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KLV-40/46/52W300A (GA)     5

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.

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).

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).

µF

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pipe

KLV-40/46/52W300A (GA)     6

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.

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 .

Number of times STANDBY LED

Monitoring Items

Diagnostic Item Description

(Red) flashes

(Screen Display)

2 times

POW OVP

Main Power Over Voltage Protection

3 times

POW ERR1

Power Error

5 times

T_CON

T_CON Error

6 times

BACKLITE

Back Light Error (Panel Inverter)

7 times

TEMP ERR

Temperature Abnormal Detection

8 times

AUD PROT

Audio Abnormal Detection

9 times

FAN_ERR

FAN Error (Not Detected. Display Only)

10 times

DTT ERR

DTAU Power

13 times

BALANCER

Panel Balancer Error

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY lamp from flashing.

2 times

4 times

5 times

LED ON  0.3 sec.

LED OFF 0.3 sec.

LED OFF

3 sec. 

[ FLASH COUNT ]

Note: One flash counts is not self-diagnostic.

STANDBY 
INDICATOR

KLV-40/46/52W300A (GA)     7

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.

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

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen
After you have completed the repairs, clear the result display to “0”.

To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

5

* : Note that this differs from entering the service mode (volume +)

( Number button )

* 

( Volume )

( TV standby )

( Info )

SELF CHECK

002
003
005

006
007
008
009

010
013

POW OVP
POW ERR1
T_CON

BACKLITE
TEMP ERR
AUD PROT
FAN_ERR

DTT ERR
BALANCER

0000000000
0000000000
0000000000

0000000000
0000000000
0000000000
0000000000

0000000000
0000000000

0000000000
0000000000
0000000000

0000000000
0000000000
0000000000
0000000000

0000000000
0000000000

0000000000
0000000000
0000000000

0000000000
0000000000
0000000000
0000000000

0000000000
0000000000

00
00
00

00
00
00
00

00
00

Monitoring Items

For details, refer to "1-1. DIAGNOSTIC TEST INDICATORS"

[ SELF-DIAGNOSTIC SCREEN DISPLAY ]

Number of times STANDBY Indicator flashes

KLV-40/46/52W300A (GA)     8

1-1. KLV-40W300A ...................................................... 1-1

1-1-1.

REAR COVER ASSY REMOVAL ................ 1-1

1-1-2.

STAND ASSY AND ARM ASSY

REMOVAL ...................................................... 1-1

1-1-3.

MULTI BUTTON ASSY AND HW1 BOARD

REMOVAL ...................................................... 1-2

1-1-4.

HW2 BOARD REMOVAL ............................. 1-2

1-1-5.

DF1 BOARD AND GF1 BOARD

REMOVAL ...................................................... 1-3

1-1-6.

FB TOP SHIELD ASSY REMOVAL ............. 1-3

1-1-7.

AG BOARD AND FB2 BOARD

REMOVAL ...................................................... 1-4

1-1-8.

TUG BOARD REMOVAL .............................. 1-4

1-1-9.

AC INLET, CHASSIS BRACKET AND STAY

REMOVAL ...................................................... 1-5

1-1-10. LOUD SPEAKER REMOVAL ....................... 1-5

1-1-11. LCD PANEL, HW3 BOARD AND BEZEL

ASSY REMOVAL ........................................... 1-6

1-2. KLV-46W300A ...................................................... 1-7

1-2-1.

REAR COVER ASSY REMOVAL ................ 1-7

1-2-2.

STAND ASSY AND ARM ASSY

REMOVAL ...................................................... 1-7

1-2-3.

MULTI BUTTON ASSY AND HW1 BOARD

REMOVAL ...................................................... 1-8

1-2-4.

HW2 BOARD REMOVAL ............................. 1-8

1-2-5.

DF2, DF3 AND GF1 BOARDS

REMOVAL ...................................................... 1-9

1-2-6.

FB TOP SHIELD ASSY REMOVAL ............. 1-9

1-2-7.

AG AND FB2 BOARDS REMOVAL .......... 1-10

1-2-8.

TUG BOARD REMOVAL ............................ 1-10

1-2-9.

AC INLET, CHASSIS BRACKET AND STAY

REMOVAL .................................................... 1-11

1-2-10. LOUD SPEAKER REMOVAL ..................... 1-11

1-2-11. LCD PANEL, HW3 BOARD AND BEZEL

ASSY REMOVAL ......................................... 1-12

1-3. KLV-52W300A .................................................... 1-13

1-3-1.

REAR COVER ASSY REMOVAL .............. 1-13

1-3-2.

STAND ASSY AND ARM ASSY

REMOVAL .................................................... 1-13

1-3-3.

MULTI BUTTON ASSY AND HW1 BOARD

REMOVAL .................................................... 1-14

1-3-4.

HW2 BOARD REMOVAL ........................... 1-14

1-3-5.

DF4, DF5 AND GF2 BOARDS

REMOVAL .................................................... 1-15

1-3-6.

FB TOP SHIELD ASSY REMOVAL ........... 1-15

1-3-7.

AG AND FB2 BOARDS REMOVAL .......... 1-16

1-3-8.

TUG BOARD REMOVAL ............................ 1-16

1-3-9.

AC INLET, CHASSIS BRACKET AND STAY

REMOVAL .................................................... 1-17

1-3-10. LOUD SPEAKER ASSY REMOVAL ......... 1-17

1-3-11. LCD PANEL, HW3 BOARD AND BEZEL

ASSY REMOVAL ......................................... 1-18

2-1. Go to TV standby condition. .................................. 2-1

2-2. Entering Service Mode ........................................... 2-1

2-3. Change Setting Data for TV ................................... 2-2

2-4. Write data for TVM ................................................ 2-3

2-5. Entering BEM service menu .................................. 2-4

2-6. Change Setting Data for BEM ............................... 2-5

2-7. Write data for BEM ................................................ 2-6

2-8. KLV-40/46/52W300A Model ................................ 2-7

2-9. How to change shipping condition. ....................... 2-8

3-1. No Power (Flow Chart_B) ..................................... 3-2

3-2. Set Reboots ............................................................. 3-3

3-3. SELF DIAGNOSIS ................................................ 3-4

3-3-1.

Flow Chart_C ................................................... 3-5

3-3-2.

POWER OVP (RED 2 Times blink) ............... 3-6

3-3-3.

POWER ERROR (RED 3 Times blink) .......... 3-6

3-3-4.

T-CON ERROR (RED 5 Times blink) ............ 3-7

3-3-5.

BACK LIGHT ERROR (RED 6 Times blink) 3-7

3-3-6.

TEMP ERROR (RED 7 Times blink) ............. 3-8

3-3-7.

AUDIO ERROR (RED 8 Times blink) ........... 3-8

3-3-8.

DTAU ERROR (RED 10 Times blink) ........... 3-9

3-3-9.

BALANCER ERROR (RED 13 Times blink) 3-10

3-4. COMMUNICATION ERROR ............................. 3-11

3-5. AUDIO PROBLEM (Flow Chart_D) .................. 3-12

3-6. VIDEO PROBLEM (Flow Chart_E) ................... 3-13

4-1.

CIRCUIT BOARDS LOCATION ................... 4-1

(1)

KLV-40/46W300A .......................................... 4-1

(2)

KLV-52W300A ................................................ 4-1