Pioneer VSX-C300 Service Manual
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
STANDBY
PHONES VIDEO AUDIO DIGITAL IN
FRONT INPUT
INPUT SIGNAL
DIGITAL
2
DIGITAL2PROLOGIC DTS MPEG
VIRTUAL
PHONES SURR.
STEREO
AUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-C300
DVD TV/SAT VCR FRONTTUNER
MASTER
VOLUME
DOWN UP
MULTI ch
LR
OFF ON
VSX-C300
VSX-C300-S
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
HYXJI AC220-230V
HVXJI AC230V
VSX-C300 VSX-C300-S
Model
Power Requirement Remarks
ORDER NO.
RRV2506
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 EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
c
PIONEER CORPORATION 2001
......................................
.........................
...............
.....
32
46
50
2
3
8
7. GENERAL INFORMATION
7.1 DIAGNOSIS
7.1.1 Test Mode
7.1.2 Protection of the Amplifier Line
7.1.3 Operation of the Fan-Control Line
7.1.4 Specifications of Speaker Detection
7.1.5 Timing Chart
7.2 PARTS
7.2.1 IC
..........................................................
............................................................
7.2.2 DISPLAY
8. PANEL FACILITIES AND SPECIFICATIONS
................................
..................................................
................................................
...............
...........
........
............................................
.................................................
.......
T – ZZR AUG. 2001 Printed in Japan
51
51
51
52
53
54
55
56
56
62
64
VSX-C300, VSX-C300-S
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.
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.
Health & Safety Code Section 25249.6 – Proposition 65
(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)
Test all
exposed metal
surfaces
Leakage
current
tester
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
VSX-C300, VSX-C300-S
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
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.
•
1
2
4
12
HYXJI Type
13
19
7
Only
HYXJI Type Only
3
18
5
6
8
18
11
3
10
HYXJI Type Only
14
HYXJI Type Only
15
16
17
18
9
18
(1) PACKING PARTS LIST
Mark No. Description Part No.
1 FM Wire Antenna ADH7005
2 AM Loop Antenna ATB7009
NSP 3 Polyethylene Bag Z21-038
(0.03 × 230 × 340)
NSP 4 Warranty Card ARY7022
5 Remote Control Unit AXD7311
6 Battery Cover AZA7378
NSP 7 Dry Cell Battery (R6P, AA) VEM-013
8 Pulp Left Pad AHA7364
9 Pulp Right Pad AHA7365
10 Packing Sheet AHG7084
11 Packing Case See Contrast table (2)
12 Operating Instructions ARB7247
(English)
13 Operating Instructions See Contrast table (2)
(German)
14 Operating Instructions See Contrast table (2)
(French/Italian)
15 Operating Instructions See Contrast table (2)
(Dutch/Swedish)
16 Operating Instructions See Contrast table (2)
(Spanish/Portuguese)
17 AC Power Cord See Contrast table (2)
18 L Spacer AHB7054
19 Cable Label ARW7145
(2) CONTRAST TABLE
VSX-C300/HYXJI, HVXJI, VSX-C300-S/HYXJI and HVXJI are constructed the same except for the following:
Part No.
Mark
No. VSX-C300 VSX-C300-S
Symbol and Description
/HYXJI /HVXJI /HYXJI /HVXJI
11 Packing Case AHD8009 AHD8009 AHD8008 AHD8008
13 Operating Instructions (German) ARC7342 Not used ARC7342 Not used
14 Operating Instructions (French/Italian) ARE7281 Not used ARC7281 Not used
15 Operating Instructions (Dutch/Swedish) ARE7282 Not used ARE7282 Not used
16 Operating Instructions (Spanish/Portuguese) ARE7283 Not used ARE7283 Not used
17 AC Power Cord ADG1154 ADG1156 ADG1154 ADG1156
Remarks
3
VSX-C300, VSX-C300-S
2.2 EXTERIOR SECTION
25
38
50
17
36
G
43
B
36
43
L
39
8
M
46
36
G
F
39
10
B
15
C
6
A
36
45
45
45
E
36
I
36
7
36
36
D
5
19
50
14
C
11
3
33
F
43
J
A
16
33
36
26
38
H
36
D
36
36
13
28
48
47
36
36
24
29
H
27
E
22
12
36
29
I
C
2
37
A
42
44
4
B
36
41
34
1
40
Refer to
"2.3 FRONT PANEL SECTION".
