Pioneer VSX-C501-S Service manual

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 2003

STANDBY/ON

PULL­OPEN

DTS2PRO LOGICIIAV DIRECT2DIGITAL

VSX-C501-S

PHONESADVANCEDNEO:6

MASTER

SOUND MODE

INPUT SELECTOR

VOLUME

DOWN UP

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

VSX-C501-S

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Model Type Power Requirement Remarks

VSX-C501-S MYXU AC220-230V

ORDER NO.

RRV2796

For details, refer to "Important symbols for good services".

T-ZZK JULY 2003 printed in Japan

1234

SAFETY INFORMATION

A

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

B

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)

C

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

D

E

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.

Reading should
not be above

0.5 mA

Earth
ground

Device
under
test

Also test with
plug reversed
(Using AC adapter
plug as required)

Test all
exposed metal
surfaces

Leakage
current
tester

AC Leakage Test

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
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.

on the schematics and

F

2

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VSX-C501-S

5678

[ 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:

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.

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.

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.

A

B

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.

C

D

56

VSX-C501-S

E

F

7

8

3

CONTENTS

SAFETY INFORMATION ..................................................................................................................................... 2

A

B

C

D

E

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 and AMP KAWA ASSYS ...................................................................................................... 40

3.14 6CH AMP ASSY .................................................................................................................................... 42

3.15 AMP OUT ASSY .................................................................................................................................... 44

3.16 ENCODER, FRONT and 1P-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 and 1P-SW ASSYS ..............................................................................................72

4.11 PRIMARY ASSY .................................................................................................................................... 76

4.12 VHVL ASSY ........................................................................................................................................... 77

5. PCB PARTS LIST ...........................................................................................................................................78

6. ADJUSTMENT ............................................................................................................................................... 85

6.1 TUNER SECTION ....................................................................................................................................85

7. GENERAL INFORMATION............................................................................................................................. 86

7.1 DIAGNOSIS ............................................................................................................................................. 86

7.1.1 Test Mode .......................................................................................................................................... 86

7.1.2 Protection Circuit ...............................................................................................................................87

7.1.3 Specifications of Speaker Detection.................................................................................................. 88

7.1.4 Circuit Description ............................................................................................................................. 89

7.1.5 Troubleshooting.................................................................................................................................. 90

7.1.6 Timing Chart ......................................................................................................................................92

7.2 PARTS...................................................................................................................................................... 96

7.2.1 IC ....................................................................................................................................................... 96

7.2.2 DISPLAY .......................................................................................................................................... 103

7.3 CLEANING............................................................................................................................................. 104

8. PANEL FACILITIES ...................................................................................................................................... 105

1234

F

4

1234

VSX-C501-S

Amplifier section

Continuous Power Output (STEREO mode)

Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 W + 60 W

(DIN 1 kHz, THD 1 %, 8 Ω)

Continuous Power Output (

SURROUND mode)

Front. . . . . . . . . . . . . . . 75 W/ch (DIN 1 kHz, THD 1 %, 8 Ω)

Center. . . . . . . . . . . . . . . . 75 W (DIN 1 kHz, THD 1 %, 8 Ω)

Surround . . . . . . . . . . . 75 W/ch (DIN 1 kHz, THD 1 %, 8 Ω)

Surround back. . . . . . . . . .75 W (DIN 1 kHz, THD 1 %, 8 Ω)

RMS Power Output

Front. . . . . . . . . . . . . . . . .100 W/ch (1 kHz, THD 10 %, 6 Ω)

Center. . . . . . . . . . . . . . . . . .100 W (1 kHz, THD 10 %, 6 Ω)

Surround . . . . . . . . . . . . .100 W/ch (1 kHz, THD 10 %, 6 Ω)

Surround back. . . . . . . . . . . .100 W (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 Ω unbalanced

AM tuner section

Frequency Range . . . . . . 531 kHz to 1,602 kHz (9 kHz step)

Sensitivity (IHF, Loop antenna) . . . . . . . . . . . . . . . 350 µV/m

Selectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 dB

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Loop antenna

Miscellaneous

Power Requirements . . . . . . . . . . AC 220 – 230 V, 50/60 Hz

Power Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . 190 W

In standby (AV Direct off) . . . . . . . . . . . . . . . . . . . . . . .0.4 W

Dimensions. . . . . . . . . . . . . .420 (W) x 70 (H) x 383 (D) mm

Weight (without package) . . . . . . . . . . . . . . . . . . . . . . 6.8 kg

Furnished parts

Microphone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Mic stand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SR+ mini-plug cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

AM loop antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

FM wire antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Dry cell batteries (AA size IEC R6P) . . . . . . . . . . . . . . . . . .2

Remote control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Power cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Speaker cable labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Warranty card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Note

• Specifications and the design are subject to possible
modifications without notice, due to improvements.

Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic", "Surround EX" and the double-D
symbol are trademarks of Dolby Laboratories.
"DTS", "DTS-ES Extended Surround", "Neo:6" and "DTS 96/
24" are trademarks of Digital Theater Systems, Inc.

FRONT

FRONT

FRONT

FRONT

CENTER

R

R

R

R

L

L

L

L

CENTER

SURROUND

SURROUND

SURROUND

SURROUND

SURROUND

BACK

SURROUND

BACK

Accessories

• Remote Control Unit
(AXD7355)

• Power Cable
(ADG1154)

• Microphone
(APM7004)

• Microphone stand
(AEB7313)

• SR+ mini-plug cable
(ADE7095)

•

FM wire antenna
(ADH7030)

• AM loop antenna
(ATB7009)

• Speaker cable labels
(ARW7232)

• Dry Cell Battery
(AA size IEC R6P)
(VEM1030)

RECEIVER

AUDIO

SOURCE

RECEIVER

SLEEP

RECEIVER

AV DIRECT

INPUT

DVD

VIDEO

STB

FRONT FM/AM

DVR/TV

SURROUND

ADVANCED
SURROUND

SOUND
MODE

SIGNAL
SELECT

DIALOG

AUTO STEREO

LEVEL

TEST TONECH SELECT

MUTE

MASTER
VOLUME

DTV MENU
TOP MENU

T.EDIT
MENU

GUIDE
SEARCH
SUBTITLE

MCACC
SETUP

TUNE

TUNE

STST

SYSTEM
SETUP

BANDEON RETURN RF ATT

A

DISPLAY

CLASS MPX

D.ACCESS

ENTER

BC D E

DISC

10

ENTER

SBch MODE DIMMER

TV CONTROL

CHANNEL

CHANNEL

VOLUME

INPUT

Signal-to-Noise Ratio. . . . . . . . . . . . . . . . . . . . . . . . . . .50 dB

5678

1. SPECIFICATIONS

A

B

C

D

E

56

VSX-C501-S

7

F

5

8

1234

2. EXPLODED VIEWS AND PARTS LIST

NOTES:

A

2.1 PACKING

B

C

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.)

1

2

3

4

5

22

21

20

9

14

11

17

6

7

D

15

E

19

13

12

18

16

F

6

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VSX-C501-S

>

PACKING parts List

Mark

No. Description Part No.

1 FM Wire Antenna ADH7030

2 AM Loop Antenna ATB7009

4 Speaker Cable Label ARW7232

5 Operating instructions 501 ARE7327

(English/French)

6 Operating instructions 501 ARC7464

(German/Italian)

7 Operating instructions 501 ARC7465

(Spanish/Dutch)

8• • • • • •

NSP 9 Polyethylene Bag (A4x2) AHG7097

10 • • • • • •

11 Remote Control Unit AXD7355

12 Battery Cover AZA7424

NSP 13 Dry cell batteries (R6P,AA) VEM1030

NSP 14 Warranty Card ARY7065

15 Left Pad 301 AHA7407

5678

A

3 Power Cable ADG1154

B

16 Right Pad 301 AHA7408

17 Spacer AHB7088

18 Packing Sheet AHG7015

19 Packing Case AHD8168

20 SR+ mini-plug cable ADE7095

21 Microphone stand AEB7313

22 Microphone APM7004

C

D

E

56

VSX-C501-S

F

7

8

7

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2.2 EXTERIOR SECTION

A

6

18

17

10

18

12

23

A

NON-CONTACT

18

18

18

1

SIDE

19

CONTACT SIDE

18

8

18

25

18

18

5

17

B

Refer to

C

20

20

"2.3 INTERIOR SECTION".

D

E

F

20

11

Refer to
"2.4 FRONT PANEL SECTION".

20

A

22

I

2

20

A

18

3

20

16

O

20

22

4

16

2214

24

*Serial Number Label is put on
bottom of Under Base.

