Pioneer VSX-108 Service manual
AUDIO MULTI - CHANNEL RECEIVER
VSX-108
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
KUXCN AC120V
Model
VSX-108
Power Requirement Remarks
ORDER NO.
RRV2146
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
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
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22
24
2
3
6
7. GENERAL INFORMATION
7.1 PARTS
7.1.1 IC
7.1.2 DISPLAY
8. PANEL FACILITIES AND SPECIFICATIONS
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T – IZE OCT. 1999 Printed in Japan
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26
26
26
33
35
VSX-108
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 (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
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)
Leakage
current
tester
Test all
exposed metal
surfaces
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
2. EXPLODED VIEWS AND PARTS LIST
NOTES:• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
2.1 PACKING
11
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.
•
PACKING PARTS LIST
•
Mark No. Description Part No.
VSX-108
2
9
1
3
13
5
10
8
4
12
7
6
NSP 11 RCA Cable • • • • •
NSP 12 Dry Cell Battery (LR6, AA) • • • • •
NSP 13 Warranty Card • • • • •
1 AM Loop Antenna 01582100001S
2 FM Antenna 06410001003S
3 Operating Instructions 152010801297
(English)
4 Polyform L 14901081000S
5 Polyform R 14901082000S
6 Remote Control Unit 18201080001S
7 Carton Box 153010820297
8 Poly. Bag (4 × 20) 15004011210S
9 Poly. Bag (10 × 15) 15010015510S
10 Poly. Bag (20 × 26) 15020026510S
3
VSX-108
2.2 EXTERIOR
23
25
9
24
25
25
25
33
31
4
29
25
20
3
25
A
25
32
25
27
28
28
5
2
34
25
28
25
25
30
26
21
25
25
25
25
26
26
26
25
1
25
25
25
13
25
15
25
25
19
18
25
17
25
A
25
25
25
19
19
22
25
22
25
12
10
14
Bottom Cover
7
25
6
11
25
4
EXTERIOR PARTS LIST
•
Mark No. Description Part No.
NSP 1 TUNER PCB AZW7259
NSP 2 MAIN PCB AZW7259
NSP 3 PHONE PCB AZW7259
(Circuit Parts Assy)
(Circuit Parts Assy)
(Circuit Parts Assy)
VSX-108
NSP 4 AC O/P PCB AZW7259
NSP 5 AC I/P PCB AZW7259
NSP 6 PW SW PCB AZW7259
NSP 7 DISPLAY PCB AZW7259
29 Power transformar (AC120V) 01801088522S
30 AC Power Cord 02360040009S
(Circuit Parts Assy)
(Circuit Parts Assy)
(Circuit Parts Assy)
(Circuit Parts Assy)
8 • • • • •
9 AC Cord Stopper 13000000001S
10 Display Lens 11701080101S
11 Volume Knob 12701081010S
12 Front Panel 10801080010S
13 Front Cabinet 10101080001AS
14 Power Button 12801080001S
15 Function Button 12801082001S
16 • • • • •
17 Mounting Bracket A 12901089000S
18 Mounting Bracket B 12901089100S
19 PCB Holder 13001082000S
20 Mounting Holder 13301082310S
21 PCB Mounting Bracket 13301083310S
22 Insullator 13821007010S
23 Top Cover 18001083010S
24 Rear Cover 18001085101S
25 Screw BBZ30P080FZK
26 Screw BBZ30P100FZK
27 Screw FBT40P080FZK
28 Screw 14453016202S
31 Fuse (F801 : 4A/250V) 05005020402S
NSP 32 Metal Washer • • • • •
NSP 33 PCB Mounting Bracket • • • • •
NSP 34 Heatsink Mounting Bracket • • • • •
5
1
23
VSX-108
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM, OVERALL WIRING DIAGRAM, AC O/P, AC I/P
A
B
and PW SW PCBS
A
FM
ANTENNA
AM
ANTENNA
FM
AM
CN708A
GND
CN708
IC101
1
LA1186N
FM FRONT END
8
Q102
FM SIG
TUNER PCB
FM
9
1 21 2 3 4 5 6 7 8 9 10
– FM
IF REQ.
