Sony KLV-22BX350 Schematic

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MA N U A L

LCCT CHASSIS

Segment: P-2F

Version	Date	Subject
1	1/2012	1ST Issue
2	3/2012	New Model Addition : KLV-32BX350/ , KLV-40BX450/1 ( Pg 91)

LCD TV

9-888-133-02

SERVICE MANUAL

LCCT CHASSIS

Segment: P-2F

LCD TV

9-888-133-0

MODEL LIST

MODEL

COLOR

COMMANDER

DEST.

MODEL

COLOR

COMMANDER

DEST.

KLV-22BX350

Black

RM-GA021

Singapore,

KLV-32BX35A

Black

RM-GA021

Singapore,

Indonesia,

Indonesia,

Philippines,

Vietnam,

SOGUL,

Philippines,

South Africa, India

Thailand, Malaysia

Malaysia, Saudi

KLV-26BX350

Black

RM-GA021

Singapore,

KLV-40BX450

Black

RM-GA021

Singapore,

SOGUL,

Indonesia,

South Africa, India

Vietnam,

Thailand, Saudi

Philippines,

SOGUL,

South Africa, India

Thailand, Malaysia

Saudi, Iran

KLV-32BX350

Black

RM-GA021

Singapore,

KLV-46BX450

Black

RM-GA021

Singapore,

Indonesia,

Indonesia,

Vietnam,

Vietnam,

Philippines,

Philippines,

SOGUL,

SOGUL,

South Africa, India

South Africa, India

Thailand, Malaysia

Thailand, Malaysia

Saudi, Iran

Saudi, Iran

3

KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450

RM-GA021

TABLE OF CONTENTS

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Page

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4

KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450

SECTION 1

RM-GA021

SAFETY NOTES

control knobs, shields, covers, ground straps and mounting

1-1. Caution Handling of LCD Panel

3)Check all

When repairing the LCD Panel, make sure you are grounded with a wrist band.

hardware have been replaced. Be absolutely certain you have replaced all

When repairing the LCD Panel on the wall, the panel must be secured using the 4

the insulators.

mounting holes on the rear cover.

4) Look for unauthorized replacement parts, particularly transistors that were

1)

Do not press the panel or frame edge to avoid the risk of electric shock.

installed during a previous repair. Point them out to the customer and

2)

Do not scratch or press on the panel with any sharp objects.

recommend their replacement.

3)

Do not leave the module in high temperature or in areas of high humidity for

5) Look for parts which, though functioning show obvious signs of deterioration.

an extended period of time.

Point them out to the customer and recommend their replacement.

4)

Do not expose the LCD panel to direct sunlight.

6) Check the line cords for cracks and abrasion. Recommend the replacement

5)

Avoid contact with water. It may cause short circuit within the module.

of any such line cord to the customer.

6)

Disconnect the AC power when replacing the backlight (CCFL) or

7) Check the antenna terminals, metal trim, metallized knobs, screws and all

inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms)

other exposed metal parts for AC leakage. Check leakage test as described

7)

Always clean the LCD panel with a soft cloth material.

next.

8)

Use care when handling the wires or connectors of the inverter circuit.

8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.

Damaging the wires may cause a short circuit.

1-3. Leakage Test

9)

Protect the panel from ESD to avoid damaging the electronic circuit

(C-MOS).

The AC leakage from any exposed metal part to earth ground and from all exposed

10) During the repair, DO NOT leave the Power On or Burn-in period for more than

metal parts to any exposed metal part having a return to chassis must not exceed

1 hour while the TV is face down on a cloth.

0.5mA (500 microamperes).

Leakage current can be measured by any one of the three methods:-

1) A commercial leakage tester such as the SIMPSON 229 or RCA WT-540A.

Follow the manufacturers instructions to use those instructions.

2) A battery-operated AC milliampmeter The DATA PRECISION 245 digital

multimeter is suitable for this job.