22

14

22

20

15

9

21

13

22

20

15

22

8

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VSX-C501-S

>

5678

EXTERIOR SECTION parts List

Mark

No. Description Part No.

1 FM/AM TUNER MODULE AXQ7246

2 6CH AMP Assy AWM7786

3 D5V Assy AWX8224

NSP 4 AMP MODULE 6CH AXQ7247

5 Bonnet Case AZN7934

6 Label C501SMY ARW7222

7• • • • • •

8 Fan Cover AMR7446

9 Rear Panel 501SMY ANC8161

10 Tuner Barrier AEC7383

11 Getter Label ARW7235

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 BCZ40P060FNI
18 Screw BBZ30P080FZK
19 Screw PPZ30P100FZK
20 Screw BBZ30P060FMC

A

B

C

21 Screw BBZ30P300FZK
22 Screw BBZ30P140FMC
23 J1905 13P FFC/60V ADD7402
NSP 24 Label VRW1629
25 SP Terminal Label ARW7229

D

E

56

VSX-C501-S

F

7

8

9

1234

2.3 INTERIOR SECTION

F

20

21

2

NON-CONTACT

SIDE

8

E

J

CONTACT SIDE

H

31

K

B

B

1

M

23

J

I

M

31

N

31

31

31

16

F

C

15

J

31

4

P

3

E

5

31

L

H

A

11

K

12

B

13

14

31

18

A

31

C

6

33

31

L

31

33

N

A

32

I

H

22

32

B

19

F

D

D

31
24

25

C

D

31

31

D

28

17

31

7

N

C

E

9

31

31

10

Q

31

E

27

26

30

F

10

1234

VSX-C501-S

29

>

>

5678

INTERIOR SECTION parts List

Mark

No. Description Part No.

1 SCART-1F Assy AWX8233
2 SCART-2F Assy AWX8169
3 12V Assy AWX8170
4 DSP Assy AWX8239
5 DSP KAWA Assy AWX8257

6 PRIMARY Assy AWX8230
7 MOTHER Assy AWX8203
8 AMP KAWA Assy AWX8223
9 AMP OUT Assy AWX8229
10 VHVL Assy AWX8234

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 ATS7350
20 Nylon Rivet AEC7436

A

B

C

21 Scart Barrier AEC7458
22 Core Stay A ANG7447
23 Core Stay B ANG7448
24 Jack Stay ANG7450
25 Trans Frame ANG7446

NSP 26 Under Base ANA7151
27 PCB Support AEC7365
28 PCB Mold AMR2533
NSP 29 PC Support VEC1749
30 Foot REC-434

31 Screw BBZ30P060FMC
32 Screw BCZ40P060FNI
33 Screw BBZ30P180FMC

D

E

56

VSX-C501-S

F

7

8

11

1234

2.4 FRONT PANEL SECTION

A

22

19

B

8

C

28

7

11

10

21

G

1

6

31

23

14

26

M

5

22

2

18

22

12

12

17

22

27

22

15

29

L

20

3

22

22

16

22

K

4

24

11

10

NON-CONTACT

SIDE

CONTACT SIDE

D

E

F

28

30

25

13

Accessories of
No. 4 ENCORDER ASSY

12

1234

VSX-C501-S

5678

FRONT PANEL SECTION parts List

Mark

No. Description Part No.

1 FRONT IN Assy AWX8246
2 1P-SW Assy AWX8206
3 FRONT Assy AWX8205
4 ENCODER Assy AWX8207
5 Front Panel 501SMY Assy AXG7192

NSP 6 Front Panel 501SMY AMB7841
NSP 7 Power Button S AAD7696
8 PIONEER Name Plate VAM1129
9• • • • • •
10 Insulator Ring AAK8091

11 Rubber Foot VEB1325
12 VOL Ring ABH7220
13 Volume Knob S Assy AAB7258
14 Select Knob S Assy AAB7259
15 LED Lens 501 AAK8088

16 J1903 9P FFC/60V ADD7400
17 J1902 15P FFC/60V ADD7399
18 J1909 19P FFC/60V ADD7422
19 Jack Cover AMR7447
20 Front Frame ANG7445

