Pioneer SC-91 Service Manual

2015

MASTER
VOLUME

STANDBY/ON

INPUT
SELECTOR

SC-91

AV RECEIVER

SC-91

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

Model Type Power Requirement Remarks

SC-91 CUXJ AC 120V

ORDER NO.

RRV4604

For details, refer to "Important Check Points for good servicing".

PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, 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

K-FZV JUNE

2015 Printed in Japan

1

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.

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 schematics and on
the parts list in this Ser

vice Manua

l.
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.

Leakage
current
tester

Reading should
not be above

0.5 mA

Device
under
test

Test all
exposed metal
surfaces

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

Earth
ground

AC Leakage Test

(FOR USA MODEL ONLY)

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.

56 noitisoporP - 6.94252 noitceS edoC ytefaS & htlaeH

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.

This service manual is intended for qualified service technicians ; it is not meant for the casual do-it­yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.

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SAFETY INFORMATION

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CONTENTS

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

1. SERVICE PRECAUTIONS....................................................................................................................................................5

1.1 NOTES ON SOLDERING...............................................................................................................................................5

1.2 NOTES ON REPLACING ...............................................................................................................................................5

1.3 CAUTION........................................................................................................................................................................5

1.4 NOTES ON ASSEMBLING.............................................................................................................................................6

2. SPECIFICATIONS................................................................................................................................................................. 7

2.1 SPECIFICATIONS .......................................................................................................................................................... 7

3. BASIC ITEMS FOR SERVICE ..............................................................................................................................................9

3.1 CHECK POINTS AFTER SERVICING ........................................................................................................................... 9

3.2 PCB LOCATIONS.........................................................................................................................................................10

3.3 JIGS LIST .....................................................................................................................................................................12

4. BLOCK DIAGRAM ..............................................................................................................................................................14

4.1 OVERALL WIRING DIAGRAM .....................................................................................................................................14

4.2 BLOCK DIAGRAM FOR AUDIO BLOCK...................................................................................................................... 16

4.3 BLOCK DIAGRAM FOR DIGITAL MAIN VIDEO BLOCK ............................................................................................. 18

4.4 BLOCK DIAGRAM FOR DIGITAL MAIN AUDIO BLOCK .............................................................................................20

4.5 BLOCK DIAGRAM FOR VIDEO BLOCK...................................................................................................................... 22

4.6 BLOCK DIAGRAM FOR POWER BLOCK (1) .............................................................................................................. 24

4.7 BLOCK DIAGRAM FOR POWER BLOCK (2) .............................................................................................................. 26

5. DIAGNOSIS ........................................................................................................................................................................ 28

5.1 DIAGNOSIS FLOWCHART ..........................................................................................................................................28

5.2 CIRCUIT DESCRIPTION..............................................................................................................................................37

5.3 CONFIRMATION OF THE NETWORK MODULE......................................................................................................... 46

6. SERVICE MODE.................................................................................................................................................................48

7. DISASSEMBLY ...................................................................................................................................................................51

8. EACH SETTING AND ADJUSTMENT................................................................................................................................73

8.1 ADJUSTMENT REQUIRED WHEN THE UNIT IS REPAIRED OR REPLACED ..........................................................73

8.2 HOW TO SAVE AND LOAD THE SETTING USING BACKUP FUNCTION WITH USB MEMORY..............................74

8.3 REGION WRITING.......................................................................................................................................................75

W TO UPDATE FIRMWARE.................................................................................................................................... 76

4 HO

8.

9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................80

9.1 PACKING SECTION .....................................................................................................................................................80

9.2 EXTERIOR SECTION ..................................................................................................................................................82

9.3 REAR SECTION...........................................................................................................................................................84

9.4 CHASSIS SECTION..................................................................................................................................................... 86

9.5 FRONT SECTION ........................................................................................................................................................88

10. SCHEMATIC DIAGRAM....................................................................................................................................................90

10.1 AUDIO ASSY (1/2)......................................................................................................................................................90

10.2 AUDIO ASSY (2/2)......................................................................................................................................................92

10.3 FILTER_S ASSY (1/2) ................................................................................................................................................94

10.4 FILTER_S ASSY (2/2) ................................................................................................................................................96

10.5 FRONT HDMI USB ASSY ..........................................................................................................................................98

10.6 USB RECT_S ASSY and OPT COAX_S ASSY.......................................................................................................100

10.7 DIGITAL MAIN_L ASSY (1/11).................................................................................................................................102

10.8 DIGITAL MAIN_L ASSY (2/11).................................................................................................................................104

10.9 DIGITAL MAIN_L ASSY (3/11).................................................................................................................................106

10.10 DIGITAL MAIN_L ASSY (4/11)...............................................................................................................................108

10.11 DIGITAL MAIN_L ASSY (5/11)...............................................................................................................................110

10.12 DIGITAL MAIN_L ASSY (6/11)...............................................................................................................................112

MAIN_L ASSY (7/11) ...............................................................................................................................114

10.13 DIGIT

10.14 DIGITAL MAIN_L ASSY (8/11)...............................................................................................................................116

10.15 DIGITAL MAIN_L ASSY (9/11)...............................................................................................................................118

10.16 DIGITAL MAIN_L ASSY (10/11) .............................................................................................................................120

10.17 DIGITAL MAIN_L ASSY (11/11) .............................................................................................................................122

10.18 INTERFACE_S ASSY............................................................................................................................................. 124

10.19 COMPONENT ASSY..............................................................................................................................................126

10.20 COMPOSITE ASSY................................................................................................................................................128

10.21 MIC HP ASSY.........................................................................................................................................................130

10.22 DISPLAY ASSY ......................................................................................................................................................132

10.23 VOL ASSY..............................................................................................................................................................134

10.24 POWER SW ASSY and ENCODER ASSY ............................................................................................................135

10.25 IR

10.26 IR BUFFER_S ASSY (2/2) .....................................................................................................................................138

10.27 BUFFER GND ASSY and IR_INTERFACE_S ASSY ............................................................................................. 140

AL

UFFER_S ASSY (1/2) ..................................................................................................................................... 136

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10.28 D AMP_SS ASSY (1/6)...........................................................................................................................................142

10.29 D AMP_SS ASSY (2/6)...........................................................................................................................................144

10.30 D AMP_SS ASSY (3/6)...........................................................................................................................................146

10.31 D AMP_SS ASSY (4/6)...........................................................................................................................................148

A

10.32 D AMP_SS ASSY (5/6)...........................................................................................................................................150

10.33 D AMP_SS ASSY (6/6)...........................................................................................................................................152

10.34 PRIMARY ASSY .....................................................................................................................................................154

10.35 A-REG_S ASSY......................................................................................................................................................156

10.36 IR REG_S ASSY (1/2) ............................................................................................................................................158

10.37 IR REG_S ASSY (2/2) ............................................................................................................................................160

10.38 V-REG_S ASSY (1/3)..............................................................................................................................................161

10.39 V-REG_S ASSY (2/3)..............................................................................................................................................162

-REG_S ASSY (3/3)..............................................................................................................................................164

V

10.40

10.41 VREG CHILD_S ASSY ...........................................................................................................................................166

10.42 CONNECT_S ASSY ...............................................................................................................................................167

B

10.43 A-DAC BRIDGE ASSY............................................................................................................................................168

10.44 D-AUDIO BRIDGE ASSY........................................................................................................................................169

10.45 D-FILTER BRIDGE_S ASSY...................................................................................................................................170

10.46 PRE BRIDGE_S ASSY...........................................................................................................................................171

10.47 FAN CONNECT, MIC HP GUARD, BIND DM CABLE_S and P WIRE GUARD_S ASSYS ....................................172

10.48 FFC GUARD_S, VREG GUARD, BINDFAN CABLE_S, TRANS VREG STYL_S, PANEL GUARD and IR EDGE

GUARD_S ASSYS ..................................................................................................................................................173

11. PCB CONNECTION DIAGRAM ......................................................................................................................................174

11.1 AUDIO ASSY ............................................................................................................................................................174

11.2 FILTER_S ASSY .......................................................................................................................................................178

.3 FRONT HDMI USB ASSY, USB RECT_S ASSY and OPT COAX_S ASSY ............................................................180

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11.4 DIGITAL MAIN_L ASSY............................................................................................................................................182

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11.5 INTERFACE_S ASSY ...............................................................................................................................................186

11.6 COMPONENT ASSY ................................................................................................................................................188

11.7 COMPOSITE ASSY and MIC HP ASSY...................................................................................................................190

11.8 DISPLAY, VOL, POWER SW and ENCODER ASSYS..............................................................................................192

11.9 IR BUFFER_S ASSY ................................................................................................................................................196

11.10 BUFFER GND ASSY and IR INTERFACE_S ASSY...............................................................................................200

11.11 D AMP_SS ASSY ...................................................................................................................................................202

11.12 PRIMARY ASSY .....................................................................................................................................................206

11.13 A-REG_S ASSY and IR REG_S ASSY ..................................................................................................................208

11.14 V-REG_S ASSY ......................................................................................................................................................212

11.15 VREG CHILD_S, CONNECT_S and A-DAC BRIDGE ASSYS...............................................................................214

11.16 D-AUDIO BRIDGE, D-FILTER BRIDGE_S, PRE BRIDGE_S and FAN CONNECT ASSYS ..................................216

D

11.17 MIC HP GUARD, BIND DM CABLE_S and P WIRE GUARD_S ASSYS................................................................218

11.18 FFC GUARD_S, VREG GUARD and

BINDFAN CABLE_S ASSYS .......................................................................219

11.19 TRANS VREG STYL_S, PANEL GUARD and IR EDGE GUARD_S ASSYS .........................................................220

12. PCB PARTS LIST ............................................................................................................................................................221

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• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
Do NOT use a soldering iron whose tip temperature cannot be controlled.

The part listed below is difficult to replace as a discrete component part.
When the part listed in the table is defective, replace whole Assy.

