Sharp LC-60LE631M-X Schematic

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1st Addition

SERVICE MANUAL

No.S13M1460LE631MX-WH

LCD COLOUR TELEVISION

MODEL :LC-60LE631M-WH

LC-60LE631X-WH

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

CONTENTS

CHAPTER 1.OUTLINE AND DIFFERENCES FROM BASE MODEL

OUTLINE/ DIFFERENCES FROM BASE MODEL ...1

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY

PRECAUTION.......................................1-2

PRECAUTION FOR USING LEED-FREE

SOLDER...............................................1-3

[2] MAJOR SERVICE PARTS

MAJOR SERVICE PARTS......................1-4

CHAPTER 2. SPECIFICATIONS

[1] SPECIFICATION.................................2-1

CHAPTER 3.OPERATION MANUAL

[1] OPERATION MANUAL........................3-1

CHAPTER 4.DIMENSIONS

[1] DIMENSIONS ............................. .. 4-1

CHAPTER 5. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS...........5-1

CHAPTER 6. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE .........................6-1

CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM ............................7-1

[2] SYSTEM BLOCK DIAGRAM............................ 7-2

CHAPTER 8. PRINTED WIRING BOARD ASSEMBLIES

[1] Main Unit ...................................................8-1

[2] T-CON Unit ..............................................8-9

[3] RC/LED Unit ......................................... ..8-13

[4] KEY Unit ...................................................8-15

CHAPTER 9. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC

DIAGRAM..................................................9-1

[2] MAIN Unit.. ...............................................9-2

[3] T-CON Unit. .............................................9-5

[4] RC/LED Unit ............................................9-15

[5] KEY Unit ...................................................9-17

Parts Guide

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used for after sales service only. The contents are subject to change without notice.

LC-60LE631M/X-WH

CHAPTER 1. OUTLINE AND DIFFER-

ENCES FROM BASE MODEL

[1] OUTLINE / DIFFERENCES FROM BASE MODEL

This model is based on the LC-60LE630M/X and partially modified.

For the contents not covered in this Service Manual, accordingly, please refer to the LC-60LE630M/X Service Manual

DIFFERENCES FROM BASE MODEL

LIST OF CHANGED PARTS

Ref. No. Description

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit DKEYMF904FMG1 DKEYMF904FM10 Part code changed

N MAIN Unit DKEYMF904FMG2 DKEYMF904FM12 Part code changed

t RUNTKF799FMF7 DUNTKG016FMF8 ChangedinUDELC/RN

t DUNTKF800FMF7 DUNTKF800FMF8 ChangedinUYEKN

t RUNTKA847WJN1 RUNTKB057WJQZ ChangedinUREWOPN

N T-CON DUNTKF908FM06 DUNTKF908FM11 Changed

LCD PANEL

N LCD Panel Module Unit R1LK600D3GW8BW R1LK600D3GV0DF Changed

LC-60LE630M/X

KEYMF904FM10 (60LE631M-WH) Part code changed

KEYMF904FM12 (60LE631X-WH) Part code changed

LC-60LE631M/X-WH Note

CABINET PARTS, SUPPLIED ACCESSORIES, PACKING PARTS (NOT REPLACEMENT ITEM), SERVICE JIGS (USE FOR SERVICING)

Please refer to a Parts list.

1 – 1

LC-60LE631M/X-WH

SAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRE CAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY P RECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUT IONSAFETY



LC32LE240M

5GTXKEG/CPWCN

IMPORTANT SERVICE SAFETY PRECAUTION

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

BEFORE RETURNING THE RECEIVER (Fire &

All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.)

Any reading of 0.74 Vrms (this corresponds to 0.5 mA rms AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

Shock Hazard)

Before returning the receiver to the user, perform the following safety checks:

3. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver.

4. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

5. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 110-240 volt AC outlet.

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15 F capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

TO EXPOSED METAL PARTS

DVM

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

Many electrical and mechanical parts in LCD colour television have special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc.

Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features

are identified by " " and shaded areas in the Replacement Parts List and Schematic Diagrams.

PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIO NSAFETY PRECAUTIONSAFETY PRECAUTIO N

For continued protection, replacement parts must be identical to those used in the original circuit.

The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.

1 – 2

LC-60LE631M/X-WH

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

Example:

Indicates lead-free solder of tin, silver and copper. Indicates lead-free solder of tin, silver and copper.

Using lead-free wire solder

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required.

