Pioneer VSX-C402-S User manual

ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) 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
PIONEER CORPORATION 2004
AUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-C402
SOUNDMODE INPUTSELECTOR MASTER
VOLUME
PHONESADVANCEDSTEREOAVDIRECT
FRONTINPUT
STANDBY/ON
DIGITALIN
PHONES
VIDEO AUDIO RL
DTS
2 PROLOGIC II 2 DIGITAL
DOWN UP
R
VSX-C402-S
RRV2919
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-C402-S
VSX-C402-K
THIS MANUAL IS APPLICABLETOTHE FOLLOWING MODEL(S) ANDTYPE(S).
Model Type Power Requirement Remarks
VSX-C402-S MYXU AC220-230V
VSX-C402-K MYXU AC220-230V
VSX-C402-S NVXU AC230V
For details, refer to "Important symbols for good services".
T-ZZR APR. 2004 printed in Japan

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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.
ANY MEASUREMENTS NOT WITHIN THE
LIMITS OUTLINED ABOVE ARE INDICATIVE
OF A POTENTIAL SHOCK HAZARD AND
MUST BE CORRECTED BEFORE RETURN-
ING THE APPLIANCETO 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 on the schematics and
on the parts list 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.
(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 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
Device
under
test
Leakage
current
tester
Earth
ground
Reading should
not be above
0.5 mA
Also test with
plug reversed
(Using AC adapter
plug as required)
Test all
exposed metal
surfaces
AC Leakage Test

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[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.

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CONTENTS
SAFETY INFORMATION.....................................................................................................................................2
1. SPECIFICATIONS ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST............................................................................................................6
2.1 PACKING ...................................................................................................................................................6
2.2 EXTERIOR SECTION................................................................................................................................8
2.3 INTERIOR SECTION...............................................................................................................................10
2.4 FRONT PANEL SECTION ....................................................................................................................... 12
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM..........................................................................................14
3.1 BLOCK DIAGRAM...................................................................................................................................14
3.1.1 AUDIO BLOCK......................................................................................................................................14
3.1.2 VIDEO AND POWER SUPPLY BLOCKS.............................................................................................. 16
3.2 OVERALL WIRING DIAGRAM................................................................................................................. 18
3.3 FM/AM TUNER MODULE........................................................................................................................20
3.4 SCART-1F ASSY......................................................................................................................................22
3.5 SCART-2F ASSY......................................................................................................................................24
3.6 MOTHER ASSY (1/5)...............................................................................................................................26
3.7 MOTHER ASSY (2/5) and DSP KAWA ASSY .........................................................................................28
3.8 MOTHER ASSY (3/5)...............................................................................................................................30
3.9 MOTHER ASSY (4/5)...............................................................................................................................32
3.10 MOTHER ASSY (5/5).............................................................................................................................34
3.11 DSP ASSY (1/2).....................................................................................................................................36
3.12 DSP ASSY (2/2).....................................................................................................................................38
3.13 FRONT IN, SUR OUT and AMP KAWA ASSYS....................................................................................40
3.14 6CH AMP ASSY ....................................................................................................................................42
3.15 AMP OUT ASSY....................................................................................................................................44
3.16 ENCODER, FRONT and POWER SW ASSYS ..................................................................................... 46
3.17 PRIMARY, D5V, 12V and VHVL ASSYS ................................................................................................48
4. PCB CONNECTION DIAGRAM .....................................................................................................................50
4.1 FM/AM TUNER MODULE........................................................................................................................51
4.2 SCART-1F and 12V ASSYS.....................................................................................................................52
4.3 SCART-2F ASSY......................................................................................................................................56
4.4 MOTHER, DSP KAWA and D5V ASSYS.................................................................................................60
4.5 DSP ASSY...............................................................................................................................................64
4.6 FRONT IN ASSY......................................................................................................................................66
4.7 AMP KAWA ASSY ................................................................................................................................... 67
4.8 6CH AMP ASSY ......................................................................................................................................68
4.9 AMP OUT ASSY......................................................................................................................................70
4.10 ENCODER, FRONT, POWER SW and SUR OUT ASSYS.................................................................... 72
4.11 PRIMARY ASSY .................................................................................................................................... 76
4.12 VHVL ASSY ........................................................................................................................................... 77
5. PCB PARTS LIST ...........................................................................................................................................78
6. ADJUSTMENT ............................................................................................................................................... 84
6.1 TUNER SECTION....................................................................................................................................84
7. GENERAL INFORMATION............................................................................................................................. 85
7.1 DIAGNOSIS.............................................................................................................................................85
7.1.1 Test Mode...........................................................................................................................................85
7.1.2 Protection Circuit................................................................................................................................ 86
7.1.3 Specifications of Speaker Detection ..................................................................................................87
7.1.4 Circuit Description..............................................................................................................................88
7.1.5 Troubleshooting.................................................................................................................................. 89
7.1.6 DSP Trouble shooting......................................................................................................................... 90
7.1.7 Timing Chart....................................................................................................................................... 95
7.2 PARTS......................................................................................................................................................99
7.2.1 IC .......................................................................................................................................................99
7.2.2 DISPLAY.......................................................................................................................................... 105
7.3 CLEANING.............................................................................................................................................106
8. PANEL FACILITIES ...................................................................................................................................... 107

