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AUDIO/VIDEO MULTI-CHANNEL RECEIVER
INPUT
SELECTOR
STANDBY/ON
DSP EON
STANDBY MODE STEREO MODE
/DTS
FL
THX CINEMA ADVANCED STANDARD DIMMER
--OFF _ON MPEG
MASTER
VOLUME
DOWN UP
ORDER NO.
RRV2166
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-908RDS
VSX-908RDS-G
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model The voltage can be converted by the
Type Power Requirement
VSX-908RDS VSX-908RDS-G following method.
HY/EW AC220-230V AC240V,
HY/GR AC220-230V AC240V,
HV AC230V AC240V,
HY AC220-230V 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 7. GENERAL INFORMATION ................................ 80
2. EXPLODED VIEWS AND PARTS LIST ............... 3 7.1 DISASSEMBLY ............................................ 80
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ... 10 7.2 PARTS .......................................................... 82
4. PCB CONNECTION DIAGRAM ......................... 48 7.2.1 IC ............................................................ 82
5. PCB PARTS LIST ............................................... 71 7.2.2 DISPLAY ................................................. 86
6. ADJUSTMENT .................................................... 79 7.3 REMOTE CONTROL UNIT .......................... 88
8. PANEL FACILITIES AND SPECIFICATIONS ....... 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-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.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
The following check should be performed for the
continued protection of the customer and service SHOCK HAZARD AND MUST BE CORRECTED BEFORE
technician. RETURNING THE APPLIANCE TO THE CUSTOMER.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground (water 2. PRODUCT SAFETY NOTICE
pipe, conduit, etc.) by connecting a leakage current tester Many electrical and mechanical parts in the appliance
such as Simpson Model 229-2 or equivalent between the have special safety related characteristics. These are
earth ground and all exposed metal parts of the appliance often not evident from visual inspection nor the protection
(input/output terminals, screwheads, metal overlays, control afforded by them necessarily can be obtained by using
shaft, etc.). Plug the AC line cord of the appliance directly replacement components rated for voltage, wattage, etc.
into a 120V AC 60Hz outlet and turn the AC power switch Replacement parts which have these special safety
on. Any current measured must not exceed 0.5mA. 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
Reading should in this Service Manual.
Leakage not be above The use of a substitute replacement component which does
Device current 0.5mA
tester not have the same safety characteristics as the PIONEER
under
test recommended replacement one, shown in the parts list in
Test all this Service Manual, may create shock, fire, or other hazards.
exposed metal Product Safety is continuously under review and new
surfaces
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
Also test with
plug reversed Earth Service Manual may be obtained at a nominal charge from
(Using AC adapter ground PIONEER.
plug as required)
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
1
2
5 3 (Except HY/GR Type)
13 12 14 (Except HV Type)
11 15, 16, 17, 18, 19, 20
(HY/EW and HY Types Only)
13
4
Refer to
"7.3 REMOTE
CONTROL UNIT". 10
7 (2/2)
7 (1/2)
8
9
(1) PACKING PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 AM Loop Antenna ATB7009 11 Polyethylene Bag Z21-038
2 FM Wire Antenna ADH7010 (0.03×230×340)
3 Operating Instructions(English) See Contrast table (2) NSP 12 Warranty Card ARY7022
4 Remote Control Unit See Contrast table (2) 13 Spacer AHB7032
NSP 5 Alkaline Dry Cell Battery VEM1012 14 Operating Instructions See Contrast table (2)
(LR6, AA) 15 Operating Instructions See Contrast table (2)
6 ····· 16 Operating Instructions See Contrast table (2)
7 Front Pad AHA7253 17 Operating Instructions See Contrast table (2)
8 Rear Pad AHA7254 18 Operating Instructions See Contrast table (2)
9 Packing Case See Contrast table (2) 19 Operating Instructions See Contrast table (2)
10 Packing Sheet RHC1023 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
67 *1
(Except HV Type) 79
77 *2 20
67 *1 Note *1 : VSX-908RDS
27 77 *2 *2 : VSX-908RDS-G
81 80
(HV Type Only)
67 *1
77 *2
73 67 *1
66 *2
73 26
(Except HV Type)
26
(Except HV Type) (HV Type Only)
83 78
67 *1
66 *2
10 20
6 82
54 75 67 *1
68 66 *2
73
11 24 M 67 *1
N 25 66 *2
71 O
23 O 33 13
21
71 63
37 15 I
J
67 *1
77 *2 51
62
Refer to 16 28
"2.4 FRONT PANEL SECTION". M 30 K
43 69
J H P
58 72 12
L 70
43 G 17
32 31
65 22
69 8
53
67
7 Refer to
67 *1
66 *2 "2.3 HEAT SINK SECTION".