If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

• Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

PARTS CODE

ZHNDAi123250E BL J 0.3mm 250g (1roll) ZHNDAi126500E BK J 0.6mm 500g (1roll) ZHNDAi12801KE BM J 1.0mm 1kg (1roll)

PRICE RANK

PART

DELIVERY

DESCRIPTION

1 – 3

[2] MAJOR SERVICE PARTS



LC60LE630M

MAJOR SERVICE PARTS

PWB UNIT

N DKEYMF904FM10 MAIN Unit (LC-60LE631M-WH)

N DKEYMF904FM12 MAIN Unit (LC-60LE631X-WH) N DUNTKG016FMF8 R/C LED Unit N DUNTKF800FMF8 KEY Unit N RUNTKB057WJQZ POWER Unit

N DUNTKF908FM11 T-CON

LC-60LE631M/X-WH

noitpircseD.oNtraP.oNfeR

Unit

OTHER UNIT

N R1LK600D3GV0DF 60" LCD Panel Module Unit

SERVICE JIGS

noitpircseD.oNtraP.oNfeR

yt’QnoitpircseD.oNtraP.oNfeR

2T-Con - LCD Panel,droCgnitcennoCZQJW222C-WNCQN

1-T-Con (LW)niaM,droCgnitcennoCZQJW676F-WNCQN

1-T-Con (PL)niaM,droCgnitcennoCZQJW504G-WNCQN

1)DP(rewoP-niaM,droCgnitcennoC-WNCQCNW-N125WJPZN

1 – 4

LC-60LE631M/X-WH

CHAPTER 2. SPECIFICATIONS

[1] SPECIFICATIONS

Item

LCD panel Resolution

Video Colour System PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60 TV

TV-Standard

Function

TV-Standard

(60LE631X-WH)

Receiving

Channel

TV-Tuning System Auto Preset 99 ch

STEREO/BILINGUAL NICAM: B/G, I, D/K A2 stereo: B/G Viewing angles H : 176º V : 176º Audio amplifier

Speakers

Terminals Antenna input

HDMI 1

HDMI 2 HDMI 3 INPUT 4 VIDEO in, AUDIO in INPUT 5 VIDEO in, AUDIO in INPUT 6

AUDIO OUT Audio out AUDIO IN (R/L) Ø 3.5 mm jack* PC USB USB RS-232C 9 pin D-sub male connector DIGITAL AUDIO OUTPUT Headphones

OSD language (60LE631M-WH)

OSD language (60LE631X-WH) Power Requirement AC 110 — 240 V, 50/60 Hz Power Consumption 188 W (0.5 W Standby)

Dimensions

Weight without stand (with stand) 25.5 kg (28.5 kg) Operating Temperature 0°C — 40°C

* The HDMI1 and PC terminals can both use the same audio input terminal.

As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some

without stand (mm)

with stand (mm)

Model

LC-60LE631M-WH / LC-60LE631X-WH

60" (1525 mm) Active Matrix type a - Si TFT

2,073,600 pixels (1920 x 1080)

( 60LE631M-WH )

Analogue Digital

VHF/UHF CATV S1 — S41ch (including Hyperband)

PAL: B/G, D/K, I SECAM: B/G, D/K, K/K1NTSC: M PAL: B/G, D/K, I SECAM: B/G, D/K, K/K

DVB-T

44.25 — 863.25 MHz

10 W x 2

3.2 x 15 cm 2pcs

UHF/VHF 75 HDMI (HDMI input) (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz,

1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz), AUDIO in (common use with PC) (Ø 3.5 mm jack)

HDMI (HDMI input) (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz, 1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz)

AUDIO in, COMPONENT in (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz, 1080I/60Hz)

15 pin mini D-sub, AUDIO in (common use with HDMI 1) (Ø 3.5 mm jack)

Optical Digital Audio Output

Ø3.5mmjack

English/Simplified Chinese/Arabic/French/Portuguese/Russian/Persian/Thai/ Vietnamese/Indonesian

English

1384 (W) x 839 (H) x 73 (D)

1384 (W) x 874 (H) x 341.5 (D )

deviations from these values in individual units.

DIN type

2 – 1

CHAPTER 3. OPERATION MANUAL

[1] OPERATION MANUAL

Attaching the stand unit

Before performing work, spread cushioning over the surface

on which you will be laying the TV. This will prevent it from being damaged.