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1. SPECIFICATIONS
Amplifier section
Continuous Power Output (STEREO mode)
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 W + 40 W
(DIN 1 kHz, THD 1 %, 8 Ω)
Continuous Power Output (SURROUND mode)
Front. . . . . . . . . . . . . . . . . . . . .50 W/ch (DIN 1 kHz, THD 1 %, 8 Ω)
Center . . . . . . . . . . . . . . . . . . . . . .50 W (DIN 1 kHz, THD 1 %, 8 Ω)
Surround. . . . . . . . . . . . . . . . . .50 W/ch (DIN 1 kHz, THD 1 %, 8 Ω)
RMS Power Output
Front. . . . . . . . . . . . . . . . . . . . . . . 75 W/ch (1 kHz, THD 10 %, 6 Ω)
Center . . . . . . . . . . . . . . . . . . . . . . . . 75 W (1 kHz, THD 10 %, 6 Ω)
Surround. . . . . . . . . . . . . . . . . . . . 75 W/ch (1 kHz, THD 10 %, 6 Ω)
• Above specifications are applicable when the power supply is
230V.
Audio section
Input (Sensitivity/Impedance) . . . . . . . . . . . . . . . . . . 200 mV/47 kΩ
Output (Level/Impedance)
VIDEO, DVR/TV. . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/2.2 kΩ
Video section
Input (Sensitivity/Impedance) . . . . . . . . . . . . . . . . . . . . 1 Vp-p/75 Ω
Output (Level/Impedance). . . . . . . . . . . . . . . . . . . . . . . 1 Vp-p/75 Ω
FM tuner section
Frequency Range. . . . . . . . . . . . . . . . . . . . . .87.5 MHz to 108 MHz
Usable Sensitivity. . . . . . . . . . . . Mono:15.2 dBf, IHF (1.6 µV/ 75 Ω)
50 dB Quieting Sensitivity. . . . . . . . . . . . . . . . . . . . .Mono: 20.2 dBf
Stereo: 41.2 dBf
Signal-to-Noise Ratio. . . . . . . . . . . . . . . . . Mono: 76 dB (at 85 dBf)
Stereo: 72 dB (at 85 dBf)
Signal-to-Noise Ratio (DIN). . . . . . . . . . . . . . . . . . . . . Mono: 62 dB
Stereo: 58 dB
Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stereo: 0.6 % (1 kHz)
Alternate Channel Selectivity . . . . . . . . . . . . . . . . . 70 dB (400 kHz)
Stereo Separation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 dB (1 kHz)
Frequency Response . . . . . . . . . . . . . . . . . 30 Hz to 15 kHz (±1dB)
Antenna Input (DIN) . . . . . . . . . . . . . . . . . . . . . . . 75 Ωunbalanced
AM tuner section
Frequency Range. . . . . . . . . . . .531 kHz to 1,602 kHz (9 kHz step)
Sensitivity (IHF, Loop antenna). . . . . . . . . . . . . . . . . . . . . 350 µV/m
Selectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 dB
Signal-to-Noise Ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 dB
Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Loop antenna
Miscellaneous
Power Requirements
UK model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 230 V, 50/60 Hz
European model. . . . . . . . . . . . . . . . . . . AC 220 – 230 V, 50/60 Hz
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150 W
In standby (AV Direct off) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4 W
Dimensions. . . . . . . . . . . . . . . . . . . 420 (W) ×70 (H) ×383 (D) mm
Weight (without package) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 kg
Furnished parts
AM loop antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FM wire antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Dry cell batteries (AA size IEC R6P) . . . . . . . . . . . . . . . . . . . . . . .2
Remote control unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Power cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
MINI Jack cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Speaker cable labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Warranty card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
• Specifications and the design are subject to possible
modifications without notice, due to improvements.
Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic", and the double-D symbol are
trademarks of Dolby Laboratories.
" DTS " and " DTS Digital Surround " are trademarks of
Digital Theater Systems, Inc.
Note
Accessories
• Remote Control Unit
(AXD7386)
• Power Cable (MYXU Type)
(ADG1154)
• Power Cable (NVXU Type)
(ADG1156) • Dry Cell Battery (R6P, AA)
• AM loop antenna
(ATB7009) • FM wire antenna
(ADH7030)
RECEIVER
ROOMSETUP
AUDIO
SOURCE
RECEIVER
AVDIRECT
SR+
RECEIVER
DVD
VIDEO
STB
FRONT FM/AM
DVR/TV
SURROUND ADVANCED
SURROUND
SOUND
MODE VIRTUAL
SB
DIALOG
AUTO STEREO
HDDSTOP REC DVDREC
MUTE
MASTER
VOLUME
T.EDIT MENU
RETURN
SEARCH
TUNE TUNE
STST
DISC NAVIGATOR SYSTEM SETUP
SIGNAL SEL BANDEPGEON RF AT T
A
DISPLAY
CLASS MPX
D.ACCESS
ENTER
BCD E
TIMER REC
+10
ENTER
CHSELECT TEST TONE
TV CONTROL SLEEP
CHANNEL VOLUME
INPUT CHANNEL
DIMMER
CLEAR

