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KLV-40ZX1 (CH)     9

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 clear the result display to “0”, press button on the remote commander sequentially as shown below when the diagnostic screen is being

displayed.

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 +)

Total Operation Time
Boot Count
Panel Operation Time
Power Off-On Count

0
0
0
0

[ SCREEN DISPLAY ]

KLV-40ZX1 (CH)     10

1-1.

LDM-Z401A (MONITOR) .................................... 1-1

1-1-1.

TERMINAL COVER REMOVAL ................. 1-1

1-1-2.

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

1-1-3.

IF1C, H1L, H3L AND H4L BOARDS

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

1-1-4.

B AND HSL BOARDS, AC INLET

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

1-1-5.

GS1 AND LD1 BOARDS REMOVAL .......... 1-3

1-2.

MBT-W1A (MEDIA RECEIVER) ........................ 1-4

1-2-1.

CABINET UPPER REMOVAL ...................... 1-4

1-2-2.

BEZEL ASSY AND PWB BRACKET

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

1-2-3.

HK1 BOARD REMOVAL .............................. 1-4

1-2-4.

HK2 BOARD REMOVAL .............................. 1-4

1-2-5.

HI3 BOARD REMOVAL ................................ 1-5

1-2-6.

LAF1 BOARD REMOVAL ............................ 1-5

1-2-7.

LFA2 BOARD REMOVAL ............................ 1-5

1-2-8.

UPPER BEAM AND LF BLOCK (LFTX)

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

1-2-9.

REMOTE CONTROL RF MODULE AND

STAY REMOVAL ........................................... 1-6

1-2-10. DB1C BOARD REMOVAL ............................ 1-6

1-2-11. REAR PANEL AND H1C BOARD

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

1-2-12. BC BOARD REMOVAL ................................. 1-7

1-2-13. MAIN CHASSIS AND LOWER CABINET

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

1-3.

STAND ................................................................... 1-8

1-3-1.

BASE STAND REMOVAL ............................ 1-8

1-3-2.

ARM STAND REMOVAL ............................. 1-8

2-1.

MONITOR (LDM-Z401A) .................................... 2-1

2-1-1.

FLOW CHART ................................................ 2-1

2-1-2.

NO POWER ..................................................... 2-2

2-1-3.

STANDBY LED BLINK ................................. 2-2

1)

2 times Blinkings ............................................. 2-2

2)

3 times Blinkings ............................................. 2-2

3)

6 times Blinkings ............................................. 2-3

4)

7 times Blinkings ............................................. 2-3

5)

8 times Blinkings ............................................. 2-3

6)

11 times Blinkings ........................................... 2-4

7)

12 times Blinkings ........................................... 2-4

8)

14 times Blinkings ........................................... 2-4

9)

16 times Blinkings ........................................... 2-5

10)

17 times Blinkings ........................................... 2-5

2-1-4.

NO PICTURE .................................................. 2-6

2-1-5.

NO SOUND ..................................................... 2-6

2-1-6.

TV AND COMMANDER BUTTONS

MALFUNCTION ............................................. 2-7

1)

TV button malfunction ..................................... 2-7

2)

IR remote commander button malfunction ..... 2-7

3)

RF Remote Commander Button Malfunction . 2-8

2-2.

MEDIA RECEIVER (MBT-W1A) ........................ 2-9

2-2-1.

FLOW CHART ................................................ 2-9

2-2-2.

NO POWER ................................................... 2-10

2-2-3.

STANDBY LED BLINK ............................... 2-10

1)

2 times Blinkings ........................................... 2-10

2)

10 times Blinkings ......................................... 2-10

3)

16 times Blinkings ......................................... 2-11

4)

17 times Blinkings ......................................... 2-11

2-2-4.

NO LINK ........................................................ 2-12

2-2-5.

NO PICTURE, NO SOUND .......................... 2-13

1)

TUNER INPUT .............................................. 2-13

2)

VIDEO OR COMPONENT INPUT .............. 2-14

3)

HDMI INPUT ................................................ 2-15

2-2-6.

REMOTE COMMANDER BUTTONS

MALFUNCTION ........................................... 2-16

3-1.

BLOCK DIAGRAM .............................................. 3-1

1)

LDM-Z401A (MONITOR) .............................. 3-1

2)

MBT-W1A (MEDIA RECEIVER) ................. 3-2

3-2.

CIRCUIT BOARDS LOCATION ......................... 3-3

1)

LDM-Z401A (MONITOR) .............................. 3-3

2)

MBT-W1A (MEDIA RECEIVER) ................. 3-3

4-1.

LDM-Z401A (MONITOR) .................................... 4-2

4-1-1.

REAR COVER ................................................. 4-2

4-1-2.

CHASSIS-1 ...................................................... 4-3

4-1-3.

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

4-1-4.

CONNECTOR ASSY ...................................... 4-5

4-2.

MBT-W1A (MEDIA RECEIVER) ........................ 4-6

4-2-1.

BEZEL .............................................................. 4-6

4-2-2.

CHASSIS ......................................................... 4-7

4-3.

STAND ASSY ........................................................ 4-8

4-4.

PACKING MATERIALS ...................................... 4-9

KLV-40ZX1 (CH)     1-1

Note: 1. Be aware that this model does not have a “

⇒” mark engraved on the screw tightening place on the rear cover as

previous models.

2. When removing the rear cover from the panel module, slide the rear cover toward the upper side as shown below.

3

 Stand assy

2

 Two screws

    (+B 5X8)

1

 Terminal cover

2

 Two screws

    (+B 5X8)

2

 One screws

   (M3X6)

5

 Two screws

   (ORNAMENTAL M6X8)

6

 Two screws

   (+PSW M3X8)

5

 Two screws

   (ORNAMENTAL M6X8)

4

 One screw

    (M3X6)

 

8

 Panel module

7

 Rear cover

3

 Screw cap

1

 Screw cap

KLV-40ZX1 (CH)     1-2

1

 Five screws

    (M3X6)

8

 Four screws

   (M3X6)

0

 Two screws

    (M3X6)

qj

 One screw

    (+BVTP 3X10)

2

 IF1C board

6

 Bottom cover (L)

qa

 Bottom cover (R)

ql

 H4L board

qh

 H3L board

qd

 H1L board

qk

 Light guide

qf

 Control button

qg

 One screw

 (+BVTP 3X10)

qs

 Two screws

     (+BVTP 3X10)

3

 LF4A board

4

 LF3A board

9

 LF block

    (LFRX)

7

 ECS cover

5

 Two screws

    (M3X6)

qg

 Three screws

    (M3X6)

qs

 Two screws

    (+BVTP 3X10)

1

 Eight screws

    (+PSW M3X8)

8

 Three screws

    (+PSW M3X5)

5

 B board

0

 Shield case (HS)

qa

 HSL board

2

 Heat sink (B) assy

qd

 PA MXJ connector 

    assy 6P

qh

 Bottom cover (C)

9

 Two screws

     (M2/FLAT HEAD)

qf

 AC inlet

qk

 Model name sheet (L)

qj

 Model name sheet (R)

ql

 HDMI label

6

 Thermal sheet (BT)

7

 Thermal sheet (CT)

3

 Lead wire with 

    connector

 

ql

One screw

    (M3X6)

w;

 Remote control RF module

4

 Lead wire with 

    connector

Note: When replacing the LF block (LFRX), please replace the LF block (LFTX) of the media receiver at the same time.

LFRX and LFTX are bundled in the repair part (P/N: A-1729-496-B).