Pioneer VSXD-812 Service manual

ORDER NO.

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2003

DOWN UP

ENTER

MASTERVOLUME

MULTIJOG

PHONES

STANDBY

STANDBY/ON

PULL OPEN

DVD/LD TV/SAT VCR/DVR VIDEO

CD

CD-R/

TAPE/MD

TUNER

AUX

VSX-D912-S

RRV2745

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

VSX-D912-S

VSX-D812-K

VSX-D812-S

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

Model Type Power Requirement Remarks

VSX-D912-S MYXJIEW AC220-230V

VSX-D812-K MYXJIEW AC220-230V

VSX-D812-S MYXJIEW AC220-230V

VSX-D812-S MYXJIFG AC220-230V

For details, refer to "Important symbols for good services".

T-ZZK APR. 2003 printed in Japan

VSX-D912-S

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SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual

do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been

trained to properly and safely repair complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may

void the warranty. If you are not qualified to perform the repair of this product properly and safely, you

should not risk trying to do so and refer the repair to a qualified service technician.

WARNING

This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to

cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 – Proposition 65

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.

ANY MEASUREMENTS NOT WITHIN THE

LIMITS OUTLINED ABOVE ARE INDICATIVE

OF A POTENTIAL SHOCK HAZARD AND

MUST BE CORRECTED BEFORE RETURN-

ING 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

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.

(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 60 Hz outlet and turn the AC power switch on. Any

current measured must not exceed 0.5 mA.

Device

under

test

Leakage

current

tester

Earth

ground

Reading should

not be above

0.5 mA

Also test with

plug reversed

(Using AC adapter

plug as required)

Test all

exposed metal

surfaces

AC Leakage Test

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[ Important symbols for good services ]

In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.

When you find the procedures bearing any of the symbols, be sure to fulfill them:

2. Adjustments

To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.

In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning

For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,

proper cleaning should be performed to restore their performances.

5. Lubricants, glues, and replacement parts

Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying

glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the

prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed

ones should be used.

4. Shipping mode and shipping screws

To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or

the shipping screws should be installed before shipping out in accordance with this manual, if necessary.

1. Product safety

You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and

should keep the safety during servicing by following the safety instructions described in this manual.

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CONTENTS

SAFETY INFORMATION ..................................................................................................................................... 2

1. SPECIFICATIONS ............................................................................................................................................5

2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 7

2.1 PACKING ................................................................................................................................................... 7

2.2 EXTERIOR SECTION................................................................................................................................ 8

2.3 FRONT PANEL SECTION ....................................................................................................................... 10

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM..........................................................................................12

3.1 BLOCK DIAGRAM ................................................................................................................................... 12

3.2 OVERALL WIRING CONNECTION DIAGRAM........................................................................................ 14

3.3 MAIN ASSY (1/3) ..................................................................................................................................... 16

3.4 MAIN ASSY (2/3) ..................................................................................................................................... 18

3.5 MAIN ASSY (3/3) ..................................................................................................................................... 20

3.6 DSP ASSY (1/2)....................................................................................................................................... 22

3.7 DSP ASSY (2/2)....................................................................................................................................... 24

3.8 AMP & PRIMARY (1/2), TRANS2 and TRANS3 ASSYS ......................................................................... 26

3.9 AMP & PRIMARY (2/2), REG. , AMP INPUT and TRANS1 ASSYS ........................................................ 28

3.10 VIDEO, 6CH IN, BOARD TO BOARD and S. VIDEO ASSYS ................................................................ 30

3.11 FRONT, R. ENCODER and POWER SW ASSYS ................................................................................. 32

3.12 TRANS4, F.VIDEO, H.P., PRE., D.IN and F.OPT&MIC ASSYS.............................................................. 34

3.13 FM/AM TUNER MODULE...................................................................................................................... 36

4. PCB CONNECTION DIAGRAM ..................................................................................................................... 38

4.1 REGULATOR ASSY................................................................................................................................. 38

4.2 TRANS2, TRANS3, TRANS1 and TRANS4 ASSYS................................................................................ 39

4.3 MAIN ASSY ............................................................................................................................................. 40