10 91 2 8 7 6 5 4 3 2 1
– AM
MONO
SD
1
00201838-040
ELECTRIC
27
EO
ST. IND
IC102
(LA1838)
TUNING
30
AM SIG.
GND
16
17
CN701A
AM/FM IF
CN701
CN102
TUNER
1
2
3
4
5
TUNER-R
GND
TUNER-L
+5V
+9V
CD
TV
IC203
CN201
1
2
TUNER
3
4
5
L
R
00262419-010
(M62419)
Digital Sound Controller
36
L
R
7
34
L
R
9
35
L
SELECTOR
R
8
33
L
SEL
R
10
OUT
L
1 40 3
R
L
R
26 17
L
TONE
OUT
TONE
VR
L
39 4
4
R
FADER
R
L
23 20
R
L
VCR
R
IN
75
FM IN AM IN
74
CN702
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
9
DATA
50
IC701
00272358-040
(LC72358N)
Control µ-Com.
C
KEY SW
DATA
6
IC702
00202879-040
(BU2879AK)
FL Driver IC
V1
FL TUBE
04991693-001
D
DATA
MUTE
RELAY
REMOTE
312
12
06104421-000
IR Receiver
53
17
Q703,
Q704
IC703
VCR
OUT
DATA
CLK
E1
DATA
CLK
E2
DGND
MUTE
OVER
SP.OFF
RELAY
2-CH
DC/O
AC3.8V
AC3.8V
-25V
+5V
GND
SR
GND
CONTROL
OUT
L
R
CN6
1
2
3
4
5
6
7
8
9
10
11
12
13
51
CN7CN707
1
2
3
4
5
6
7
61
62
R
L
IN
IC201
00201041-040
(LV1041M)
Dolby Pro-Logic Decoder
MAIN PCB
B
24 21
L
OUT
B 1/2, B 2/2
R
C
31
CV,
SV
OUT
S
33
DISPLAY PCB
G
6
1234
5
678
VSX-108
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB P ARTS LIST".
• NOTE FOR FUSE REPLACEMENT
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE AND RATINGS ONLY.
: AUDIO SIGNAL ROUTE
PHONE PCB
C
6
7
6
7
Q209-Q211
RY1
RY2
RY3
RY4
RELAY
DRIVER
CN14 CN14A
1
2
GND
3
L-SP
4
R-ST
5
SP-OFF
6
SUB WOOFER
[Jack 5]
L
FRONT
[Jack 6 (1/2)]
R
CENTER
[Jack 6 (2/2)]
SURROUND
[Jack 7]
R
1
L
2
3
4
5
6
PHONES
IC202
00206458-040
(LA6458S)
Dual Operational Amp.
6 8
4
2
Q201-Q204
MUTING
CAUTION -
IC204
STK407-070
2ch AF Power Amp.
10
14
10
14
IC205
STK407-070
2ch AF Power Amp.
A
B
AC
3.8V
+5V
+9V
+B
–B
–25V
–9V
Q802
REG.
Q803
REG.
Q801
REG.
Q804
REG.