ASSY NAME

PCB ASSY

Par t No.

Ref No. FUNCTION Part No. Remarks

IC451 3CH SW POWER SUPPLY IC TPS65251RHA-TLB

IC with heat-pad

IC1602 HDMI INTERFACE IC MN864787-K
IC9002 DSP IC D808K013DPTP456

DSP IC D808K013DPTP456-K

-K

IC9703

IC9602 HDMI SW IC SII9587CNUC-3-K

DIGITAL

MAIN_L

ASSY

AWX2021

Q4101
Q4102
Q4201
Q4202
Q4301
Q4302
Q4401
Q4402
Q4501
Q4502
Q4601
Q4602
Q4701

D AMP_SS

ASSY

AWH7116

Q4702

FET IRF6775MPBFS1-TRB Pins are under the parts side

DISPLAY

ASSY

AWX2025 IC6001 FLASH BLANK UC IC R5F100MHAFA-K Software is not written

• Discharging

Before starting the diagnosis, wait for three minutes until the electricity of the unit is discharged.

• Ground Points

Please refer to “Ground Points”.

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1. SERVICE PRECAUTIONS

1.1 NOTES ON SOLDERING

1.2 NOTES ON REPLACING

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B

1.3 CAUTION

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1

IR BUFFER_S ASSY

Cover/IR

D AMP_SS ASSY

BUFFER GND ASSY

• Front View

Rear Panel/91U

FAN CONNECT ASSY

Accessory of Panel/CU

Note : The right and left positions for the attachment positioning of digital amplifier block are gradual, however, adjust the

front and back positions correctly. For the positioning procedure, refer to "7. DISASSEMBLY".

When assembling the digital amplifier block, please note the following points of screws to prevent from short-circuit.

The following 7 points of screws must always be used AMZ30P060FTC

Points to be watched for swarf

If a screw at any of these points needs to be removed for service,
be sure to check that the swarf is not on the screw before refastening.

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1.4 NOTES ON ASSEMBLING

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Amplifier section

Continuous average power output*

8 Ω ..................................................................................................................................130 W** per channel

6 Ω ................................................................................................................................ 170 W*** per channel

* Measured pursuant to the Federal Trade Commission’s Trade Regulation rule on Power Output Claims for
Amplifiers
** 1 kHz with no more than 0.08 %**** total harmonic distortion
*** 1 kHz with no more than 1 %**** total harmonic distortion
**** Measured by Audio Spectrum Analyzer

Multi channel simultaneous power output (1 kHz, 1 %, 8 Ω)

7 ch total ............................................................................................................................................... 660 W

Continuous Power Output (1 kHz, 8 Ω, 0.08 %)

Front .......................................................................................................................................130 W + 130 W

Center ................................................................................................................................................... 130 W

Surround ................................................................................................................................ 130 W + 130 W

Surround back ........................................................................................................................ 130 W + 130 W

Continuous Power Output (1 kHz, 6 Ω, 1.0 %)

Front .......................................................................................................................................170 W + 170 W

Center ................................................................................................................................................... 170 W

Surround ................................................................................................................................ 170 W + 170 W

Surround back ........................................................................................................................ 170 W + 170 W

Continuous Power Output (1 kHz, 4 Ω, 1.0 %)

Front ...................................................................................................................................... 210 W + 210 W

Center ................................................................................................................................................... 210 W

Surround ................................................................................................................................ 210 W + 210 W

Surround back ........................................................................................................................ 210 W + 210 W

Total harmonic distortion ............................................................................. 0.04 % (1 kHz, 110 W + 110 W, 8 Ω)

Guaranteed speaker impedance .......................................................................................................... 4 Ω to 16 Ω

Audio Section

Input (Sensitivity/Impedance)

LINE ........................................................................................................................................ 380 mV/47 kΩ

Output (Level/Impedance)

REC ........................................................................................................................................ 380 mV/2.2 kΩ

Signal-to-Noise Ratio (IHF, short circuited, A network)

LINE .....................................................................................................................................................101 dB

Tuner Section

Frequency Range (FM) ........................................................................................................ 87.5 MHz to 108 MHz

Antenna Input (FM) ..................................................................................................................... 75 Ω unbalanced

Frequency Range (AM) ........................................................................................................ 530 kHz to 1700 kHz

Antenna (AM) ................................................................................................................. Loop antenna (balanced)

Video Section

Signal level

Composite Video ........................................................................................................................1 Vp-p (75 Ω)

Component Video .........................................................................Y: 1.0 Vp-p (75 Ω), PB/PR: 0.7 Vp-p (75 Ω)

Corresponding maximum resolution

Component Video .......................................................................................................................1080i (1125i)

Bluetooth Section

Version ...................................................................................................... Bluetooth Specification Ver. 2.1 + EDR

Output ................................................................................................................... Bluetooth Specification Class 2

Estimated line-of-sight transmission distance* ..................................................................................... About 10 m

*The line-of-sight transmission distance is an estimate. Actual transmission distances supported may differ
depending on surrounding conditions.

Frequency range ....................................................................................................................................... 2.4 GHz

Supported Bluetooth profiles ........................................................................................................... A2DP, AVRCP

Supported Codec ...................................................................................................... SBC (Subband Codec), AAC

Digital In/Out Section

HDMI terminal ............................................................................................................................. 19-pin (Not DVI)

HDMI output type .................................................................................................................................. 5 V, 55 mA

HDMI input/MHL terminal ................................................................................................................... 5 V, 900 mA

USB terminal ............................................................................................... USB2.0 High Speed (Type A) 5 V, 1 A

iPod terminal ................................................................................................................................................... USB

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2. SPECIFICATIONS

2.1 SPECIFICATIONS

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Integrated Control Section

Control (IR) terminal ..........................................................................................................ø 3.5 Mini-jack (MONO)

IR signal .................................................................................................................. High Active (High Level: 2.0 V)

12 V Trigger terminal ......................................................................................................... ø 3.5 Mini-jack (MONO)

12 V Trigger output type .............................................................................................................12 V, Total 150 mA

RS-232C cable type .............................................................................................. 9-pin, cross type, female-female

Network Section (Wired)

LAN terminal ...................................................................................................................10 BASE-T/100 BASE-TX

Network Section (Wireless)

WLAN standards ........................................................ IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n

Frequency band

2.4 GHz band (2.412 GHz to 2.462 GHz) .................................................................... Channel 1 to Channel 11

5 GHz band (5.180 GHz to 5.240 GHz, 5.745 GHz to 5.825 GHz) .... Channel 36 to Channel 48, Channel 149 to

Channel 165

Security ............................................................................................................................. Disabled (no encryption)

WEP (Key length: 64 bit/128 bit, Key format: ASCII/Hex)

WPA2 Mixed (WPA/WPA2, Encryption method: TKIP/AES, Recognition method: PSK)

Miscellaneous

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

Power consumption ....................................................................................................................................... 290 W

In standby ................................................................................................................................................ 0.1 W

In standby (HDMI control on) ................................................................................................................... 0.3 W

In standby (Network standby on) ............................................................................................................ 2.7 W

In standby (Network standby on, wireless LAN connected) ..................................................................... 3.0 W

In standby (HDMI control on, Network standby on) ................................................................................. 2.7 W

In standby (HDMI control on, Network standby on, wireless LAN connected) .......................................... 3.0 W

Auto power down ....................................................................................... 15 min, 30 min, 60 min, off (default)

Dimensions ............................................................................................. 435 mm (W) x 185 mm (H) x 441 mm (D)

(17.13 in. (W) x 7.28 in. (H) x 17.36 in. (D))

Weight (without package) ...............................................................................................................14.3 kg (31.5 lb)

Number of Furnished Parts

MCACC Setup microphone ................................................................................................................................. 1

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

AAA size IEC R03 dry cell batteries .................................................................................................................... 2

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

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

Power cord
CD-ROM
Quick start guide
Safety Brochure
Warranty sheet

Notes

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







Windows® and the Windows logo are trademarks of the Microsoft group of companies.

 Corporation and product names mentioned herein are trademarks or registered trademarks of the respective corporations.

 The Wi-Fi CERTIFIED Logo is a certification mark of Wi-Fi Alliance.
 The Wi-Fi Protected Setup Identifier Mark is a certification mark of Wi-Fi Alliance.
 SABRE DAC

TM

and the logo are trademarks of ESS Technology, Inc.

 HTC, HTC Connect and the HTC Connect logo are trademarks of HTC Corporation.
 MHL, the MHL Logo, and Mobile High-Definition Link are trademarks or registered trademarks of MHL, LLC in the

United States and other countries.

Apple, AirPlay, iPad, iPhone, iPod, iPod nano, iPod touch, iTunes, Safari, Bonjour, Mac, Mac OS and OS X are trademarks
of Apple Inc., registered in the U.S. and other countries.
The AirPlay logo is a trademark of Apple Inc.

For DTS patents, see http://patents.dts.com. Manufactured under license from DTS Licensing Limited. DTS, DTS-HD,
the Symbol, & DTS and the Symbol together are registered trademarks, and DTS-HD Master Audio is a trademark of
DTS, Inc. © DTS, Inc. All Rights Reserved.

Manufactured under license from Dolby Laboratories. Dolby, Dolby Atmos, Dolby Surround, and the double-D sym
bol are trademarks of Dolby Laboratories.

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10 Check the appearance of the product.

No scratches or dirt on its appearance after receiving it for service.

1 Check the firmware version. The firmware version must be the latest one.

If it is not the latest one, be sure to update it.

2 Confirm whether the customer complain has been solved.

If the customer complain occurs with the particular source, such
as Dolby Digital, DTS, AAC and HDMI, input it for the operation
check.

The customer complain must not be reappeared.
Video, Audio and operations must be normal.

5 Check a supported music file playback (e.g. wav. flac. mp3, etc).

(Make the connections with a USB memory or an iOS device)

Audio and operations including OSD output must be normal.

6 Check surround playback.

(Select Surround mode and check the multichannel operations
via the DSP circuit.)