4.4 DSP ASSY ............................................................................................................................................... 44

4.5 AMP & PRIMARY and AMP INPUT ASSYS............................................................................................ 46

4.6 FRONT, R. ENCODER, POWER SW and H. P. ASSYS .......................................................................... 48

4.7 BOARD TO BOARD, DIGITAL IN, VIDEO and 6CH IN ASSYS ............................................................... 52

4.8 S.VIDEO, F.VIDEO, F.OPT&MIC and PRE-OUT ASSYS......................................................................... 54

4.9 FM/AM TUNER MODULE........................................................................................................................ 56

5. PCB PARTS LIST ........................................................................................................................................... 57

6. ADJUSTMENT ............................................................................................................................................... 64

6.1 TUNER SECTION ....................................................................................................................................64

7. GENERAL INFORMATION ............................................................................................................................. 65

7.1 DIAGNOSIS ............................................................................................................................................. 65

7.1.1 DISASSEMBLY AND DIAGNOSIS........................................................................................................ 65

7.1.2 PCB LOCATION.................................................................................................................................... 66

7.2 PARTS...................................................................................................................................................... 67

7.2.1 IC .......................................................................................................................................................... 67

7.2.2 DISPLAY ............................................................................................................................................... 81

7.3 EXPLANATION ........................................................................................................................................ 83

7.3.1 POWER ON AND OFF INITIAL TIMING CHART.................................................................................. 83

7.3.2 IC DATA TRANSMISSION TIMING CHART.......................................................................................... 85

7.3.3 DETECTION CIRCUIT.......................................................................................................................... 86

7.3.4 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION................................................. 87

7.4 CLEANING............................................................................................................................................... 87

8. PANEL FACILITIES ........................................................................................................................................ 88

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1. SPECIFICATIONS

+0

–3

+0

–3

• Amplifier section

Continuous power output (stereo)

These specifications are applicable when the power supply

is 230 V.

Front.........................................................100 W per channel

(DIN 1kHz, THD 1 %, 8 Ω)

Continuous power output (surround)

These specifications are applicable when the power supply

is 230 V.

Front.........................................................100 W per channel

(1kHz, 1.0 %, 8 Ω)

Center......................................................100 W per channel

(1kHz, 1.0 %, 8 Ω)

Surround..................................................100 W per channel

(1kHz, 1.0 %, 8 Ω)

Surround Back.........................................100 W per channel

(1kHz, 1.0 %, 8 Ω)

Input (Sensitivity/Impedance)

CD, VCR/DVR, CD-R/TAPE/MD,

DVD/LD, TV/SAT.............................................200 mV/47 kΩ

Frequency response

CD, VCR/DVR, CD-R/TAPE/MD,DVD/LD,

TV/SAT...........................................5 Hz to 100,000 Hz dB

Output (Level/Impedance)

VCR/DVR REC, CD-R/TAPE/MD REC............200mV/2.2kΩ

Tone control

Bass..............................................................± 6 dB (100 Hz)

Treble............................................................± 6 dB (10 kHz)

Loudness............................± 6.5 dB/+3 dB (100 Hz/10 kHz)

(at volume level -50 dB)

Signal-to-Noise Ratio

[DIN (Continuous rated power output/50 mW)]

CD, VCR/DVR, CD-R/TAPE/MD, DVD/LD, TV/SAT.....96 dB

• Video Section

Input (Sensitivity/Impedance)

VCR/DVR, DVD/LD, TV/SAT..............................1 Vp-p/75 Ω

Output (Level/Impedance)

VCR/DVR, MONITOR OUT................................1 Vp-p/75 Ω

Frequency Response

VCR/DVR, DVD/LD,

TV/SAT ⇒ MONITOR............................5 Hz to 7 MHz dB

Signal-to-Noise Ratio....................................................55 dB

• FM Tuner Section

Frequency Range................................87.5 MHz to 108 MHz

Usable Sensitivity....................................Mono:13.2 dBf, IHF

(1.3 µV/ 75 Ω)

