Pioneer VSX-D908TX User manual

ORDER NO.
PIONEER ELECTRONIC 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
PIONEER ELECTRONIC CORPORATION 1999
RRV2153
T – ZZK JUNE 1999 Printed in Japan
CONTENTS
1. CONTRAST OF MISCELLANEOUS PARTS........2
2. SCHEMATIC DIAGRAM .......................................7
3. PCB CONNECTION DIAGRAM..........................10
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-D908TX
VSX-D908TX-G
Type Model Power Requirement The voltage can be converted by
VSX-D908TX VSX-D908TX-G the following method.
SD ‡‡
AC110V/120–127V/220V/240V With the voltage selector
¶This service manual should be used together with the following manual(s):
Model Order No. Remarks
VSX-24TX/KU/CA RRV2133
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Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
2
1. CONTRAST OF MISCELLANEOUS PARTS
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.
Reference Nos. indicate the pages and Nos. in the service manual for the base model.
NOTES:
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%).
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
561
473
R50
1R0
5621
560
47k
0.5
1
RD1/4PU J
RD1/4PU J
RN2H K
RS1P K
56 x 101
47 x103
R50
1R0
561
473
5.62k RN1/4PC F562 x 1015621
CONTRAST TABLE
Part No.
Ref. No. Mark Symbol and Description VSX-24TX VSX-D908TX VSX-D908TX-G Remarks
/KU/CA /SD /SD
ASSEMBLIES
MAIN ASSY AWK7531 AWK7539 AWK7539
P5- 5 MAIN CONTROLASSY AWX7406 AWX7425 AWX7425
P5-12 VIDEO ASSY AWX7407 AWX7422 AWX7422
COMPLEX ASSY AWK7526 AWK7540 AWK7540
P5- 3 A-PINJACK ASSY AWX7401 AWX7397 AWX7397 *1
P5-10 TRANS 1 ASSY AWX7316 Not used Not used
P5-15 PRIMARYASSY AWX7311 AWX7426 AWX7426
/SD ASSY Not used AWX7448 AWX7448 No.1
FRONT/VAMP ASSY AWK7527 AWK7541 AWK7541
P5-19 V-AMP ASSY AWX7409 AWX7309 AWX7309 *2
P9- 1 H.PHONE/F.VIDEO ASSY AWX7528 *3 AWX7342 AWX7342
P9- 2 DISPLAY ASSY AWX7529 *4 AWX7408 AWX7408
POWER/CURRENT ASSY AWK7498 AWK7510 AWK7510
P5- 6 TRANS 2-1ASSY AWX7326 AWX7403 AWX7404
P5- 8 SP/PS ASSY AWX7325 AWX7359 AWX7359
PACKING SECTION
P3- 3 Operating Instructions (English) ARB7186 Not used Not used
P3- 3 Operating Instructions (English) Not used ARE7213 ARE7213
Operating Instructions (Chinese) Not used ARC7286 ARC7286
Operating Instructions (Spanish) Not used ARC7287 ARC7287
P3- 4 Remote Control Unit (CU-VSX159) AXD7212 Not used Not used
P3- 4 Remote Control Unit (CU-VSX163) Not used AXD7234 Not used
P3- 4 Remote Control Unit (CU-VSX164) Not used Not used AXD7235
P3- 9 Packing Case AHD7784 AHD7795 AHD7799
P3-12 NSP Warranty Card ARY1026 ARY7025 Not used
NSP Caution Card 220V Not used ARR7003 ARR7003 On thePolyethylene Bag
AC Plug Adapter Not used AKX7011 AKX7011 For Accessories
VSX-D908TX/SD, VSX-D908TX-G/SD and VSX-24TX/KU/CA are constructed the same except for the following :
*1, *2, *3, *4 : refer to VSX-26TX/KU/CA on the Service manual RRV2133.
*3 : As for H.PHONE/F.VIDEO ASSY, the design change was done from AWX7342 to AWX7528.