CAUTION



Attach the stand in the correct direction. Be sure to follow the instructions. Incorrect installation of the stand may result in the TV falling over.

C onfirm that there are sc re ws w ith the stand unit.

(Eight long screws and four short screws)

Attaching the s tand cover.

Insert the stand cover.

Insert and tighten four short screws into the holes of the stand cover.

LC-60LE631M/X-WH

Atta c h the s upporting pos t for the s tand unit onto thebaseusingthelongscrewswithascrewdriver as shown.

Supporting

post

Front

Ins ert the s tand into the op enings on the bottom of the TV (hold the stand so it will not drop from the edge of the bas e a rea).

Soft cushion

NOTE

To detach the stand unit, perform the steps in reverse order.



A screwdriver is not supplied with this product.



3 – 1

LC-60LE631M/X-WH

CHAPTER 4. DIMENSIONS

[1] DIMENSIONS

Dimensional drawings

1384

1333

Unit: mm

400

Active area

NOTE

• Dimensions do not include protrusions such as screws and some parts.

106

341.5

AN-52AG4

6 38

78 1

8 43

219

4 – 1

CHAPTER 5. REMOVING OF MAJOR

PARTS

[1] REMOVING OF MAJOR PARTS

1. Removing of the Stand Unit and Rear Cabinet

1. Remove the 4 lock screws [1] and detach the Stand Unit [2].

2. Remove the 1 lock screw [3] and detach the AC Cord Cover [4].

3. Disconnect AC Cord [5].

4. Remove the 16 lock screws [6],

Remove the 10 lock screws [10],

1 lock screw

[7], 3 lock screws [8], 2 lock screw

and detach the Rear Cabinet A ss’y [11].

LC-60LE631M/X-WH

JOR

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

MAJ

PAR

[9],

5 – 1

LC-60LE631M/X-WH

2. Removing of Connectors

1. Disconnect the following connectors from the MAIN Unit. (PD, LW, PL, RA)

2. Disconnect the following connectors from the POWER Unit. ( PD )

3. Disconnect the following connectors from the LCD CONTROL Unit. (LW, PL, FFC)

4. Disconnect the following connectors from the KEY Unit. (KM)

5. Disconnect the following connectors from the R/C, LED Unit. (RA)

5 – 2

R emoving of S peaker (L/R)

R emove the 4 Hooks and detach the 2 Bottom Cover .

Detach the S peake r (L) , S pea ker (R) .

(1)

LC-60LE631M/X-WH

(8)

(2)

5 – 3

LC-60LE631M/X-WH

4. Removing of the PWB Units

1. Detach the Key Cover [1], remove the 2 lock screws [2], detach the Key Button [3] and detach the KEY Unit [4].

De tach the R/C LED Unit [5].

3. Detach the Side Cover [6].

4. Remove the 2 lock hexagon screws [7] and 2 lock hexagon screws [8].

5. Remove the 10 lock screws [9] and detach the MAIN Unit [10] and POWER Unit [11].

6. Remove the 6 lock screws [12] and detach the LCD CONTROL Unit [13].

Key Button

POWER Unit

Side Cover

MAIN Unit

KEY Unit

KEY Cover

LCD CONTROL Unit

R/C LED Unit

5 – 4

5. Removing of the LCD Panel Module Unit

Detach the 21 Hooks [1] and detach the LCD Panel Module Unit [2].

LC-60LE631M/X-WH

5 – 5

LC-60LE631M/X-WH

[ 2 ] PRECAUTIONS FOR ASSEMBLY

[Precautions when fixing the Rear Cabinet]

When fixing the Rear Cabinet, be careful not to catch the backlight LED harness, speaker harness and other harnesses in it.

• The hooks on the external wall of the Rear Cabinet are fitted in the Front Cabinet Ass’y. After putting the Rear Cabinet in place, fit the hooks securely; then tighten the screws.

(Work method of Rear Cabinet fixation)

Rear Cabinet (Mat parts)

Front Cabinet Ass'y (Luster parts)

There is a gap without the fingernail fitting in completely only when covering with Rear Cabinet. It becomes the factor of a gap increase of Front Cabinet Ass'y/Rear Cabinet and the Rear Cabinet misregistration.

Please tighten the screw after Rear Cabinet is firmly pushed, and the fingernail is confirmed.

