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

CHAPTER 5. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS...........		5-1
CHAPTER 6. TROUBLESHOOTING TABLE		6-1
[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

KEYMF904FM10 (60LE631M-WH)	Part code changed
KEYMF904FM12 (60LE631X-WH)	Part code changed

Ref. No.	Description	LC-60LE630M/X	LC-60LE631M/X-WH	Note
PRINTED WIRING BOARD ASSEMBLIES
N	MAIN Unit	DKEYMF904FMG1	DKEYMF904FM10	Part code changed

N	MAIN Unit	DKEYMF904FMG2	DKEYMF904FM12	Part code changed
N	R/C LED Unit	RUNTKF799FMF7	DUNTKG016FMF8	Changed
N	KEY Unit	DUNTKF800FMF7	DUNTKF800FMF8	Changed

N	POWER Unit	RUNTKA847WJN1	RUNTKB057WJQZ	Changed

N	T-CON	DUNTKF908FM06	DUNTKF908FM11	Changed

LCD PANEL
N	LCD Panel Module Unit	R1LK600D3GW8BW	R1LK600D3GV0DF	Changed

CABINET PARTS, SUPPLIED ACCESSORIES, PACKING PARTS (NOT REPLACEMENT ITEM), SERVICE JIGS (USE FOR SERVICING) Please refer to a Parts list.

1 – 1

SAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY

LC32LE240M

LC-60LE631M/X-WH

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 &

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.

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.

DVM

AC SCALE

1.5k ohm

10W

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.

0.15 µF

TEST PROBE

TO EXPOSED	CONNECT TO
METAL PARTS	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.

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.

PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTION

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	PRICE	PART	DESCRIPTION
PARTS CODE	RANK	DELIVERY	DESCRIPTION
	RANK	DELIVERY
ZHNDAi123250E	BL	J	0.3mm 250g (1roll)
ZHNDAi126500E	BK	J	0.6mm 500g (1roll)
ZHNDAi12801KE	BM	J	1.0mm 1kg (1roll)

1 – 3

LC-60LE631M/X-WH

[2] MAJOR SERVICE PARTS

MAJOR SERVICE PARTS

PWB UNIT

Ref No.	Part No.	Description
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 Unit

OTHER UNIT

Ref No.	Part No.	Description
N	R1LK600D3GV0DF	60" LCD Panel Module Unit

SERVICE JIGS

Ref No.	Part No.		Description	Q’ty
N	QCNW-C222WJQZ	Connecting Cord,T-Con - LCD Panel		2
N	QCNW-F676WJQZ	Connecting Cord, Main-T-Con (LW)		1
N	QCNW-G405WJQZ	Connecting Cord, Main-T-Con (PL)		1
N	QCNW-N125WJPZ	Connecting Cord, Main-Power (PD)		1

1 – 4

LC-60LE631M/X-WH

CHAPTER 2. SPECIFICATIONS

[1] SPECIFICATIONS

Item				Model	LC-60LE631M-WH / LC-60LE631X-WH

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

Resolution					2,073,600 pixels (1920 x 1080)

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

TV	TV-Standard ( 60LE631M-WH )				PAL: B/G, D/K, I SECAM: B/G, D/K, K/K1 NTSC: M
Function
	TV-Standard			Analogue	PAL: B/G, D/K, I SECAM: B/G, D/K, K/K1
	(60LE631X-WH)			Digital	DVB-T
	Receiving			VHF/UHF	44.25 — 863.25 MHz
	Channel
				CATV	S1 — S41ch (including Hyperband)


	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					10 W x 2

Speakers					3.2 x 15 cm	2pcs

Terminals		Antenna input			UHF/VHF 75	DIN type

		HDMI 1			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 2			HDMI (HDMI input) (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz,
		HDMI 3			1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz)

		INPUT 4			VIDEO in, AUDIO in

		INPUT 5			VIDEO in, AUDIO in

		INPUT 6			AUDIO in, COMPONENT in (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz,
					1080I/50Hz, 1080I/60Hz)

		AUDIO OUT			Audio out

		AUDIO IN (R/L)			Ø 3.5 mm jack*

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

		USB			USB

		RS-232C			9 pin D-sub male connector

		DIGITAL AUDIO OUTPUT			Optical Digital Audio Output

		Headphones			Ø 3.5 mm jack

OSD language (60LE631M-WH)					English/Simplified Chinese/Arabic/French/Portuguese/Russian/Persian/Thai/
					Vietnamese/Indonesian
OSD language (60LE631X-WH)					English
Power Requirement					AC 110 — 240 V, 50/60 Hz

Power Consumption					188 W (0.5 W Standby)

Dimensions			without stand (mm)		1384 (W) x 839 (H) x 73 (D)

			with stand (mm)		1384 (W) x 874 (H) x 341.5 (D)

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 deviations from these values in individual units.

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.

1 C onfirm that there are s crews with the s tand unit.

(Eight long screws and four short screws)

2 Attach the s upporting pos t for the s tand unit onto the bas e us ing the long s crews with a s crewdriver as s hown.

Supporting

post

Front

3 Ins ert the s tand into the openings on the bottom of the TV (hold the s tand s o it will not drop from the edge of the bas e area).

Soft cushion

LC-60LE631M/X-WH

4 Attaching the s tand cover.

1Insert the stand cover.

2Insert and tighten four short screws into the holes of the stand cover.