50 dB Quieting Sensitivity...............................Mono: 20.2 dB

Stereo: 38.6 dBf

Signal-to-Noise RatioStereo.............Mono: 73 dB (at 85 dBf)

Stereo: 70 dB (at 85 dBf)

Distortion..............................................Stereo: 0.5 % (1 kHz)

Alternate Channel Selectivity........................................60 dB

(400 kHz)

Stereo Separation............................................40 dB (1 kHz)

Frequency response.....................................30 Hz to 15 kHz

(±1 dB)

Antenna Input (DIN)....................................75 Ω unbalanced

• AM Tuner Section

Frequency range..................................531 kHz to 1,602 kHz

Selectivity (IHF, Loop antenna)..............................350 µV/m

Selectivity......................................................................25 dB

Signal-to-Noise Ratio....................................................50 dB

Antenna............................................................Loop antenna

• Miscellaneous

Power Requirements........................AC 220-230 V, 50/60Hz

Power Consumption.....................................................280 W

In standby..................................................................0.5 W

Dimensions.........................420 (W) x 158 (H) x 401 (D) mm

Weight (without package)...........................................10.0 kg

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Accessories

Remote control unit

(XXD3054)

Microphone

(APM7004)

Microphone Stand

(AEB7269)

VSX-D912 Only

• Furnished Parts

AM loop antenna..................................................................1

FM wire antenna...................................................................1

Dry cell batteries (AA size IEC R6)......................................2

Remote control.....................................................................1

Microphone (VSX-D912 only)...............................................1

Microphone stand (VSX-D912 only).....................................1

These operating instructions................................................1

• Specifications and the design are subject to possible

modifications without notice, due to improvements.

Cleaning the unit

• Use a polishing cloth or dry cloth to wipe off dust and dirt.

• When the surface is dirty, wipe with a soft cloth dipped in

some neutral cleanser diluted five or six times with water,

and wrung out well, and then wipe again with a dry cloth.

Do not use furniture wax or cleansers.

• Never use thinners, benzine, insecticide sprays or other

chemicals on or near this unit, since these will corrode the

surface.

Note

Manufactured under license from Dolby

Laboratories. "Dolby", "Pro Logic",

"Surround EX", and the double-D symbol

are trademarks of Dolby Laboratories.

"DTS" ,"DTS-ES Extended Surround" and

"Neo:6" are trademarks of Digital Theater

Systems, Inc.

SOURCE

MULTI CONTROL

RECEIVER

INPUT SELECT

STEREO/

DIRECT

MIDNIGHT/

LOUDNESS

ADVANCED

SURROUND

LEVEL

EFFECT

RECEIVER CONTROL

CH

SELECT

STANDARD

BANDRETURN

RF ATT

A

EDCB

DISC

DISPLAY CLASS MPX D.ACCESS

TV CONTROL

MUTE

TOP MENU MENU

SETUP

AUDIO

INPUT ATT

T.EDIT

GUIDE

SUBTITLE

MCACC

SETUP

SLEEP

CHANNEL VOLUME

INPU

T

SEL

ECT

+

10

TEST

TONE

FL

DIMMER

RECEIVER

ST

TUNE

MASTER

VOLUME

ST

TUNE

CHANNEL

DVD/LD

ENTER

ENTER

TV/SAT

CD

VCR/DVR TV CONT

TUNER

CD-R/TAPE

RECEIVER

123

456

7890

AA size IEC R6

Dry cell batteries (x2)

AM loop antenna

(ATB7009)

FM wire antenna

(ADH7030)

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2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

PACKING parts List

(2) CONTRAST TABLE

VSX-D912-S/MYXJIEW, VSX-D812-K/MYXJIEW, VSX-D812-S/MYXJIEW and MYXJIFG are constructed the same

except for the following:

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 product are used for disassembly.

For the applying amount of lubricants or glue, follow the instructions in this manual.

(In the case of no amount instructions, apply as you think it appropriate.)

NOTES:

1

3

2

4

15

8

10

11

6

9

12

17

5

16

7

14

13

VSX-D912-S ONLY

MYXJIEW

TYPE ONLY

Mark

No. Description Part No.