*4 : As for DISPLAY ASSY, the design change was done fromAWX7408 toAWX7529.
w w w . x i a o y u 1 6 3 . c o m
Q Q
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7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
3
Notes : ÷The numbers in the remarks column correspond to the numbers on the “ EXPLODED VIEWS ”.
÷For PCBASSEMBLIES, Refer to “CONTRAST OF PCB ASSEMBLIES”, “2. SCHEMATIC DIAGRAM” and “3. PCB CONNEC-
TION DIAGRAM”.
Part No.
Ref. No. Mark Symbol and Description VSX-24TX VSX-D908TX VSX-D908TX-G Remarks
/KU/CA /SD /SD
EXTERIOR SECTION
P5-20 AC Power Cord ADG7024 ADG7029 ADG7029
P5-21 Power Transformer (T1) (AC120V) ATS7252 Not used Not used
P5-21 Power Transformer (T1) Not used ATS7255 ATS7255
(AC110V/120-127V/220V/240V)
P5-22 FM/AM TUNER Unit AXX7046 AXX7047 AXX7047
P5-23 Fuse (FU1 : 10A) VEK1029 Not used Not used
P5-23 Fuse (FU1 : 10A) Not used DEK1045 DEK1045
P5-24 Fuse (FU4 : 2.5A) REK1079 Not used Not used
P5-24 Fuse (FU4 : 2.5A) Not used AEK-511 AEK-511
P5-25 Fuse (FU5 : 2.5A) REK1079 Not used Not used
P5-25 Fuse (FU5 : 2.5A) Not used AEK-511 AEK-511
P5-26 Cord Stopper CM22C Not used Not used
P5-26 AC Cord Spaser Not used ANG1153 ANG1153
P5-27 Bonnet Case AZN7789 AZN7789 AZN7794
P5-54 Rear Panel ANC7847 ANC7741 ANC7842
P5-58 Side Escutheon L AAK7633 AAK7633 AAK7637
P5-59 Side Escutheon R AAK7634 AAK7634 AAK7638
P5-73 Screw FBT40P080FZK FBT40P080FZK FBT40P080FNI
P5-67 Screw (×5, For Front Panel Bottom side) BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC
P5-67 Screw (×7, For Bonnet Case) BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC
Screw (×2, For AC Outlet on Rear Panel) BBZ30P080FZK Not used Not used
Screw (×4, For Front Panel Top side) IBZ30P100FCC IBZ30P100FCC IBZ30P100FCC
Fuse (FU2, 3 : T5A) Not used AEK1061 AEK1061 No.2
AC Outlet 3P Not used AKP-502 AKP-502 No.3
Voltage Selector Not used AKX-507 AKX-507 No.4
FRONT PANEL SECTION
P9- 4 Door Hinge L AMR7252 AMR7252 AMR7250
P9- 5 Door Hinge R AMR7253 AMR7253 AMR7251
P9- 7 Door Panel AMB7633 AMB7624 AMB7625
P9- 9 NSP Door Plate AAH7059 AAH7059 AAH7060
P9-10 Door Sheet AAK7677 AAK7677 AAK7675
P9-11 Display Panel AAK7625 AAK7630 AAK7631
P9-13 Power Button (STANDBY/ON) AAD7440 AAD7440 AAD7485
P9-21 Sub Panel AMB7575 AMB7617 AMB7618
P9-22 Volume Ring AAK7623 AAK7623 AAH7016
P9-24 Door Cusion AEB7152 AEB7152 AEB7153
P9-25 Front Panel AMB7613 AMB7614 AMB7636
P9-27 Name Plate PAN1376 PAN1376 PAN1377
P9-29 FL Sheet AAK7627 AAK7627 AAK7629
P9-30 Volume Knob (MASTER VOLUME) AAB7193 AAB7193 AAB7207
P9-31 Rotary Knob (INPUT SELECTOR) AAB7196 AAB7196 AAB7208
P9-36 Screw BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC
P9-38 Panel Base AMB7569 AMB7569 AMB7571
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
4
Screw
BBZ30P080FZK
PRIMARY Assy
2Rear Panel
1
4
3
AC Cord Spaser
Screw
BBZ30P080FZK
AC Power Cord
CONTRAST OF PCB ASSEMBLIES
AWX7425 and AWX7406 are constructed the same except for the following :
Part No.
