Pioneer SXSW-55, SXSW-77, SXSW-950 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 2005

-

VOLUME

+

STANDBY/ON

SX-SW77

AUDIO INPUT SURROUND

AUDIO MULTI-CHANNEL RECEIVER SUBWOOFER

SX-SW77

SX-SW55
SX-SW950

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

Model Type Power Requirement Remarks

SX-SW77 WYXCN AC220-240V

SX-SW77 WVXCN AC220-240V

SX-SW55 WYXCN AC220-240V

SX-SW55 WVXCN AC220-240V

SX-SW950 KUXCN AC120V

ORDER NO.

RRV3158

For details, refer to "Important Check Points for Good Servicing".

T-ZZK JUNE 2005 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
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to

B

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

C

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

D

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.

Leakage
current

E

Device
under
test

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

Test all
exposed metal
surfaces

AC Leakage Test

tester

Reading should
not be above

0.5 mA

Earth
ground

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

1234

SX-SW77

5678

[Important Check Points for Good Servicing]

In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.

1. Product safety

Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.

1 Use specified parts for repair.

Use genuine parts. Be sure to use important parts for safety.

2 Do not perform modifications without proper instructions.

Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.

3 Make sure the soldering of repaired locations is properly performed.

When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)

4 Make sure the screws are tightly fastened.

Please be sure that all screws are fastened, and that there are no loose screws.

5 Make sure each connectors are correctly inserted.

Please be sure that all connectors are inserted, and that there are no imperfect insertion.

6 Make sure the wiring cables are set to their original state.

Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.

7 Make sure screws and soldering scraps do not remain inside the product.

Please check that neither solder debris nor screws remain inside the product.

8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.

Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.

9 There should be no spark traces or similar marks on the power plug.

When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.

0 Safe environment should be secured during servicing.

When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.

A

B

C

D

2. Adjustments

To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.

3. Lubricants, Glues, and Replacement parts

Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.

4. Cleaning

For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.

5. Shipping mode and Shipping screws

To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.

56

SX-SW77

E

F

3

7

8

1234

CONTENTS

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

1. SPECIFICATIONS ............................................................................................................................................4

2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 6

A

B

C

2.1 PACKING ................................................................................................................................................... 6

2.2 EXTERIOR................................................................................................................................................. 8

2.3 DISPLAY UNIT ......................................................................................................................................... 10

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM..........................................................................................12

3.1 OVERALL WIRING CONNECTION DIAGRAM AND BLOCK DIAGRAM................................................ 12

3.2 MAIN ASSY (1/5) ..................................................................................................................................... 14

3.3 MAIN ASSY (2/5) ..................................................................................................................................... 16

3.4 MAIN ASSY (3/5) ..................................................................................................................................... 18

3.5 MAIN ASSY (4/5) ..................................................................................................................................... 20

3.6 MAIN ASSY (5/5) ..................................................................................................................................... 22

3.7 AC INLET, CONNECT and FL ASSYS .................................................................................................... 24

3.8 POWER SUPPLY UNIT............................................................................................................................ 26

3.9 WAVEFORMS .......................................................................................................................................... 28

4. PCB CONNECTION DIAGRAM ..................................................................................................................... 29

4.1 MAIN ASSY ............................................................................................................................................. 30

4.2 AC INLET and CONNECT ASSYS .......................................................................................................... 34

4.3 FL ASSY ..................................................................................................................................................35

4.4 POWER SUPPLY UNIT............................................................................................................................ 36

5. PCB PARTS LIST ...........................................................................................................................................38

6. ADJUSTMENT ............................................................................................................................................... 40

7. GENERAL INFORMATION............................................................................................................................. 41

7.1 DIAGNOSIS ............................................................................................................................................. 41

7.1.1 TEST MODE ...................................................................................................................................... 41

7.1.2 SPECIFICATIONS OF SPEAKER SETUP ........................................................................................ 43

7.1.3 PROPOSAL OF DSP ERROR DISPLAY........................................................................................... 44

7.1.4 CIRCUIT DESCRIPTION OF DIGITAL AMP. SECTION.................................................................... 45

7.1.5 SPECIFICATIONS FOR THE PROTECTION CIRCUITS FOR THE DIGITAL AMPLIFIER............... 46

7.1.6 CONDITIONS FOR SWITCHING THE ROTATION SPEED OF THE FAN ........................................ 47

7.1.7 DISASSEMBLY.................................................................................................................................. 48

7.2 IC ............................................................................................................................................................. 51

8. PANEL FACILITIES ........................................................................................................................................ 67

D

1. SPECIFICATIONS

SX-SW950

• Amplifier section

RMS Power Output :

Front, Center, Surround

Subwoofer . . . . . . . . . . . .

FTC Power Output :

Front, Center, Surround

Subwoofer. . . . . . . 50 W (45 Hz - 200 Hz, 1 % THD, 6 Ω)

E

• FM tuner section

Frequency range . . . . . . . . . . . . . . . . 87.5 MHz to 108 MHz

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Ω, unbalanced

• AM tuner section

Frequency range . . . . . . . . . . . . . . . . 530 kHz to 1,700 kHz

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

• Subwoofer section

Enclosure. . . . . . . . . . . . . . . . . . . . . . . .Bass-reflex floor type

System . . . . . . . . . . . . . . . . . . . . . . . . . 16 cm 1-way system

Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 cm cone type

Nominal impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ω

F

Frequency range . . . . . . . . . . . . . . . . . . . . 25 Hz to 1.0 kHz

Maximum Input Power . . . . . . . . . . . . . . . . . . . . . . . . 60 W

. . . . . . . . . . . .

60 W (200 Hz, 10 % THD, 6 Ω)

. . . . . . . . . . . .

(200 Hz, - 20 kHz 1 % THD, 6 Ω)

60 W per channel

(1 kHz, 10 % THD, 6 Ω)

50 W per channel

(magnetically shielded)

• Miscellaneous

Power requirements. . . . . . . . . . . . . . . . AC 120 V, 50/60 Hz

Power consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 W

Power consumption in standby . . . . . . . . . . . . . . . . . . 0.2 W

Dimensions . . . . . 7 7 / 8 (W) x 14 3 / 4(H) x 17 3 / 16 (D) in.

200 (W) x 375 (H) x 437 (D) mm

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 lb. 13 oz.

9.0 kg

• Accessories

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

Display unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

AA/R6 dry cell batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Coaxial cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Display cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

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

Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

Operating instructions

4

1234

SX-SW77

5678

SX-SW77

• Amplifier section

RMS Power Output :

Front, Center, Surround

Subwoofer . . . . . . . . . . . . . 70 W (200 Hz, 10 % T.H.D., 3Ω)

Front, Center, Surround . . . . . . . . . . . . .60 W per channel

Subwoofer. . . . . . . . . . . . 60 W (200 Hz, 10 % T.H.D., 6

• FM tuner section

Frequency range . . . . . . . . . . . . . . . . 87.5 MHz to 108 MHz

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . 75

• AM tuner section

Frequency range. . . . . . . . . . . . . . . . . 531 kHz to 1,602 kHz

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

• Subwoofer section

Enclosure . . . . . . . . . . . . . . . . . . . . . . .Bass-reflex floor type

System. . . . . . . . . . . . . . . . . . . . . . . . . .16 cm 1-way system

Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 cm cone type

Nominal impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Frequency range . . . . . . . . . . . . . . . . . . . . 25 Hz to 1.0 kHz

Maximum Input Power . . . . . . . . . . . . . . . . . . . . . . . . . 60 W

Receiver subwoofer (SX-SW77)

. . . . . . . . . . . . .110 W per channel

(1 kHz, 10 % T.H.D., 3

(1 kHz, 10 % T.H.D., 6

Ω, unbalanced

(magnetically shielded)

FM antenna
(ADH7030)

Ω)

Ω)

Ω)

Ω

• Miscellaneous

Power requirements. . . . . . . . . . . . AC 220-240 V, 50/60 Hz

Power consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . .51 W

Power consumption in standby . . . . . . . . . . . . . . . . . . 0.4 W

Dimensions. . . . . . . . . . . . . 200 (W) x 375 (H) x 437 (D) mm

Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 kg

• Accessories

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

Display unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

AA/R6 dry cell batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Audio cable (red/white) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Optical cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Control cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Display cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

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

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

Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

Operating instructions

Note

• Specifications and design subject to possible
modification 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 registered
trademarks of Digital Theater Systems, Inc.