1 FM wire antenna ADH7030

NSP 2 Warranty Card ARY7065

3 AM loop antenna ATB7009

NSP 4 Dry cell batteries (AA/R6) VEM1031

5 Operating instructions See Contrast table(2)

(English/Italian)

6 Remote Control Unit XXD3054

7 Battery Cover AZA7424

NSP 8 Literature Bag AHG1180

9 Packing Sheet AHG7069

10 Left Pad R6 XHA3134

11 Right Pad R6 XHA3135

12 Packing Case See Contrast table(2)

13 MIC Stand 45 See Contrast table(2)

14 Microphone Assy See Contrast table(2)

NSP 15 Accessory Board R6 XHB3008

16 Operating instructions See Contrast table(2)

(Dutch/Spanish)

17 Operating instructions XRC3082

(French/German)

Mark

No. Description Part No.

Mark NO Symbol and Description

VSX-D912-S/

MYXJIEW

VSX-D812-K/

MYXJIEW

VSX-D812-S/

MYXJIEW

VSX-D812-S/

MYXJIFG

5 Operating Instructions (English/Italian) XRE3070 XRE3070 XRE3070 Not used

12 Packing Case XHD3334 XHD3332 XHD3333 XHD3333

13 MIC Stand 45 AEB7269 Not used Not used Not used

14 Microphone Assy APM7004 Not used Not used Not used

16 Operating Instructions (Dutch/Spanish) XRC3081 XRC3081 XRC3081 Not used

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2.2 EXTERIOR SECTION

50

F

P

O

R

Q

S

C

L

I

L

S

Q

P

O

R

J

J

K

K

I

B

F

A

B

B

B

C

A

E

D

E

M

M

Q

H

H

D

NON-CONTACT

SIDE

CONTACT

SIDE

W

L

K

I

A

T

B

F

D

H

E

P

G

C

S

J

45

18

52

53

23

24

52

8

5

13

4

38

46

54

54

36

34

35

20

39

40

40

51

6

9

1

12

11

10

17

21

22

44

14

2

15

33

48

30

31

32

37

29

28

27

58

49

43

42(2/2)

41

42(1/2)

Refer to

"2.3 FRONT PANEL SECTION".

26

7

3

EXCEPT

VSX-D812-K

56

56

55

55

55

57

57

55

55

55

55

55

55

55

55

55

55

62

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

47

55

55

55

55

55

55

55

60

55

55

55

61

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EXTERIOR SECTION parts List

(2) CONTRAST TABLE

VSX-D912-S/MYXJIEW, VSX-D812-K/MYXJIEW, VSX-D812-S/MYXJIEW and MYXJIFG are constructed the

same except for the following:

Mark

No. Description Part No.