59 52 67 *1 55
67 *1
66 *2 77 *2 70
67 38
52 67 *1
F 77 *2
66 50
52
64 51 67 *1
66 *2
70 I 35
36 H
F
G
4 2
48 3
49 70 B
L
19 39 70
49 51 44 84 K P
40 29
42 5
49 E 84
34 67 *1 A
66 *2 E
67 *1 50 67
67 *1 66 *2 9
67 *1 N
66 *2
45 77 *2
18
44 67 *1
42 77 *2
67 *1
67 *1 77 *2
66 *2
4
VSX-908RDS, VSX-908RDS-G
(1) EXTERIOR PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 ····· 41 ·····
NSP 2 EXTERNAL IN Assy AWX7413 42 Cushion 55 PNM1316
NSP 3 A-PINJACK Assy AWX7412 NSP 43 Frame 26 ANG7238
4 CONNECTION Assy AWX7347 44 Insulator PNW2766
5 MAIN CONTROL Assy AWX7410 45 Locking Card Spacer DEC1908
6 TRANS 2-1 ASSY AWX7403 46 ·····
7 DIODE Assy AWX7343 47 ·····
8 SP/PS Assy AWX7359 NSP 48 Panel Stay 26 AND7031
9 REGULATOR Assy AWX7310 49 PC Support VEC1549
10 TRANS 1 Assy AWX7316 NSP 50 PCB Holder AEC7057
11 TRANS 2-2 Assy AWX7518 NSP 51 PCB Holder PNW2100
12 VIDEO Assy AWX7422 NSP 52 PCB Mould AMR1525
13 S-VIDEO Assy AWX7395 53 PCB Spacer AEC1372
14 ····· 54 Rear Panel See Contrast table (2)
15 PRIMARY Assy See Contrast table (2) 55 Shield Case ANK7054
16 DIGITAL-I/O Assy AWX7396 56 ·····
NSP 17 RF TERMINAL Assy AWX7376 57 ·····
18 DSP Assy AWX7272 58 Side Escutheon L See Contrast table (2)
19 V-AMP Assy AWX7309 59 Side Escutheon R See Contrast table (2)
20 AC Power Cord See Contrast table (2) 60 ·····
21 Power Transformer (T1) ATS7253 61 ·····
22 FM/AM TUNER Unit AXX7048 62 Stud Cover AEC7105
23 Fuse (FU1 : T4A) AEK-514 63 Terminal Screw AKE-031
24 Fuse (FU4 : T2A) AEK-511 NSP 64 Under Base 26 ANA7089
25 Fuse (FU5 : T2A) AEK-511 NSP 65 Binder (BK-1) ZCA-BK1
26 AC Cord Spacer See Contrast table (2) 66 Screw BBT30P080FCC
27 Bonnet Case See Contrast table (2) 67 Screw BBZ30P080FZK
28 2P Shield with Housing (J24) ADX7250 68 Screw ABA1193
29 Lead Card 07P (J13) ADD7161 69 Screw IBZ30P080FCC
30 Lead Card 11P AD (J22) ADD7170 70 Screw BBZ30P180FMC
31 Lead Card 13P AD (J16) ADD7169 71 Screw ABA1015
32 Lead Card 14P (J17) ADD7165 72 Screw See Contrast table (2)
33 Lead Card 21P (J18) ADD7164 73 Screw See Contrast table (2)
34 Lead Card 23P BD SLD (J12) ADD7160 74 Screw BBZ30P060FCC
35 Lead Card 26P (J15) ADD7163 75 Screw IBZ30P100FCC
36 Lead Card 28P (J23) ADD7171 76 Screw BBT30P080FZK
37 Assy Holder ANG7121 77 Screw BBZ30P080FCC
38 Assy Holder B AMR7267 78 AC Socket 3P See Contrast table (2)
39 Card Spacer AEC7133 79 Caution Label See Contrast table (2)
40 Card Spacer DEC1772 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
/HY/EW /HY/GR /HV -G/HY
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
81 Fuse (T5A) Not used Not used PEK1003 Not used
6
VSX-908RDS, VSX-908RDS-G
2.3 HEAT SINK SECTION
11
9
13
12
15
13 13 7
16 6 8
13 5
4 13 13
3
10
1 13
13
14
10
13
2 12
14
13
11
9
(1) HEAT SINK SECTION PARTS LIST
Mark No. Description Part No.