3) Measuring the voltage drop across a resistor by means of a VOM or battery

operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must

have an accurate low voltage scale. The SIMPSON'S 250 and SANWA

SH-63TRD are examples of passive VOMs that are suitable. Nearly all

Figure 1. TV is faced down on a cloth during repair.

battery operated digital multimeter that have a 2 VAC range are suitable.

(see Figure 2.)

1-2. Safety Check-Out

After correcting the original service problem, perform the following safety checks

before releasing the set to the customer:-

1)

Check the area of your repair for unsoldered or poorly soldered connections.

Check the entire board surface for solder splashes and bridges.

2)

Check the interboard wiring to ensure that no wires are pinched or contact

high-wattage resistors.

Figure 2. AC voltmeter to check AC leakage

5

Safety Notes	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

1-4. How to Find a Good Earth Ground

1)A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground.

2)If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.

3)If a cold-water pipe is not accessible, connect a 60to 100-watt troublelight (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground potential (see Figure 3).

Figure 3. Checking for earth ground.

1-5. Warnings and Caution

1)These servicing instructions are for use by qualified service personnel only.

2)To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.

3)An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of this receiver is directly connected to the ac power line.

4) Be sure to follow these guidelines to protect your property and avoid causing serious injury.

•Carry the TV with an adequate number of people; larger size TVs require two or more people.

•Correct hand placement while carrying the TV is very important for safety and to avoid damages.

5) Components identified by shading and ! mark on the exploded views, and in the parts list are critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. Circuit adjustments that are critical

for safe operation are identified in this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.

1-6. Lead Free Information

The circuit boards used in these models have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation.

Figure 4: LF

Logo

Figure 5: LF logo on circuit board

6

Safety Notes

KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450

RM-GA021

The servicing of these boards requires special precautions. It is strongly

FFC can reverse insertion to connector of BAQ board.

recommended to use Lead Free Solder material in order to guarantee optimal

If reverse insertion FFC, all pins short-circuit, and board is broken.

quality of new solder joints. Lead Free Solder is available under the following

part numbers:-

Part Number

Diameter

Remarks

7-640-005-19

0.3mm

0.25Kg

7-640-005-20

0.4mm

0.50Kg

7-640-005-21

0.5mm

0.50Kg

7-640-005-22

0.6mm

0.25Kg

7-640-005-23

0.8mm

1.00Kg

7-640-005-24

1.0mm

1.00Kg

< Insertion>

7-640-005-25

1.2mm

1.00Kg

7-640-005-26

1.6mm

1.00Kg

Due to high melting point of Lead Free Solder, the soldering iron tip

BAQ Board

temperature needs to be set to 370 degrees centigrade. This requires

soldering equipment capable of accurate temperature control coupled

with a good heat recovery characteristics.

For more information on the use of Lead Free Solder,

please refer to http://www.sony-training.com

1-7. Handling the FLEXIBLE FLAT CABLE (FFC)

<Pull out>

When you insert / pull out FFC, please grasp a reinforcement board

and main body of FFC.

BAQ Board

7

	Safety Notes			KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
				RM-GA021
		1-8. Disassemble Rear Cover (22” )
				Screws detail refer to Section 6

1-9. Assemble Rear Cover (22” )

	Screws detail refer to Section 6	Please press the set (until hear click sound)
		before put at the stand.

8

Safety Notes			KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
					RM-GA021
1-10. Disassemble Rear Cover (26” , 32” . 40” , 46” )
			Screws detail refer to Section 6

1- . Assemble Rear Cover (26” , 32” . 40” , 46”)

26”

32”

40”

46”

	Please press the set (until hear click sound)		Screws detail refer to Section 6
	before put at the stand.
		Cord , Power

9

KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450

SECTION 2

RM-GA021

SELF DIAGNOSTIC FUNCTION

2-1. Overview of Control Buttons

2-2. LED Display Control

Status

Picture Off/

Standby

Power LED

Remarks

Timer LED

LED

1.

Power

Power Off

OFF

OFF

OFF

*1 power switch off (by

( AC Off and *1)

side key)

2.

CH +/-, up/down

3.