1 MAIN Assy See Contrast table(2)

2 DSP Assy AWX1082

3 AMP&PRIMARY Assy XWZ3670

4 TRANS2 Assy XWZ3684

5 TRANS3 Assy XWZ3687

6 REGULATOR Assy XWZ3676

7 AMP INPUT Assy XWZ3679

8 TRANS1 Assy XWZ3681

9 VIDEO Assy XWZ3647

10 6CH IN Assy XWZ3650

11 BOARD TO BOARD Assy XWZ3665

12 S. VIDEO Assy XWZ3660

13 TRANS4 Assy XWZ3662

14 PRE-OUT Assy XWZ3663

15 DIGITAL IN Assy See Contrast table(2)

16 • • • • • •

17 FM/AM TUNER MODULE AXQ7232

>

18 FU1 Fuse (T3.15A) REK1027

19 • • • • • •

>

20 T1 Power Transformer XTS3063

>

21 AC Power Cord VDG1080

22 Cord Stopper CM-22B

23 J36 23P F.F.C/30V XDD3102

24 J46 7P F.F.C/30V XDD3105

25 • • • • • •

26 J22 3P F.F.C/30V XDD3107

27 J33 11P F.F.C/30V XDD3123

28 J48 9P F.F.C/30V XDD3124

29 J34 13P F.F.C/30V XDD3122

30 J43 19P F.F.C/30V XDD3126

31 J31 17P F.F.C/30V XDD3118

32 J35 19P F.F.C/30V XDD3101

33 J37 10P F.F.C/30V XDD3127

NSP 34 Heatsink R6A CORR XNH3026

35 H/S Angle Rear XNG3095

36 H/S Angle Front XNG3094

37 PCB Angle R5 XNG3073

38 PCB Mold AMR2533

NSP 39 Under Base R6 XNA3012

40 Insulator PNW2766

>

41 DC Fan Motor XXM3006

42 Fan Holder R6 XMR3066

43 REG Support R6 XNG3093

44 Rear Panel 812K XNC3196

45 Bonnet See Contrast table(2)

NSP 46 HOLDER Assy XWZ3693

47 FFC Holder R6 XMR3072

48 Shield A R6 XNG3068

49 FFC Cover R6 XMR3060

NSP 50 N Label See Contrast table(2)

NSP 51 Spacer AEB7092

52 Screw BBZ30P200FMC

53 Screw 3x23 ABA7043

54 Screw FBT40P080FZK

55 Screw BBZ30P080FZK

56 Screw See Contrast table(2)

57 Screw See Contrast table(2)

58 Vjack Spacer R6 XEC3038

NSP 59 BINDER Assy XWZ3691

60 Screw BPZ30P120FMC

61 Fuse Card AAX7493

62 Screw BBT30P100FCC

Mark

No. Description Part No.

Mark NO Symbol and Description

VSX-D912-S/

MYXJIEW

VSX-D812-K/

MYXJIEW

VSX-D812-S/

MYXJIEW

VSX-D812-S/

MYXJIFG

1 MAIN Assy XWK3101 XWK3096 XWK3096 XWK3096

15 DIGITAL IN Assy XWZ3659 XWZ3658 XWZ3658 XWZ3658

45 Bonnet D912S XZN3127 Not used XZN3127 XZN3127

45 Bonnet D912K Not used XZN3126 Not used Not used

NSP 50 N Label 912S/MY XAL3173 Not used Not used Not used

NSP 50 N Label 812S/MY Not used Not used XAL3152 XAL3152

56 Screw BPZ30P080FNI BPZ30P080FZK BPZ30P080FNI BPZ30P080FNI

57 Screw FBT40P080FNI FBT40P080FZK FBT40P080FNI FBT40P080FNI

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2.3 FRONT PANEL SECTION

M

O

R

Q

V

N

27

28

29

6

1

4

2

3

5

17

16

30

14

13

15

25

7

8

9

10

10

12

VSX-D912-S ONLY

VSX-D912-S ONLY

11

14

18

19

26

20

23

24

22

21

VSX-D812-K,

VSX-D812-S

ONLY

34

34

34

31

34

34

34

34

34

34

34

34

34

34

34

31

Lubricating Oil

GYA1001

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FRONT PANEL SECTION parts List

(2) CONTRAST TABLE

VSX-D912-S/MYXJIEW, VSX-D812-K/MYXJIEW, VSX-D812-S/MYXJIEW and MYXJIFG are constructed the

same except for the following:

Mark

No. Description Part No.

1 FRONT ASSY XWZ3648

2 R. ENCODER Assy XWZ3653

3 POWER SW Assy XWZ3651

4 FRONT VIDEO Assy XWZ3655

5 H.P. Assy XWZ3654

6 FRONT OPTICAL & MIC Assy See Contrast table(2)

7 Pioneer Badge B See Contrast table(2)

8 Select Knob See Contrast table(2)

9 Volume Knob See Contrast table(2)

NSP 10 C Ring DIM 8.1 XBH3016

11 FRT Panel See Contrast table(2)

12 BN Cover See Contrast table(2)

13 D Panel R6 W XAK3348

14 Cushion See Contrast table(2)

15 LED Lens PNW2019

16 Panel Stay See Contrast table(2)

17 Earth Plate R5 HP XNG3066

18 Door Spring R6 XBK3002

19 J29 8P Shield Cable XDX3012

20 B Lens R6 XAK3352

21 Door See Contrast table(2)

22 Door Cover See Contrast table(2)

23 Holder L R6 XMR3059

24 Damper Assy XXA3025

25 Push Rivet See Contrast table(2)

26 Earth Plate FI R6 XNG3091

27 J30 5P Shield Cable See Contrast table(2)

28 J32 5P F.F.C/30V See Contrast table(2)

29 Earth Plate D R6 See Contrast table(2)

30 Screw XBA3010

31 Screw BBZ30P080FZK

32 • • • • •

33 • • • • •

34 Screw PPZ30P100FMC

Mark

No. Description Part No.