(Front Cabinet Ass’y/Rear Cabinet fingernail fixation place)

5 – 6

LC-60LE631M/X-WH

[3] THE way of detaching Rear Cabinet

[Precaution when removing the rear cabinet]

If the rear cabinet is removed with the set upright, the speakers may fall; it results in connector disconnection. Therefore, never remove the rear cabinet with the set upright.

Be sure to remove the rear cabinet with the screen side down.

Screws for fixing Speaker and Rear Cabinet

[Precaution when mounting the rear cabinet]

Put the speakers in place with the screen side down, and attach the rear cabinet.

Since the speakers are fixed by the rear cabinet, they cannot be fixed without the rear cabinet.

Speaker incline.

Speaker fall down.

5 – 7

LC-60LE631M/X-WH

CHAPTER 6. TROUBLESHOOTING

TABLE

[1] TROUBLESHOOTING TABLE

No power (front LED failure to light up) or no startup (front LED failure to turn from red to green)

eRON?tesehtotdetcennocylthgitgulpdrocCAehtsI connect the AC cord tightly and turn on the power again.

Is the output voltage at pin (9) of P9601 (BU+5V line) as specified? Is the output voltage at pin (17), (18), (19) and (20) of P9601 (13V line) as specified?

Are the wire harnesses and other cables properly conn ected in the set?

Is there the AC_DET and PNL_ON signal input at pins (11) and (10) of P9601?

Are the DC/DC converter outputs and the output voltages along the control lines as specified?

1) B1.26V (IC9604)

2) B5.6V (IC9602)

3) BU3.3V (IC9601)

4) D3.3V (IC9606)

5) B5V (IC9611)

6) B1.8V (IC9610)

7) AU3.3V (IC9603)

8) AU1.8V (IC9607)

With [RF] signal input No video onscreen (1)

YES

NO Replace the power unit.

YES

NO Reconnect the wire harnesses and other cables properly in the

set.

YES

NO Check the AC_DET signal line PNL_ON signal line.

YES

NO Check the DC/DC converters and the control lines. Replace

defective parts as required.

No video in the UHF/VHF reception

Is there IF output from the tuner pin(12) of TU1103 as specified? Is there VIDEO output from the tuner pin(16) of TU1103 as specified?

YES

Is there VIDEO input at pin (M3) of IC .3033CI&3011UTneewtebtiucricehtkcehCON?3033

YES Are there the signal outputs at pin AC (21), (22), (23), (24), AD (21), (22), (23), (24) and AE (21), (22), (23), (24) of IC3303?

YES Check LVDS cable, LCD controller (incl. panel) and their peripheral circuits.

NO Check IC3303 and its peripheral circuit.

Check TU1103 and its peripheral circuits.

6 – 1

LC-60LE631M/X-WH

No audio heard (1)

No sound in the UHF/VHF reception.

Is the IF output from the tuner pin (13) of TU1103 as specified? NO Check TU1103 and its peripheral circuits.

YES

Is there the signal input at pins (W3) of .stiucriclarehpirepstidna3033CIkcehCON?3033CI

YES

Is there I2S_LRCLK signal input at pin(9) of stidna7072CIdna3033CIneewtebnoitcennockcehCON?7072CI

peripheral circuits.

YES

peripheral circuits.

YES Is the L-ch audio signal output at pin(28) and (30) of IC2704 normal? NO Check IC2704 and its peripheral circuits. Is the R-ch audio signal output at pin(12) and (14) of IC2704 normal?

YES Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of

P2702 normal?

YES Check speakers and their peripheral circuits.

NO Check circuit between IC2704 & P2702.

stidna4072CIdna7072CIneewtebnoitcennockcehCON?4072CIfo)8(niptatupnilangisKLCRL_PMAerehtsI

6 – 2

LC-60LE631M/X-WH

No external audio heard <INPUT 4> Is there the L-ch audio signal input from pin (15) of input terminal

J504 to pin (AE2) of IC3303? Is there the R-ch audio signal input from pin (8) of input terminal J504 to pin (AE3) of IC3303?

<INPUT 5> Is there the L-ch audio signal input from pin (16) of input terminal

J504 to pin (AB1) of IC3303? Is there the R-ch audio signal input from pin (10) of input terminal J504 to pin (AA1) of IC3303?

<INPUT 6> Is there the L-ch audio signal input from pin (2) of input terminal

J503 to pin (Y1) of IC3303? Is there the R-ch audio signal input from pin (4) of input terminal J503 to pin (AA3) of IC3303?