C
D802
D803
CN207
1
2
3
4
5
CN208
1
2
3
1.9V
CT
1.9V
16.5V
CN207A
1
2
3
4
5
J6
J5
J7
D
T1
POWER
TRANSFORMER
01801088522S
PW SW PCB
F
02041100-004
PS1
POWER
W1 W2
C823
0.01/250V
AC I/P PCB
E
R821
120/1W
05005020402S
F801
4A/250V
W3
W4
R820
3M3
AC POWER CORD
02360040009S
LIVE
AC120V
60Hz
NEUTRAL
D
AC O/P PCB
FED
5
6
7
8
7
1
VSX-108
3.2 TUNER PCB
A
TUNER PCB
A
AM
LOOP
ANTENNA
AM
D101
00400321-500
(SVC321)
23
Q101
T101
00300715-041
(2SK715)
AM
AM
D102
00400321-500
(SVC321)
01620360-023
AM
01621032-104
TC101
01410200-003
4
AM
T102
B
Q103
FM
BPS101
02876108-002
FM
IC101
LA1186N
FM
300Ω
FM
L104
L102
01706036-350
D105
SVC201SPA
C
01705037-350
(2SA608)
00300608-045
FM
D106
SVC201SPA
Q102
(2SC2999)
00302999-044
T103
01627539-032
CF101
02810700-009
FM
FM
Q104
00300536-046
(2SC536)
00302999-044
(2SC2999)
Q105
(2SC2999)
00302999-044
Q107
CF102
02810700-009
FM
Q106
00302999-044
(2SC2999)
FM
IC101
(volt)
123456789
AM 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
D
8
A
FM 0.9 1.5 4.8 0.0 0.0 4.8 0.0 4.0 4.8
1234
AM
L101
01500393-001
5
678
VSX-108
A
T
: TUNER AUDIO SIGNAL ROUTE (L ch)
AM
: AM SIGNAL ROUTE
FM
: FM SIGNAL ROUTE
T
AM
T
B
FM
T104
01627580-041
IC102
00201838-040
(LA1838)
CF103
02800450-000
GM74A
02810700-025
CN102
T
02520005-205
CN701A
02520012-202
B
G
CN201
C
CN701
T
IC102
123456789
AM 3.8 13.0 3.8 3.8 0.0 5.1 5.1 13.0 2.3
FM 3.8 13.0 3.8 3.8 0.0 4.9 4.9 13.0 2.3
16 17 18 19 20 21 22 23 24
AM 4.5 4.5 4.5 4.5 3.5 3.5 2.8 0.0 0.6
FM 4.5 4.5 4.5 4.5 3.5 3.5 2.8 3.0 0.0
5
6
10 11
1.6 0.0
1.6 0.4
25 26
0.5 3.8
0.0 4.2
12 13
0.0 0.0
0.0 0.0
27 28
3.8 3.8
4.0 3.8
7
(volt)
14 15
8.0 12.0
12.0 12.0
29 30
3.8 2.0
3.8 2.2
CN708A
G
A
8
CN708
D
9
1
VSX-108
3.3 MAIN PCB (1/2)
23
4
B 1/2
A
B
JACK4
JACK3
JACK2
IN
VCR
OUT
T
00262419-010
MAIN PCB
IC203
(M62419)
A
T
CN102
CN201
JACK1
05208000-000
C
IC201
00201041-040
(LV1041M)
D
S
C
10
1/2
B
1234
CN6
G
CN702
5
678
VSX-108
CN7
G
CN707
Q213
Q204
00303576-040
B
2/2
00310536-046
IC204
STK407-070
Q212
00310536-046
L201
01500030-006
Q205
C
RLGND
CN14A
L-SP
R-ST
SP-OFF
A
CN14
B
L202
Q203
00302576-040
01500030-006
Q206
C
JACK6
04610400-006
FRONT
CENTER
L203
01500030-006
C
Q202
00302576-040
S
S
C
C
Q207
C
C
JACK7
04620800-001
C
L204
S S
IC205
S S S
01500030-006
STK407-070
Q201
S
C
C
00302576-040
Q208
D211
00494001-300
SURROUND
D212
00494001-300
C
IC202
00206458-040
(LA6458S)
5
T
: TUNER AUDIO SIGNAL ROUTE (L ch)
: AUDIO SIGNAL ROUTE (L ch)
C
: AUDIO SIGNAL ROUTE (Center)
S
: AUDIO SIGNAL ROUTE (Surround)
6
Q205-Q211 :
00310536-046
D209
00494001-300
Q211
Q210
: The power supply is shown with the marked box.
1/2
B
7
8
Q209
D
11
1
23
VSX-108
3.4 MAIN (2/2) and PHONE PCBS
4
A
B
B 2/2
MAIN PCB
: The power supply is shown with the marked box.
1/2
B
C
D
12
2/2
B
1234
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