Each channel audio and operations must be normal.

3 Check the analog audio playback.

(Make the analog connections with a CD/DVD/BD player.)

Each channel audio and operations must be normal.

7 Check the video outputs.

(Connect with a BD player.)

Video and operations must be normal.

8 Check the tuner (AM and FM) operations. Audio and operations must be normal.
9 Check the sound from headphone output. Sound must be normal, without noise.

4 Check the HDMI digital audio playback.

(Make the digital connections with a BD player.)

Each channel audio and operations must be normal.

No. Procedures Check points

Items to be checked after servicing

To keep the product quality after servicing, confirm recommended check points shown below.

oidua gnidrager dekcehc eb ot metIoediv gnidrager dekcehc eb ot metI

Block noise Distortion
Horizontal noise Noise
Flicker Volume too low
Disturbed image (video jumpiness) Volume too high
Too d ark Volume fluctuating

detpurretni dnuoSthgirb ooT

Mottled color

See the table below for the items to be checked regarding video and audio.

6 7 8

3. BASIC ITEMS FOR SERVICE

3.1 CHECK POINTS AFTER SERVICING

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9

1

COMPONENT ASSY

AB

PRE BRIDGE_S ASSY

AE

BIND DM CABLE_S ASSY

AC

FAN CONNECT ASSY

AF

P WIRE GUARD_S ASSY

AD

MIC HP GUARD ASSY

AJ

TRANS VREG STYL_S ASSY

PRIMARY ASSY

S

A-DAC BRIDGE ASSY

Y

D-FILTER BRIDGE_S
ASSY

COMPOSITE ASSY

I

INTERFACE_S ASSY

G

AUDIO ASSY

A

D-AUDIO BRIDGE

ASSY

Z

A-REG_S ASSY

T

I

VREG CHILD_S ASSY

W

H

IR INTERFACE_S ASSY

Q

CONNECT_S ASSY

IR REG_S ASSY

U

V-REG_S ASSY

V

H

USB RECT_S ASSY

D

DIGITAL MAIN_L ASSY

F

FILTER_S ASSY

B

D AMP_SS ASSY

R

IR BUFFER_S ASSY

O

BUFFER GND ASSY

P

BINDFAN CABLE_S

ASSY

AI

FFC GUARD_S ASSY

AG

VREG GUARD ASSY

AH

I

IR EDGE GUARD_S ASSY

AL

X

Network Module

AM/FM Tuner Unit

AA

OPT COAX_S ASSY

E

3.2 PCB LOCATIONS

A

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B

C

D

E

F

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2 3 4

5

VOL ASSY

ENCODER ASSY

N

DISPLAY ASSY

K

POWER SW ASSY

M

FRONT HDMI USB

ASSY

C

MIC HP ASSY

J

L

PANEL GUARD ASSY

AK

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.

Therefore, when replacing, be sure to use parts of identical designation.

6 7 8

A

B

Mark No. Description Part No.

LIST OF ASSEMBLIES

1..D AMP_SS ASSY AWH7116

NSP 1..AUDIO COMPOSITE ASSY AWR7287

2..AUDIO ASSY AWX2075

2..COMPOSITE ASSY AWX2084

2..D-AUDIO BRIDGE ASSY AWX1772

2..A-DAC BRIDGE ASSY AWX1774

2..FAN CONNECT ASSY AWX1775

2..PRE BRIDGE_S ASSY AWX1889

NSP 1..PRIM DISPLAY ASSY AWM8416

2..DISPLAY ASSY AWX2025

2..VOL ASSY AWX2029

2..POWER SW ASSY AWX2030

2..PRIMARY ASSY AWX2037

2..MIC HP ASSY AWX2047

2..ENCODER ASSY AWX2051

2..MIC HP GUARD ASSY AWX2052
NSP 2..VREG GUARD ASSY AWX2053
NSP 2..PANEL GUARD ASSY AWX2054

1..COMPONENT ASSY AWX2104

NSP 1..IR BUFFER_S ASSY AWM8430

2..IR_BUFFER_S ASSY AWX2100

2..BUFFER GND ASSY AWX1789

Mark No. Description Part No.

NSP 1..INTERFACE REG_S ASSY AWR7305

2..INTERFACE_S ASSY AWX2138

2..IR REG_S ASSY AWX2142

2..FILTER_S ASSY AWX2143

2..CONNECT_S ASSY AWX2147

2..OPT COAX_S ASSY AWX2148

NSP 2..TRANS VREG STYL_S ASSY AWX1890

NSP 1..PRE POWER_S ASSY AWR7315

2..A-REG_S ASSY AWX2171

2..V-REG_S ASSY AWX2175

2..D-FILTER BRIDGE_S ASSY AWX1859

2..VREG CHILD_S ASSY AWX2176

2..USB RECT_S ASSY AWX2177

2..BIND DM CABLE_S ASSY AWX1863

2..P WIRE GUARD_S ASSY AWX1864
NSP 2..FFC GUARD_S ASSY AWX1862
NSP 2..BINDFAN CABLE_S ASSY AWX1865

1..IR INTERFACE_S ASSY AWX1778

2..IR INTERFACE_S ASSY AWX1778
NSP 2..IR EDGE GUARD_S ASSY AWX1779

1..DIGITAL MAIN_L ASSY AWX2021

2..NETWORK MODULE AXX7293

1..FRONT HDMI USB ASSY AWX2114

C

D

AM/FM Tuner Unit AXX7282

SC-91

5

6 7 8

E

F

11

3.3 JIGS LIST

[1] Jigs List

Name

Jig No.

Remarks

Diagnosis for AUDIO ASSY, D AMP_SS ASSY

Diagnosis for AUDIO ASSY, D AMP_SS ASSY,
DIGITAL MAIN_L ASSY (side-B), OPT COAX_S ASSY

Diagnosis for AUDIO ASSY

Diagnosis for AUDIO ASSY, D AMP_SS ASSY

Diagnosis for AUDIO ASSY, D AMP_SS ASSY

Diagnosis for D AMP_SS ASSY

Diagnosis for DIGITAL MAIN_L ASSY (side-B),
OPT COAX_S ASSY

Diagnosis for DIGITAL MAIN_L ASSY (side-B),
OPT COAX_S ASSY

Diagnosis for DIGITAL MAIN_L ASSY (side-B),
OPT COAX_S ASSY, FILTER_S ASSY

Diagnosis for DIGITAL MAIN_L ASSY (side-B),
OPT COAX_S ASSY, FILTER_S ASSY

Diagnosis f

or FILTER_

S ASSY

Diagnosis for FILTER_S ASSY

15P FFC extension jig cable GGD1680

29P board to board extension jig cable GGD1856

20P board to board extension jig cable GGD1868

5P PH Housing ASSY extension jig cable GGD1594

4P PH Housing ASSY extension jig cable GGD1809

24P board to board extension jig cable x 2 GGD1871

23P board to board extension jig cable GGD1875

23P board to board extension jig cable GGD1805

27P board to board extension jig cable GGD1873

15P board to board extension jig cable GGD1876

28P board to board extension jig cable GGD1867

20P board to board extension jig cable

GGD18

68

[2] Lubricants and Glues List

Name

Lubricants and Glues No.

Remarks

Silicone Grease

GYA1001

Refer to “9.5 FRONT SECTION”.

[3] Cleaning

Before shipping out the product, be sure to clean the following positions by using the prescribed cleaning tools.

Name skrameR.oN traPdenaelc eb ot noitisoP

Refer to “9.4 CHASSIS SECTION”.Cleaning paper GED-008Fan

A

1

2 3 4

B

C

D

E

F

12

SC-91

1

2 3 4

5

6 7 8

A

B

C

D

E

F

SC-91

5

6 7 8

13

1

20

23

20

9/65

TUNER
MODULE

3/100

*2mm

1.VOLA

2.VOLB

3.GNDD

39/120

7

1.-B+15V

2.-B

1.V+12_DF

2.GND_DF

3.V-12_DF

4.GND_DF(S)

5.V+12_RY

6.V-12_RY

7.V-12_RY

2

15/305

19.EXSO

18.EXSCK

17.EXOE

16.EXST

15.XOLERR

14.XBERR

13.IRMUTEA

12.IRMUTESB

11.IRMUTEFH

10.RY_FW

9.RY_AF

8.RY_CR

7.RY_FH

6.RY_B

5.AMP_TEMP

4.XTEMPSD5

3.XDCERR

2.GNDD

1.GNDD

4

4

*1.00mm

1.V+8_MD

2.GND_MD

3.V-8_MD

4.GND_MD(S)

4

!

FU12!FU11

!

FU15

!

FU14!FU13

ADD7792-

ADD7794-

ADD7796-

D20PYY0310E

*1.00mm

CN8301

CN3472

CN6001

JH6004

JH6002

CN4000

CN4001

JP3001

CN2503

CN3601

CN8302

JP8402

CN6803 CN6

CNCN3802

24

24

*4

CN4002

CN4003

CN4004

2

4

7

JP6001

CN6003

ADD7783-

5/60

8

CN8002

JA8003CN8001

CN3371

JP6004

20

CN3001CN2861

23

CN3902

20

CN3792

20

CN3791

23

23

23

23

CN3653

*1.00mm

JA9620 CN601 CN1502

CN901

7

*1.00mm

*1.00mm

*1.00mm

ADX7776-

7/205

1.GNDD

2.Y_IN

3.GNDD

4.CB_IN

5.GNDD

6.CR_IN

7.GNDD

8.CVBS_IN

9.GNDD

10.V+5_V

11.V+5_V

12.COMP_DET

13.SDA

14.SCL

15.GNDD

1.XFANERR

2.FANCTLL

3.FANCTLH

*4 *4

JA8001

JA8002

iPod Direct USB HDMI IN5

JA3471

MIC IN HEADPHONE

JA3476

MCACC setup

IR

JA7005

OUT

JA7003

12V TRG1

12V TRG2

15.XHPDET

1.XMICDET

JA830*

JA8601

PR

PB

Y

232C

COMPONENT

IN

1.V-5_V(NC)

2.GNDV

3.V+5_V

4.GNDV

5.ZONE3_OUT

6.GNDV

7.ZONE2_OUT

8.GNDV

9.DVR_OUT

10.GNDV

11.MONITOR_OUT

12.GNDV

13.DVR_IN

14.GNDV

15.NC

16.GNDV

17.TV/SAT_IN

18.GNDV

19.NC

20.GNDV

OUT

IN

DVR SATDVR

JA3602

IN

JA3601

OUT

MONITOR

JJA9601

IN1

FRONT

CENTER

JA4101

RL

for IC6001 DBUG&D.L.