4
30
36
49
45
D
E
22
36
21
31
36
36
23
32
20
18
VSX-C300, VSX-C300-S
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 DSP ASSY AWX7930
2 2P - JACK ASSY AWX7926
3 POWER ASSY AWX7909
4 VIDEO ASSY AWX7928
5 OPT - IN ASSY AWX7908
6 TRANS 2 Assy AWX7907
7 FM/AM TUNER MODULE AXQ7232
NSP 8 TRANS 1 Assy AWX7906
9 • • • • •
10 Power Transformer (AC230V) ATS7316
11 Fuse (FU1 : T1.25A) REK1023
12 FFC (J804 : 13P/180 BD 60V) ADD7242
(DSP CN803
↔ TUNER CN201)
13 FFC (J1702 : 23P/180 BD 60V) ADD7293
(DSP CN1702
↔ FRONT CN4202)
14 FFC (J4201 : 23P/200 BD 60V) ADD7293
(POWER CN303
↔ FRONT CN4201)
15 FFC (J4101 : 11P/100 BD 60V) ADD7336
(POWER CN304
↔ FRONT INPUT CN4101)
16 Thermistor AEX7004
(POWER CN306 ↔ TH9014)
17 Trans Shield Barrier AEC7389
18 REG. Cover AEC7384
19 Tuner Barrier AEC7383
20 Leg Assy REC-434
(DSP CN804 ↔ FRONT CN203)
NSP 23 Under Base ANA7129
NSP 28 Heat Sink HL ANH7144
NSP 30 Trans Stabilizer ANG7362
21 Insulator 50 AMR7363
22 FFC (J803 : 7P/150 BD 60V) ADD7292
24 Rear Panel See Contrast table (2)
25 Bonnet Case (Box) See Contrast table (2)
26 PCB Support AEC7365
27 DC Fan Motor AXM7017
29 Damper BK AEB7231
31 Rubber Cushion AEB7235
32 Insulator 50 Assy AMR7379
33 Screw With Washier ABA7080
34 PCB Mold AMR2534
35 • • • • •
36 Screw BBZ30P080FZK
37 Screw BBZ30P140FMC
38 Screw See Contrast table (2)
39 Screw BBZ40P060FCC
40 Front Panel Assy See Contrast table (2)
41 Dolby DTS. Label ARW7136
42 Speaker Label E AAX7870
43 Binder ZCA–BK1
44 Screw (3x11.5) ABA7071
45 Screw See Contrast table (2)
46 Cord Clamper RNH-184
47 Cushion H11 AEB7239
48 Damper Coshion AED7055
49 Cushion Circle 16 See Contrast table (2)
50 Rubber Cushion AEB7235
(2) CONTRAST TABLE
VSX-C300/HYXJI, HVXJI, VSX-C300-S/HYXJI and HVXJI are constructed the same except for the following:
Part No.
Mark
No. VSX-C300 VSX-C300-S
Symbol and Description
/HYXJI /HVXJI /HYXJI /HVXJI
24 Rear Panel ANC8011 ANC8050 ANC8012 ANC8015
25 Bonnet Case (Box) AZN7887 AZN7887 AZN7886 AZN7886
38 Screw BBZ40P080FZK BBZ40P080FZK BBZ40P080FNI BBZ40P080FNI
40 Front Panel Assy AMB7768 AMB7768 AMB7777 AMB7777
45 Screw BBZ30P080FZK BBZ30P080FZK BBZ30P080FNI BBZ30P080FNI
49 Cushion Circle AED7052 AED7052 AED7054 AED7054
Remarks
5
VSX-C300, VSX-C300-S
2.3 FRONT PANEL SECTION
16
2
17
K
13
10
F
17
20
5
16
H
16
4
16
1
15
11
9
18
8
G
23
7
16
16
3
I
6
22
14
21
12
6
(1) FRONT PANEL SECTION PARTS LIST
Mark No. Description Part No.