1 C-AMP N Assy AWX7318
NSP 2 C-AMP-P Assy AWX7317
NSP 3 OUTPUT-SL Assy AWX7322
NSP 4 OUTPUT-FL Assy AWX7319
5 OUTPUT-C Assy AWX7321
NSP 6 OUTPUT-FR Assy AWX7320
NSP 7 OUTPUT-SR Assy AWX7323
8 VL-TERMINAL Assy AWX7324
NSP 9 Heat Sink ANH7102
10 Heat Sink Holder B AMR7256
11 Heat Sink Holder A AMR7255
NSP 12 Power Supply Plate ANG7240
13 Screw See Contrast table (2)
14 Screw ABA1082
15 Screw IBZ30P080FCC
16 Thermistor AEX7004
(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
13 Screw BBZ30P080FZK BBZ30P080FZK BBZ30P080FZK BBZ30P080FCC
7
VSX-908RDS, VSX-908RDS-G
2.4 FRONT PANEL SECTION 35
35 35 40
35
35
42
41
36 19 35
17
32 D
13
1 2 40
D
16
39
29 B
35
26 14 3 A
24
33
15
4 34 10
6 44 32
37 11
7 20
43
27 31 2324 Cut
34
38
5
21
23 22
28
45
30
25
(1) FRONT PANEL SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 H. PHONE/F. VIDEO Assy AWX7342 26 LED Lens PNW2019
2 DISPLAY Assy AWX7414 27 Name Plate See Contrast table (2)
NSP 3 ROTARY ENCODER Assy AWX7405 28 Ring Spacer D5 AWL7038
4 Door Hinge L See Contrast table (2) 29 FL Sheet D10 AAK7629
5 Door Hinge R See Contrast table (2) 30 Volume Knob See Contrast table (2)
(MASTER VOLUME)
NSP 6 Magnet Angle ANG7241
7 Door Panel See Contrast table (2) 31 Rotary Knob See Contrast table (2)
8 ····· (INPUT SELECTOR)
9 ····· 32 Screw ABA7053
10 Door Sheet See Contrast table (2) 33 Screw PBA1096
34 Screw BBZ30P060FCC
11 Display Panel See Contrast table (2) 35 Screw BPZ30P080FMC
12 ·····
13 Power Button (STANDBY/ON) See Contrast table (2) 36 Screw See Contrast table (2)
14 MR Button (MULTIROOM) See Contrast table (2) NSP 37 Cord with Plug ADH7020
15 Lead Card 32P (J11) ADD7159 38 Panel Base See Contrast table (2)
39 Magnet AMF7002
16 Lead Card 05P (J14) ADD7162 40 Cord Clamper RNH-184
17 Lead Card 06P (J20) ADD7167
18 ····· 41 P-SW Assy AWX7330
19 Lead Card 12P (J21) ADD7166 42 Power Button MG See Contrast table (2)
20 Damper Assy (60) AXA7076 43 Screw See Contrast table (2)
44 GND Spring ABH7172
21 Sub Panel See Contrast table (2) 45 Screw 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)
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
/HY/EW /HY/GR /HV -G/HY
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
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
CN1352 C D
B 1 4 4 IC101
CN1001 IC351
CN1001
14
Y
4 IC103
IC9203
C
B 3
6
15 3 1
CN104 16
1
IC9201
IC9202
16
CN9801
11 9
12
3 2
R CN7201 CN906
10
5 9 IC9321
IC9101
26
IC9151
IC9601
4
16 C 2
17
B 18 CN9801 8
IC9071 6
CN1001
IC9411 IC9421 IC9401
CN5006 3 5 6 8
DSP+5V
AD+5V
A+15V
A-15V
3 3
5 5
W 7 7
M
9 9
11 11 CN1302
CN1201 CN9803 9, 8
CN1250 CN9804 IC1301
X 2 2
C 7, 2
IC1303
5, 8 4, 1 3, 4
4, 3 5, 6 IC1302
1, 2 7, 8
CN1301
A CN1101
CN702
R CN7201 CN701
3
2
5
4 IC701
V 7
1 15
5 1 V
2 V 3
9 15 13
IC701
13 IC751
11
15
P
V 13
14
12
IC701
10
VSX-908RDS, VSX-908RDS-G
T+12V
: AUDIO SIGNAL ROUTE IC5003
V A+15V ST S6001
: VIDEO SIGNAL ROUTE U+5.6V IC5001 DSP D5009 +5V
IC5007 A-15V +5V IC6001
Y
: Y SIGNAL ROUTE AD+5V IC5002 IC5008
C
M IC5004 D5001D5004 D6001-D6004 T6001
: C SIGNAL ROUTE V+5.6V RY6001
V+5.6V
V-5.6V
A+15V
T+12V
A-15V
IC5005 D5005D5008
V-5.6V AC IN
IC5006
CN5003 4 5 6 8 9 VH+
M VH-
Q4501
Q4502
D4501D4504
T1
POWER V
VL+ TRANSFORMER
D J VL- D3001D3002
CN3003
OTHERS
IC108
6
CN501
4 Y6 Y7