Ref. No. Mark Symbol and Description AXD7212 AXD7234 AXD7235 Remarks
(CU-VSX159) (CU-VSX163) (CU-VSX164)
P98- 1 Name Plate A AZA7337 AZA7356 AZA7353
P98- 2 Name Plate B AZA7338 AZA7359 AZA7359
P98- 3 Rubber Sheet AZA7339 AZA7355 AZA7355
P98- 8 Battery Cover AZN2401 AZN2401 AZN7791
P98- 9 Case (A) AZN7780 AZN7780 AZN7792
P98-10 Case (B) AZN7781 AZN7781 AZN7793
CONTRAST OF REMOTE CONTROL UNIT
AXD7234, AXD7235 andAXD7212 are constructed the same except for the following :
MAIN CONTROL ASSY
F
D
Mark Symbol and Description Part No. Remarks
AWX7406 AWX7425
IC109 NJM4558MD Not used
Q113, Q114 2SC2878 Not used
D201, D202 UDZS5.1B Not used
C141, C142, C149, C150 CEAT100M50 Not used
C147, C148 CEAT1R0M50 Not used
C143, C144 CKSQYB103K50 Not used
R109 RD1/2VM391J Not used
R110 RS1/10S472J Not used
R129, R130 RS1/10S104J Not used
R131, R132 RS1/10S471J Not used
R133, R134 Not used RS1/10S102J *
R135, R136, R924, R926 RS1/10S103J Not used
R141–R144 RS1/10S102J Not used
R145, R146 RS1/10S473J Not used
R320, R322, R335, R336 RS1/10S0R0J Not used
R325–R330 Not used RS1/10S0R0J *
R923, R925 Not used RS1/10S103J *
CN911 AKB7015 Not used
JA911 (For CN911) Not used DKB1045
* : refer to VSX-26TX/KU/CAon the Service manual RRV2133.
EXPLODED VIEWS
÷EXTERIOR SECTION
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
5
AWX7359 and AWX7325 are constructed the same except for the following :
SP/PS ASSY
F
L
AWX7403 and AWX7326 are constructed the same except for the following :
TRANS 2-1 ASSY
F
J
Mark Symbol and Description Part No. Remarks
AWX7326 AWX7403
C4501–C4503 Not used ACH1237 (1µF/100V)
C4509, C4510 CEAT101M50 CECA101M50
R4501–R4503 Not used RFA1/4PS220J
Mark Symbol and Description Part No. Remarks
AWX7325 AWX7359
IC3001 Not used AEK7007
Q3501, Q3502 Not used DTA124ES
Q3503 Not used 2SC4793
Q3504 Not used 2SC2235
D3052, D3054, D3056, D3058, D3010 Not used 1SS133
D3501, D3502 Not used S5688G
D3505 Not used MTZJ27D
D3506, D3508 Not used MTZJ12C
D3507 Not used MTZJ5.1B
C3001, C3002 ACH7130 (22000µF/50V) ACH7129 (22000µF/56V)
C3101–C3105 CFTYA104J50 CFTYA224J50
C3106–C3110 Not used CFTYA224J50
C3111–C3117 CQHA102J2A CQMA332K2E
C3501 Not used CEAT471M35
C3502 Not used CEAT1R0M50
C3503 Not used CKCYF103Z50
C3504 Not used CEAT471M25
R3133, R3134 Not used RS1LMF471J
R3501 Not used RD1/4PU471J
R3502 Not used RD1/4PU473J
R3503 Not used RD1/4PU102J
R3504 Not used RD1/4PU104J
R3505 Not used RS3LMF221J
R3506 Not used RD1/4PU222J
R3507 Not used RD1/4PU103J
CN3002 Not used KM250MA3
CN3101 AKE7033 AKE7044
CN3102 AKE7034 AKE7045
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
6
AWX7426 and AWX7311 are constructed the same except for the following :
PRIMARY ASSY
F
V
Mark Symbol and Description Part No. Remarks
AWX7311 AWX7426
T6001 ATT7043 ATT7041
R6001 (2.2MΩ/ 1/2W) RCN1080 Not used
H6003–H6006 Not used AKR1004
Y6003 Not used ADX7283
Y6004 Not used ADX7282
Y6005 Not used ADX7281
J6001 Not used DB640EB0
J6002 Not used DB416EB0
6004 AKP1053 Not used
PCB PARTS LIST
Mark No. Description Part No.
