B

CN501

E

2/2

IC7541 (1/2) UPC4570G2

2/3

D

CN105

C

IC7521 (1/2) UPC4570G2

2/2

E

IC7621 (1/2) UPC4570G2

505, 506 VEF1040

D

22

1/2

E

1234

5

678

VSX-908RDS, VSX-908RDS-G

A

: AUDIO SIGNAL ROUTE

IC7601 (2/2) UPC4570G2

IC7501 (2/2) UPC4570G2

B

IC7541 (2/2) UPC4570G2

IC7521 (2/2) UPC4570G2

IC7621 (2/2) UPC4570G2

E

2/2

C

D

1/2

E

5

6

7

8

23

1

VSX-908RDS, VSX-908RDS-G

3.8 V-AMP ASSY (2/2)

A

B

23

4

CN504

To

THERMISTOR

1/2

E

1/2

E

C

1/2

E

D

1/2

E

24

2/2

E

1234

5

678

VSX-908RDS, VSX-908RDS-G

A

E

V-AMP ASSY

2/2

(AWX7309)

: AUDIO SIGNAL ROUTE

CN502

B

E

1/2

E

1/2

F

CN2001

C

D

2/2

E

5

6

7

8

25

1

23

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

2/2

E

CN502

CN2001

C

CN2601

2SA970

CN2501

L L

CN2602

CN2603

OUTPUT-SL ASSY (AWX7322)

CN2502

CN2503

HBHA

OUTPUT-FL ASSY (AWX7319)

G

C-AMP-P ASSY (AWX7317)

D

26

F G

1234

HA HB

CN2604

CN2504

5

678

VSX-908RDS, VSX-908RDS-G

2SA970

: AUDIO SIGNAL ROUTE

2SA970

A

B

CN2542

CN2543

CN2544

CN2541 CN2521

L

CN2522

HC

OUTPUT-C ASSY (AWX7321)

CN2523

OUTPUT-FR ASSY (AWX7320)

CN2524

L

HD

CN2621

CN2622

CN2623

CN2624

VL-TERMINAL ASSY (AWX7324)

HE

OUTPUT-SR ASSY (AWX7323)

C

L

D

I

GF

5

6

HC HD HE

7

8

I

27

1

23

VSX-908RDS, VSX-908RDS-G

3.10 TRANS 2-1, DIODE and SP/PS ASSYS

A

B

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 49102.5 MFD, BY LITTELFUSE INC. FOR IC4501, IC4502 (AEK7014).

J

K

TRANS 2-1 ASSY (AWX7403)

R4501–R4503 : 22 C4501–C4502 :

0.033/250

C4501R4501

4

HE

I I

DIODE ASSY (AWX7343)

C4502R4502

FU4, FU5 : T2A AEK-511

C4503R4503

ACH1237

POWER TRANSFORMER

C

• NOTE FOR FUSE REPLACEMENT

CAUTION -

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.750 MFD, BY LITTELFUSE INC. FOR IC3001 (AEK7007).

FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY.

(NP1/100)

4001

3001

V

CN6003

CN3001

750mA

D

TO FAN

28

J K L

1234

CN3002

5

678

VSX-908RDS, VSX-908RDS-G

HA HE

A

I

SP/PS ASSY

L

(AWX7359)

CN3101

CN3102

B

C

M

CN5001

3004

M

CN5002

D

CN3003

L

5

6

7

8

29

1

23

VSX-908RDS, VSX-908RDS-G

3.11 REGULATOR, TRANS 1 and TRANS 2-2 ASSYS

REGULATOR ASSY (AWX7310)

A

M

CN5001

52147-0810

L

3004

CN5002

4

B

D5010

1SS133

CN3003

L

MTZJ10CMTZJ5.1B

C

N

TRANS 1 ASSY (AWX7316)

C5502

ACH1237

NP 1/100

5501

C5501

100K

R5502

R5501

0.47/50 22

5009

V

O

D

J

POWER TRANSFORMER

30

M N O

1234

TRANS 2-2 ASSY (AWX7518)

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).