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KLV-32/40D300A, 32/40/46V300A (WB)     4

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-32/40D300A, 32/40/46V300A (WB)     5

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 STANDY LED

Monitoring Items

Diagnostic Item Description

(Red) flashes

(Screen Display)

2 times

DC_DET

Main power supply voltage error (12V, etc)

3 times

DC_ALERT1

Malfunction of 3.3V line (Trident circuit, etc)

4 times

DC_ALERT2

Malfunction of 5V line
(Voltage Supply to FE, etc)

5 times

DC_ALERT3

Malfunction of power supply for screen

6 times

BACKLIGHT

Malfunction of inverter or overcurrent, etc

7 times

 *2

TEMPERATURE

Abnormal temperature inside unit

8 times

AUDIO

Audio circuit error (amplifier, etc.)

9 times (unused)

–

(unused)

10 times

DEF

Digital FE circuit error

11 times

B-ENGINE

Malfunction of Trident IC or around IC

12 times

HFR

BH board error

 *1

13 times

(No item on screen display)

Malfunction of balancer

*1: When safety shutdown occurs because of FRC ACK, 1.5V line, 2.5V/3.3V line, or Panel 12V malfunction, BH board is considered

to be abnormal.

*2: If abnormal temperature of BH board occurs, STANDY LED (Red) flashes is same as abnormal temperature inside unit, the error is

differentiated by shot unit down or not. When the unit shut down, abnormal temperature inside unit occurs.

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.

STANDBY LED

LIGHT SENSOR

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.

KLV-32/40D300A, 32/40/46V300A (WB)     6

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.

Channel 5

Volume

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

AUDIO FAN *1

Monitoring Items

Error Count Record

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

[ SELF-DIAGNOSTIC SCREEN DISPLAY ]

Number "0": means that no fault detected.
Number "1": means a fault was detected one time only.

*1 : KLV-32/40D300A Model only

KLV-32/40D300A, 32/40/46V300A (WB)     7

1-1. KLV-32D300A/32V300A ...................................... 1-1

1-1-1.

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

1-1-2.

STAND ASSY AND VESA ARM ASSY

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

1-1-3.

H1 BOARD REMOVAL ................................. 1-2

1-1-4.

U1 AND U2 BOARDS AND SIDE

TERMINAL ..................................................... 1-2

1-1-5.

POWER UNIT REMOVAL ............................ 1-3

1-1-6.

DTT (TOP) SHIELD REMOVAL .................. 1-3

1-1-7.

BG1/UT BOARD REMOVAL ........................ 1-4

1-1-8.

BH BOARD REMOVAL (KLV-32D300A) ... 1-4

1-1-9.

UNDER COVER REMOVAL ........................ 1-5

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

1-1-11. LCD PANEL REMOVAL ............................... 1-6

1-2. KLV-40D300A, 40/46V300A ............................... 1-7

1-2-1.

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

1-2-2.

STAND ASSY AND VESA ARM ASSY

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

1-2-3.

H1 BOARD REMOVAL ................................. 1-8

1-2-4.

U1 AND U2 BOARDS AND SIDE

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

1-2-5.

G3 AND D1 BOARDS REMOVAL ............... 1-9

1-2-6.

DTT (TOP) SHIELD REMOVAL .................. 1-9

1-2-7.

BG1/UT BOARD REMOVAL ...................... 1-10

1-2-8.

BH BOARD REMOVAL (KLV-40D300A) . 1-10

1-2-9.

AC INLET AND UNDER COVER

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

1-2-10. LCD BKT BTM L/R ASSY .......................... 1-11

1-2-11. SPEAKER REMOVAL ................................. 1-12

1-2-12. H3 AND H4 BOARDS REMOVAL ............. 1-12

1-2-13. D2 BOARD REMOVAL ............................... 1-13

1-2-14. LCD PANEL AND BEZEL ASSY

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

2-1. CIRCUIT BOARDS LOCATION ......................... 2-1

(1)

KLV-32D300A, 32V300A .............................. 2-1

(2)

KLV-40D300A, 40/46V300A ......................... 2-1

3-1. KLV-32D300A/32V300A ...................................... 3-2

3-1-1.

REAR COVER AND STAND ASSY ............. 3-2

3-1-2.

CHASSIS-1 ...................................................... 3-3

3-1-3.

CHASSIS-2 ...................................................... 3-4

3-1-4.

CHASSIS-3 ...................................................... 3-5

3-1-5.

SPEAKER ........................................................ 3-6

3-1-6.

BEZEL ASSY AND LCD PANEL ................. 3-7

3-2. KLV-40D300A, 40/46V300A ............................... 3-8

3-2-1.

REAR COVER AND STAND ASSY ............. 3-8

3-2-2.

CHASSIS-1 ...................................................... 3-9

3-2-3.

CHASSIS-2 .................................................... 3-10

3-2-4.

CHASSIS-3 .................................................... 3-11

3-2-5.

SPEAKER ...................................................... 3-12

3-2-6.

BEZEL ASSY AND LCD PANEL ............... 3-13

3-3. PACKING MATERIALS

(KLV-32D300A/32V300A) ................................. 3-14

3-4. PACKING MATERIALS

(KLV-40D300A/40V300A) ................................. 3-15

3-5. PACKING MATERIALS (KLV-46V300A) ....... 3-16