Pioneer VSX 108 Support Question
Pioneer VSX 108 Support Question
Find answers below for this question about Pioneer VSX 108 - AV Receiver.Need a Pioneer VSX 108 manual? We have 1 online manual for this item!
Question posted by wjg4 on September 5th, 2017
Sound Failure On Vsx-108.
The sound on the "TV" setting has failed. The other functions work (FM, AM, VCR). Is there a fuse or something to repair it, and how is it done?
Current Answers
Answer #1: Posted by waelsaidani1 on September 6th, 2017 10:58 AM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,777
Member since:
May 12th, 2013 Points: 19,501,777
Make sure the correct input function is selected.
R26; Check that the MCACC setup microphone is disconnected.
R26; Make sure the correct input signal is selected (press SIGNAL SEL). Note that
when PCM is selected, you won't be able to hear any other signal format.
R26; Check that the source component is connected properly (see Connecting
your equipment on page 14).
R26; Check that the speakers are connected properly (see Connecting the speakers
on page 18).
Related Pioneer VSX 108 Manual Pages
Service Manual - Page 1
.... 253 Alexandra Road, #04-01, Singapore 159936
c PIONEER CORPORATION 1999
T - Type
Model VSX-108
Power Requirement
Remarks
KUXCN
AC120V
CONTENTS
1. PCB CONNECTION DIAGRAM 17 5. GENERAL INFORMATION 26 7.1 PARTS ...
7. Box 1760, Long Beach, CA 90801-1760, U.S.A. CHANNEL RECEIVER
VSX-108
ORDER NO. AUDIO MULTI - RRV2146
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
PCB...
Service Manual - Page 2
... metal overlays, control shaft, etc.). VSX-108
1. Replacement parts which does not have been trained to do -ityourselfer. Improperly performed repairs can adversely affect the safety and reliability...special safety related characteristics. Proposition 65
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols
(fast operating fuse) and/or
be performed for voltage, wattage, etc. LEAKAGE CURRENT...
Service Manual - Page 3
...used for disassembly.
2.1 PACKING
11 2
9 1
3
13 8 10
4
5
6
12
• PACKING PARTS LIST
Mark No. VSX-108
2. Bag (4 × 20) 9 Poly.
Therefore, when replacing, be sure to use parts of identical designation.
• Screws ...the part. Description
1 AM Loop Antenna 2 FM Antenna 3 Operating Instructions
(English) 4 Polyform L
5 Polyform R 6 Remote Control Unit 7 Carton Box
8 Poly.
Service Manual - Page 5
... Lens
AZW7259
13000000001S 11701080101S
11 Volume Knob 12 Front Panel 13 Front Cabinet 14 Power Button 15 Function Button
12701081010S 10801080010S 10101080001AS 12801080001S 12801082001S
16 17 Mounting Bracket A 18 Mounting Bracket B 19 PCB...Cord
02360040009S
NSP NSP NSP
31 Fuse (F801 : 4A/250V) 32 Metal Washer 33 PCB Mounting Bracket 34 Heatsink Mounting Bracket
05005020402S
VSX-108
5
Service Manual - Page 6
.../FM IF
12
10 9 8 7 6 5 4 3 2 1
L
B
CN708
CN701
TV R
L VCR IN R
75 FM IN
74 AM IN
L VCR OUT R
61 62
24 21
DATA 9
DATA 50 IC701 00272358-040 (LC72358N) Control µ-Com. MONO
-
1
2
3
4
VSX-108
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM, OVERALL WIRING DIAGRAM, AC O/P, AC I/P
A
and PW SW PCBS
FM ANTENNA
AM ANTENNA
A TUNER PCB
CN102 1
FM 1
IC101
FM...
Service Manual - Page 7
Q804 REG.
5
6
7
8
VSX-108
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". REPLACE WITH SAME TYPE AND RATINGS ONLY.
: AUDIO SIGNAL ROUTE
IC204 STK407-070 2ch AF Power Amp. A
• NOTE FOR FUSE REPLACEMENT
CAUTION -FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. Q209...
Service Manual - Page 10
1
2
VSX-108
3.3 MAIN PCB (1/2)
A JACK4
JACK3
JACK2 IN
B
3
4
B 1/2 MAIN PCB
A CN102
CN201
T
IC203 00262419-010
(M62419)
VCR
T
OUT JACK1
C
05208000-000
IC201
00201041-040
S
(LV1041M)
C
D
10 B 1/2
1
2
3
4
Service Manual - Page 11
B 1/2 11
5
6
7
8
5
G CN702
CN6
6
B 2/2
7
8
VSX-108
CN7
G CN707
Q213 00310536-046
C CN14A
A
Q212
00310536-046
R L GND L-SP R-ST SP-OFF
CN14
S
S C
C
Q203 00302576-040
Q204 00303576-040
IC204 STK407-070
L201 ...
Service Manual - Page 12
1
2
3
4
VSX-108
3.4 MAIN (2/2) and PHONE PCBS
A
B 2/2 MAIN PCB
: The power supply is shown with the marked box.
B
B 1/2
C
D
12 B 2/2
1
2
3
4
Service Manual - Page 15
... : TEST MODE SW5 : CENTER/REAR SW10 : (DOLBY PRO LOGIC) SW11 : SFC MODE SW12 : LEVEL + SW13 : TV
SW14 : CD SW15 : AM SW16 : VCR SW17 : STEREO SW18 : LOUDNESS SW19 : STATION + SW20 : TUNING + SW21 : FM SW22 : BASS +
SW23 : TREBLE + SW26 : STATION SW27 : TUNING SW29 : BASS SW30 : TREBLE SW31 : BALANCE L SW32 : BALANCE R
8
VSX-108
A
B 1/2
CN7
B 1/2
CN6
B
A CN701A
A CN708A
C
D
G 15
5
6
7
8
Service Manual - Page 17
1
2
3
4
VSX-108
4.
