Sony KLV-22BX205 User manual

CEF85B75C8FE03FE27E5B2DD5FD4FC586E1158C26A977376619C854F45DFDC1CD6D620D8336B9157

AZ1-FM CHASSIS

Segment: 5-3

SERVICE MANUAL

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

ORIGINAL MANUAL ISSUE DATE: 12/2009

Version Date Subject

1.0 12/2009 No revisions or updates are applicable at this time.

1.1 4/2010 Correction part number of A board for KLV-26BX200/205. (P.10)

1.2 7/2010 Correction part number of SWITCH UNIT. (P.10, P.13)

1.3 8/2010 Addition of new models (KLV-22BX205/KLV-37BX205)

LCD Digital Color TV

9-888-267-04

CEF85B75C8FE03FE27E5B2DD5FD4FC586E1158C26A977376619C854F45DFDC1CD6D620D8336B9157

SERVICE MANUAL

LCD Digital Color TV

AZ1-FM CHASSIS

Segment: 5-3

9-888-267-04

CEF85B75C8FE03FE27E5B2DD5FD4FC586E1158C26A977376619C854F45DFDC1CD6D620D8336B9157

KLV-22/26/32/37BX200,205(CH) 3

MODEL LIST

MODEL COLOR COMMANDER DEST.MODEL COLOR COMMANDER DEST.

KLV-22BX205 Black RM-SA020 China

KLV-26BX200 Brown RM-SA020 China

KLV-26BX205 Black RM-SA020 China

KLV-32BX200 Brown RM-SA020 China

KLV-32BX205 Black RM-SA020 China

KLV-37BX205 Black RM-SA020 China

CEF85B75C8FE03FE27E5B2DD5FD4FC586E1158C26A977376619C854F45DFDC1CD6D620D8336B9157

KLV-22/26/32/37BX200,205(CH) 4

WARNINGS AND CAUTIONS -ENGLISH

CAUTION

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

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.

WARNING!!

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.

CARRYING THE TV

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.

SAFETY-RELATED COMPONENT WARNING!!

Components identified by shading and ! mark on the schematic diagrams, 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.

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KLV-22/26/32/37BX200,205(CH) 5

WARNINGS AND CAUTIONS

USE CAUTION WHEN HANDLING THE LCD PANEL

When repairing the LCD panel, be sure you are grounded by using a wrist band.

When repairing the LCD panel on the wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.

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

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

3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.

4) Do not expose the LCD panel to direct sunlight.

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

6) Disconnect the AC power when replacing the backlight (CCFL) or inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms.)

7) Always clean the LCD panel with a soft cloth material.

8) Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.

9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).

10) It is recommended not to exceed 1 hour of Power-On nor Burn-in period with LCD panel face down condition, in repair activity.

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KLV-22/26/32/37BX200,205(CH) 6

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 touching high-wattage

resistors.

3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been

replaced. Be absolutely certain that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly transistors, that were installed during a

previous repair. Point them out to the customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out

to the customer and recommend their replacement.

6. Check the line cords for cracks and abrasion. Recommend the replacement of any such line

cord to the customer.

7. Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed

metal parts for AC leakage. Check leakage as described below.

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

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KLV-22/26/32/37BX200,205(CH) 7

SAFETY CHECK-OUT

Leakage Test

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

any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes).

Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the

manufacturers’ instructions to use these 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 0.75 V, 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 battery-operated digital multimeters that have a 2 VAC range are suitable (see

Figure A).

How to Find a Good Earth Ground

A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet

boxes is also at earth ground.

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.

If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (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 B).

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KLV-22/26/32/37BX200,205(CH) 8

SELF DIAGNOSIS FUNCTION

DIAGNOSTIC TEST INDICATORS

When an error occurs, the STANDBY LED will flash a set number

of times to indicate the possible cause of the problem.

If there is more than one error, the LED will identify the first of the

problem areas.

Result for all of the following diagnostic items are displayed on

screen.

If the screen displays a “0”, no error has occurred .

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to flash.

The number of times the LED flashes translates to a probable source of the problem.

A definition of the STANDBY LED flash indicators is listed in the instruction manual for the user’s knowledge and reference.

If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past

problems and how often these problems occur.

STBY LED

Fla s h tim e

Service menu Item name

(Screeen Dsisplay) Diagnostic Item Description

6Inverter_ERR

When The connection to the Inverter board

is not proper, or the inverter board has

something wrong.("Inverter_ERR")

8AUPROT

When the connections of the speaker has

DC level difference("AU PROT") Or Main

Amp has the Over Current or High

temperature status ("Amp_ERR").

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KLV-22/26/32/37BX200,205(CH) 9

SELF DIAGNOSIS FUNCTION

DISPLAY OF STANDBY LED FLASH COUNT

SELF-DIAGNOSTIC SCREEN DISPLAY

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up

past occurrences of failure for confirmation on the screen:

[To Bring Up Screen Test]

In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

Exiting the Self-diagnostic screen

To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button or MENU button on the remote or the POWER

button on

the TV.

CEF85B75C8FE03FE27E5B2DD5FD4FC586E1158C26A977376619C854F45DFDC1CD6D620D8336B9157

KLV-22/26/32/37BX200,205(CH) 10

SEC 1. DISASSEMBLY AND PART LIST

1-1. KLV-26BX200/205

1-1-1. STAND ASSY AND REAR COVER ASSY

1-1-2. G BOARD AND B BOARD

REAR COVER ASSY

STAND ASSY

MOUNTED PWB G

SIDE JACK BRACKET

MOUNTED PWB A

SWITCH UNIT

CORD, POWER

(WITH CONNECTOR)

UNDER COVER

PART No. DESCRIPTION MARK

X-2547-066-1 REAR COVER ASSY (26) 012-000A-3143

4-178-094-01 BRACKET VESA (M4) 024-0001-4448

X-2345-301-2 STAND ASSY (M1G) -

1-857-609-11 MOUNTED PWB G 880100800-065-G

4-178-090-01 BRACKET SIDE JACK 012-000A-3133

1-837-709-21 CORD, POWER (WITH CONNECTOR) 073-0101-7797

1-857-608-21 MOUNTED PWB A 01-26T91001-00

4-178-074-01 COVER, UNDER 012-0001-3132

1-489-339-11 SWITCH UNIT 03-26T91002-01

4-132-178-01 COVER, STAND (26) -

BRACKET VESA

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