CN6002

J0001

J0008

2.GNDUSB

1.V+UN_USB

JP8001

CN3652

1.TURST

2.TUSDA

3.TUSCL

4.TUIREQ

5.NC

6.GNDT

7.TR

8.V+5T

9.TL

BD IN
JA9604

1.JOG_A

2.JOG_B

3.GNDD

JH6003

OUT

ZONE2

JA6701

IN5

4

1.V+5_V

2.GNDV

3.GNDV

4.V-5_V(NC)

27

27

4.-B(-65V)

3.GND

2.GND

1.+B(+65V)

*1.00mm

*4

!

FU31!FU32

*1.25mm

*1.25mm

20

CN2104

23.Z2HPF

1.FHMUTE

20.BT L

19.GNDBT

18.BT R

17.GNDBT

16.V+6_AD

15.V+6_AD

14.GNDAD

13.GNDAD

12.V+12_A

11.V+12_A

10.GNDA

9.GNDA

8.V-12_A

7.V-12_A

6.GNDADS

5.FR IN

4.GNDADS

3.FL IN

2.GNDDAS

1 SW2 OUT

R

L

1.S3-1

2.S3-C

3.S3-2

4.S2-1

5.S2-2

6.S9-1

7.S9-C

8.S9-2

5.S6-2

4.S6-1

3.S5-2

2.S5-C

1.S5-1

!

FU10

*4

ADD7786-

31/135

*1.00mm

ADD7790-

15/135

7/(505/590)

ADX7821-

2/120

ADX7760-

4/285

4/180

ADX7780-

2/190

7/180

ADX7781-

ADX7782-

ADX7779-

7/65

ADX7783-

7

PF04PG-S10

4/100

AXX7282-

19/90

ADD7795-

*1.25mm

*1.25mm

1.XHPDET

2.AMUTE

3.GNDHP

4.HPR

5.GNDHP

6.GNDHP

7.HPL

8.GNDA

9.MICOUT

10.GNDA

11.V+7_A

12.GNDA

13.GNDA

14.V-7_A

15.XMICDET

1.ACWP

2.GNDV

3.GNDV

4.V+5_V

5.-VF

6.FL AC2

7.FL AC1

ADX7777-

19/360

ADD7793-

*1.25mm

3/65

15.HP L

1.NC

3.XFANERR

2.FANCTLL

1.FANCTLH

1.V+12

2.V+5_V

3.V+5_V

4.GNDV

5.GNDV

6.V-5_V(NC)

7.V-12(NC)

1.V+12

2.V+5_V

3.V+5_V

4.GNDV

5.GNDV

6.V-5_V(NC)

7.V-12(NC)

1.Z2HPF

2.NC

3.TUIREQ

4.TURST

5.TUSDA

6.TUSCL

7.GNDD

8.DAC0DET(GNDD)

9.GNDD

10.GNDD

11.VLSCK

12.VLSO

13.Z2VLSO

14.Z3MUTE

15.Z2MUTE

16.SBMUTE

17.AMUTE

18.PRESEL

19.LSSN

20.XMICDET

21.NC

22.XHPDET

23.NC

8.GNDD

7.V+6R3_ROKU

6.GNDD

5.USBPOW

4.XUSBERR

3.D+

2.D-

1.GNDD

CN3771

CN3772

CN7663

CN7552

CN7554

CN7553

CN7901

CN7551

CN7661

JA5101

FH/FW/B

LR

CN7

CN7281

CN7401

CN7271

CN7241

CN7251

CN74

IR IN1
JA7001

CN7012

CN7006

CN7009

CN7010

24.GGND

23.GGND

22.V-12SBL

21 V+12SBL

24.FHL-

23.NC

22.FHL-

21.FHL+

20.V-12FHR

19.V+12FHR

18.IRMUTEFH

17.FHR-

16.FHR+

15.V-12C

14.V+12C

13.NC

12.C-

11.C+

10.V-12FL

9.V+12FL

8.IRMUTEA

7.FL-

6.FL+

5.V-12FR

4.V+12FR

3.NC

2.FR-

1.FR+

CN4700CN4100

5

CNCN3860

5

CN4200

5

CN3890

CN

5

CN3870

CN4600

5

CN3880

5

55

27.GNDD

26.XOLERR

25.XDCERR

24.XBERR

23.TEMPERR

22.IRIN

21.XFANERR

20.AMPTEMP

19.V+12TRG

18.V+12TRG

17.GNDV

16.GNDV

15.XHPDET

14.AMUTE

13.GNDHP

12.HP_R

11.GNDHP

10.HP_L

9.GNDA

8.MICOUT

7.GNDA

6.V+7_A

5.GNDA

4.V-7_A

3.XMICDET

2.NC

1.NC

JP8701

*1.00mm

CN7903

2.S7-2

1.S7-1

1.S1-2

2.S1-C

3.S1-1

JP

1.V+FAN

2.V-FAN

3.LOCK DET

1.HP L

2.GNDHP

3.HP R

4.GNDHP

5.AMUTE

6.XHPDET

7.XMICDET

8.V-7_A

9.GNDA

10.GNDA

11.V+7_A

12.GNDA

13.MICOUT

14.NC

15.NC

1.V+5_EV_1

2.POWLED

3.POWER KEY

4.GNDD

J0002

Y0022

Y0021

J0003

J0010

J0009

J0007

Y0024

Y0023

J0004

Y0020

Y0025

16.EV232TX

17.EV232RX

18.232POW

19.232CDET

20.GNDD

21.GNDD

22.V+5R6_EV

23.V+5R6_EV

*1.25mm

*1.25mm

*1.25mm

*1.25mm

*1.25mm

*1.25mm

*1.25mm

*1.25mm

*1.25mm

1.GNDD

31.V+5R6_EV

31.GNDD

30.GNDD

29.GNDD

28.GNDD

27.GNDD

26.232CDET

25.EV232TX5

24.EV232RX5

23.232EV

22.XSMUTE

21.LOWPOW

20.ACRY

19.WUSBPOW

18.XNETRST

17.NETPOW

16.DVCPOW

15.XEMRST5

14.232POW

13.EVSI5

12.EVSO

11.EVSCK

10.GNDD

9.CECIO

8.EVREQI5

7.EVREQO5

6.NETWOL

5.XWUSBERR

4.GNDD

3.GNDD

2.V+5R6_EV

1.V+5R6_EV

29

29.V+5R6_EV

28.V+5R6_EV

27.GNDD

26.GNDD

25.NC

24.FANCTLL

23.FANCTLH

22.EXSO

21.EXSCK

20.EXOE

19.EXST

18.GNDD

17.NC

16.NC

15.IRMUTEA

14.IRMUTESB

13.NC

12.NC

11.NC

10.GNDD

9.GNDD

8.RYFR

7.RYCSR

6.RYFWFH

5.RYSB

4.GNDD

3.12VTRG1

2.12VTRG2

1.12VERR

CN603

29

CN7952

29

CN7954

1.V+5R6_EV

2.V+5R6_EV

3.GNDD

4.GNDD

5.NC

6.FANCTLL

7.FANCTLH

8.EXSO

9.EXSCK

10.EXOE

11.EXST

12.GNDD

13.NC

14.NC

15.IRMUTEA

16.IRMUTESB

17.NC

18.GNDD

19.NC

20.GNDD

21.GNDD

22.RYFR

23.RYCSR

24.RYFWFH

25.RYSB

26.GNDD

27.12VTRG1

28.NC

29.12VERR

29

CN7004

JA9202

OUT2

JA1603

LAN

JA1601

OUT1

5.USBPOW

4.XUSBERR

3.D+

2.D-

1.GNDD

3,SHIELD

2.GNDD

1.V+6R3_ROKU

CN9202

3

5

19.V+5_HD

18.V+5_F

17.GNDD

16.GNDD

15.

HOT_PLUG_DETECT

14.SDA_SINK

13.SCL_SINK

12.RFXC-

11.GNDD

10.RFXC+

9.RFX0-

8.GNDD

7.RFX0+

6.RFX1-

5.GNDD

4.RFX1+

3.RFX2-

2.GNDD

1.RFX2+

39.GNDD

1.V+5_EV

19.EVSI5

20.SVSO5

21.EVSCK

22.HOTPLUG

23.CECIO

24.EVREQI5

25.EVREQO5

26.NETWOL

27.XFANERR

28.XWUSBERR

29.IRIN

30.TEMPERR5

31.XBERR

32.XDCERR

33.XOLERR

34.GNDD

35.GNDD

36.GNDD

37.GNDD
38V+5_EV

39.V+5_EV

9.AMPTEMP

10.XSMUTE

11.LOW_P

12.ACRY

13.WUSBPOW

14.XNETRST

15.NETPOW

16.DVCPOW

17.XEMRST5

18.232POW

5.CEC_IO

4.XVDDERR

3.GNDD

2.GNDD

1.GNDD

5.CEC_IO

4.XVDDERR

3.GNDD

2.GNDD

1.GNDD

1.GNDD

2.XVDDERR

3.NC

4.XRESET

5.232CDET

6.EV232TX5

7.EV232RX5

8.232EV

JA2

SAT

IN

IN OUT

JA2501

DVR/BDR

28.GNDDAS

27.SBR OUT

26.GNDDAS

25.SBL OUT

24.GNDDAS

23.ZR OUT

22.GNDDAS

21.ZL OUT

20.GNDDAS

19.FR OUT

18.GNDDAS

17.FL OUT

16.GNDDAS

15.SW1 OUT

14 GNDDAS

28.GNDDAS

27.NC

26.GNDDAS

25.NC

24.GNDDAS

23.FHR/FWR OUT

22.GNDDAS

21.SR OUT

20.GNDDAS

19.SW1 OUT

18.GNDDAS

20.BT L

1.SW2 OUT

CN9502

DVR/BDR

AXX72

64

64

NETW

CN9203

EXT. ANT.