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

Unit: mm

1384

1333*1*1

341.5

400

10 ο

78 1

106

219

AN-52AG4

6 38

8 43

I Active area

NOTE

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

4 – 1

CHAPTER 5. REMOVING OF MAJOR

PARTS

JOR

PAR

TRE

VIN

[1] REMOVING OF MAJOR PARTS G

MAJ

PAR

TRE

1. Removing of the Stand Unit and Rear CabinetVIN

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

PAR

TRE

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

VIN

3. Disconnect AC Cord [5]. OF

MAJ

4. Remove the 16 lock screws [6], 1 lock screw [7], 3 lock screwsPAR [8], 2 lock screw [9],

TRE

VIN

5. Remove the 10 lock screws [10], and detach the Rear CabinetG A ss’y [11].

MAJ

PAR

TRE

VIN

MAJ

PAR

TRE

VIN

LC-60LE631M/X-WH

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

LC-60LE631M/X-WH

3. R emoving of S peaker (L/R)

1. R emove the 4 Hooks and detach the 2 Bottom Cover (8) .

2. Detach the S peake r (L) (1) , S pea ker (R) (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].

2.Detach 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].

10 9 7

Side Cover

8	MAIN Unit 10

POWER Unit 11

Key Button
3	2
3

KEY Unit

KEY Cover

R/C LED Unit 5

LCD CONTROL Unit 13

5 – 4

LC-60LE631M/X-WH

5. Removing of the LCD Panel Module Unit

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

5 – 5

LC-60LE631M/X-WH

[2]PRECAUTIONSFORASSEMBLY

[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.

		Speaker fall down.
Screws for fixing Speaker	Speaker incline.
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.

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)

Is the AC cord plug tightly connected to the set?

YES

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?

NO		Reconnect the AC cord tightly and turn on the power again.



NO		Replace the power unit.

		YES
Are the wire harnesses and other cables properly connected in			NO	Reconnect the wire harnesses and other cables properly in the
the set?				set.

		YES


Is there the AC_DET and PNL_ON signal input at pins (11) and			NO	Check the AC_DET signal line PNL_ON signal line.
(10) of P9601?

		YES


Are the DC/DC converter outputs and the output voltages along			NO	Check the DC/DC converters and the control lines. Replace
the control lines as specified?				defective parts as required.

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)



No video in the UHF/VHF reception



Is there IF output from the tuner pin(12) of TU1103 as specified?			NO	Check TU1103 and its peripheral circuits.
Is there VIDEO output from the tuner pin(16) of TU1103 as speci-
fied?
	YES


Is there VIDEO input at pin (M3) of IC3303?			NO	Check the circuit between TU1103 & IC3303.


	YES


Are there the signal outputs at pin AC (21), (22), (23), (24), AD			NO	Check IC3303 and its peripheral circuit.
(21), (22), (23), (24) and AE (21), (22), (23), (24) of IC3303?

	YES


Check LVDS cable, LCD controller (incl. panel) and their periph-
eral 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 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
			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		NO	Check circuit between IC2704 & P2702.
P2702 normal?

	YES


Check speakers and their peripheral circuits.

6 – 2

LC-60LE631M/X-WH

No audio heard (2)

No external audio heard

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?

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?

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?

YES

Is there the I2S signal output at pin A8, C7, B7 and D8 of IC3303?

YES

Is there I2S_LRCLK signal input at pin(9) of IC2707?

YES

Is there AMP_LRCLK signal input at pin(8) of IC2704?

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 IC3303 and its peripheral circuits.





	NO			Check connection between IC3303 and IC2707 and its periph-
				eral circuits.
				eral circuits.



	NO			Check connection between IC2707 and IC2704 and its periph-
				eral circuits.
				eral circuits.



	NO			Check IC2704 and its peripheral circuits.





	NO			Check circuit between IC2704 & P2702.

6 – 3

LC-60LE631M/X-WH

No audio heard (3)

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

Does the HDMI image appear onscreen?

YES

No audio output from HDMI1.

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?

YES

Is there AMP_LRCLK signal input at pin(8) of IC2704?

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				Refer to “HDMI1 in No external input video onscreen (HDMI)”.

	NO			Check the EDID.

	NO				Check peripheral circuits of IC3303.

	NO				Check connection between IC3303 and IC2707 and its periph-
					eral circuits.
					eral circuits.

	NO				Check connection between IC2707 and IC2704 and its periph-
					eral circuits.
					eral circuits.

	NO			Check IC2704 and its peripheral circuits.

	NO				Check circuit between IC2704 & P2702.

6 – 4

LC-60LE631M/X-WH

No audio heard (4)

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

YES

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?

	YES



Are I2S signal output at pin A8, C7, B7 and D8 of IC3303 nor-		NO	Check peripheral circuits of IC3303.
mally?
mally?


	YES




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


	YES




Is the L-ch audio signal output at pin(28) and (30) of IC2704 nor-		NO	Check IC2704 and its peripheral circuits.
mal?
mal?

Is the R-ch audio signal output at pin(12) and (14) of IC2704 nor-

mal?
	YES




Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of		NO	Check circuit between IC2704 & P2702.
P2702 normal?
P2702 normal?


	YES




Check speakers and their peripheral circuits.

6 – 5

LC-60LE631M/X-WH

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?

YES

Is there I2S_LRCLK signal input at pin(9) of IC2707?

YES

Is there AMP_LRCLK signal input at pin(8) of IC2704?

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 peripheral circuits of IC3303.

	NO			Check connection between IC3303 and IC2707 and its
				peripheral circuits.
				peripheral circuits.

	NO			Check connection between IC2707 and IC2704 and its
				peripheral circuits.
				peripheral circuits.

	NO			Check IC2704 and its peripheral circuits.

	NO			Check circuit between IC2704 & P2702.

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