Mark NO Symbol and Description

VSX-D912-S/

MYXJIEW

VSX-D812-K/

MYXJIEW

VSX-D812-S/

MYXJIEW

VSX-D812-S/

MYXJIFG

6 FRONT OPTICAL & MIC Assy XWZ3656 Not used Not used Not used

7 Pioneer Badge B VAM1124 XAM3006 VAM1129 VAM1129

8 SEL Plat Knob R6S XAB3037 Not used XAB3037 XAB3037

8 Select Knob R5BH Not used XAB3023 Not used Not used

9 VOL Plat Knob R6S XAB3036 Not used XAB3036 XAB3036

9 Volume Knob R5BH Not used XAB3025 Not used Not used

11 FRT Panel 912S/MY XNB3001 Not used Not used Not used

11 FRT Panel 812K/MY Not used XMB3106 Not used Not used

11 FRT Panel 812S/MY Not used Not used XMB3107 XMB3107

12 BN Cover 912S/MY XAK3353 Not used Not used Not used

12 BN Cover 712K/MY Not used XAK3378 Not used Not used

12 BN Cover 712S/MY Not used Not used XAK3380 XAK3380

14 Cushion R4G XED3002 Not used XED3002 XED3002

14 Cushion R4B Not used XED3001 Not used Not used

16 Panel Stay 912S/MY XMB3108 Not used Not used Not used

16 Panel Stay 812K/MY Not used XMB3098 Not used Not used

16 Panel Stay 812S/MY Not used Not used XMB3104 XMB3104

21 Door R6S XAK3357 Not used XAK3357 XAK3357

21 Door R6K Not used XAK3356 Not used Not used

22 Door Cover R6S XAK3359 Not used XAK3359 XAK3359

22 Door Cover R6K Not used XAK3358 Not used Not used

25 Push Rivet Not used AEC7025 AEC7025 AEC7025

27 J30 5P Shield Cable XDX3019 Not used Not used Not used

28 J32 5P F.F.C/30V XDD3125 Not used Not used Not used

29 Earth Plate D R6 XNG3092 Not used Not used Not used

VSX-D912-S

12

1234

1234

C

D

F

A

B

E

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

1

1

3

1

CN103

7

CN108

4

CN201

7

CN307

IC101

BD3841FS

(FUNCTION SEL)

IC303

IC8201

IC302

IC302

NJM2595M

NJM2595M

IC105

IC8401

IC8601

IC8603

(ADC)

(DIR)

(DAC)

(CODEC)

(for DECODE)

IC8501

IS61LV6416

-12T(S-RAM)

IC8602

IS63LV1024

-12T(S-RAM)

PD8116A

(ROM)

MOTOROLA

DSP

A

B

J

T

3

1

7

1

5

9

CN105

7

5

1

4

3

IC304

1

7 3

3

5

3

42

44

46

1

13

8

10

12

19

31

27

24

21

25

23

31

IC103

31

IC104

31

IC104

57

IC107

21

IC106

AK4529VQ

AK4114VQ

uPC4570G2

(LPF)

NJM2100M

31

44

51

47

54

52

45

48

55

19

49

56

IC102

3

1

218

6

24

14 26

L

Q

9

5

7

3

9

5

7

3

11

11

CN901

6

CN354

IC351

IC352

(Y SEL)

(C SEL)

16

Q

W

CN952

VSX-D912 Only

2

V

CN901

3

CN107

1

V

16

8

CN1902

CN8017CN1901

CN951

1

1

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

7

10

1

CN8007

11

7

19

15

13

CN109

7

11

5

3

1

7

10

1

CN109

CN8007

3

17

VSX-D912-S

13

5678

56

7

8

C

D

F

A

B

E

14.1/24.1 14.2/27.3 19.3

IC108

IC109

DB3812F

NJM2595M

BD3813FS

IC110

IC111

IC112

IC112

Q362

Q303

Q603

Q601

Q1552

Q653

Q651

Q632

Q631

uPC4570G2

(PRE AMP)