20

ADH7048-

INTERFACE_S ASSY
(AWX2138)

VOL ASSY
(AWX2029)

L

IR REG_S ASSY
(AWX2142)

U

U

1/2 -

( )

U

2/2

COMPOSITE ASSY
(AWX2084)

IR INTERF
(AWX1778

V-REG_S ASSY
(AWX2175)

CONNECT_S ASSY
(AWX2147)

A-DAC
BRIDGE ASSY
(AWX1774)

D-AUDIO
BRIDGE ASSY
(AWX1772)

G

I

Q

X

Y

Z

V

V

1/3 -

( )

V

3/3

FRONT HDMI USB ASSY
(AWX2114)

USB RECT_S ASSY
(AWX2177)

COMPONENT ASSY
(AWX2104)

MIC HP ASSY
(AWX2047)

DISPLAY ASSY
(AWX2025)

VREG CHILD_S ASSY

(AWX2176)

MIC HP GUARD ASSY
(AWX2052)

BIND DM CABLE_S ASSY
(AWX1863)

P WIRE GUARD_S ASSY
(AWX1864)

BINDFAN CABLE_S ASSY
(AWX1865)

TRANS VREG STYL_S ASSY
(AWX1890)

FFC GUARD_S ASSY
(AWX1862)

VREG GUARD ASSY
(AWX2053)

PANEL GUARD ASSY
(AWX2054)

IR EDGE GUARD_S ASSY
(AWX1779)

C

D

H

J

K

W

AD

AE

AF

AG

AH

AI

AJ

AK

AL

2 3 4

4. BLOCK DIAGRAM

4.1 OVERALL WIRING DIAGRAM

A

B

C

D

E

F

14

1

2 3 4

SC-91

5

20

20

20

!

AC CORD

SECONDARY

PRIMARY

4/100

FAN

IR_REG_SIR_REG_S

A-REG_S

USB RECT_S

!

FU12!FU11

D20PYY0410E

!

JH6002

CN3052

CN6954

CN6804

CN6953

CN6803 CN6802

CN3801CN3802

24 24

2424

AXM7040-

BOARD IN

FFC

2.0mm FLAT CABLE

FFC CONNECTOR

2.0mm CABLE HOLDER

*2mm

BOARD TO BOARD

T1501

CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE WITH SAME TYPE AND RATINGS OF FUSE.

S2,S3,S9

S5,S6

S4

S1

S7

20

ANOTHER CONNECTOR

CN3401

JP6002

JUMPER CONNECTOR

28

CN2502

20

CN3001

2820

CN3794CN3792

2820

CN3793CN3791

2715

CN7184 CN7183

CN7182

15 27

CN7181

2715

20.PRESEL(W/XF)

19.V+7_A

18.V-7_A

17.GNDA

16.GNDA

15.GNDA

14.SR OUT

13.GNDA

12.SL OUT

11.GNDA

10.FR OUT

9.GNDA

8.C OUT

7.GNDA

6.FL OUT

5.GNDA

4.SB/FHR OUT

3.GNDA

2.SB/FHL OUT

1.GNDA

HDMI CONNECTOR

CN1503 CN1801

CN9501

ADX7792-

7/270

JP51

*4

JA71_1 WHT

JA71 YEL

PIN JACK

1.V+12_A

2.GNDDAS

3.V-12_A

4.GNDDAS

5.FRO

6.GNDDAS

7.FLO

8.GNDDAS

9.SRO

10.GNDDAS

11.SLO

12.GNDDAS

13.SWO

14.GNDDAS

15.CO

16.GNDDAS

17.SBRO

18.GNDDAS

19.SBLO

20.GNDDAS

21.ZONE2RO

22.GNDVCOMDAC2

23.ZONE2LO

24.GNDDAS

25.HDZONE2RO

26.GNDVCOMHDZDAC

27.HDZONE2LO

IN4 IN6

JA9605JA9602 JA9606JA9601 JA9603

IN2IN1 IN3

RL

SURROUND

JA4301

CN81(CUXJ)

MAIN TRANS

SHIELD CABLE

BD IN
JA9604

D20PYY0310E

3/100

1.JOG_A

2.JOG_B

3.GNDD

JH6003

JP6003

CN3501

*2mm

JA4501

LR

KN6962

20

CN2104

CN2101 CN2102

28

27

27.V+12_A

1.HDZONE2LO

CN2103

15

15.GNDD

1.LIN

19.GNDBT

18.BT R

17.GNDBT

16.V+6_AD

15.V+6_AD

14.GNDAD

13.GNDAD

12.V+12_A

11.V+12_A

10.GNDA

9.GNDA

8.V-12_A

7.V-12_A

6.GNDADS

5.FR IN

4.GNDADS

3.FL IN

2.GNDDAS

1.SW2 OUT

!

FU22!FU21

*4

1.V+FAN

2.V-FAN

3.LOCK DET

3

CN5931

CN5932

3

1.V+FAN

2.V-FAN

3.LOCK DET

1.S4-1

2.NC

3.S4-C

4.NC

5.S4-2

1.S3-1

2.S3-C

3.S3-2

4.S2-1

5.S2-2

6.S9-1

7.S9-C

8.S9-2

3/215

ADX7778-

PF05PG-S20

5/200

10.GNDD

11.VLSCK

12.VLSO

13.Z2VLSO

14.Z3MUTE

15.Z2MUTE

16.SBMUTE

17.AMUTE

18.PRESEL

19.LSSN

20.XMICDET

21.NC

22.XHPDET

23.NC

CN7501

CN7502

CN7201

CN7400

1.V+5R6_EV

2.V+5R6_EV

3.V+5R6_EV

4.GNDD

5.GNDD

6.GNDD

7.RYAC

24.GGND

23.GGND

22.V-12SBL

21.V+12SBL

20.NC

19.SBL-

18.SBL+

17.V-12SBR

16.V+12SBR

15.IRMUTEB

14.SBR-

13.SBR+

12.V-12SL

11.V+12SL

10.NC

9.SL-

8.SL+

7.V-12SR

6.V+12SR

5.NC

4.SR-

3.SR+

2.V-12FHL

1.V+12FHL

15.V-12C

14.V+12C

13.NC

12.C-

11.C+

10.V-12FL

9.V+12FL

8.IRMUTEA

7.FL-

6.FL+

5.V-12FR

4.V+12FR

3.NC

2.FR-

1.FR+

CN4700 CN43000

CN3840CN3850CN3860

55555

CN4500 CN4900

555

CN3870

5

CN4600

5

5

5

CN3810

CN4400

CN3830

S-BACK

1.S1-2

2.S1-C

3.S1-1

JP7291

1.V+FAN

2.V-FAN

3.LOCK DET

5

5.V-12_A

4.GNDA

3.GNDA

2.V+12_A

1.V+6_AD

1.V+5_EV_1

2.POWLED

3.POWER KEY

4.GNDD

*4

FU1

!!

*4

FU4

V-REG_S

11.EVSCK

10.GNDD

9.CECIO

8.EVREQI5

7.EVREQO5

6.NETWOL

5.XWUSBERR

4.GNDD

3.GNDD

2.V+5R6_EV

1.V+5R6_EV

JA5401JA5406

COAX

9IN9

CN1803

CN5401

OPT IN

3,SHIELD

2.GNDD

1.V+6R3_ROKU

3

SW1&SW2

JA3101

IN

CD

JA2505

IN

1.GNDD

2.BTPOW

3.EXSOB(BTDET)

4.EXSCK(BTRX)

5.EX2OE(BTTX)

6.EX2ST(BTOC)

7.BT5V

8.BT5V

9.BT_STATE1

10.BT_STATE2

11.BT_STATE3

12.GNDD

13.RIN

14.GNDDAS

15.LIN

ADG7118-A

*Furnished parts

MODEL

iPod CABLEMICROPHONE REMO-COM

CUXJ

SC-91

ATS7486-A

REK1143­(1.25A/125V)

FU13,FU14 FU15

MODEL

FU1 FU4 FU31,FU32

CUXJ

FU21,FU22

REK1154­(10A/125V)

FU10

REK1139­(T2A H/250V)

REK1151­(6A/125V)

REK1142­(1A/125V)

REK1143­(1.25A/125V)

REK1143­(1.25A/125V)

SC-91

!

*4

REK1144­(1.6A/125V)

FU11,FU12

28.GNDDAS

27.SBR OUT

26.GNDDAS

25.SBL OUT

24.GNDDAS

23.ZR OUT

22.GNDDAS

21.ZL OUT

20.GNDDAS

19.FR OUT

18.GNDDAS

17.FL OUT

16.GNDDAS

15.SW1 OUT

14.GNDDAS

13.C OUT

12.GNDDAS

11.SR OUT

10.GNDDAS

9.SL OUT

8.GNDDAS

7.FHR/FWR OUT

6.GNDDAS

5.FHL/FWL OUT

4.GNDDAS

3.HDZR OUT

2.GNDDAS

1.HDZL OUT

28.GNDDAS

27.NC

26.GNDDAS

25.NC

24.GNDDAS

23.FHR/FWR OUT

22.GNDDAS

21.SR OUT

20.GNDDAS

19.SW1 OUT

18.GNDDAS

17.FR OUT

16.GNDDAS

15.FL OUT

14.GNDDAS

13.C OUT

12.GNDDAS

11.SL OUT

10.GNDDAS

9.FHL/FWL OUT

8.GNDDAS

7.ZR OUT

6.GNDDAS

5.ZL OUT

4.GNDDAS

3.HDZR OUT

2.GNDDAS

1.HDZL OUT

20.BT L

1.SW2 OUT

9.GNDD

8.OPT2_IN

7.GNDD

6.COAX2_IN

5.GNDD

4.COAX_IN

3.GNDD

2.V+3_3V

1.OPT_IN

CN9502

7

1.PRESEL(W/XF)

20.GNDA

DVR/BDR

AXX7293

64

64

64

64

NETWORK MEDIA MOD.