1 FRONT ASSY AWX7931
2 POWER SW ASSY AWX7904
3 ENCODER ASSY AWX7914
NSP 4 LED ASSY AWX7913
5 FRONT INPUT ASSY AWX7916
6 Front Panel Assy See Contrast table (2)
7 Function Button See Contrast table (2)
8 FFC (J1702 : 23P ADD7293
Front CN4202 ÔDSP CN1702)
9 Name Plate See Contrast table (2)
10 Standby Lens AAK7902
11 LED Lens AAK7903
12 Volume Knob Assy See Contrast table (2)
13 Power Button See Contrast table (2)
14 Volume Cap See Contrast table (2)
15 FFC (J4201 : 23P ADD7293
Front CN4201ÔPower CN303)
VSX-C300, VSX-C300-S
16 Screw BPZ30P080FMC
17 Screw (FE) ABA7009
18 Display Panel AAK7904
19 • • • •
20 FFC (J4101 : 11P ADD7336
Front input CN4101ÔPower CN304)
21 Volume Mold AAC7033
22 Front Panel See Contrast table (2)
23 FFC (J803 : 7P ADD7292
Front CN4203ÔDSP CN804)
(2) CONTRAST TABLE
VSX-C300/HYXJI, HVXJI, VSX-C300-S/HYXJI and HVXJI are constructed the same except for the following:
Part No.
Mark Remarks
No. VSX-C300 VSX-C300-S
Symbol and Description
/HYXJI /HVXJI /HYXJI /HVXJI
6 Front Panel Assy AMB7768 AMB7768 AMB7777 AMB7777
7 Function Botton AAD7631 AAD7631 AAD7633 AAD7633
9 Name Plate VAM1109 VAM1109 VAM1129 VAM1129
12 Volume Knob Assy AAB7237 AAB7237 AAB7239 AAB7239
13 Power Button AAD7628 AAD7628 AAD7630 AAD7630
14 VOLUME Cap AAC7030 AAC7030 AAC7032 AAC7032
22 Front Panel AMB7759 AMB7759 AMB7775 AMB7775
7
1
23
VSX-C300, VSX-C300-S
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
FM/AM TUNER
A
MODULE
BN201
CN4101
7
7
IC701
TC9164AF
CN1501
CN304
AUDIO FUNCTION
SELECTOR
CN301
IC702
UPC4570G2
IC703
NJM2100M
DSP ASSY
B
CN201
CN803
B
FRONT INPUT
F
ASSY (1/3)
IC802
AK4527BVQ
CODEC
4
IC1301-IC1303
NJM4558MD
LPF & 6dB AMP.
2P JACK
C
ASSY
CN2201 CN701
CN901 CN801
C
FRONT INPUT
F
ASSY (2/3)
POWER
J
ASSY (2/3)
POWER
J
ASSY (1/3)
11
OPT-IN ASSY
D
DIR & A/D SELECTOR
ROM for DECODE
VIDEO FUNCTION
IC801
AK4112AVF
IC1104
PDN031D
IC3201
NJM2296M
SELECTOR
IC1106
CS493292
DSP for DECODE
TC74VHC574F
TC74VHC574F
8 → 16 bit
CONVERTER
VIDEO ASSY
E
IC1101
IC1102
IC1202
TC74VHCT244AFT
3 → 5V
CONVERTER
IC1201
AK7706VT
DSP for DELAY
IC1203
TC551001CFT-70
RAM for DELAY
D
8
1234
IC1401
TC9164AF
SP Config.
5
IC1306, IC1402-IC1405
NJM4558MD
MIX AMP. LPF
678
VSX-C300, VSX-C300-S
A
FRONT INPUT
F
ASSY (3/3)
PHONES
IC1502-IC1504
UPC4570G2
PRE-AMP.
B
POWER ASSY (3/3)
J
IC1501
M62446FP
ELECTRIC VOLUME
C
D
9
5
6
7
8
1
VSX-C300, VSX-C300-S
3.2 OVERALL WIRING DIAGRAM
A
POWER CORD
HYXJI : ADG1154
HVXJI : ADG1156
23
DC FAN MOTOR
: AXM7017
4
B
M
POWER TRANSFORMER
L
TRANS 2
C
ASSY
(AWX7907)
TRANS 1
ASSY
(AWX7906)
T1
: ATS7316
J
J 1/2, J 2/2
POWER ASSY
(AWX7909)
H
LED ASSY
(AWX7913)
D
SW ASSY
K
(AWX7904)
FRONT INPUT
F
ASSY
(AWX7916)
G
FRONT ASSY
(AWX7931)
10
1234
5
678
VSX-C300, VSX-C300-S
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PAR TS LIST" or "PCB PARTS LIST".