Vol +/-, left/right

Power On

OFF

OFF

Green

4.

Input Select, Enter

Standby

OFF

Red

OFF

5.

Home

( by remote control off only )

6.

Remote sensor

Picture Off

Green

Off

Green

7.

Picture Off/Timer Indicator

8.

Standby Indicator

Set "Sleep Timer"

Orange

Off

Green

9.

Power Indicator

Set "On Timer"( Power On )

Orange

Off

Green

Set "On Timer"( Standby )

Orange

Red

Off

Picture Frame

Orange

Off

Green

Red

The number of LED

Failure

Off

Off

blinking indicates

Blinking

cause of failure.

Error of panel ID

Orange

Off

Green

Blinking:0.5sec On /

Blinking

Blinking

0.5sec Off

Software Updating

Orange

Red

Off

Blinking

2-3. LED Pattern

When safety shutdown occurs, Standby LED display reports the cause by using the lightning

patterns as indicated below.

0.5sec

3.0sec

3.0sec

0.5sec

Example: The figure above shows LED display when SHUTDOWN is caused by Audio

Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds

interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.

10

Self Diagnostic Function		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021

2-4. Standby LED Error Display

Note: Details refer to Troubleshooting Section.

	The Number of	Detection Items	Board Error Item	Monitoring Items	Content
	Standby LED
	(RED blinking)
	2	Main Power Error	Power Board Error (G*)	REG12V_MON	Reg 12V failed
	3	Audio Error	B* board Error	X_AUDIO_MON	Audio failure
	5	T-con Error	T-con Board Error	TCON_ERR	T-CON failed
		Panel ID NVM Error		Panel I2C ACK	Panel ID NVM Failed
	6	Backlight Error	Inverter Board Error	BL_ERR	Backlight Error
	-		B* board Error	RTC 12C ACK	RTC IC Failed

Note : When RTC error occurs, Shutdown error count for RTC error is incremented by 1.

TV does not go to Safety Shutdown. Standby LED does not flash.

		Segment	Size	B*	G*
				Board	Board
				Type	Type
		P-2F	22	BAQ	GD1
		P-2F	26	BAQ	G9
		P-2F	32	BAQ	G9
		P-2F	40	BAQ	G10
		P-2F	46	BAQ	G11

11

Self Diagnostic Function		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021

2-5. Triage Chart

Blinking

No Picture

No Sound

2

3

5

6

Tuner

Video1

VIdeo2

Component

HDMI

PC

Main Speaker

HP

Video1

Video2

Component

Tuner

HDMI

USB

BAQ Board

h

h

K

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

HQ board

Tact SW board

GD1 (22")

h

K

K

h

K

K

K

K

K

K

K

G9 (26"&32")

h

K

K

h

K

K

K

K

K

K

K

G10 (40")

h

K

K

h

K

K

K

K

K

K

K

G11 (46")

h

K

K

h

K

K

K

K

K

K

K

T-Con Board

h

K

K

K

K

K

Speaker Unit

K

h

h

Panel Module

h

h

FFC Cable

K

h

h

h

h

h

K

K

Joint Connector

K

K

K

K

K

K

K

K

K

K

Note: Details refer to Troubleshooting Section.

h Doubtful part problem K Few possibility

12

Troubleshooting				KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		SECTION 3		RM-GA021
		TROUBLESHOOTING

3-1. Troubleshooting Flow

START

Does the Power Led

stay on when the

See

TV is switched on ?

No Power

Is the Standby Led	See
blink ?	Standby LED Blink

Green & Amber	Panel ID Error
blink?	Panel Not Supported.

Is the Picture and	See Audio/Video
Sound OK ?	Troubleshooting doc.