AM loop antenna
(ATB7013)

Remote control
(SX-SW77 : AXD7417)
(SX-SW55
/WYXCN : AXD7419)
(SX-SW55
/WVXCN : AXD7420)
(SX-SW950 : AXD7425)

Display unit

RECORDER

MUTE

 

VOLUME

–

HDD DVD

FM/AM

HELP

CLEAR

TUNE +

DISC NAVIGATOR

TOP MENU
RDS DISP

ENTER

HOME
MENU

TUNE -

PREV NEXT STEP/SLOW

REC

STOP REC

REC MODE



SURROUND ADVANCED SOUND TIMER REC
AUDIO

SUBTITLE ANGLE PLAY MODE

TV



VOLUME

CHANNEL

SHIFT

TV CONTROL

+

RECEIVER

AUDIO INPUT

CHANNEL

VIDEO INPUT

INFO
GUIDE

DVD MENU

DISPLAYTEST TONE

SKIPCMBACK



ONE TOUCH

COPY

INPUT

TV/DVD

TV DIRECT

REC

A

B

C

SYSTEM

SETUP

ST +ST -

RETURN

D

SYSTEM

CONTROL

CONNECTOR

OUTSUB WOOFER

USE ONLY WITH

DISPLAY UNIT

AC IN

(ADE7114)

ANTENNA

CENTER

SPEAKERS

SURROUND

RL

FRONT

RL

FM
UNBAL75Ω

DVD/DVR 1
(COAXIAL)

AUDIO INPUT

DIGITAL

DVD/DVR 2

DIGITAL

(OPTICAL)

(OPTICAL)

AM

LOOP ANTENNA

ANALOG

L

R

Audio cable (red/white) (ADE7117)

AC IN

G-LINK

CONTROL

DIGITAL

OUT

OPTICAL

IN

Optical cable (ADE7116)Control cable

Display cable (ADE7113)

SX-SW77

56

AV 2 (INPUT 1/DECODER)

R

L

VIDEO

AUDIO

INPUT 3

7

S-VIDEO

AV 1 (RGB) - TV

R

AUDIO

COMPONENT VIDEO OUT

VIDEO

Y

S-VIDEO

L

OUTPUT

DVD Recorder

(DVR-530H-AV)

E

B

P

IN

OUT

ANTENNA

P

R

F

5

8

1234

2. EXPLODED VIEWS AND PARTS LIST

NOTES:

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.

A

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.)

2.1 PACKING

SX-SW77

only

3

B

7

WYXCN,

C

KUXCN

SX-SW77

SX-SW77,

SX-SW55

SX-SW55,

SX-SW950

only

only

only

only

6

4

2

5

21

8

22

For WVXCN type

6

22

12

22

22

13

15
16
17

18
19

WVXCN,
KUXCN
only

WYXCN
only

WYXCN
only

1

(1/2)

(1/2)

27

23

28

24

25

(2/2)

(2/2)

10

20

9

WYXCN,
WVXCN
only

11

24

D

E

25

F

6

1234

26

SX-SW77

>

>

5678

(1) PACKING SECTION PARTS LIST

No. Description Part No.

Mark

1 Display Cable ADE7113
2 Control Cable See Contrast table (2)
3 Optical Cable See Contrast table (2)
4Audio Cable (red/white) See Contrast table (2)
5 Coaxial Cord See Contrast table (2)

6AC Power Cord See Contrast table (2)
7 FM Wire Antenna ADH7030
8 AM Loop Antenna ATB7013
9 Remote Control Unit See Contrast table (2)
10 Battery Cover AZA7424

NSP 11 Dry Cell Battery (R6P, AA) VEM1010
12 DISPLAY Unit See Contrast table (2)
13 Operating Instructions See Contrast table (2)
(Enslish)
14 • • • • • •
15 Operating Instructions See Contrast table (2)
(German)

No. Description Part No.

Mark

16 Operating Instructions See Contrast table (2)
(Spanish)
17 Operating Instructions See Contrast table (2)
(French)
18 Operating Instructions See Contrast table (2)
(Italian)
19 Operating Instructions See Contrast table (2)
(Dutch)
20 Label (WEEE) See Contrast table (2)

NSP 21 Warranty Card See Contrast table (2)
NSP 22 Polyethylene Bag Z21-038
NSP 23 Polyethylene Bag AHG7126
24 Pad T AHA7448
25 Pad B AHA7449

26 Packing Case SW See Contrast table (2)
27 Packing Sheet AHG7125
28 Packing Sheet L AHG7128

A

B

(2) CONTRAST TABLE

SX-SW77/WYXCN, WVXCN, SX-SW55/WYXCN, WVXCN and SX-SW950/KUXCN are constructed the same
except for the following:

Mark No. Symbol and Description

2 Cord with Mini Plug ADE7114 ADE7114 ADE7114 ADE7114 Not used
3 Optical Fiber Cable ADE7116 ADE7116 Not used Not used Not used
4 Cord with Plug ADE7117 ADE7117 Not used Not used Not used
5 Coaxial Cord Not used Not used ADE7115 ADE7115 ADE7115
6AC Power Cord ADG1154 ADG1156 ADG1154 ADG1156 ADG7022

9 Remote Control Unit AXD7417 AXD7417 AXD7419 AXD7420 AXD7425

12 DISPLAY Unit AXX7204 AXX7204 AXX7204 AXX7204 Not used

NSP 12 DISPLAY Unit Not used Not used Not used Not used AXX7205

13 Operating Instructions (English) Not used ARB7342 Not used ARB7343 ARE7385
15 Operating Instructions (German) ARC7636 Not used ARC7638 Not used Not used

16 Operating Instructions (Spanish) ARC7637 Not used ARC7639 Not used Not used
17 Operating Instructions (French) ARC7646 Not used ARC7649 Not used Not used
18 Operating Instructions (Italian) ARC7647 Not used ARC7650 Not used Not used
19 Operating Instructions (Dutch) ARC7648 Not used ARC7651 Not used Not used
20 Label (WEEE) ARW7322 ARW7322 ARW7322 ARW7322 Not used

NSP 21 Warranty Card ARY7065 ARY7065 ARY7065 ARY7065 ARY7045

26 Packing Case SW AHD8375 AHD8375 AHD8381 AHD8381 AHD8392

SX-SW77/

WYXCN

SX-SW77/

WVXCN

SX-SW55/

WYXCN

SX-SW55/

WVXCN

SX-SW950/

KUXCN

C

D

E

56

SX-SW77

F

7

7

8

1234

2.2 EXTERIOR

A

B

31

C

29

20

24

23

10

16

15

39

40

38

39

39

6

37

39

39
39

39
39

14

26

30

13

25

36

18

4

5

39

F

39

D

Cleaning paper

39

39

19

39

21

22

17

27

39

B

2

19

12

9

39

B

A

E

E

3

39

39

1

11

A

39

8

A

39

GED-008

7

B

F

8

1234

28

SX-SW77

NON-CONTACT

SIDE

CONTACT SIDE

>

5678

(1) EXTERIOR SECTION PARTS LIST

No. Description Part No.