The parts mounted on this PCB include all necessary parts for respective destinations, be sure to check with resistor
DGS
D G SD G S
Field effect transistor
A TUNER ...
Service Manual - Page 18
1
2
3
4
VSX-108
4.2 MAIN and PHONE PCBS
B MAIN PCB
A
Q212 Q213
Q209 Q211 IC208
Q203 Q204 IC203
IC204
B
Q205 Q206
IC201
Q201 Q202
IC205
C
IC202
Q208 Q207
Q402 Q401
Q801 Q804
D
B 18 1
J7 J5 J6
D
D CN207A
2
3
4
Service Manual - Page 21
...
5
6
7
C
A
CN708A
A
CN701A D
G 21
8
5
6
7
8
VSX-108
A
08 07
B
B CN7 B CN6
AC1.9V AC1.9V -25V +5V GND... J710 J711
J755
CN706 C726
C741
J745 J746
R721 J753 J740
R703 R704 R705 J744
L701
VCR
SW16
R711
C714
CN707 C732
LED701 LED702
R712 LED703
R713
Q711 Q712
Q713
D701
Q714
DOLBY
...R708 J750
C709
C708 Q702
J754 FM-S
Q701
GND
CN708 CN701
IF GND AO EO ST SD
AMGND MONO IF REQ...
Service Manual - Page 22
...TUNER PCB MAIN PCB PHONE PCB AC O/P PCB AC I/P PCB PW SW PCB DISPLAY PCB
Part No. VSX-108
Mark No. MTZJ13B MTZJ4.7B MTZJ6.8B SVC201SPA
SWITCHES AND RELAYS
S1,S10-S19,S2 S20-S23,S26,...06500224-002
COILS
L202-L204 L701 L101 L102 L104
CHOKE COIL CHOKE COIL (1MHz) BIAS TRAP COIL FM COIL FM COIL
01500030-006 01500102-001 01500393-001 01705037-350 01706036-350
L201 F103 F101,F102 F104 F1010
...
Service Manual - Page 23
...
CEAT102M10 CEAT1R0M50 CEAT220M50 CEAT221M10 CEAT222M25
CEAT2R2M50 CEAT330M16 CEAT3R3M50 CEAT470M10 CEAT470M10
CEAT470M25 CEAT470M35 CEAT471M10 CEAT4R7M50 CEAT4R7M50
CEAT4R7M50 CEAT4R7M50 CEAT4R7M50 CEATR33M50 CEATR47M50
CEATR47M50 01410200-003
VSX-108
Mark No.
Description
Part No. RESISTORS
R278,R279,R287,R289,R803
00510101-321
(10Ω, 2W)
R808 (2.2kΩ, 1W)
00510222-311
R805...
Service Manual - Page 24
VSX-108
6. ADJUSTMENT
6.1 TUNER SECTION
6.1.1 AM IF ADJUSTMENT
Fig.1
6.1.2 FM IF ADJUSTMENT
Fig.2
6.1.3 TUNING FREQUENCY RANGE ADJUSTMENTS
(FM, AM) DC Voltmeter.........Connect to TP1 and GND
Fig.3
24
Service Manual - Page 27
...
VEE
VIN2
VIN2
VOUT2
VCC
27
Function
1 FM IF input
2 AM MIX output
3 FM IF input by-pass
4 AM IF ...FM S-meter output
12 AM S-meter output and AM SD sensitivity adjustment
13 AM/FM IF buffer output and output control SW (mute SW)
14 Phase comparator Low-pass filter (Switch the FM/AM)
15 Pilot detector Low-pass filter (Forced monoral)(VCO stop)
No. VSX-108
• Pin Function...
Service Manual - Page 29
VSX-108
STK407-070 (MAIN PCB : IC204, IC205)
• 2-Channel AF Power Amplifier IC
• Block Diagram
Ch. 1 OUT
...TR22
TR24 R19
TR19
R17
R16 TR17
R12
PT1
1
Ch. 2 -Vcc
45
00262419-010 (M62419FP) (MAIN PCB : IC203)
• Digital Sound Controller with Tone Control IC
• Block Diagram
CLOCK VDD SELECT OUT2 VCL IN2 LOUD IN2 SELECT NF2 SELECT2 INA SELECT2 INB SELECT2 INC SELECT2...
Service Manual - Page 35
... "DOLBY PRO LOGIC", SFC, LOUDNESS 8 STEREO button Use to playback sound that DOLBY PRO LOGIC and SFC MODE turn off. 9 DOLBY PRO ...FUNCTION buttons ^ TONE [BASS (+, -), TREBLE (+,-)] LEVEL button Use to adjust tone level. & BALANCE (L, R) button Use to switch the auto stereo/monaural mode for receiving FM broadcasts. PANEL FACILITIES AND SPECIFICATIONS
8.1 PANEL FACILITIES
Front Panel
VSX-108...
Service Manual - Page 38
... to set to the TUNER.
3 PRO LOGIC button Use to change the mode of DOLBY PRO LOGIC.
4 SURROUND button Press to start the SURROUND function.
5 PRESET button To preset other devices, press any one of these buttons to specify the device to mute the volume.
- CENTER MODE: Switches the center mode. TV CD FM
VCR...
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