END

Note:

1. Details refer to each Troubleshooting Section.

2. Refer to Troubleshooting Reference location.

13

Troubleshooting			KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
							RM-GA021
	3-2. No Power
	No Power
		AC Cord			BAQ Board
	Check AC
	AC IN c
	88 -132V for
	176 – 264V for				• See DDcon
	Mo
	OK
	Check St
	at JL6015
	it is
	OK		OK
	Check
				Segment	Size	B*		G*
	at J
	on B*					Board	Board
	It is12					Type	Type
				P-2F	22	BAQ	GD1
				P-2F	26	BAQ		G9
				P-2F	32	BAQ		G9
				P-2F	40	BAQ	G10
				P-2F	46	BAQ	G11

14

Troubleshooting		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021

3-2-1. *DDcon

START

Check JL6010 Voltage.

Is the voltage 1.2V? no

B* Board

yes

Check JL6011 Voltage.

Is the voltage 1.5V? no

(B* Board)

yes

	Check JL6012 Voltage.	no
	Is the voltage 3.3V?
	B* Board
	yes

Check JL6013 Voltage.

Is the voltage 5.0V? no

B* Board

yes

Check F6000

B* Board

Change

B* Board

Change

B* Board

Change

B* Board

	Check JL6014	no	Change
	Voltage
	Is the voltage 1.2V?		B* Board
	B* Board

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

After checking, take note of

NG condition & change BAQ board

15

Troubleshooting				KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
				RM-GA021
	3-3. Standby Led Blinking
	3-3-1. 2-times Led blinking	3-3-2.	3-times Led blinking
	2 Times Blinking		START

Check Power On	no
at JL6004.		Change B*
Is the voltage 3.3V?
B* Board					Chec
				Speaker I
yes				at SP
Change					OK
G* Board
				Check A
				at CN600
					on B*
					OK
		Segment	Size	B*	G*
				Board	Board
				Type	Type
		P-2F	22	BAQ	GD1

	Check	NG
	AUDIO+12.5V
		Change
	at F4000
		F4000
	B* board

OK

IC4002 damage.

Change B* Board

P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

16

Troubleshooting		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021
	3-3. Standby Led Blinking

3-3-3. 5-times Led blinking

5-times blinking

Check Pin5

PANEL_VCC_SW

CN6001

on the B* Board

OK

Replace the Harness

Between G* and Panel

(a)

NG

Replace

the LVDS Harness

NG

NG

G* Board

Replace B* Board

Symptom	NG
Improved	Harness
	Replace Panel

Symptom

Improved

LVDS Harness

END

Note :

PANEL_VCC_SW = 5V æ22”

= 12V±10% : Others

Symptom

Improved

B* Board

Symptom

Improved

LCD Panel

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

17

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-3. Standby Led Blinking

3-3-4. 6-times Led blinking

START

Check Backlight On,

JL6008 ~ 3V

(B* Board)

OK

Check BL_ERR,

JL6007 ~ 0V

(B* Board)

OK

Check all Harness

OK

NG

B* Board

NG

Inverter/G* Board/Harness

NG Harness

		OK
	Change Inverter.	Inverter	Segment	Size	B*	G*
					Board	Board
	NG				Type	Type
		OK	P-2F	22	BAQ	GD1
	Change G* Board.	G* Board
			P-2F	26	BAQ	G9
	NG
			P-2F	32	BAQ	G9
	Panel		P-2F	40	BAQ	G10
			P-2F	46	BAQ	G11

18

Troubleshooting		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021

3-4. Audio Problem

	Audio Problem	Main Speaker No	Refer “Main Speaker
		Sound
			No Sound”
		HP Out No Sound	Refer “HP Out
			No Sound”
		*V1, V2/D1 or	Refer “Analog Audio
		PC/HDMI analog
			Input
		no sound?
			No Sound”

Analog RF

no sound? Refer “Analog RF

No Sound”

	HDMI Audio	Refer “HDMI Audio
	no sound?
		No Sound”
	USB Audio	Refer “USB Audio
	no sound?
		No Sound”
		* V1 = Video1, V2 = Video2,
		D1 = Component1

19

Troubleshooting			KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
			RM-GA021
	3-4. Audio Problem
	3-4-1. Main Speaker No Sound	Main Spk No
		Sound	A
	NG