Mark

1 MAIN Assy See Contrast table (2)
2AC INLET Assy See Contrast table (2)

3POWER SUPPLY Unit AWR7037
4 FM/AM TUNER Unit See Contrast table (2)
5 11P Flexible Cable ADD7506

No. Description Part No.

Mark

NSP 21 Barrier SW AEC7552
NSP 22 Barrier AC AEC7553
NSP 23 Duct Ring AMR7511
NSP 24 Paper Tube 60 AMR7512
NSP 25 Acoustic Absorbent AMV7001

A

6 Connecting Cord ADX7484
7 2P Lead with Housing ADX7485
8 11P Lead with Housing ADX7486
9 2P Lead with Housing ADX7487
10 Speaker A14LR75-51D

11 DC Fan Motor VXM1121
NSP 12 Chassis B ANA7179
NSP 13 Chassis T ANA7180
14 Rear Panel SW See Contrast table (2)
15 Screw (3 x 11.5) ABA7129

16 Rubber Bushing AEB7369
17 Cushion F AEB7370
18 Cushion TX AEB7371
19 Rivet AEC7514
20 Packing AEC7548

NSP 26 Mesh ANC8354
NSP 27 Ferrite Clamp DTH1158
NSP 28 PCB Holder PNW2029
NSP 29 Cosmetic Baffle See Contrast table (2)
NSP 30 Cabinet AMM7009

31 Pioneer Name Plate VAM1152
32 Baffle Assy See Contrast table (2)
33 • • • • •
34 • • • • •
35 • • • • •

36 Screw BBZ40P120FNI
37 Screw BYC40P160FNI
38 Screw BYC40P200FNI
39 Screw PBZ30P080FTC
40 Screw PSZ30P060FNI

(2) CONTRAST TABLE

SX-SW77/WYXCN, WVXCN, SX-SW55/WYXCN, WVXCN and SX-SW950/KUXCN are constructed the same
except for the following:

B

C

Mark No. Symbol and Description

1 MAIN Assy AWK7883 AWK7883 AWK7883 AWK7883 AWK7884
2AC INLET Assy AWU8273 AWU8273 AWU8273 AWU8273 AWU8274
4 FM/AM TUNER Unit AXX7170 AXX7170 AXX7170 AXX7170 AXX7172

14 Rear Panel SW ANC8323 ANC8323 ANC8356 ANC8356 ANC8362

NSP 29 Cosmetic Baffle AMB7903 AMB7903 AMB7903 AMB7903 AMB7905

32 Baffle Assy AXG7278 AXG7278 AXG7278 AXG7278 AXG7279

SX-SW77/

WYXCN

SX-SW77/

WVXCN

SX-SW55/

WYXCN

SX-SW55/

WVXCN

SX-SW950/

KUXCN

D

E

F

56

SX-SW77

9

7

8

1234

2.3 DISPLAY UNIT

A

B

11

10

4

D

10

(1/2)

8

5

C

9

6

D

2

C

8

1

(2/2)

12

7

3

E

F

10

1234

SX-SW77

5678

(1) DISPLAY UNIT PARTS LIST

No. Description Part No.

Mark

1 FL Assy AWU8271
2 CONNECT Assy AWU8272
3 Leg AEB7368
4 Window AAK8285
5 FL Filter AEC7535

6 Display Panel AMB7899
7 Display Cover AMC7059
8 PWR Button Assy AXG7260
9 Pioneer Name Plate VAM1152
10 Screw BPZ30P080FNI

A

11 Screw PSZ30P060FNI
12 DISPLAY Unit See Contrast table (2)

(2) CONTRAST TABLE

SX-SW77/WYXCN, WVXCN, SX-SW55/WYXCN, WVXCN and SX-SW950/KUXCN are constructed the same
except for the following:

Mark No. Symbol and Description

12 DISPLAY Unit AXX7204 AXX7204 AXX7204 AXX7204 Not used

NSP 12 DISPLAY Unit Not used Not used Not used Not used AXX7205

SX-SW77/

WYXCN

SX-SW77/

WVXCN

SX-SW55/

WYXCN

SX-SW55/

WVXCN

SX-SW950/

KUXCN

B

C

D

56

SX-SW77

E

F

11

7

8

1234

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 OVERALL WIRING CONNECTION DIAGRAM AND BLOCK DIAGRAM

A

FAN
VXM1121

CN5602

2

1

B2B-PH-K-S

FAN+

SW POWER SUPPLY

E

(AWR7037)

GNDF

B

CN1001

B11B-PH-K-S

VSF+12

1

VS+12

2

BEAT CUT

C

POWER CONT

D

LIVE

NEUTRAL

21

B2P3S-VH

ADX7487

CN5

21

B2P3S-VH

AC INLET ASSY

B

E

WYXCN,WVXCN:AWU8273

VE+5

GND

VS+3R3

GNDD

FL DC-

FL DC+

VFDP

B2P-VH

+B

GND

3

4

5

6

7

8

9

10

11

1

2

ADX7486

ADX7485

KUXCN:AWU8274

B11B-PH-K-S

1

2

3

4

5

6

7

8

9

10

11

CN3201

B2P-VH

1

2

F

92 16

RDS

IC5701

BU1924FS

CN5701

9604S-11C

DICEDO

123

ADD7506

123

4

CLK

4

11pin FFC

486

TUNER MODULE

GND

6

INPUTSELA

10

+9V

TXL

785

75

5

VSM

TXR

911

10

10

911

RDSDATA,RDSCLK,RDSPOW

7

A/D CONVERTER

IC3003

PCM1803DB

1

2

3

13

INPUT SELECTOR

IC3001

TC4052BFN

14

TX

GND

RDS

3001

XADPDN

15

12

1

12

ANALOG INPUT

(SX-SW950 AUX)

MCLK

ADDATA

WYXCN, WVXCN:AXX7170

KUXCN:AXX7172

WYXCN,WVXCN:XKP3084

KUXCN:XKP3085

AC CORD

F

12

NEUTRAL

AN1

LIVE

21

ANALOG AUDIO SIGNAL
DIGITAL or PWM AUDIO SIGNAL
COMMUNICATION LINE

SX-SW77

1234

5678

MAIN ASSY

A

WYXCN,WVXCN:AWK7883

KUXCN:AWK7884

DIRDO,DIRERR

5V -> 3V

IC951

TC74VHC08FTS1

17

22

14

13 12

DIR

IC601

AK4117VF

3 5

÷

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

÷

6
64
65

75
76
67

100

FDTI

: The power supply is shown with the marked box.