I

F

CN111

18

CN302

3

30

23

27

21

31

31

IC115

141

31

31

5

7

IC601

24

26

IC602

24

26

IC601

RY751

RY753

RY754

RY752

22

15

R

C

S

G

CN702

6

1551

6

CN106

4

CN601

3

87

11

+12V

-12V

T1

POWER

TRANSFORMER

T51

AC IN

D801–D804

U+5V

D51-D54

RY51

IC51

IC801

T+12V

IC805

CN101

IC802

NECK+B

POWER AMP

IC601, IC602

NECK-B

D702

D701

+BVL

+BVH

-BVH

-BVL

FL AC

FL AC

Q701

Q702

C

C

A

D+5V

D721–D724

IC803

A+5V

IC804

CN101

F

A

CN101

A

CN401

M

IC301

(COMPONENT SEL)

I

9

5

7

1

11

Q

3

CN901

5

CN301

3

Q682

Q681

IC602

18

14

RY752

S

12 11

S

S

VSX-D912-S

14

1234

1234

C

D

F

A

B

E

3.2 OVERALL WIRING CONNECTION DIAGRAM

FRONT ASSY

(XWZ3648)

M

DIGITAL IN

ASSY

(VSX-D912

: XWZ3659)

(VSX-D812

: XWZ3658)

T

BOARD TO

BOARD

ASSY

(XWZ3665)

S. VIDEO

ASSY

(XWZ3660)

FRONT

VIDEO ASSY

(XWZ3655)

L

Q

FRONT

OPTICAL

& MIC

ASSY

(XWZ3656)

V

K

R.ENCODER

ASSY

(XWZ3653)

N

MAIN

ASSY

(VSX-D912

: XWK3101)

(VSX-D812

: XWK3096)

A

REGULATOR

ASSY

(XWZ3676)

F

6CH IN ASSY

(XWZ3650)

J

VIDEO

ASSY

(XWZ3647)

FM/AM TUNER

MODULE

(AXQ7232)

I

W

AMP INPUT ASSY

(XWZ3679)

G

A 1/3,

A 2/3,

A 3/3

DSP

ASSY

(AWX1082)

B

B 1/2,

B 2/2

VSX-D912-S

15

5678

56

7

8

C

D

F

A

B

E

PRE-OUT

ASSY

(XWZ3663)

VDG1080

S

VSX-D912 Only

POWER SW ASSY

(XWZ3651)

O

R

H.P. ASSY

(XWZ3654)

TRANS3

ASSY

(XWZ3687)

EP

TRANS2

ASSY

(XWZ3684)

TRANS1

ASSY

(XWZ3681)

D

H

AMP&

PRIMARY

ASSY

(XWZ3670)

C

Y8

Y8

J7J6

J1J2

J4

J5

C 1/2,

C 2/2

TRANS4

ASSY

(XWZ3662)

VSX-D912-S

16

1234

1234

C

D

F

A

B

E

3.3 MAIN ASSY (1/3)

A

A

1/3

VSX-D912 only

VSX-D812,

only

CN901

Q

CN952

V

CN804

F

A 3/3

A 3/3

A 3/3

VSX-D912-S

17

5678

56

7

8

C

D

F

A

B

E

A

1/3

A

1/3

MAIN ASSY

(VSX-D912 : XWK3101)

(VSX-D812 : XWK3096)

: The power supply is shown with the marked box.