/SD ASSY
OTHERS
S6701 VOLTAGE SELECTOR AKX1004
F
Z
AWX7422 and AWX7407 are constructed the same except for the following :
VIDEO ASSY
Mark Symbol and Description Part No. Remarks
AWX7407 AWX7422
D731 1SS355 Not used
C731 CCSQCH181J50 Not used
C791 CKSQYB103K50 Not used
R731 RS1/10S750J Not used
R732 RS1/10S102J Not used
JA701 AKB7056 Not used
JA703 AKB7115 Not used
JA705 AKN7014 Not used
702 Not used AKB7017 *
707 Not used AKB7020 *
* : refer to VSX-26TX/KU/CAon the Service manual RRV2133.
F
P
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
7
A
B
C
D
1234
1234
2. SCHEMATIC DIAGRAM
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST"
2.1 PRIMARY and /SD ASSYS
F
NF Z
CN3001
CN6003 KP200TA4L
CN6002 RKP1751
LIVE
NEUTRAL
FU1 : 10A DEK1045
FU2, 3 : T5A AEK1061
H6003–H6006 AKR1004
AC IN
1SS133
DTC143ES
1SS133
D6001-D6004 : S5688G
• NOTE FOR FUSE REPLACEMENT
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY.
CAUTION -
/SD ASSY (AWX7448)
F
Z
PRIMARY ASSY (AWX7426)
F
V
F
L
H6001, H6002 AKR1004
Voltage Selector AKX-507
AC Outlet 3P AKP-502
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
8
A
B
C
D
1234
1234
CN3001
CN3002
3001
4001
TRANS 2-1 ASSY
(AWX7403)
K
DIODE ASSY
(AWX7343)
I I
CN6003
TO FAN
POWER TRANSFORMER
HE
• NOTE FOR FUSE REPLACEMENT
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE AND RATINGS ONLY.
CAUTION -
FU4, FU5 : 2.5A
AEK-511
R4501–R4503 : 22
C4501–C4503 :
ACH1237 (NP1/100)
C4501R4501
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE NO. 491.750 MFD, BY
LITTELFUSE INC. FOR IC3001 (AEK7007).
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE NO. 49102.5 MFD, BY
LITTELFUSE INC. FOR IC4501, IC4502 (AEK7014).
F
V
F
J
C4502R4502
C4502R4502
750mA
2.2 TRANS 2-1, DIODE and SP/PS ASSYS
F
JF L K
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
9
A
B
C
D
5678
5678
CN3101
3004
CN3003
CN3102
SP/PS ASSY
(AWX7359)
CN5001
CN5002
M
I
M
HA HE
F
L
F
L
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

VSX-D908TX, VSX-D908TX-G
10
A
B
C
D
1234
1234
3. 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 Part Name
Transistor
Transistor
with resistor
Field effect
transistor
Resistor array
3-terminal
regulator
BCE
BCE
BCE
DGS
BCE
BCEBCE
DGSDGS
3. The parts mounted on this PCB include all necessary parts
for several destination.
For further information for respective destinations, be sure
to check with the schematic diagram.
4. Viewpoint of PCB diagrams
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B
F
/SD ASSY
Z
J6006 J6005 J6004
V
(ANP7308-C)
SIDE A
3.1 /SD ASSY
F
Z
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com