49

7

u-COM

IC5501

PDC128A

74

1

19
69
77
79
27
28

DASDA,DASCL,XDAPDN,DSPMUTE

35
71

DSP

IC801

DSPC56371AF180

73

SHUTDOWN/XOTW

5
6
7

1413 24 25
29
30
31

63

DIGITAL AUDIO

PWM PROCESSOR

TAS5508APAG

KEY&IR

37

IC3101

A

FLDAT

B

C

8

SELECTOR

IC4602

TC74VHC00FTS1

2 5

JA4603

DIGITAL DVD/DVR2 DVD/DVR1

PC/GAME SX-SW950DTV DVD

D

JA4602

GP1FAV51RKBF

DIGITAL INPUT

(OPT) (COAX)(OPT)

FL ASSY

4

12

JA4601

GP1FAV51RKBF

VKB1159

DIGSEL

(AWU8271)

S5961 S5962 S5963 S5964 S5965

FL TUBE

V5901

AAV7104

VOL+VOL-STANDBY/ON

SELECTOR

IC5901

IC5902
GP1UM27XK0VF

IR

FL DRIVER

PT6315

SURROUNDINPUT

RKN1004

JA5951

SR OUT

CN5901 CN5651

XKP3077 XKP3066

VE+5

1

XFLCS

FLCK

FLDC-

FLDC+

GNDD

KEY1

VFDP

GNDS
GNDS

KEY2

3

5

7

9

10

11

12

13

FLDATA

REMOCON

TAS5112ADCA

AKE7116

CN3211

2

4

6

8

PWM7.8

23-25 23-25 23-25

POWER IC

IC3401

505134

464738

+

-

SW C

PWM2.4

POWER IC

IC3301

TAS5112ADCA

35

39

+++++

--

CONNECT ASSY

C

34

35

50

51

38

39

46

47

---

FR SL

SR

(AWU8272)

13

12

11

10

9

8

7

6

5

4

3

2

1

PWM1.3

POWER IC

IC3201

TAS5112ADCA

34

35

50

51

38

39

46

47

FL

CN5652

AKP7131

7

11

5

8
9

6

12

10

IR

CN5601

AKP7131

1112

98

10

675

43 12

1.GNDD

2.GNDD

3.VFDP

4.KEY2

5.FLDATA

6.REMOCON

7.XFLCS

8.FLCK

9.VE+5

10.KEY1

1
2
3
4

ADE7113

11.F+

12.F-

D

E

56

SX-SW77

F

13

7

8

1234

3.2 MAIN ASSY (1/5)

A

VS+3R3

B

C

D

E

10.KEY1

F

11.F+

12.F-

A 1/5

14

IC5502

RESET

PST3245

5

4

VU+5

123

R5505

10k

R5506

STBY

VE+5

*

R5513

MODEL

*

DESTINATION

VE+5

C5524
10/50

C5525

R5515

B

STBY

STBY

VFLDC+

C5606

C5607

VFLDC-

CN5652

C

CHASSIS

1.GNDD

2.GNDD

3.VFDP

4.KEY2

5.FLDATA

6.REMOCON

7.XFLCS

8.FLCK

9.VE+5

VFDP

R5584

RAB4C221J

878584

86

220

R5592

RAB4C221J

898887

86

909192

939594

(FREQCONT1)

VSS3

VDD3

(SWMIX)

FLASHDO

FLASHCLK

(DTSMIX)

IC5501

PDC128A

LC875BJ0A

FLASHE/D

BEATCUT2

BEATCUT1

(PWRERR)

PWRCONT2

(PWRCONT1)

(FREQCONT2)

FLCONT

µ-COM

NC

DSPHREQ

VSS4NCVDD4NCSTEST

393738364041424543444647484950

C5539

0.1/16

Q1410

STBY

10k

B

D5501

DAP202K
2
1

10k

R5527

NC

R5537

RAB4C221J

10k

R5543

D1412

1SS355

(2/2)

UMD2N

Q5502

DTC124EUA

3

FLDAT

NC

XFLCS

UTEST

XDSPSS

XDSPRST

220

46

10k

R5544

R1411

10k

E2

C2

Q5503

(2/2)

UMD2N

E2

C2

B2

B

Q5503 Q5504

(1/2)

STBY

STBY

STBY

C5582

C5581

100/16

R5583

R5581

R5582

8281838584

C5579

0.01

XOTW

(DC DET)

SHUTDWN

XADPDN

INPUTSELA

DIGSEL

XDAMUTE

XDAPDN
XDARST

EEP_DI

DIRERR

TXIDATA

RDSDATA

RDSPOW

TXODATA

EEP_SK

D1402

DAN202K

B2

C5577

76 7578 777980

0.01

(PSVC)

C5518

697071727374

KEY1

0.01

NC

62636466 6568 67

TXCLK

NC
EEP_DO
EEP_CS

57 56585961 60

VSS2

VDD2

NC

53 52 515455

NC

TXCE

FLCLK

GNDD

UTEST

SHORT for

STEST

TEST POINT

2SA1576A(QR)

1

3

2

(1/2)

Q1410

UMD2N

C

B

E

D1410

UDZS15(B)

VFDP

10k

R5528

C

E

C

E

UMD2N DTA124EUA

VE+5

Q1402

1
R5580

R5579

R5520

R5518

R5562

R5557

C5556

0.1/16

B

KN5501

VNF1109

0.1/16
CHASSIS GND

R5577
R5578

R5573

RAB4C221J

10k

220

R5561

220

R5549

220

VS+5

Q1401

2SA1576A(QR)

12k

R1406

R1404

STBY

220

STBY
STBY

RAB4C221J

220

R5570

220

R5567

220

RAB4C221J

1k

RAB4C221J

RAB4C221J

VS+12

4.7k

R1407

R1403

10k

XDSPMUTE

DSPMUTE

XDAMUTE

R1405

10k

47k

10k

R5575

220

R1401

R1402

ADMD

10k

R5574

15k

D1401

10k

79

77
76
75
74

72
71
70

69

66
65
64
62

61

52
51
50
49

33

35

72

87
86
96

1SS355

STBY

C5507

R5507

*

*

R5516 R5514

VU+5

47k

R5524

C

Q5525
DTC143EUA

E

STBY

STBY

UDZS8R2(B)CHUDZS8R2(B)

D5601

C5601

C5608

STBY

0

100p

R5508

2.2k

11

7

5

1

D5602

GNDD

VE+5

8

243

C5602

9

CH

100p

12

10

6

D5603

C5508

0.01

R5517

C5519

C5521
C5522

C5523

C5526

CH

UDZS8R2(B)

100p

C5603

10k

0.01

0.01

STBY

23

100p

24

CH

25

100p

CH

DSP

STBY

C5605

XFLCS
FLCLK

CN5601

AKP7131

CH

UDZS8R2(B)

100p

C5604

D5604

50
51

69

19

49

CH

100p

C5609

R5501

6
7

VU+5

X5501

ASS7034

10MHz

R5519

19

21

R5521

22

R5522
STBY

R5523

27
28

R5525

UCOM

VS+5

22

XPROTECT

KEY1
RMC
KEY2

FLDAT

D5605

UDZS8R2(B)

R5502
R5503
R5504

C5509

STBY

220

RAB4C221J

STBY

R1416

E2

GNDD

STBY

R5511

220

220

220

67

DIRERR

R5529

C2

220
220
220

B

100

220

R5594

NC
NC
NC

PDNDET

564321

P_ON
RDSCLK
REMOCON
XRESET
XT1
XT2

0.1/16

VSS1

121110978

CF1
CF2
VDD1
SIMUKE
MODEL
NC

18 191716151413

NC
KEY2
NC
PCONFIG
XPROTECT
DSPDI

24 2523222120

DSPDO
DSPCK
NC
DASDA

28 29 302726

DASCK
NC
NC

VS+3R3

10k

R1415

STBY

C1415

D1415

DSP MUTE

220

Q5501
(2/2)
UMD2N

B2

10k

R5526

C

E

99

98

220

220

STBY

R5595

R5596

R5597

989796

99

100

3231343533

220

R5530

33

PROTECT

Q1413

DTC124EUA

UDZS4R7(B)

Q5501
(1/2)
UMD2N

94

96

220

R5613

FANCONT

(DMUTECHECK)

DIRDO

NC

XDSPMUTE

(LED)

220

R5532

35

220

TXPOWER

XDIRCS

XDIRRST

NC

ADMD

XDEC MUTE

220

220

R5535

R5536

374538

STBY

C1413

R5531

C

E

SX-SW77

1234

5678

67

REMOCON

7
RMC

R5553

POWER

SUPPLY

5.06

Modulator µcom

VS+3R3

STBY

C1203

84

PWRCONT2

85

FLCONT

FAN VOLTAGE TABLE

ROTATION

LOW

Not Digital Stream.
(The Analog IN is excluded)