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2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
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.
For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions, apply as you think it appropriate.)
NOTES:
14
5
6
7
813
17
9
15
11
10
18
19
16
12
2
4
3
3
1
10
VSX-C402-S/NVXU Type Only
VSX-C402-S/NVXU Type Only
VSX-C402-S/MYXU and VSX-C402-K/MYXU Types Only
1
2
5
4

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PACKING parts List
(2) CONTRASTTABLE
VSX-C402-S/MYXU, VSX-C402-K/MYXU and VSX-C402-S/NVXU are constructed the same except for the follow-
ing:
Mark No. Description Part No.
1 FM Wire Antenna ADH7030
2 AM Loop Antenna ATB7009
> 3Power Cable See Contrast table(2)
4 Speaker Cable Label ARW7163
5 Operating instructions 402 ARB7303
(English)
6 Operating instructions 402 See Contrast table(2)
(German)
7 Operating instructions 402 See Contrast table(2)
(French, Italian)
8 Operating instructions 402 See Contrast table(2)
(Dutch, Spanish)
NSP 9 Polyethylene Bag (A4x2) See Contrast table(2)
10 Polyethylene Bag See Contrast table(2)
(0.03x230x340)
11 Remote Control Unit AXD7386
12 Battery Cover AZA7424
NSP 13 Dry cell batteries (R6P,AA) VEM1010
NSP 14 Warranty Card ARY7065
15 Left Pad 402 AHA7407
16 Right Pad 402 AHA7408
17 Spacer AHB7088
18 Packing Sheet AHG7015
19 Packing Case See Contrast table(2)
Mark No. Description Part No.
Mark No. Symbol and Description VSX-C402-S/
MYXU VSX-C402-K/ MYXU VSX-C402-S/ NVXU
> 3Power Cable ADG1154 ADG1154 ADG1156
6 Operating instructions 402 ARC7531 ARC7531 Not used
(German)
7 Operating instructions 402 ARC7532 ARC7532 Not used
(French, Italian)
8 Operating instructions 402 ARC7533 ARC7533 Not used
(Dutch, Spanish)
NSP 9 Polyethylene Bag (A4x2) AHG7097 AHG7097 Not used
NSP 10 Polyethylene Bag Not used Not used Z21-038
(0.03x230x340)
19 Packing Case 402SMY AHD8266 Not used Not used
19 Packing Case 402KMY Not used AHD8267 Not used