Correct UI

Change spk	NG
wire
Change	NG
main spk

NG

Refer “Standby

LED Blink”

Audio UI Setting, ok?			NG	Amp IC /
		CL4000,CL4001
OK		CL4002,CL4003 ~3.3Vdc		Main IC NG
		(BAQ Board)
Spk Wire,
Connector, ok?		OK
OK
		L4000, L4001,	NG
		L4002, L4003 ~ 2.2Vdc, ok?		Amp IC NG
Spk Impedance
7~8ohm, ok?		(BAQ Board)
OK		OK
F4000
Ok?	NG
OK
Check AUDIO+12.5V
at CN6001 pin 17/19
on BAQ Board?		Change BAQ Board
OK

A

20

Troubleshooting		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021
	3-4. Audio Problem

3-4-2. HP Out No Sound

HP Out No Sound

HP cable, ok?

OK

R3073 ~ 3.3Vdc, ok? (when insert HP) –(B * Board)

OK

RB5004 x_audio_mute2,

~ 3.3Vdc (B* board)

OK

Change B* Board

NG

Change HP cable

NG

Detection NG

NG

Main IC NG

3-4-3. Analog Audio Input No Sound

		Analog audio
		input no sound
Change	NG
		Audio RCA cable,
RCA cable			ok?
			OK
Change audio	NG
	Audio analog source,
source			ok?
			OK
		Change B* Board
		Segment		Size		B*	G*
						Board	Board
						Type	Type
		P-2F		22		BAQ	GD1
		P-2F		26		BAQ	G9
		P-2F		32		BAQ	G9
		P-2F		40		BAQ	G10
		P-2F		46		BAQ	G11

21

Troubleshooting		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021
	3-4. Audio Problem

3-4-4. HDMI Audio No Sound

HDMI Audio input no sound

Change	NG	HDMI cable,
HDMI cable
		ok?
		OK
Change HDMI	NG	HDMI source,
source		ok?
		OK
Change to	NG	*HDMI sound
supported format		format ok?
		OK
		Change BAQ Board

* Please refer to IM for supported HDMI audio format.

3-4-5. USB no sound

		USB Audio input
		no sound
		OK
	Change USB	NG
	thumbdrive	USB thumbdrive,
		ok?
		OK
	Change to	NG
	supported format	*USB audio
		format, ok?

OK

Change BAQ Board

* Please refer to IM for supported USB audio format.

22

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-4. Audio Problem

3-4-6. Analog RF no sound

Analog RF input no sound

Change RF	NG
cable
	NG
Change RF
source/channel

NG

Refer “Speaker

No Sound”

NG

Refer “Tuner

Problem”

RF cable,
ok?		UI setting, ok?
OK		(TV System, AFT, Audio Filter)
RF source,
ok?		OK
OK
Raster sound,
ok?
OK		Change B* Board
Tuning,	OK
ok?

NG

Correct UI

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

23

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-4. Audio Problem

3-4-7. 3-times Blinking for Audio Error

TV 3x blinking

B

OK

					Spk Impedance
	OK				7~8ohm, ok?
					NG
	Change spk				Change
					main spk
	wire
					NG
	Power Board NG
	(G*).

Remove spk

connector (CN4000), ok? L4000, L4001, L4002 & L4003 impedance to ground.

(B* Board)

NG

(B* Board)-	NG	Low Z
		(<100Kohm)
F4000
Ok?

OK

Output short to

GND / Amp IC NG

CN6001 pin17,19, 12.5V ok? (B* Board)

OK

High Z

Check impedance (>0ohm)

CN6001 pin19 <-> C4023 (+ve) (B* Board)

	Low Z	Change B* Board
	(~0ohm)

B

Z

Amp IC NG

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

24

Troubleshooting		KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
		RM-GA021

3-5. Video Problem

Picture On Screen
Distorted Or Missing	Check LED 6x	Yes	Refer to Power Troubleshoot (STANDBY LED
	times blink?		BLINK Æ 6x times blinking
Backlight	No
	No
turns ON?

Yes

No

Tuner, OK?