LOW
Analog IN (VOL19 or less)

HIGH
VOL20 or more

Destination WY,WV KU

*

3/5

4-C1

UCOM

A

DSP

3-D2

2/5-5/5

A

R5513
R5515

*

MODEL ALL

R5514
R5516

47k

47k

47k

*
*

SR OUT

D5951

0.1/16

STBY

GNDD

L5951

QTL1013

C5951

1SS355

C

DTC124EUA

E

Q5951

R5804

VSFAN

22k

R5805

47k

R5554

47k

1
2
3
4

CH

EEPROM

IC5503

BR93L46RFJ-W

CS
SK
DI
DO

47p

C5549

SR OUT

TEST

VCC

GND

NC

JA5951

RKN1004

8
7
6
5

2
3
1

C5550

4.98

SR

VS+5

D1301

STBY

FL

1SS355

B2

VFLDC-

VFLDC+

C

Q1301

VFDP

Q1301
UMF21N

B

R1302

C2

(2/2)

UMF21N

(1/2)

560

E2

STBY

E

1/10W

R5602

6.8k

47k

R1301

Q5601

2SA1602A(EF)

-19.10

-25.30

GNDF

GNDD

VU+5

C1505

100/16

L1501

LFEA220J

22uH

C1501

POWER

VSF+12

VSFAN

VSF+12

VSFAN

VSF+12

VSFAN

µcom

FL DRIVER

VE+5

0.01

C1502

R5606

R5607

VOLTAGE

12.3

13.1

13.0

12.2

0.1/16

STBY

6.7

7.4

D1501

0

56

2SA1576A(QR)

D5952

B

1SS355 1k

VS+12

1k

VOLTAGE TABLE

D5608 D5607

1SS355 1SS355

C5610

100/16

3.31

-22.70

R5603
100k

SX-SW77

R5951

Q5952

GNDD

GNDD

UMF21N

R5601
100k

4.7k

R5952

Q5604

R5605

E

C

R5953

22k

22k

R5801

R5803

Q5803
2SC4081(QR)

VE+5

Q5804

2SC4081(QR)

22k

R5806

FAN

C

B2

(2/2)

Q5603
2SC4081(QR)

680

B

10k

1SS355

D5801

UDZS3R9(B)

Q5604

UMF21N

B

3.3k

R5612

C2

E2

R5608

R5955

R5610

560

R5609

560

R5614

560

D5606

E

0

VE+5

100k

R5954

3.9k

(1/2)

D5609

1SS355

47k

R5611

5.08

R5604

STBY

Q5602

2SA1602A(EF)

A 1/5

MAIN ASSY

(WYXCN,WVXCN:AWK7883)

(KUXCN:AWK7884)

SQ : CKSQ**(2125size)
CH : CCSRCH(1608size)

(others : CKSRYB(1608size))

JQ : CEJQ

(others : CEAT)

1/8W : RS1/8S***J(3216size)

1/10W : RS1/10S***J(2125size)

(others : RS1/16S***J(1608size)

• It will be described in .

• It may fluctuate by the product.

VSFAN

TUNER

12.03

VSF+12

otherwise specified

CN5602

GNDF

CN1001

GNDDGNDF

B2B-PH-K-S

1

2

B11B-PH-K-S

VSF+12

1

VS+12

2

BEAT CUT

3

VE+5

4

GNDD

5

VS+3R3

6

POWER CONT

7

GNDD

8

FL DC-

9

FL DC+

10

VFDP

11

KN1001

VNF1109

1

FAN +

GNDF

CHASSIS GND

VS+12

Q5801

2SA1576A(QR)

150

R5802

FAN

FAN

VOLTAGE TABLE

7

NOTES

All Capacitors are in p-pF or uF
unless otherwise specified

Ratings : Capacity(uF)/Voltage(V)
Rated Voltage : 50V unless

All Resistors are in k-k Ω, M-M Ω or Ω

Reference voltage value

BEAT CUT

AUDIO BUFFER

INPUT SELECTOR

VS+12

FAN (VXM1121)

CN3

E

A 1/5

15

8

A

B

C

D

E

F

1234

3.3 MAIN ASSY (2/5)

A

3001
AKB7143

3

2

ANALOG
INPUT

L

R

1

B

C

C3005

C3006

CH

CH

R3001

330

220p

220p

R3002

330

C3007

C3008

STBY

STBY

GNDD

R3003

R3004

C3011 R3011

10/50 27k

100k

100k

C3012 R3012

27k10/50

7dB ATT

VREF

22k

R3013

22k

R3014

(A)(A)

(TX)(TX)

47k

R3008

(TX)

TC4052BFN

VSS

VEE

IC3001

A

B

9

ANALOG

INPUT

SELECTOR

FUNCTIONA
ANALOG INL

TUNERH

78564

10131211151416

INHY3Y1

X3

X0

Y(Lch)

X(Rch)

X1

312

Y2

Y0

X2

(A)

VDD

VS+12

R3007

0

0.01

C3001

R3009

0

C3003

C3004

6

STBY

5

220k

R3021

220k

R3022

3

STBY

2

-

(1/2)

+

+

(2/2)

-

C3021
47/16

8

7

4

IC3002
BA4558F-HT

C3023

IC3002

BA4558F-HT

4

1

8

C3022

0.1/16

VREF

0.1/16

R3023

C3024

R3024

10

VSA+5

47/16

10

0

R3025R3026

STBY

D

E

F

16

UCOM

A

CN5701

9604S-11C

F

CE

2

DI

CLK

4

DO
GND
TXL

6

+9V

TXR

8
VSM
RDS

10

GND

A 2/5

Q3001

B

R5704

220

Q5701

2SC4081(QR)

C

E

GNDD

R5706

100

R5703

4.7k

C5706

65

RDS DATA

100

R5710

C5719
10/50

C5713

0.01
4700p

C5716

WY,WV MODEL ONLY

560p

IC5701

1
2
3
4
5
6
7
8

CH

QUAL
RDSDATA
VREF
RDS
VDD1
VSS1
VSS3
CMP

RDS

BU1924FS

RDSCLK

NC
XO

XI

VDD2

VSS2

T2
T1

6

RDSCLK

C5712

X5701

0.01

C5715

27p

C5714

16
15
14

ASS7004

4.332MHz

13
12
11
10
9

27p

C5720

64

RDSPOW

VS+5

CH

CH

47/16

1/5

1

3

5

7

9

11

GNDD

2.7k

(TX)

R5711

C5705

2.7k

R5712

STBY

C5704

R5714
R5715
R5716
R5717

R5718

WY,WV

STBY

R5701

R5702

0

R5719

0

only

2.7k

2.7k

GNDD

0
0
0
0

WY,WV
only

CH

100p

C5701

STBY

C5709

STBY

C5702

52
62
61
66

CH

100p

C5703

C3019
10/50

C3020
10/50

2SD1858X(QR)

Q5703

STBY

R5705

C5707

VS+12

1000p

R3019

R3020

R5708

0

C5708

47k

47k

D5701

47/16

DTC124EUA

470

R5707

UDZS10(B)

INPUTSELA

75

SX-SW77

1234

5678

C3025

10/50

C3026

10/50

5.04

VSA+5

0

R3041

3

D3001

STBY

12

12

3

D3002

STBY

VSA+5 VS+12

IC3004

BA178M05FP

OUT IN

C3053

0.1/16

31

2

C3052

0.1/16

47/16

C3054

C3043

STBY

C3051

C3044

STBY

R3053

C3049

0.1/16

1k

STBY

C3050

0.1/16

C3041

STBY

R3029

R3030

C3042

0.1/16

100

100

R3048

0.01

C3027

0

A 2/5

MAIN ASSY

(WYXCN,WVXCN:AWK7883)