19 Packing Case 402SNV Not used Not used AHD8268

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2.2 EXTERIOR SECTION
CONTACT SIDE
NON-CONTACT
SIDE
Refer to
"2.4 FRONT PANEL SECTION".
Refer to
"2.3 INTERIOR SECTION".
A
A
I
R
A
O
18
18
18
5
12
17
7
6
18
10
1
23
17
19 18
18
9
18
18
8
26
18
24
11
13 21
2214
22
20
15
15
16
2214
22
3
20
20
20
18 16
20
20
22
22
20
2
22
20
20
20
4
JAMP OUT from
J302
25

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EXTERIOR SECTION parts List
(2) CONTRASTTABLE
VSX-C402-S/MYXU, VSX-C402-K/MYXU and VSX-C402-S/NVXU are constructed the same except for the follow-
ing:
Mark No. Description Part No.
1 FM/AM TUNER MODULE AXQ7246
2 6CH AMP Assy AWM7786
3 D5V Assy AWX8499
NSP 4 AMP MODULE 6CH AXQ7255
5 Bonnet Case See Contrast table(2)
6 Label See Contrast table(2)
7 License Label ARW7276
8Fan Cover AMR7446
9 Rear Panel 402SMY ANC8296
10 Tuner Barrier AEC7383
11 SUR OUT Assy AWX8493
> 12 AC Inlet Assy VKP2116
13 DC Fan Motor AXM7025
14 Fan Plate ANG7462
15 FET Bracket A ANG7418
NSP 16 Heat Sink ANH7161
17 Screw See Contrast table(2)
18 Screw BBZ30P080FNI
19 Screw PPZ30P100FNI
20 Screw BBZ30P060FTC
21 Screw BBZ30P300FTC
22 Screw BBZ30P140FTC
23 J1905 13P FFC/60V ADD7402
NSP 24 Label VRW1629
25 J302 6P FFC/60V ADD7462
26 Card Spacer AEC7214
Mark No. Description Part No.
Mark No. Symbol and Description VSX-C402-S/
MYXU VSX-C402-K/ MYXU VSX-C402-S/ NVXU
5 Bonnet Case S AZN7983 Not used AZN7983
5 Bonnet Case K Not used AZN7935 Not used
6 Label C402SMY ARW7277 Not used Not used
6 Label C402KMY Not used ARW7278 Not used
6 Label C402SNV Not used Not used ARW7279
17 Screw BCZ40P060FNI BCZ40P060FZK BCZ40P060FNI

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2.3 INTERIOR SECTION
CONTACT SIDE
NON-CONTACT
SIDE
K
J
BK
M
M
I
J
L
H
B
C
D
A
L
A
F
F
D
N
NE
E
C
I
HF
C
B
J
H
R
Q
D
N
E
20
21
2
15
12
1
31
31
31
5
3
4
31
13
14
31
22
33
31
18
31
SB OUT to
CN3001
11
31
33
6
32
32
28
7
31
17
31
16
31
23 31
34
8
9
31
31
10
30
29
27
26
19
25
31
31
24
31
31
P