CN9203

CN9204

EXT. ANT.

ADX7513-

ADH7049-

33

AXD7723- -APM7011-

AUDIO ASSY
(AWX2075)

OPT COAX_S
ASSY
(AWX2148)

DIGITAL MAIN_L ASSY
(AWX2021)

E

F

F

1/11 -F11/11

( )

A

A

1/2 -A2/2

( )

)

FILTER_S ASSY
(AWX2143)

BUFFER GND ASSY
(AWX1789)

IR INTERFACE_S ASSY
(AWX1778)

D-FILTER
BRIDGE_S ASSY
(AWX1859)

PRE BRIDGE_S
ASSY
(AWX1889)

FAN CONNECT
ASSY
(AWX1775)

B

P

Q

AA

AB

AC

D AMP_SS ASSY
(AWH7116)

R

R

1/6 -R6/6

( )

IR BUFFER_S ASSY
(AWX2100)

O

O

1/2 -O2/2

( )

B

1/2 -B2/2

( )

POWER SW ASSY
(AWX2030)

ENCODER ASSY
(AWX2051)

PRIMARY ASSY
(AWX2037)

A-REG_S ASSY
(AWX2171)

M

N

S

T

Therefore, when replacing, be sure to use parts of identical designation.

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.

!

designation.

with same parts (safety regulation authorized) of identical

mark found on some component parts should be replacedThe

6 7 8

A

5

6 7 8

SC-91

B

C

D

E

F

15

1

LPF

MIC

SAT/CBL

CD

SW DownMix

JA3471

IC2701, IC2702

JA2505

DVR/BDR

JA2501

MIC Amp

IC3471

IC9705(FL,C)
IC9704(FR,SW)
IC9703(SR,SBR)
IC9706(SL,SBL)

JA2505

TUNER Module

ZONE2

ZONE3

ZONE2

IC9701
ADC

AK5358AET

SW1

IC9602
DAC
ES9006S

IC2501
Selector / Volume / PRE Amp
BD3473KS2

IC3273
Selector / Volume / PRE Amp
BD3473KS2

Refer to the “4.4 BLOCK

DIGITAL MAIN_L ASSY

F

MIC HP ASSY

J

AUDIO ASSY

A

2 3 4

4.2 BLOCK DIAGRAM FOR AUDIO BLOCK

A

B

C

D

E

F

16

SC-91

1

2 3 4

5

DVR OUT

SP L/R

SP C

SP SL/SR

HP

SW PRE Amp
IC2751

<<POWER AMP>>

JA2501

JA3476

JA4101

JA4101

JA4301

JA4501

HEADPHONE Amp

IC6821,
IC6841

IC6801

IC6861,
IC6881

<<PREOUT>>

<<AUDIO ZONE OUT>>

IC2121
(ZONE2)

LPF

IC2801

IC7491
TMSB

SELECTOR

SW PRE Amp

IC2751

IC7451,
IC7471

JA5101

ZONE2

ZONE3

ZONE2

SP SBL/SBR

<<POWER AMP
INPUT BUFFER>>

PREOUT SW1

JA3101

JA3101

PREOUT SW2

SW1

ZONE2 OUT

JA6702

IC1802
ZONE2 DAC
AK4388ET

IC1818
HD ZONE DAC
AK4388ET

IC2202
(HD ZONE)

SP TML/TMR

o the “4.4 BLOCK DIAGRAM FOR DIGITAL MAIN AUDIO BLOCK”

FILTER_S ASSY

B

MIC HP ASSY

J

D AMP_SS ASSY

R

IR BUFFER_S ASSY

O

6 7 8

A

B

C

D

E

F

SC-91

5

6 7 8

17

1

ETHERNET

IC9602

HDMI SW

Silicon Image

"SiI9587CNUC-3"

IC909

Video Decoder

Analog

Devices

"ADV7181C"

IC603

Gate Array

SEIKO EPSON

"PE7008A"

Media Processor

"AXX7293"

IC9202

Serial Flash

128Mb

IC9206

iPod Authentication APP

(RENESAS)

"H337S3959"

36.864MHz

28.63636MHz

HDMI IN4

HDMI IN3

HDMI BDIN

HDMI IN1

HDMI IN2

HDMI IN5

COMPOSITE

COMPONENT

Pb

Pr

CEC

Y

HDMI IN6

BT

4

"

LAN PHY

YCbCr422
16bit

Wi-Fi

YCbCr422
16bit

COMPOSITE ASSY

I

COMPONENT ASSY

H

2 3 4

4.3 BLOCK DIAGRAM FOR DIGITAL MAIN VIDEO BLOCK

A

B

C

D

E

F

18

SC-91

1

2 3 4

EVENT ucom

RENESAS

"RL78***"

IC102

SDRAM

64Mb

IC603

Gate Array

"PE7008A"

IC9202

128Mb

IC9206

2

COMPOSITE

USB(FRONT)

CEC

HDMI OUT1

POWER SUPPLY BLOCK DIAGRAM

(DCDC,LDO)

HDMI ZONE
/HDMI OUT2

24 MHz

IC1602

4k2k Upscaler

"MN864787"

IC101

uCOM

"R5S726B0D216FP"

IC9002

DSP

D808K013DPTP456

IC9001

SDRAM-166

64Mb(8Mx16)

IC9004

SerialFlash

32Mb

IC103

SerialFlash

64Mb

12 MHz

IC9703

DSP

D808K013DPTP456

IC9702

SDRAM-166

64Mb(8Mx16)

IC9704

SerialFlash

16Mb

27 MHz

TMDS
DIGITAL VIDEO

CEC

ANALOG VIDEO
CLOCK
DIGITAL AUDIO

FRONT HDMI USB ASSY

C

DISPLAY ASSY

K

COMPOSITE ASSY

I

5

6 7 8

A

B

C

D

5

SC-91

6 7 8

E

F

19

1

SPDIF AMCLK I2S

IIC1201

ADC

AK5358AETET

SYSCLK

IC1506

DIR

AK4118AEQ8

XTI

MCKO1

BICK

LRCK

SDTO

DAUX

ARCSPDIF

COAX

OPT

27.0MHz

HZDBCK
HDZLRCK
HDZFDT

P1MCLK

IC9002

1st DSP

D808K013

DPTP456

DIRBCK
DIRLRCK
DIRDATO

AHCLKX0

ACLKX0

AFSX0
AXR0[7]D1FDT
AXR0[8]D1CDT
AXR0[9]D1SDT

AXR0[10]D1BWDT
AXR0[12]D1HWDT
AXR0[13]D1DMDT

ACLKR2
AFSR2
AXR2[0]

ACLKR1
AFSR1
AXR1[0]
AXR1[1]
AXR1[2]
AXR1[3]
AXR1[4]
AXR1[5]

ACLKR0
AFSR0
AXR0[1]
AXR0[2]
AXR0[3]

NBCK2
NLRCK2
NFDAT/DSDFL2
NSLR/NDSDFR2

XXTL0

AND(VHC08)

IC1804

SEL(VHC126)

IC1509

HDMCK

DIRMCK

NETDSDMCK

24.576MHz

AND(VHC08)

IC1601

NMP

AXX7293

P1_BCK
P1_LRCK/DSDSL
P1_HFDT/DSDFL

P1_SDTI/DSDC

P1_CDTI/DSDLFE

P1_BDTI/DSDSR
P1_SPDIF/DSDFR

_

_

_

MASTER CLOCK G

NETMCK

NBCK
NLRCK

NMCK

DSPB_BCK
DSPB_LRCK
DSPB_BWD

VHC541
IC9101

P1B_HFDT/DSDFL

P1B_CDTI/DSDLFE

P1B_SDTI/DSDC

P1B_BDTI/DSDSR

P1B_SPDIF/DSDFR

P1B_BCK
P1B_LRCK/DSDSL

DIRMCKI

IC1602

MN864787

CH0AMCLK

CH0ABCLK

CH0ALRCLK

CH0ASD0

CH0ASD1
CH0ASD2
CH0ASD3

CH0ASPDIF

CH1ABCLK

CH1ALRCLK

CH1ASD0

Q6
Q5
Q4
Q0

D4
D1
D0

PHDZBCK
PHDZLRCK
PHDZFDT

PHDZMCLK

P1B_LRCK/DSDSL

NSLR/NDSDFR

NFDAT/NDSDFL

NC_LFE

NC_LFE

NLRCK

NSLR/NDSDFR

NFDAT/NDSDFL

NC_LFE

NBCK

DIRBCK
DIRLRCK
DIRDATO

D2
D1

D808K013DPTP456

NSLR/NDSDFR2

NBCK2
NLRCK2
NFDAT/NDSDFL2

H : H

IC1817

SEL(VHC1

HDMC

L : NE

NSLR/NDSDFR2

NBCK2

NLRCK2

NFDAT/NDSDFL2

DSDH_BCK

DSDH_LRCK/HDSDSL

DSDH_HFDT/HDSDFL

DSDH_SPDIF/HDSDFR

PC FILE LINE/HDMI LINE
SWITCHING BLOCK

DIRBCK
DIRLRCK

DSDH_BCK
DSDH_LRCK/HDSDSL
DSDH_HFDT/HDSDFL
DSDH_SPDIF/DSDFR

NBCK2

DSD MASTER CLOCK GENERATOR BLOCKD MASTER CLOCK GENERATOR BLOCK

IC1511

×8 or 4

PLL

NETDSDMCK

AND (SH08)
IC1521

DSD28X56

DSPBCK
DSPLRCK
DSPBWDT

HDMI OUT1

AND(VHC08)