(KUXCN:AWK7884)

A/D

IC3003

PCM1803DB

0.01

C3028

STBY

C3048

10

1

VINL

2

VINR

3

VREF1

4

VREF2

5

VCC

6

AGND

7

PDWN

8

BYPAS

9

TEST
LRCK

MODE1
MODE0

FMT1
FMT0

OSR

SCKI

VDD

DGND

DOUT

BCK

20
19
18
17
16
15
14
13
12
11

R3043

R3044

C3046

0.1/16

0

R3052

STBY

R3051
R3049

R3050

STBY

C3045

R3045

0

47

MCLK

(AD)

100

ADDATA

100

100

R3046

0

Q3041

2SA1576A(QR)

BCK

LRCK

R3047

AUDIO

VS+3D

10k

AUDIO

R3042

3/5, 4/5A

STBY

A

B

C

GNDD

(A)

: AUDIO SIGNAL ROUTE (ANALOG IN)

(TX)

: AUDIO SIGNAL ROUTE (FM/AM)
: AUDIO SIGNAL ROUTE

(AD)

: AUDIO DATA SIGNAL ROUTE

XADPDN

76

TXPOWER

94

NOTES

All Capacitors are in p-pF or uF
unless otherwise specified

Ratings : Capacity(uF)/Voltage(V)
Rated Voltage : 50V unless

SQ : CKSQ**(2125size)
CH : CCSRCH(1608size)

(others : CKSRYB(1608size))

JQ : CEJQ

(others : CEAT)

All Resistors are in k-k Ω, M-M Ω or Ω

1/8W : RS1/8S***J(3216size)

1/10W : RS1/10S***J(2125size)

(others : RS1/16S***J(1608size)

otherwise specified

GNDD

UCOM

Q3042
DTC124EUA

STBY

D

E

F

56

SX-SW77

A 2/5

17

7

8

1234

3.4 MAIN ASSY (3/5)

A

AUDIO

B

FDTI

CDTO
SDTO
FDTO

C

D

NOTES

E

All Capacitors are in p-pF or uF
unless otherwise specified

Ratings : Capacity(uF)/Voltage(V)
Rated Voltage : 50V unless

(others : CKSRYB(1608size))

(others : CEAT)

All Resistors are in k-k Ω, M-M Ω or Ω

F

(others : RS1/16S***J(1608size)

(AD)

(AD)

(AD)

(AD)

100

R802

RAB4C101J

10k

10k

R806

R805

SQ : CKSQ**(2125size)
CH : CCSRCH(1608size)

JQ : CEJQ
AL : CEAL

1/8W : RS1/8S***J(3216size)

1/10W : RS1/10S***J(2125size)

C804

10k

R804

otherwise specified

C802

C806

0.1/16

1/6.3

R807

47k

0.1/16

C801

C803

C805

RAB4C470J

R801

47

470p

1/6.3

CH

470p

DSP RST

8

R822

1M

X801

CH 6p

DRCK

QTL1013

C820

DSP CK

25

L952

37

46

DIDI

VS+3D

CH 6p

DSP DI

23

100

R965

RAB4C101J

BCK

LRCK

R837

47

807778

79

FST

FSR

SDI0

1

SDI1

2

GNDIO

CH

3

VDDIO

4

SDO3

5

SDO2

6

SDO1

7

SDO0

8

VDDCO

9

PF8

10

PF6

11

PF7

12

GNDCO

13

PF2

14

PF3

15

PF4

16

PF5

17

VDDIO

18

PF1

19

PF0
GNDSP

20

PF10

SCAN

PF9

23

222124

C807

470p

CH

C808

0.1/16

5-A4

DSP

1/5A

C833 C831

0.1/16

C832

470p

CH

75

76

SCKT

SCKR

VDDIO

VDDIO

GNDIO

PB0

25

R808

STBY

R809

MCLK

47

R836

C830

74

71

72

73

PC2

HCKT

GNDIO

VDDCO

IC801

DSPC56371AF180

DSP

GNDCO

PB1

TDO

VDDCO

28

2726303129

STBY

C809

1/6.3

C810

1/6.3

47k

R810

TP1 TP3

TP2

JTAG

686970

100

R811

676665

PE2

MOSI

MISO

R813

100

R812

232524

DSP DI

C828

470p

CH

PE5

GNDIO

4.7k

100

R814

R815

DSP DO

DSP CK

C829

64

VDDIO

COMMOUT0
COMMOUT1

L801

100

45

DSP SS

1/6.3

1/6.3

BUSY

96DTS

GNDCO

TDI

TMS

TCKSSSCK

323334373635383940

TP5

TP4

0.1/16

PE0

MCK_STD

HREQ

L804

2.2k

R852

626163

PE1

FST_1

SCKT_1

SDI0_1
SDI1_1

MUTE

GNDCO

VDDCO

MODA

MODB
MODC
MODD

RESET

PINIT

EXTAL

VDDPD
GNDPD
GNDPP

GNDPA

VDDPA

C814

470p

CH

C815

0.1/16

QTL1013

100

R816

38

DICS

DSP HREQ

R963

R964

DIR CS

99

VS+1R2

R842

ATL7002

60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41

VDDPP

R817
10k
C813
STBY

C812
STBY

C811
STBY

DIRT

98

R962

STBY

100

100

AL

STBY

C835

100/10

C826

CH

C821 C823

R818

22

OSC

DIR RST

1

1A Vcc

2

1B

3

1Y

4

2A

5

2B

6

2Y

7

GND

R829

47k

1/6.3

1/6.3

C827

C824

1/6.3

470p 1/6.3

C822

0.1/16

QTL1013

L802

C817

0.1/16

C816

CH 470p

8

543

(3/3)

IC802

TC7WU04FU

IC951

TC74VHC08FTS1

5V  3.3V

Level Shifter

C951

CH 470p

C952

0.1/16

L803

ATL7002

100

R823

4B
4A
4Y
3B
3A
3Y

14
13
12
11
10
9
8

R841

STBY

C834

100/16

DSP

DEC MUTE

R824

C825

STBY

0.01
R825

100

IC802 IC802

(2/3) (1/3)

TC7WU04FU TC7WU04FU

7812 6

44

470

STBY

R819

R821

XSS3003

24.576MHz

C819

R820

STBY

A 3/5

18

SX-SW77

1234

DIGITAL

INPUTS

DVD/DVR1

(DIGITAL

COAX IN)

DVD/DVR2

(DIGITAL

OPT IN 1)

DIGITAL
(DIGITAL

OPT IN 2)

5678

VS+3D

JA4601
VKB1159

(AD)

1

2

C4602

JA4602
GP1FAV51RKBF

312

R4609

JA4603
GP1FAV51RKBF

321

R4611

COAX IN

L4601

QTL1013

220p

CH

(AD)(AD)

220

220

75

R4601

OPT IN

C4613

0.1/16

STBY

C4612

C4620

0.1/16

STBY

C4625

C4601

0.01

C4614

C4621

220p

C4603

VTL1076

100/16

VTL1076

100/16

C4608

L4603

R4610

L4604

R4612

L4602

VTL1076

R4602

47k

8

2

6

4

0.1/16

(1/3)

IC4601

TC7WU04FU

VS+5

C4615

0.1/16

100k

C4622

0.1/16

100k

R4603

(AD)

(AD)

2.2k

C4607
STBY

R4604

C4609

CH

0

22p

(2/3)

IC4601

TC7WU04FU

8

7

1

4

R4605

0

C4610

STBY

1
2
3
4
5
6
7

C4623

R4616

8

L4606

5

3

VTL1076

4

(3/3)