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INTERIOR SECTION parts List
Mark No. Description Part No.
1 SCART-1F Assy AWX8505
2 SCART-2F Assy AWX8506
3 12V Assy AWX8502
4 DSP Assy AWX8241
5 DSP KAWA Assy AWX8167
6 PRIMARY Assy AWX8496
7MOTHER Assy AWX8424
8 AMP KAWA Assy AWX8503
9 AMP OUT Assy AWX8420
10 VHVL Assy AWX8507
11 J1908 15P FFC/60V ADD7408
12 J1911 19P FFC/60V ADD7422
13 J1906 10P FFC/60V ADD7405
14 J1909 19P FFC/60V ADD7422
15 J1907 23P FFC/60V ADD7407
16 J1901 17P FFC/60V ADD7398
17 J1904 17P FFC/60V ADD7401
> 18 FU1 Fuse (T2.5A/250V) REK1026
> 19 T1 Power Transformer ATS7346
20 Nylon Rivet AEC7436
21 Scart Barrier AEC7458
22 Core Stay A ANG7447
23 Core Stay B ANG7448
24 Jack Stay ANG7493
25 Trans Frame ANG7446
NSP 26 Under Base ANA7151
27 PCB Support AEC7365
28 PCB Mold AMR2533
NSP 29 PC Support VEC1749
30 Foot Assy REC-434
31 Screw BBZ30P060FTC
32 Screw BCZ40P060FNI
33 Screw BBZ30P180FTC
34 J302 6P FFC/60V ADX7462

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2.4 FRONT PANEL SECTION
CONTACT SIDE
NON-CONTACT
SIDE
8
19
1
2
13
18
9
14 12
12
21
5
4
16
17
22
22 22
22
22
22
22
22
22
3
15
G
L
M
K
10
11
10
7
11

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FRONT PANEL SECTION parts List
(2) CONTRASTTABLE
VSX-C402-S/MYXU, VSX-C402-K/MYXU and VSX-C402-S/NVXU are constructed the same except for the follow-
ing:
Mark No. Description Part No.
1FRONT IN Assy AWX8219
2POWER SW Assy AWX8174
3FRONT Assy AWX8173
4 ENCODER Assy AWX8175
NSP 5 Front Panel Assy See Contrast table(2)
6Front Panel See Contrast table(2)
NSP 7 Power Button See Contrast table(2)
NSP 8 PIONEER Name Plate See Contrast table(2)
9Terminal Cover See Contrast table(2)
10 Insulator Ring AAK8091
11 Rubber Foot VEB1325
12 VOL Ring ABH7220
13 Volume Knob Assy See Contrast table(2)
14 Select Knob Assy See Contrast table(2)
15 LED Lens 301 AAK8084
16 J1903 9P FFC/60V ADD7400
17 J1902 15P FFC/60V ADD7399
18 J1911 19P FFC/60V ADD7422
19 Jack Cover AMR7447
NSP 20 Sub Panel 402 AAK8190
NSP 21 Display Panel 302 AAK8192
22 Screw PPZ30P080FTC
Mark No. Description Part No.
Mark No. Symbol and Description VSX-C402-S/
MYXU VSX-C402-K/ MYXU VSX-C402-S/ NVXU
5Front Panel 402SMY Assy AXG7221 Not used AXG7221
5Front Panel 402KMY Assy Not used AXG7222 Not used
NSP 6 Front Panel 402SMY AMB7873 Not used AMB7873
NSP 6 Front Panel 402KMY Not used AMB7874 Not used
NSP 7 Power Button S AAD7720 Not used AAD7720
NSP 7 Power Button K Not used AAD7697 Not used
NSP 8 PIONEER Name Plate VAM1129 VAM1130 VAM1129
9Terminal Cover S AAK8188 Not used AAK8188
9Terminal Cover B Not used AAK8189 Not used
13 Volume Knob Assy S AAA7027 Not used AAA7027
13 Volume Knob Assy K Not used AAA7028 Not used
14 Select Knob Assy S AAA7029 Not used AAA7029
14 Select Knob Assy K Not used AAA7030 Not used