IC1603

AND(VHC08)

IC1505

AND(VHC08)

IC9207

AND(VHC08)

IC9003

AND(7SH08)

IC9006

DIGITAL MAIN_L ASSY

F

2 3 4

4.4 BLOCK DIAGRAM FOR DIGITAL MAIN AUDIO BLOCK

A

B

C

D

E

F

20

1

_

SC-91

2 3 4

5

SYSCLK

FLG I2S BCK,LRCK

DSPSDT(SR)

DSPBWDT(SRB/HEIGHT)

IC9002

AHCLKX0

ACLKX0

AFSX0

AXR0[7]D1FDT

AXR0[8]D1CDT

AXR0[9]D1SDT
AXR0[10]D1BWDT
AXR0[12]D1HWDT
AXR0[13]D1DMDT

NET

POW

DIR

POW

DVC

POW

TL0

AND(VHC08)

IC1804

DAMCLK

D2MCLKI

ZONE-I2S (LR)

ZMCLK

DABCK

DALRCK

DADATF

MASTER CLOCK GENERATOR BLOCK

DAC

FL/FR

DAC

C/LFE

DAC

SL/SR

DAC

SBL/SBR

DADATC

IC1504 x 2

PLL

IC1202

ES9006S

IC9703

2nd DSP

D808K013DPTP456

ACLKR1
AFSR1
D1FDT AXR1[0]
D1CDT AXR1[1]
D1SDT AXR1[2]
D1BWDT AXR1[3]
D1HWDT AXR1[4]
D1DMDT AXR1[5]

AHCLKX0

ACLKX0

AFSX0

AXR0[7]D2FDT

AXR0[8]D2CDT

AXR0[9]D2SDT
AXR0[10]D2BWDT
AXR0[12]D2HWDT

HNDSDFR

H : HDMI

IC1817

SEL(VHC157)

HDMCK

L : NET

R/NDSDFR2

NBCK2

NLRCK2

DSDH_BCK

CK/HDSDSL

HNLRCK

DIRMCK

H: DIR
L: NET/HDMI

IC1516

SEL(VHC157)

HNBCK

IC1501

SEL(VHC157)

DSPPASS

DSDXPCM

IC1515

SEL(VHC157)

H

DALRCK/DSDFL

DAFDT/DSDFR

DABCK

DSPBCK

DSPLRCK

DSPFDT/DSDFL

L

H

H : DSP THROUGH ROUTE
L : DSP ROUTE

H : DSD
L : PCM

DSP THROUGH
PCM/DSD SWITCHING BLOCK

DSPCDT/DSDFR

DACDT

HDZDACSEL

SEL (LCX157)

IC1818

HD_ZONE_DAC
SELECTOR

H:BCO
L: HDMI

L

HNFD/DSDFL

SEL(VHC157)

IC1503

DSPDT/DSDFL
DSPCDT/DSDFR
DSPSDT
DSPBWDT

DSPLRCK

DSPBCK

D1FDT
D1CDT
D1SDT
D1BWDT

D1BCK
D1LRCK

D1DMDT

D1HWDT

24.0MHz

6 7 8

A

B

C

D

E

F

SC-91

5

6 7 8

21

1

DIGITAL MAIN_L ASSY

COMPONENT ASSY

F

H

COMPOSITE ASSY

I

COMPOSITE ASSY

I

DVR

TV SAT

SH

VDEC

LPF

LPF

LPF

50

47

14

16

17

19

20

22

31

38

33

32
30

29

28

37

39

26

IC1801

NJW1328FH2

CDET

I2C

MONITOR OUT

DVR OUT

IN1

2 3 4

4.5 BLOCK DIAGRAM FOR VIDEO BLOCK

A

B

C

D

E

F

22

1

2 3 4

SC-91

5

6 7 8

A

B

C

D

E

F

SC-91

5

6 7 8

23

1

V+3R3_MA

V+1R25_MA

V+2R5_MA

DVCPOW

NETPOW V+1R2_HD

V+1R1_PA

DVCPOW

JA1601

DVCPOW

JA1603

V+5_MHL JA9606

JA9620

V+1R8_VD

V+3R3_DSP

DIRPOW

DIRPOW V+1R3_D1

DIRPOW

V+1R3_D2

V+3R3_HHH(MA)

V+5R6_EV(DDD)

V+1R8_HHH

V+1R8_NW

IC101

SH2

R5S726B0D216FP

IC103

Serial Flash

IC102

SDRAM

IC603

Gate Array

PE7008A

IC9002

DSPD808K013DPTP456

IC9001

SDRAM

IC9004

Serial Flash

IC909

VIDEO Decorder

ADV7181CBSTZ

IC9515

1.25V LDO

S-1172B1C-U5

IC9602

HDMI SW

SiI9587CNUC-3

IC1602

HDMI Tx

MN864787

IC9511

5V LDO

MM3529A50

IC9518

1.3V LDO

S-1172B13

IC9508

2.5V LDO

MM3529A25

V+5_HD

IC9505

1.8V LDO

MM3529A18

IC9510

3.3V LDO

MM3529A33

IC9523

1.2V LDO

S-1172B12

X1501, X9001

XTAL

IC9403

1.1V DCDC

Converter

MM3542BF

V+3R3_DSP

IC9603

Current SW

BD82065FVJ

IC451

3chDCDC

Converter

TPS65251RHA

IC1506

DIR

IC9703

DSPD808K013DPTP456

IC9702

SDRAM

IC9704

Serial Flash

IC9520

1.3V LDO

S-1172B13

IC1615

5V LOAD SW

AAT4610BIGV

HDMI OUT1

HDMI OUT2/ZONE OUT

IC1605

5V LOAD SW

AAT4610BIGV

SMPS

Other Circuits

V+5R6_EV

Refer to

MAIN Transformer part

A

CN9501

CN9502

CN1803

CN5401

HDMI IN6/MHL

FRONT HDMI

USB ASSY

DIGITAL MAIN_L ASSY

PRIMARY ASSY

C

OPT COAX_S

ASSY

E

F

S

2 3 4

4.6 BLOCK DIAGRAM FOR POWER BLOCK (1)

A

B

C

D

E

F

24

1

SC-91

2 3 4

V+1R2_DAC

V+3R3_DAC

DIRPOW

V+5_DAC

DIRPOW

V+1R2_NW

V+3R3_NW

NETPOW

V+2R5_NW

V+5_EV

NW Module

AXX7293

IC9502

Variable LDO

S-13A1A00-E6

X1501, X9001

XTAL

IC9408

3.3V DCDC

MM3542BF

IC9406

5V LDO

MM3411A50

232C

Mute Buffer

IC9410

1.2V LDO

S-1172B12

IC1202

ESS DAC

ES9006S

IC9411

3.3V LDO

MM3411A33

IC1506

DIR

AK4118AEQ8

IC1201ADAK5358AET

IC9519

5V LDO

MM3529A50

IC1802

Zone2 DAC

AK4388ET

IC1801

HD Zone DAC

AK4388ET

IC9704

Serial Flash

IC9407

2.5V LDO

MM3529A25

CN1803

CN5401

CN601

FFC

CN7901

V+5_EV

V+5R6_EV

CN7903

FFC

EVENT CPU

V+5_EV

IC6001

CN6001

IR

IC8601

RS232C

232POW

CN7952

CN603

CN8301

CN901

CN7954

CN7004

IC7902

5V LDO

MM3411A50

INTERFACE_S ASSY

COMPONENT

ASSY

DISPLAY ASSY

V-REG_S

ASSY

CONNECT_S

ASSY

OPT COAX_S

ASSY

E

G

H

K

V

X

5

6 7 8

A

B

C

D

E

F

SC-91

5

6 7 8

25

1

MAIN

Transformer

3

27

2

V-7_A

V+7_A

V+12TRG

V+5 V

RECTIFIER

D7241-7244

RECTIFIER

D7271-7274

IC7271

NJM78M08FA

IC7272

NJM79M08FA

RECTIFIER

D7251-7254

IC7251

NJM78M12FA

IC7252

NJM79M12FA

CN7201

8

+

+

+

-

-

CN7241CN7271JP7291

FAN

-B+15V

V+8_MD

V-8_MD

V+FAN

V-FAN

V+12DF

V-12DF

RECTIFIER

D7400,7401

3

CN7400

+

-

+B

-B

CN4001CN4002CN4003

V+64V

V-64V

VSS+12V

V+5V

V-5V

V+12V

V-12RY

V+12RY

V-12V

V+12**

V-12**

CN3801,3802

CN6802,6803

CN3810-3890

CN4*00

V+7_A

V-7_A

CN7401

IC4*03

NJM2830U1-12

Driver IC VCC

CN5931

CN5932

IC7241

NJM78M15FA

FFC

CN3472

CN7663

CN7661

CN7012

5

RECTIFIER

D7560

V+12

IC8701

NJM78M05FA

V+5

CN7552

JP8701

IC7551

NJM78M12FA

RECTIFIER

C7557,

D7554,7551

V+12TR

V+7_A

V-7_A

RECTIFIER

D7557,7558,

7559

CN7010

FFC

CN4004

CN7251

V+12RY

V-12RY

CN6804

A

B

IC4008

NJM78M05DL1A

IC4009

NJM79M05DL1A

3

CN7551

IC4003

NJM78M05DL1A

V+5V_S

Q7211

Q7212

AC

INTERFACE_S ASSY

MIC HP ASSY

DISPLAY ASSY

IR BUFFER_S

ASSY

IR INTERFACE_S

ASSY

D AMP_SS ASSY

IR REG_S ASSY

VREG CHILD_S ASSY

FAN CONNECT ASSY

G

J

K

O

Q

RU

W

2 3 4

4.7 BLOCK DIAGRAM FOR POWER BLOCK (2)

A

B

C

D

E

F

26

1

SC-91

2 3 4

5

3

+

-

V+12A

V-12A

for FL

Q3001

Q3002

Q3901

V+12_A

V-12_A

TUNER MODULE

CN3902

FFC

V+5_T

V+7_A

V-7_A

V-12_A

V+12_A

V+5_V

CN3001

CN3792

CN3791

CN2104

CN8301

CN901

V+5_V

FL_AC2

-VF

V+5_V

V+5_USB

USB +5V

Supply

CN3653

V+UN_USB

CN3652

V+5

CN75

JP870

RECTIFIER

D7557,7558,

7559

CN7501

CN7502

JP3001

CN3052

CN2503

CN6954

CN6953

B

CN7554

JP8402

V+5

CN7553

JP6001

FL_AC1

HDMI V+5MHL

Supply

CN7551

JP8001

IC9603

BD82065FVJ

(Load SW)