IC4601

TC7WU04FU

(AD)

IC4602

TC74VHC00FTS1

R4614
R4615

0

STBY

A 3/5

MAIN ASSY

(WYXCN,WVXCN:AWK7883)

(KUXCN:AWK7884)

R4607

330

47p

C4611

220
220

R4617

CH

L4605

VTL1076

14
13
12
11
10
9
8

0

STBY

C4627

0.01

C4626

R4613

1k

VS+3D2

DIGSEL

74

A

UCOM

1/5

UCOM

H
L

5-A4

OPT INDIGSEL

1
2

A

B

C

OSC

DSP

C611

C613
STBY

R616

10k

100/16

C615

L603

0.1/16

0.1/16

C616

QTL1013

DIR

DIR ERR

67

DIRT

DICS

C614
1000p

C612
STBY

2423222120191817161513

PDN

CSN

INT1

INT0

AVSS

470p

CH

C617

R

1324576108

R617

12k

AVDD

RX1

R618

AK4117VF

NC

22

R619

QTL1013

CH

L602

IC601

RX0

22

470p

C606

C610

STBY

DIDI

DRCK

CCLK

DVDD

0.1/16

C607

R612

CDTI

DVSS

R610

DIR DO

100

100

UOUT

CDTO

XTI

XTO

9

22

R609

R604

NC

LRCK

R605

STBY

22

14

11

100

R607

X601

MCKO

BICK

C608

STBY

STBY

C609

STBY

ADDATA

R608

DAUX

SDTO

12

R606

47

(AD)

(AD)

(AD)

MCLK

(AD)

47

100

LRCK

FDTI

BCK

AUDIO

1-A6,4-B1

(AD)

OPT IN

COAX IN

2/5, 4/5A

GNDD

(AD)

VS+5

D901

STBY

C904

STBY

IC901

BA30E00WHFP

EN

Vcc2

Vcc1

1342765

C901

0.1/16

GNDD

GNDD

(AD)

0.01

C4629

C4628

100/16

AD

DSP DSP

C902

100/16

VS+1R2VS+3D

GND

Vo1

R902

R901

Vo2

F%

F%

ADJ

2.7k

4.7k

3.30

KN901

STBY

CHASSIS GND

: AUDIO DATA SIGNAL ROUTE

C903

D

1.25

100/16

E

F

GNDD

56

SX-SW77

A 3/5

19

7

8

1234

3.5 MAIN ASSY (4/5)

A

DIGITAL AUDIO
PWM PROCESSOR

B

2/5, 3/5

A

AUDIO

1-A6,3-D5

VS+3R3

MCLK

1/5

A

UCOM

C

STBY

B5B-PH-K-S

VS+5

GNDD

5-A4

for control by PC

CN3171

SCL

SDA

RST

VS+5

1

2

3

4

5

R3183

R3184

R3185

D

STBY

IC3181

SN74AHC1G04DBV

3
4

IC3182

T-TPS3825-33DBVR

32
4

E

51

VS+3R3

0.1/16

C3181

2

15

0.1/16

C3182

R3181

4.7k

0

R3182

UCOM

R3153

0

XDARST

70

71

XDAPDN

35

DSPMUTE

R3103

R3113

R3105

1

4.7

0.01

C3105

3.3

R3152

10k

R3102
C3104

C3108

GNDA

220

0.1/16

C3107

10/16

0.1/16

AL

R3101

0.1/16

C3103

220

C3121

C3102

STBY

C3109

1000p

RAB4C221J

4.7k

R3151

0.01

C3122

STBY

R3104

220

RAB4C472J

C3111

0.1/16

C3101

0.1/16

10/16

C3110

AL

C3106

0.1/16

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

C3112

0.1/16

C3113

R3112

VRA_PLL

PLL_FLT_RET

PLL_FLTM

PLL_FLTP

AVSS

AVSS

VRD_PLL

AVSS_PLL

AVDD_PLL

VBGAP

/RESET

/HP_SEL

/PDN

/MUTE

DVDD

DVSS

CH

47

64 606263 61

XTL_IN

XTL_OUT

17 201918 21

X3101

ASS7062

R3106

15p

1M

22

0.1/16

C3119

C3120 R3111

10/16

AL

59 58 57 5456 55 53 52 51 50 49

PWM_P_5

PWM_P_6

PWM_M_5

PWM_M_6

PWM_HPML

MCLK

PWM_HPPL

PWM_HPMR

PWM_HPPR

RESERVED

IC3101

TAS5508APAG

VR_DPLL

OSC_CAP

RESERVED

RESERVED

RESERVED

23 2422 272625 28 29 30 3231

47

R3107

RAB4C470J

CH

C3114

15p

DVSS_PWM

DVDD_PWM

PWM_P_8

PWM_M_8

PWM_P_7

PWM_M_7

SIND2

NC

SDIN1

SDA

SCLK

LCRCK

SCL

SDIN4

(AD)

LRCK

BCK

(SW)

VR_PWM

PWM_P_4

PWM_M_4

PWM_P_3

PWM_M_3

PWM_P_2

PWM_M_2

PWM_P_1

PWM_M_1

/BKND_ERR

VR_DIG

SDIN3

(AD)

CDTO

SDTO

VALID

DVSS

DVDD

DVSS

DVSS

(C)

(AD)

FDTO

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

R3108

47

RAB4C470J

RESET CONTROL CIRCUIT

F

A 4/5

20

GNDD

0

R3154

27

28

DASDA

DASCK

0

R3155

SX-SW77

1234

PWM_P_8
PWM_M_8
PWM_P_7
PWM_M_7

(SR)

(SL)

(FR)

(FL)

0.1/16AL0.1/16

C3115

C3116

5678

NOTES

A

B

C

D

0.1/16

C3118

PWM_P_4
PWM_M_4
PWM_P_3
PWM_M_3
PWM_P_2
PWM_M_2
PWM_P_1
PWM_M_1
VALID

VS+3R34

C3117

10/16

R3110

0

R3109

1

SHUTDOWN

77

A 4/5

MAIN ASSY

(WYXCN,WVXCN:AWK7883)

(KUXCN:AWK7884)

POWER KONFIG
DETECT

V+B27

PCONFIG

21

D3191

UDZS4R7(B)

10k

R3197

C3191

R3196

2.2k

10/50

C3192

IC3191

BA10358F

8

1

4

R3194
100k

IC3191
BA10358F

6

8

-

7

5

+

0.1

4

R3195

100k

2

-

3

+

VG+12

C3163

10/50

R3192

5.6k

R3193

5.6k

C3162

ACN7112

ACN7112

Power Supply

IC3161

NJM78M12DL1A

OUT IN

31

0.1/16

2

All Capacitors are in p-pF or uF
unless otherwise specified

Ratings : Capacity(uF)/Voltage(V)
Rated Voltage : 50V unless

SQ : CKSQ**(2125size)
CH : CCSRCH(1608size)

(others : CKSRYB(1608size))

JQ : CEJQ
AL : CEAL

(others : CEAT)

All Resistors are in k-k Ω, M-M Ω or Ω

1/8W : RS1/8S***J(3216size)

1/10W : RS1/10S***J(2125size)

(others : RS1/16S***J(1608size)

PWM

R3191

0.1

R3199

0.1

C3161

2W

10/50

R3198

R3161

82

STBY

C3193

R3200

0.01

C3194

1/10W 3.3

V+B

1000P

CN3201

B2P-VH

otherwise specified

5/5A

2-A1

PWM

2

+B

GND

1

CN2

E

GNDD

AUDIO

STBY

(FL)

: AUDIO SIGNAL ROUTE (PWM)(Front Lch)