A

B

C

21 FL Lens 501 AAK8087
22 Screw PPZ30P080FMC
23 Door Spring ABK7041
24 Earth Plate ANG7466
25 Door 501 AAK8090

26 LED Plate 501MY AAK8093
27 FL Filter AAK8104
28 Rubber Sheet AEB7054
29 LED Lens Holder AMR7448
30 Door Sheet AMR7449

31 Hologram Label ARW7239

D

E

56

VSX-C501-S

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7

8

13

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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

3.1.1 AUDIO BLOCK

A

FRONT IN ASSY (3/3)

A

FM/AM TUNER
MODULE

FRONT IN

G

B

ASSY (1/3)

G

Q2104

C

D

E

C

SCART-2F
ASSY (1/2)

28

29

24
23

25

27

22

201921

SCART-1F

B

ASSY (1/2)

57

75

75

5

7

7

6

13

75

75

E

DSP
KAWA

351

7

32

232224

28 26

ASSY

28

9

FRONT IN

G

ASSY (2/3)

32

678

456

12

7

F

F

14

1234

DSP
ASSY

VSX-C501-S

5678

A

B

2

H

AMP KAWA ASSY

17

28

13

11

31

13

15

29

75

9

32

13

1

6

1

6

16

18

C

D

6CH AMP

I

ASSY

J

D

MOTHER ASSY

AMP OUT
ASSY

E

56

VSX-C501-S

F

7

8

15

1234

3.1.2 VIDEO AND POWER SUPPLY BLOCKS

A

SCART-2F ASSY (2/2)

C

SCART-1F

B

ASSY (2/2)

1

8

6

B

C

4

1

6

4

8

1

6

8

4

D

13

7

5

9

3

E

11

5

G

FRONT IN
ASSY (2/3)

MOTHER ASSY

F

16

1234

VSX-C501-S

D

5678

A

N

PRIMARY ASSY

B

D

P

12V ASSY

MOTHER ASSY

SCART-1F
ASSY

D2113,D2117,
D2118,D2120

B

I

6CH AMP
ASSY

DSP ASSY

F

Q

VHVL ASSY

C

D

E

D

MOTHER ASSY

56

VSX-C501-S

F

7

8

17

1234

3.2 OVERALL WIRING DIAGRAM

A

SCART-2F ASSY

C

(AWX8169)

B

SCART-1F ASSY
(AWX8233)

B

AC POWER CORD
ADG1154

AC INLET ASSY
VKP2116

C

N

PRIMARY ASSY

12V ASSY

P

(AWX8170)

D

D 1/5- D 5/5

MOTHER ASSY
(AWX8203)

(AWX8230)

CN8003

ATS7350

D

F

F 1/2- F 2/2

CN8007

DSP ASSY (AWX8239)

J4101
ADX7442

CN8012

E

G

FRONT IN ASSY
(AWX8246)

FRONT ASSY

M

L

(AWX8205)
1P­SW ASSY

F

18

(AWX8206)

VSX-C501-S

1234

5678

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

H

J

FM/AM TUNER

MODULE

(AXQ7246)

AMP OUT ASSY
(AWX8229)

AMP KAWA ASSY
(AWX8223)

DC FAN MOTOR
AXM7025

A

A

B

E

DSP KAWA
ASSY
(AWX8257)

D5V ASSY

O

(AWX8224)

C

I

6CH AMP ASSY
(AWM7786)

D

Q

VHVL ASSY
(AWX8234)

E

56

VSX-C501-S

K

ENCODER ASSY
(AWX8207)

F

7

8

19

1234

3.3 FM/AM TUNER MODULE

A

FM/AM TUNER MODULE (AXQ7246)

A

FM FRONT END

B

(FM)

(FM)

(FM)

(FM)

C

(FM)

MW RF TUNING BLOCK

(FM)

D

(AM)

(AM)

(AM)

(AM)

(AM)

(FM)

(FM)

(FM)

(AM)

E

F

A

20

1234

VSX-C501-S

5678

(AM)

(AM)

(AM)

(AM)

(AM)

(AM)

(FM)

(AM)

(AM)

(FM)

: The power supply is shown with the marked box.

(TX)

: AUDIO SIGNAL ROUTE (TUNER)

(AM)

: AM SIGNAL ROUTE

(FM)

: FM SIGNAL ROUTE

D 1/5

CN801

(TX)

(TX)

(TX)

(TX)

A

B

C

(FM)

(AM)

(FM)

(TX)

D

E

56

VSX-C501-S

F

A

7

8

21

1234

3.4 SCART-1F ASSY

A

(D)

CN1263

D 2/5

(D)

(D)

(D)

B

C

(A)

(A)

(A)

(A)

D

E

F

(R)

(R)

(R)

(C)(C)(C)

(C)

(A)(A)

(R)

(R)

(C)

22

B

C

CN2201

C

CN2202

VSX-C501-S

1234

5678

: The power supply is shown with the marked box.