Yes

No

Video 1, OK?

Yes

No

Video 2, OK?

Yes

No

Component, OK?

Yes

No

HDMI, OK?

Yes

No

PC, OK?

Yes

Finish

Refer “ Tuner

Problem”

Refer “Vid eo 1 Problem”

Refer “Vid eo 2 Problem”

Refer “ Component

Problem”

Refer “ HDMI

Problem”

Refer “P C

Problem”

	Check Eco	Yes
	Power Saving	Refer to IM Eco
	ON?
		Power Saving
		Setting
	No
		Change B*
		board

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

25

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-5. Video Problem

3-5-1. Tuner Troubleshooting Flow

Analog RF input no picture

Check RF source cable and antenna, OK?

OK

Check JL1003 =

+3.3V?

OK

Check R1030 =

+3.3V?

OK

Raster, OK?

OK

Tuning, OK?

NG

NG

NG

NG

OK

Change RF cable and antenna

Change BAQ board

Change BAQ board

Check LVDS	NG
harness
connection
between BAQ
board, OK?

NG		Reconnect LVDS cable
		or change new LVDS
Change BAQ board	OK	cable

26

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-5. Video Problem

3-5-2. Video 1 Troubleshooting Flow

1) Flow Chart A

Video 1 Problem

Check Video input source	NG	Video Signal Source Problem or
signal or cable.		cable problem
OK
Check Input	NG
		Change B* board
jack ” J3005”
OK
Check LVDS harness	NG	Reconnect LVDS cable or
connection between		change new LVDS cable
B* board.

OK

Change B* board

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

27

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-5. Video Problem

3-5-2. Video 1 Troubleshooting Flow

2) Flow Chart B

				Ref1
		Check
		input	OK	Confirm waveform at		OK
	Video1	signal					IC5000 defect
				C3033 (face to IC5000)
	NG picture	1Vp-p at					(B* Board)
				same as ref 1
		FB3000
				(CB input pattern)
		(B*Board)
		NG		NG
				Confirm R3043,
						Segment	Size	B*	G*
				FB3000 & C3033
		R3302 defect						Board	Board
				connection and
		(B* Board)						Type	Type
				value
						P-2F	22	BAQ	GD1
				(B* Board)
						P-2F	26	BAQ	G9
						P-2F	32	BAQ	G9
						P-2F	40	BAQ	G10
						P-2F	46	BAQ	G11

28

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-5. Video Problem

3-5-3. Video 2/ Component Troubleshooting Flow

Component Problem

Check Video 2 /

Component Setting.

OK

Check component input source signal or cable.

OK

Check Input jack ” J3006” ( B*)

OK

Check LVDS harness connection between B* board.

OK

Change B* board

NG

NG

NG

NG

Refer to IM Video2 /

Component Setting

Component Signal Source Problem

or cable problem

Change B* board

Reconnect LVDS cable or	Segment	Size	B*	G*
			Board	Board
change new LVDS cable
			Type	Type
	P-2F	22	BAQ	GD1
	P-2F	26	BAQ	G9
	P-2F	32	BAQ	G9
	P-2F	40	BAQ	G10
	P-2F	46	BAQ	G11

29

Troubleshooting	KLV-22, 26,32 BX350, 32BX35A, 40,46 BX450
	RM-GA021

3-5. Video Problem

3-5-4. Video 2 Troubleshooting Flow

Video2 NG picture

Ref2

Check

input signal

OK Confirm waveform at

1Vp-p at

C3025 (face to IC5000)

FB3001

same as ref2

(B* Board)

(CB input pattern)

NG	NG

R3014 or R3017

Confirm FB3001 &

defect

C3025 connection and value

(B* Board)

(B* Board)

OK	IC5000 defect
	(B* Board)

Segment	Size	B*	G*
		Board	Board
		Type	Type
P-2F	22	BAQ	GD1
P-2F	26	BAQ	G9
P-2F	32	BAQ	G9
P-2F	40	BAQ	G10
P-2F	46	BAQ	G11

30