(FR)

: AUDIO SIGNAL ROUTE (PWM)(Front Rch)

(SL)

: AUDIO SIGNAL ROUTE(PWM)(Surround Lch)

(SR)

: AUDIO SIGNAL ROUTE(PWM)(Surround Rch)

(C)

: AUDIO SIGNAL ROUTE(PWM)(Center ch)

(SW)

: AUDIO SIGNAL ROUTE(PWM)(Sub Woofer ch)

(AD)

: AUDIO DATA SIGNAL ROUTE

SX-SW77

56

GNDD

E

F

A 4/5

21

7

8

1234

3.6 MAIN ASSY (5/5)

PWM

4-B6

77

79

77

79

4/5A

R3207 R3208

PWM_M_3
PWM_P_3

PWM_M_1
PWM_P_1
VALID

1

SHUTDOWN

XOTW

R3307

R3308

PWM_M_4
PWM_P_4

PWM_M_2
PWM_P_2
VALID

1

SHUTDOWN

XOTW

47k 4.7k

1

0.1/16

C3203

47k

4.7k

1

0.1/16

C3303

R3206

C3204

(FL)

R3204

R3203
R3202
R3201

R3306

C3304

R3303
R3302
R3301

STBY

0.1/16

R3205

STBY

0.1/16

R3305

(FR)

R3304

R3210

10k

R3310

10k

(SL)

100

R3209

C3201

1/16

(SR)

100

R3309

C3301

220

1k
1k
1k

220

1k
1k
1k

1/16

A

B

C

D

E

STBY

STBY

V+B27

STBY

C3224

1000/35

1.5
1/8W

R3214

ACN7141

2.7

R3240

1/8W

R3241

R3212

2.7

ACN7141

1/8W

1/8W

R3213

ACN7141

2.7

R3242

1/8W

R3243

R3211

ACN7141

2.7

1000/35

1000/35

1.5
1/8W

R3314

ACN7141

2.7

R3340

1/8W

R3341

R3312

2.7

ACN7141

1/8W

1/8W

R3313

ACN7141

2.7

R3342

1/8W

R3343

R3311

2.7

ACN7141

1000/35

R3228

18

18

18

18

R3227

C3223

C3324

R3328

18

18

18

18

R3327

C3323

3.3

C3218

1/8W

C3216

C3217

C3215

1/8W1.5

3.3

STBY

STBY

3.3

C3318

1/8W

C3316

C3317

C3315

1/8W1.5

3.3

STBY

0.01

1/10W

1/8W

1/10W

0.01

0.01

1/10W

1/8W

1/10W

0.01

C3226

SQ

SQ

SQ

SQ

C3225

C3326

SQ

SQ

SQ

SQ

C3325

0.033

0.033

0.033

0.033

0.033

0.033

0.033

0.033

1000p

C3228

0.1

(SL)

1SMA33CAT3G

D3214

1SMA33CAT3G

D3213

2

C3227

0.1

1000p

V+B27

V+B27

1000p

C3328

0.1

(SR)

1SMA33CAT3G

D3314

1SMA33CAT3G

D3313

2

C3327

0.1

1000p

V+B27

R3230
STBY

D3212

D3211

R3229
STBY

R3330
STBY

D3312

D3311

R3329
STBY

C3230

2

(FL)

C3229

C3330

2

(FR)

C3329

VG+12

STBY

L3202

10uH

43

1SMA33CAT3G

12
ATH7021

1SMA33CAT3G

L3201

10uH

43

12

ATH7021

STBY

VG+12

VG+12

STBY

L3302

10uH

43

1SMA33CAT3G

12
ATH7021

1SMA33CAT3G

L3301

10uH

43

12
ATH7021

STBY

VG+12

C3236

0.47/100

TL

C3232

C3234

C3235

0.47/100

TL

C3231

C3233

C3336

0.47/100

TL

C3332

C3334

C3335

0.47/100

TL

C3331

C3333

1/10W

R3238

0.1

0.1

R3234

R3232

4.7k

C3238C3240

1/10W

4.7k

R3236

1

0.01

0.01

1

C3250

C3248

STBY

STBY

(SL)

C3249

1

0.01

0.01

1

STBY

C3247

STBY

1/10W

R3237

0.1
R3233

C3239

4.7k

1/10W

C3237

R3231

0.1

R3235

4.7k

(FL)

1/10W

R3338

0.1
R3334

R3332

0.1

C3340

4.7k

1/10W

C3338

4.7k

R3336

1

0.01

0.01

1

C3350

C3348

STBY

STBY

(SR)

R3337

1/10W

0.1
R3333

R3331

0.1

C3339

4.7k

1/10W

C3337

4.7k

R3335

1

0.01

0.01

1

C3349

C3347

STBY

STBY

(FR)

PWM

C3246

1/10W

0.01

*L

R3218

C3214

SQ

0.1

C3241

330p

330pCHCH

C3212

0.1

R3216

R3217

C3213

0.1

SQ

C3243

330p CH

C3244

330p

C3211

0.1

R3215

C3245

*L

0.01

1/10W

C3346

1/10W

0.01

*L

R3318

C3314

0.1

C3341

330p CH

C3342

330p

C3312

0.1

R3316

R3317

C3313

0.1

C3343

330p CH

C3344

330p CH

C3311

0.1

R3315

C3345

*L

1/10W

C3222

SQ

1.5

1.5

CH

SQ

C3221

C3322

SQ

CH

SQ

1.5

1.5

SQ

SQ

C3321

0.01

820

820

GND

BST_A

PVDD_A

PVDD_A

OUT_A

OUT_A

GND

GND

OUT_B

PVDD_BBP

PVDD_B

BST_B

BST_C

PVDD_C

PVDD_C

OUT_C

GND

GND

OUT_D

OUT_D

PVDD_D

PVDD_D

GVDD

GND

GND

GVDD

BST_A

PVDD_A

PVDD_A

OUT_A

OUT_A

GND

GND

OUT_B

OUT_B

PVDD_B

PVDD_B

BST_B

BST_C

PVDD_C

PVDD_C

OUT_C

OUT_C

GND

GND

OUT_D

OUT_D

PVDD_D

PVDD_D

BST_D

GVDD

R3224

56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29

820

820

R3324 R3223

56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30

820

R3323

R3226

1/10W

R3225

1/10W

R3326

1/10W

R3325

1/10W

*L

C3242

*L

820

820

*L

*L

820

SQ

C3202

1/16

SQ

R3222

IC3201

STBY

TAS5112ADCA

1

GND

2

GND GVDD

3

GREG

4

DVDD

5

GND

6

DGND

7

GND

8

AP

9

AM

10

/RESET_AB

11

BM OUT_B

12
13

DREG

14

M1

15

M2

16

M3

17

DREG_RTN

18

CP OUT_C

19

CM

20

/RESET_CD

21

DM

22

DP

23

/SD_AB

24

/SD_CD

25

/OTW

26

GREG BST_D

27

GND

28

GND

R3221

STBY

GNDD

SQ

C3302

1/16

SQ

R3322

IC3301

STBY

TAS5112ADCA

1

GND

2

GND

3

GREG

4

DVDD

5

GND

6

DGND

7

GND

8

AP

9

AM

10

/RESET_AB

11

BM

12

BP

13

DREG

14

M1

15

M2

16

M3

17

DREG_RTN

18

CP

19

CM

20

/RESET_CD

21

DM

22

DP

23

/SD_AB

24

/SD_CD

25

/OTW

26

GREG

27

GND

28 29

GND GND

R3321

STBY

GNDD

F

22

UCOM

A 5/5

LAYOUT NOTE :
*L are PCB track inductors approx. 50mm long and 1mm wide

SX-SW77

1234