601

P

(A)

(A)(A)

To
T1 PT

A

B

CN1207

D 3/5

C

(A)

IC2104:
ANALOG
AUDIO
FUNCTION

(A)

(A)

(A)

(A)(A)

(A)

D

D 2/5

E

CN1262

SCART-1F ASSY

B

(AWX8233)

(A)

: AUDIO SIGNAL ROUTE (ANALOG)

(D)

: AUDIO SIGNAL ROUTE (DIGITAL)

(C)

: VIDEO SIGNAL ROUTE (COMPOSITE)

(R)

: VIDEO SIGNAL ROUTE (RGB: R)

56

CAUTION : FOR CONTINUED PROTECTION

VSX-C501-S

AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME TYPE
NO. 49102.5 FOR IC2101 AND IC2102
MFD, BY LITTELFUSE INC.

7

F

B

23

8

1234

3.5 SCART-2F ASSY

CN2102

(R)

B

(R)

(C)

(R)

A

B

C

CN2103

B

(R)(R)

(C)

D

E

(C)

RGB VIDEO
FUNCTION

(C)

(C)

(C) (C)

F

C

24

1234

VSX-C501-S

5678

SCART-2F ASSY

C

(AWX8169)

(R)

N

A

CN552

VIDEO POWER
SUPPLY

B

D 1/5

CN9001

BLANKING & STATUS
SELECT

C

D

E

: The power supply is shown with the marked box.

(C)

: VIDEO SIGNAL ROUTE (COMPOSITE)

(R)

: VIDEO SIGNAL ROUTE (RGB: R)

56

VSX-C501-S

F

C

7

8

25

1234

3.6 MOTHER ASSY (1/5)

A

D 2/5

B

CN201

A

SOME FUNCTION IS ON : 0V
ALL FUNCTION IS OFF : 5V

C

CN2204

C

D

RDS

E

F

D 2/5

D 1/5

26

: The power supply is shown with the marked box.

VSX-C501-S

1234

N

CN551

5678

CN4203

L

A

DC DETECT: 3-4V
OVERLOAD DETECT: 2-3V
Short-circuit Fan and Power
supply circuit: less than 2V
(VH/VL)

D 1/5

MOTHER ASSY (AWX8203)

B

C

D 3/5

D 2/5

D 2/5

D

E

56

VSX-C501-S

F 2/2

7

CN8012

F

D 1/5

27

8

1234

3.7 MOTHER ASSY (2/5) and DSP KAWA ASSY

A

D 4/5

D 1/5

(A)(A)

(A)(A)

D 1/5

NORMAL : 0V
OVERLOAD : 5V

(A)

CN4102

B

G

(A)

D 1/5

IATT
ON : +12V
OFF : -12V

INPUT ATT

C

A/D OVERLOAD
DETECT

CN2106

B

(A)(A)

(A)

(A)

D 1/5

D

(A)

(A)

(D)

CN2104

B

(A)

E

(A)

(A)

(A)

E

DSP KAWA ASSY
(AWX8257)

F

D 2/5

28

(D)

F 1/2

E

1234

CN8017

F 1/2

CN8003

VSX-C501-S

(A)

F 1/2

(A)

CN8007

5678

D 2/5

MOTHER ASSY (AWX8203)

LOW PASS FILTER

(A)

(A)

: AUDIO SIGNAL ROUTE (ANALOG)

(D)

: AUDIO SIGNAL ROUTE (DIGITAL)

(A)

A

B

C

(A)

(A)

(A)

(A)

For SP CONFIG.
MIX AMP

(A)

D 3/5

D

E

: The power supply is shown with the marked box.

VSX-C501-S

56

F

D 2/5

7

8

29

1234

3.8 MOTHER ASSY (3/5)

A

D 3/5

B

MOTHER ASSY (AWX8203)

D 1/5

D 2/5

(A)

(A)

C

(A)

(A)

J2101

B

D

E

D 1/5

F

D 3/5

30

1234

VSX-C501-S