A 2/3

A 2/3

A 2/3

A 2/3

A 2/3

A 2/3

A 2/3

A 2/3

A 2/3

A 3/3

VSX-D912-S

18

1234

1234

C

D

F

A

B

E

3.4 MAIN ASSY (2/3)

A

A

2/3

A

2/3

MAIN ASSY

(VSX-D912 : XWK3101)

(VSX-D812 : XWK3096)

A 1/3

A 3/3

A 3/3

CN307

J

VSX-D912-S

19

5678

56

7

8

C

D

F

A

B

E

A

2/3

A 3/3

A 3/3

CN254

G

VSX-D912-S

20

1234

1234

C

D

F

A

B

E

3.5 MAIN ASSY (3/3)

VSX-D812/MY

VSX-D912/MY

A

A

3/3

VSX-D812,

only

A 1/3

A 1/3

A 2/3

: The power supply is shown with the marked box.

CN802

F

CN201

W

CN303

I

VSX-D912-S

21

5678

56

7

8

C

D

F

A

B

E

A

3/3

A

3/3

MAIN ASSY

(VSX-D912 : XWK3101)

(VSX-D812 : XWK3096)

A 2/3

A 2/3

A 1/3

A 1/3

B 2/2

A 2/3

CN8012

CN401

M

VSX-D912-S

22

1234

1234

C

D

F

A

B

E

3.6 DSP ASSY (1/2)

A

B

1/2

CN1901

T

NO USE

NO USE

NO USE

NO USE

NO USE

VSX-D912-S

23

5678

56

7

8

C

D

F

A

B

E

B

1/2

B

1/2

DSP ASSY

(AWX1082)

F

F

CN805

CN806

: The power supply is shown with the marked box.

AWX1082 : NO USE

VSX-D912-S

24

1234

1234

C

D

F

A

B

E

3.7 DSP ASSY (2/2)

A

B

2/2

A 3/3

CN112

VSX-D912-S

25

5678

56

7

8

C

D

F

A

B

E

AWX1082 : NO USE

B

2/2

B

2/2

DSP ASSY

(AWX1082)

VSX-D912-S

26

1234

1234

C

D

F

A

B

E

3.8 AMP & PRIMARY (1/2), TRANS2 and TRANS3 ASSYS

MYXJI

MYXJI

C 1/2

CN253

G

C

1/2

AMP&PRIMARY ASSY

(XWZ3670)

VSX-D912-S

27

5678

56

7

8

C

D

F

A

B

E

MYXJI

MYXJI

MYXJI

MYXJI

D E

TRANS3

ASSY

E

TRANS2

ASSY

(XWZ3684)

D

(XWZ3687)

POWER

TRANSFORMER

1551

R

CN1575

S

CAUTION :

FOR CONTINUED

PROTECTION AGAINST

RISK OF FIRE.

REPLACE ONLY WITH

SAME TYPE NO. 491004

FOR IC851 AND IC852

MFD, BY LITTELFUSE INC.

CAUTION :

FOR CONTINUED

PROTECTION AGAINST

RISK OF FIRE.

REPLACE ONLY WITH

SAME TYPE NO. 491001

FOR IC603 MFD, BY

LITTELFUSE INC.

CAUTION : FOR CONTINUED PROTECTION

AGAINST RISK OF FIRE.

REPLACE ONLY WITH SAME TYPE

NO. 491003 FOR IC853 MFD, BY

LITTELFUSE INC.

CAUTION : FOR CONTINUED PROTECTION

AGAINST RISK OF FIRE.

REPLACE ONLY WITH SAME TYPE

NO. 491010 FOR IC604, IC605, IC606,

AND IC607 MFD, BY LITTELFUSE INC.

C 2/2

C 2/2

C 2/2

• NOTE FOR FUSE REPLACEMENT

FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.

REPLACE WITH SAME TYPE AND RATINGS ONLY.

CAUTION -

CAUTION : FOR CONTINUED PROTECTION

AGAINST RISK OF FIRE.

REPLACE ONLY WITH SAME TYPE

NO. ICP-N10 FOR IC701 AND IC702

MFD, BY ROHM CO., LTD.

C

1/2

VSX-D912-S

28

1234

1234

C

D

F

A

B

E

3.9 AMP & PRIMARY (2/2), REG. , AMP INPUT and TRANS1 ASSYS

F

CN111

C 1/2

A 3/3

A 1/3

B 1/2

B 1/2

CN8003

CN302

I

REGULATOR

ASSY

(XWZ3676)

F

C

2/2

CN109

CN8007