TH9014
THERMISTOR
: AEX7004
VIDEO ASSY
E
(AWX7928)
B
B 1/5- B 5/5
DSP ASSY (AWX7930)
CN201
FM/AM TUNER MODULE
A
(AXQ7232)
OPT-IN ASSY
D
(AWX7908)
SUPPORT
A
B
ASSY
2P JACK ASSY
C
(AWX7926)
ENCODER
I
ASSY
(AWX7914)
C
D
11
5
6
7
8
1
VSX-C300, VSX-C300-S
3.3 FM/AM TUNER MODULE
A
FM/AM TUNER MODULE (AXQ7232)
A
FM FRONT END
L1
23
4
B
(FM)
(FM)
(FM) (FM)
(AM) (AM)
MW RF TUNING BLOCK
(AM)
(FM)
(AM)
C
(AM)
OSC : 981 - 2052kHz 9k step
(FM)
(FM)
(FM)
(FM) (FM)
(AM)
D
12
A
1234
5
678
VSX-C300, VSX-C300-S
A
: The power supply is shown with the marked box.
(TX)
: AUDIO SIGNAL ROUTE (TUNER)
(AM)
: AM SIGNAL ROUTE
(FM)
: FM SIGNAL ROUTE
(AM)
(FM)
(AM)
(AM)
(AM)
(AM)
(FM)
(AM)
(AM)
(FM)
(AM)
L201
ATE7003
(TX)
(AM)
(FM)
(TX)
(TX)
(TX)
B
CN803
(TX)
B 1/5
C
D
A
5
6
7
8
13
1
23
VSX-C300, VSX-C300-S
3.4 DSP (1/5) and 2P JACK ASSYS
4
A
B
B 1/5
B
DSP ASSY (AWX7930)
Audio Function
Selector
4/5
E
CN3201
(TX)
(TX)
(TX)
(TX)
(TX)
C
2P JACK ASSY
(AWX7926)
C
B
4/5
B
5/5
D
(D) (D)
D
CN901
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
14
1/5
B
1234
C
(TX)
5
678
VSX-C300, VSX-C300-S
: AUDIO SIGNAL ROUTE
CN201
A
B
4/5
(TX)
(TX)
: AUDIO SIGNAL ROUTE (Tuner)
(D)
: AUDIO SIGNAL ROUTE (Digital)
(FL)
: AUDIO SIGNAL ROUTE (Front L ch)
(RL)
: AUDIO SIGNAL ROUTE (Rear L ch)
(SW)
: AUDIO SIGNAL ROUTE (Sub Woofer)
(C)
: AUDIO SIGNAL ROUTE (Center)
A
B
CN4203
G
DIR & A/D Selector
(RL)
(SW)
(C)
(FL)
B
CODEC
(FL)
1/5
8
B
15
(RL)
(SW)
(C)
B
2/5
B
5
6
7
C
5/5
3/5
D
1
VSX-C300, VSX-C300-S
3.5 DSP ASSY (2/5)
A
23
4
B 2/5
B
DSP ASSY (AWX7930)
DSP for
DECODE
ROM for
DECODE
C
D
16
2/5
B
1234
5
678
VSX-C300, VSX-C300-S
DSP for Delay
: AUDIO SIGNAL ROUTE
RAM for Delay
A
B
3V → 5V Converter
B
1/5
C
B
5/5
D
2/5
B
5
6
7
8
17
1
VSX-C300, VSX-C300-S
3.6 DSP ASSY (3/5)
A
23
4
B 3/5
(FL)
(FL)
(RL)
B
1/5
B
(C)
(SW)
(RL)
(FL)
(FL)
(FL)
(RL)
(RL)
DSP ASSY (AWX7930)
(FL) (FL)
(FL)
(FL)
(RL)
(RL)
SP Config.