No audio heard (2)

YES

Is there the I2S signal output at pin A8, C7, B7 and D8 of IC3303? NO Check IC3303 and its peripheral circuits.

YES

Is there I2S_LRCLK signal input at pin(9) of IC2707? NO Check connection between IC3303 and IC2707 and its periph-

eral circuits.

YES

Is there AMP_LRCLK signal input at pin(8) of IC2704? NO Check connection between IC2707 and IC2704 and its periph-

eral circuits.

YES

Is the L-ch audio signal output at pin(28) and (30) of IC2704 normal?

Is the R-ch audio signal output at pin(12) and (14) of IC2704 normal?

YES

Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of P2702 normal?

NO Check IC2704 and its peripheral circuits.

NO Check circuit between IC2704 & P2702.

YES

Check speakers and their peripheral circuits.

6 – 3

No HDMI sound heard. HDMI1 (*INPUT 1 is digital audio.)

LC-60LE631M/X-WH

No audio heard (3)

.”)IMDH(neercsnooedivtupnilanretxeoNni1IMDH“otrefeRON?neercsnoraeppaegamiIMDHehtseoD

YES

.DIDEehtkcehCON.1IMDHmorftuptuooiduaoN

YES

Are waveforms input in to the pin F1, F2, G1, G2, G3, H1, H2 and H3 of IC3303 normally and I2S output normally? Are waveforms input in to the pin A8, C7, B7 and D8 of IC3303 normally and I2S output normally?

YES

Is there I2S_LRCLK signal input at pin(9) of IC2707? NO Check connection between IC3303 and IC2707 and its periph-

YES

Is there AMP_LRCLK signal input at pin(8) of IC2704? NO Check connection between IC2707 and IC2704 and its periph-

YES

Is the L-ch audio signal output at pin (28) and (30) of IC2704 normal?

Is the R-ch audio signal output at pin (12) and (14) of IC2704 normal?

YES

Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of P2702 normal?

NO Check peripheral circuits of IC3303.

eral circuits.

NO Check IC2704 and its peripheral circuits.

NO Check circuit between IC2704 & P2702.

YES

Check speakers and their peripheral circuits.

6 – 4

LC-60LE631M/X-WH

No sound from the HDMI sound input terminal. (HDMI1 analog audio)

Is there the L-ch audio signal input from pin (2) of external input terminal J506 (HDMI AUDIO IN) to pin (AC2) of IC3303?

Is there the R-ch audio signal input from pin (3) of external input terminal J506 (HDMI AUDIO IN) to pin (AB2) of IC3303?

Are I2S signal output at pin A8, C7, B7 and D8 of IC3303 normally?

No audio heard (4)

YES

NO Check peripheral circuits of IC3303.

YES

Is there I2S_LRCLK signal input at pin(9) of IC2707? NO Check connection between IC3303 and IC2707 and its periph-

eral circuits.

YES

Is there AMP_LRCLK signal input at pin(8) of IC2704? NO Check connection between IC2707 and IC2704 and its periph-

eral circuits.

YES

Is the L-ch audio signal output at pin(28) and (30) of IC2704 normal?

Is the R-ch audio signal output at pin(12) and (14) of IC2704 normal?

YES

Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of P2702 normal?

YES

Check speakers and their peripheral circuits.

NO Check IC2704 and its peripheral circuits.

NO Check circuit between IC2704 & P2702.

6 – 5

No audio heard (5)

No PC audio output

YES Pin (2) of J506: Is L-ch input into the pin (AC2) of IC3303? Pin (3) of J506: Is R-ch input into the pin (AB2) of IC3303?

YES Are I2S signal output at pin A8, C7, B7 and D8 of IC3303 normally? NO Check peripheral circuits of IC3303.

LC-60LE631M/X-WH

YES Is there I2S_LRCLK signal input at pin(9) of IC2707? NO Check connection between IC3303 and IC2707 and its

peripheral circuits.

YES Is there AMP_LRCLK signal input at pin(8) of IC2704? NO Check connection between IC2707 and IC2704 and its

peripheral circuits.

YES Is the L-ch audio signal output at pin(28) and (30) of IC2704 normal? NO Check IC2704 and its peripheral circuits. Is the R-ch audio signal output at pin(12) and (14) of IC2704 normal?

YES Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of

P2702 normal?

YES Check speakers and their peripheral circuits.

NO Check circuit between IC2704 & P2702.

6 – 6

+ 48 hidden pages