VSX-C402-S
14
1234
1234
C
D
F
A
B
E
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
3.1.1 AUDIO BLOCK
FRONT IN ASSY (3/3)
G
FM/AM TUNER
MODULE
A
FRONT IN
ASSY (1/3)
G
FRONT IN
ASSY (2/3)
G
DSP
ASSY
F
DSP
KAWA
ASSY
E
SCART-2F
ASSY (1/2)
CSCART-1F
ASSY (1/2)
B
8
7
931
13
1312
13
13
75
2
11
12
10
64
7
28
32
9
678
456
31 27 25 23 24
351

VSX-C402-S 15
5678
5678
C
D
F
A
B
E
MOTHER ASSY
D
6CH AMP
ASSY
I
AMP OUT
ASSY
J
SUR OUT
ASSY
R
AMP KAWA ASSY
H
19
13
15
9
27
30
29
32
2
75
75
75
13
6
1
6
1
18
16
SP Rear
Out
J302
CN3001
B6B-PH-K-S
ADX7462
3
3

VSX-C402-S
16
1234
1234
C
D
F
A
B
E
3.1.2 VIDEO AND POWER SUPPLY BLOCKS
SCART-2F ASSY (2/2)
C
SCART-1F
ASSY (2/2)
B
FRONT IN
ASSY (2/3)
G
MOTHER ASSY
D
1
6
4
8
1
6
4
8
1
6
4
7
511
5
9
3
13
8

VSX-C402-S 17
5678
5678
C
D
F
A
B
E
DSP ASSY
F
6CH AMP
ASSY
I
12V ASSY
P
MOTHER ASSY
DSCART-1F
ASSY
PRIMARY ASSY
BN
VHVL ASSY
Q
MOTHER ASSY
D
D2113,D2117,
D2118,D2120

VSX-C402-S
18
1234
1234
C
D
F
A
B
E
3.2 OVERALLWIRING DIAGRAM
SCART-1F ASSY
(AWX8505)
B
12V ASSY
(AWX8502)
P
SCART-2F ASSY
(AWX8506)
C
PRIMARY ASSY
(AWX8496)
N
FRONT IN ASSY
(AWX8219)
G
POWER
SW ASSY
(AWX8174)
MFRONT ASSY
(AWX8173)
L
D1/5- D5/5
MOTHER ASSY
(AWX8424)
D
F1/2- F2/2
DSP ASSY (AWX8241)
F
AC POWER CORD
MYXU: ADG1154
NVXU: ADG1156
AC INLET ASSY
VKP2116
CN8003CN8009
CN8012
J4601
ADX7442

VSX-C402-S 19
5678
5678
C
D
F
A
B
E
6CH AMP ASSY
(AWM7786)
I
AMP OUT ASSY
(AWX8420)
J
AMP KAWA ASSY (AWX8503)
H
FM/AM TUNER MODULE (AXQ7246)
A
SUR OUT
ASSY
(AWX8493)
R
D5V ASSY
(AWX8499)
O
DSP KAWA
ASSY
(AWX8167)
E
ENCODER ASSY
(AWX8175)
K
VHVL ASSY
(AWX8507)
Q
DC FAN MOTOR
AXM7025
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
CN3001
6
J302
ADX7462
J302

VSX-C402-S
20
1234
1234
C
D
F
A
B
E
3.3 FM/AMTUNER MODULE
(AM)
(AM)
(AM)
(AM) (AM) (AM)
(FM)
(FM)
(FM)
(FM)
(FM)
(FM)
(FM)
(FM)
(FM)
FM FRONT END
MW RF TUNING BLOCK
A
FM/AM TUNER MODULE (AXQ7246)
A