C
(C)
(SW)
D
18
3/5
B
1234
(C) (C)
(SW)
(SW)
B
1/5
(RL) (RL)
(SW)
B
5/5
(C)
(SW)
5
678
VSX-C300, VSX-C300-S
(FL)
(FL)
(RL)
(FL)
(RL)
(FL)
: AUDIO SIGNAL ROUTE (Front L ch)
(RL)
: AUDIO SIGNAL ROUTE (Rear L ch)
(SW)
: AUDIO SIGNAL ROUTE (Sub Woofer)
(C)
: AUDIO SIGNAL ROUTE (Center)
(FL)
(RL)
(FL)
(RL)
(SW)
(C)
A
B
B
4/5
(RL)
(SW)
(C)
(RL)
(SW)
(C)
C
(C) (C)
(SW)
(SW)
D
3/5
B
5
6
7
8
19
1
VSX-C300, VSX-C300-S
3.7 DSP ASSY (4/5)
A
23
4
B 4/5
B
B
1/5
(FL)
(RL)
B
3/5
(C)
(SW)
DSP ASSY (AWX7930)
(FL)
(C)
(RL)
(SW)
(FL)
(C)
(RL)
(SW)
(FL)
(RL)
(SW)
(FL)(FL)
(RL)
(C)
(FL)
(RL)
(C)
C
D
Electric Volume
(C)
(SW)
(SW)
B
5/5
20
4/5
B
1234
5
678
VSX-C300, VSX-C300-S
(FL) (FL)
(RL) (RL)
(RL)
(FL)
(FL)
: VIDEO SIGNAL ROUTE
: AUDIO SIGNAL ROUTE
(FL)
: AUDIO SIGNAL ROUTE (Front L ch)
(RL)
: AUDIO SIGNAL ROUTE (Rear L ch)
(SW)
: AUDIO SIGNAL ROUTE (Sub Woofer)
(C)
: AUDIO SIGNAL ROUTE (Center)
(SW)
(FL)
(RL)
(C)
A
B
J 1/2
CN301
(C) (C)
(SW) (SW)
(C)
(SW) (SW)
(C)
(SW)
B
1/5
C
B
5/5
D
4/5
B
5
6
7
8
21
1
VSX-C300, VSX-C300-S
23
4
3.8 DSP (5/5) and OPT-IN ASSYS
A
CN302
B
J 1/2
(D)
B 5/5
DSP ASSY (AWX7930)
B
1/5
B
1/5
C
D
(D)
(D)
: AUDIO SIGNAL ROUTE (Digital)
OPT-IN ASSY (AWX7908)
D
(D)
(D)
(D)
(D)
(D)
(D)
B 1/5
CN801
22
5/5
B
1234
D
5
678
VSX-C300, VSX-C300-S
B
2/5
B
3/5
A
B
B
4/5
: The power supply is shown with the marked box.
B
1/5
G
CN4202
C
D
5/5
B
5
6
7
8
23
1
VSX-C300, VSX-C300-S
3.9 VIDEO ASSY
A
VIDEO ASSY (AWX7928)
E
B
23
: VIDEO SIGNAL ROUTE
4
CN802
B 1/5
C
D
24
E
1234
1
CN304
J 1/2
FRONT INPUT ASSY
(AWX7916)
F
(D)
(D)
(D)
(D)
: AUDIO SIGNAL ROUTE (Digital)
: AUDIO SIGNAL ROUTE
: VIDEO SIGNAL ROUTE
3.10 FRONT INPUT ASSY
234
VSX-C300, VSX-C300-S
A
B
C
D
F
1
2
3
4
25
1
23
VSX-C300, VSX-C300-S
3.11 FRONT, LED and ENCODER ASSYS
FRONT ASSY (AWX7931)
G
A
CN303
J 1/2
B
4
REMOTE
RECEIVER
UNIT
CN1702
B 5/5
C
CN804
B 1/5
D
26
G
1234
5
678
: The power supply is shown with the marked box.
VSX-C300, VSX-C300-S
FRONT ASSY
S4201 : DVD
S4202 : TV / SAT
S4203 : VCR
S4204 : TUNER
S4205 : FRONT
ENCODER ASSY
S4401 : MASTER VOLUM
LED ASSY
H
(AWX7913)
A
B
Q4683
2SC3326
Q4681
2SA1037K
C
ENCODER ASSY
I
D
(AWX7914)
27
IHG
5
6
7
8
1
VSX-C300, VSX-C300-S
3.12 POWER ASSY (1/2)
23
4
J 1/2
POWER ASSY (AWX7909)
A
1SS355
2SC2712
1SS355
2SC2712
(GRBL)
(GRBL)
(FL)
Over Load
Det.