JA9606

CN9502

CN8001

RECTIFIER

D3651

IC8004

BD9329EFJ

(DC-DC Conv.)

output : 5.1V

JA8001

IC8002

BD82065FVJ

(Load SW)

V+5_MHL

IC7501

NJM78M12FA

IC7502

NJM79M12FA

RECTIFIER

D7501-7504

AB

AUDIO ASSY

FILTER_S ASSY

FRONT HDMI USB ASSY

USB RECT_S ASSY

DIGITAL

MAIN_L ASSY

COMPONENT ASSY

DISPLAY ASSY

A-REG_S ASSY

V-REG_S ASSY

A-DAC

BRIDGE

ASSY

PRE BRIDGE_S

ASSY

A

B

C

D

F

H

K

T

V

Y

DIGITAL MAIN_L ASSY

F

6 7 8

A

B

C

D

E

5

SC-91

6 7 8

F

27

1

This is just for general reference and does not including every single case.

No Power

Error Indications ?

Stand by

No

Yes

Yes

No

Refer to the

“5.2 [4] Error Indocations”

Jump to “No FL DISPLAY”

Fuse FU4 OPEN ?

No

Yes

Diagnose or replace
PRIMARY ASSY

Check PRIMARY ASSY
JP51-1,2,3pin or DIGITAL
MAIN_L ASSY
CN9501-1,2,3pin +5.6V

No

Check DIGITAL MAIN_L ASSY
CN601-1,2pin +5.6V

Check +5.6V line on DIGITAL MAIN_L ASSY
or replace DIGITAL MAIN_L ASSY

Check DISPLAY ASSY
C6017 +3.3V

Replace DISPLAY ASSY
or replace L6001

Yes

Yes

Yes

Yes

Yes

Check DISPLAY ASSY
L6001 +5.0V

Replace DISPLAY ASSY
or replace IC6002

Check DISPLAY ASSY
IC6001-10pin +4.9V (XRESET)

Check the signal path of XRESET
or replace DISPLAY ASSY

Check DISPLAY ASSY
IC6001-32pin (POWKEY)

HL when press power key

Check the signal path of POWKEY

Check DISPLAY ASSY
CN6001-56pin (DVCPOW)
LH when press power key

Check the signal path of DVCPOW

No

Check DISPLAY ASSY
CN6001-12pin (ACRY)
LH when press power key

No Problem

Replace DISPLAY ASSY

Check the signal path of ACRY

Check PRIMARY ASSY
JP51-7pin (ACRY)
LH when press power key

Does RY71 turn on
when press power key ?

Remove AC code and remove
CN9501. Insart AC code and
check JP51-1,2,3pin, +5.6V

Diagnose or replace
PRIMARY ASSY

No

Diagnose the power supply path of
V+5R6_EV after PRIMARY ASSY

Yes

Check V-REG_S ASSY
CN7901-30,31pin +5.6V

Replace FFC
(DIGITAL MAIN_L ASSY to V-REG_S ASSY)

Check V-REG_S ASSY
CN7903-1,2pin +5.0V
CN7903-36pin +4.9V(XRESET)

Check DISPLAY ASSY
CN6001-38,39pin +5.0V
CN6001-4pin +4.9V(XRESET)

Replace V-REG_S ASSY,
D7901, IC7901, IC7902 or IC7903

Replace FFC
(V-REG_S ASSY to DISPLAY ASSY)

No

No

No

No

No

Yes

No

Yes

No

No

Yes

No

Yes

No No Problem

Replace DISPLAY ASSY

Yes

Yes

No

Yes

Yes

No

Yes

Check the signal path of ACRY DISPLAY ASSY V-REG_S ASSY 
DIGITAL MAIN_L ASSY PRIMARY ASSY

Check the circuits around RY71 or replace PRIMARY ASSY

Check DIGITAL MAIN_L ASSY
CN601-16pin (DVCPOW)
LH when press power key

Check the signal path of DVCPOW DISPLAY ASSY V-REG_S ASSY 
DIGITAL MAIN_L ASSY

Diagnose or replace
DIGITAL MAIN_L ASSY

2 3 4

5. DIAGNOSIS

5.1 DIAGNOSIS FLOWCHART

NO POWER

A

28

1

B

C

D

E

F

SC-91

2 3 4

5

This is just for general reference and does not including every single case.

No FL DISPLAY

Dimmer ?

No

"FL OFF"LED light on ?

Yes No

JP6001 6,7pin 4.3Vac

Yes

No

V6001(FL Display)
damage

Yes

No

Yes

Replace V6001
(FL Display)

Check the power supply path of FL AC1
and AC2 or replace DISPLAY ASSY

Check DISPLAY ASSY

Check DISPLAY ASSY

JP6001 5pin -30V (VF)
4pin +5V

No

Yes

Check the path of V+5_V,-VF

(Signal path is same as FL AC1 and AC2)

All NG

All NG

Replace MAIN TRANS

Diagnose or replace
NG ASSY

Other results

Other results

Diagnose the circuits
(around D6010)
or replace DISPLAY ASSY

Diagnose around IC6003

NG

Replace IC6003
or DISPLAY ASSY

No Problem

Replace V6001(FL Display)
or DISPLAY ASSY

Check DISPLAY ASSY

Check DISPLAY ASSY

IC6003(FL uCOM)
51 pin oscillating (2 MHz)

Yes

No

No

Replace IC6003
or DISPLAY ASSY

Diagnose VREG CHILD_S
ASSY
(around IC8701:V+5_V) and
V-REG_S ASSY (around
D7563, D7564:-VF)
Replace VREG CHILD_S ASSY
or replace V -REG_S ASSY

Check the path of FL AC1 and AC2
DISPLAY ASSY



V-REG_S ASSY  MAIN TRANS

Check DISPLAY ASSY
V6001(FL Display)
1,62pin 4.3Vac

Check DISPLAY ASSY
IC6003(FL uCOM)
56 pin +5.0V (V+5_V),

52 pin +5.0V (XFLRST)

Check the path of V+5_V or XFLRST
or replace DISPLAY ASSY

No

Yes

6 7 8

NO FL DISPLAY

A

B

C

D

5

SC-91

6 7 8

E

F

29

1

EXT STEREO mode : 2ch signals are distributed to all channels.
OPTIMUM Surr mode : Surround mode of headphones



No sound from speakers (Single channel - Check only the signal path of the relevant channel. Plural channels

- There may be troubles with power source, control signals: MUTE, DET and others. Bad connection of cables
and connectors should be also considered.)

No sound only from front
channels (L/R 2 channels)

The sound of the relevant
channel does not come form Preout.

Sound comes form speakers in Pure Direct by
applying a signal to analog input terminal.

The signal of the relevant channel
exists in PRE BRIDGE_S ASSY.

Check the path of
the relevant
channel in AUDIO
ASSY.

Check the signal path of the relevant channel in
IR BUFFER_S ASSY, or check the path of the power supply
to the relevant channel.

In EXT STEREO, the signal of the
relevant channel does not exist in
A-DAC BRIDGE ASSY.

Check the path of the relevant
channel in AUDIO ASSY.

Check the signal path of the relevant channel in
IR INTERFACE_S ASSY, or check the path of the power
supply to the relevant channel.

The signal of the relevant channel
does not exist in D-FILTER
BRIDGE_S ASSY.

Check the path of the relevant
channel in FILTER_S ASSY.

Check the path of the relevant channel in D AMP_SS ASSY.

Check the path of the relevant
signal in DIGITAL MAIN_L ASSY.



No sound only from Preout (Single channel - Check only the signal path of the relevant channel. Plural channels

- There may be troubles with power source, control signals: MUTE, DET and others. Bad connection of cables
and connectors should be also considered.)

No sound only in DVROUT - Check the relevant path in AUDIO ASSY .

No sound from speakers additionally

Check the path of the relevant channel
in AUDIO ASSY.

In EXT STEREO, the signal of the relevant channel does not exist in
A-DAC BRIDGE ASSY.

Check the path of the relevant channel
in AUDIO ASSY.

The signal of the relevant channel does not exist in D-FILTER
BRIDGE_S ASSY.

Check the path of the relevant channel
in FILTER_S ASSY.

Check the path of the relevant signal in DIGITAL MAIN _L ASSY.



No sound only in COAX and OPT input (Single channel - Check only the signal path of the relevant channel.

Plural channels - There may be troubles with power source, control signals: MUTE, DET and others.
Bad connection of cables and connectors should be also considered.)

The signal of the relevant channel exists in OPT COAX_S ASSY.

Check the path of the relevant channel
in OPT COAX_S ASSY.

Check the path of the relevant signal in DIGITAL MAIN_L ASSY.

No No No

Yes

Yes

Yes

Yes

Yes

Yes

OK

OK

No

No

No

Yes

Yes

Yes

No

No

No

Yes

No

2 3 4

NO SOUND (Except for troubles caused by setting and others)

A

B

C

D

E

F

30

1

2 3 4

SC-91