Q305
2SC2712(GRBL)
Over Load
Det.
Q306
2SC2712(GRBL)
Q345
2SC2712(GRBL)
Q346
Q383
Over-Load
Det.
Q384
2SC2412K(QR)
(RL)
Over
Load
Det.
1SS355
Over
Load
Det.
1SS355
(C)
1SS355
0V
CN1501
(C)
(RL)
(FL)
Front Power Amp.
Mute
Q301
2SC3326(AB)
(FL)
0V
0V
27V
(FL)
29V
-29V
0V
0V
0V
-27V
(FL)
1SS355
B 4/5
(FL)
Q407
2SC3326(AB)
(SW)
(SW)
Q408
2SC3326(AB)
(RL)
(C)(C)
B
5V
5V
4.3V
4.3V
2SC3326(AB)
CN4201
G
0V
-12V
-32V
2SC3326(AB)
(C) (C)
Q341
Q342
Q302
2SC3326(AB)
Mute
Rear, Center
Power Amp.
Mute
Mute
(RL)
0V
0V
29V
27V
-29V
(RL)
C
Mute
Q381
2SC3326(AB)
-12V
1SS355
1SS355
FAN Drive
Q402
DTA124EK
5V
Q406
DTA124EK
(FL)
1SS355
(C)
-27V
0V0V0V
0V
(RL)
(C)
(D)
2SA1037K
(D)
0V
Center SP
Det.
Q386
(QR)
1SS355
0V
(C)
1SS355
(RL)
(C)
Q385
2SC2412K
(QR)
(D)
1SS3551SS355
DC Det.
DC FAN MOTORTHERMISTOR
Q404
2SC2712(GRBL)
Q405
DTA124EK
Q403
2SC2712(GRBL)
(D)
D
28
J
1/2
1SS355
CAUTION :
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE NO. 491001 MFD, BY
LITTELFUSE INK. FOR IC302 (AEK7009).
J
2/2
CN1601
B 5/5
(D)
1234
5
: VIDEO SIGNAL ROUTE
(FL)
(RL)
(FL)
(RL)
678
: AUDIO SIGNAL ROUTE
(D)
: AUDIO SIGNAL ROUTE (Digital)
(FL)
: AUDIO SIGNAL ROUTE (Front L ch)
(FL)
(FL)
(RL)
1SS3551SS355
1SS355 1SS355
(FL)
1SS355 1SS355
Q401
DTC143EK
HP RY
Drive
(RL)
: AUDIO SIGNAL ROUTE (Rear L ch)
(SW)
: AUDIO SIGNAL ROUTE (Sub Woofer)
(C)
: AUDIO SIGNAL ROUTE (Center)
(FL) (FL)
(C)
(RL)
(C)
VSX-C300, VSX-C300-S
Voltage Status
• No Loaded
• FAN Stop
• Stereo
SPEAKERS
(RL)(RL)
SPEAKERS
F
CN4101
(D)
A
B
(C)
29V
(C)
L
J451A
J452A
Q390
DTA124EK
(C)
Q389
DTC143EK
Rear, CenterRY
Drive
Front RY
Drive
Q387
DTC143EK
12V
1SS3551SS355
-12V
6V
-6V
5V
(C)
0V
5V
-29V
Q451
2SD2012
Q452
2SB1375
-11.6V
10.3V
-40V
J453A
C
L
J454A
: The power supply is shown with the marked box.
5
6
1SS355
7
J
1/2
8
D
29
1
23
VSX-C300, VSX-C300-S
3.13 POWER (2/2), SW, TRANS 2 and TRANS 1 ASSYS
A
B
4
TRANS 1 ASSY
M
(AWX7906)
TRANS 2 ASSY (AWX7907)
L
C
J 1/2
J451
J452
J453
J 1/2
J454
D
30
J
1234
CAUTION :
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE NO. 49102.5 MFD, BY
LITTELFUSE INK. FOR IC501 and IC502 (AEK7014).
2/2
L M
CAUTION :
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE NO. 491.630 MFD, BY
LITTELFUSE INK. FOR IC503 (AEK7006).
Loading...