JVC LT-26D50BJ, LT-26D50SJ Service Manual

SERVICE MANUAL

LCD INTEGRATED DIGITAL TV

YA205B20054

BASIC CHASSIS

LT-26D50BJ,
LT-26D50SJ

Supplementary

Please be informed that this service manual contains the related matters following the parts replacement in
the LCD PANEL UNIT.
For details other than those described in this manual, please refer to the LT-26D50BJ and LT-26D50SJ
service manual (No.YA205, 2004/12).

FL

SECTION 1

PRECAUTION

Please refer to "LT-26D50BJ and LT-26D50SJ (No.YA205)" about this section.

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

Please refer to "LT-26D50BJ and LT-26D50SJ (No.YA205)" about this section.

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.YA205B

2005/4

SECTION 3

DISASSEMBLY

CAUTION AT DISASSEMBLY:

• Make sure that the power cord is disconnected from the outlet.

• Pay special attention not to break or damage the parts.

• When removing each board, remove the connectors as required. Taking notes of the connecting points (connector numbers)
makes service procedure manageable.

• During the procedure, place a mirror mat etc. under the LCD UNIT and be careful not to damage the PANEL.

• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.

3.1 DISASSEMBLY PROCEDURE

3.1.1 CAUTION ON REMOVING THE LCD PANEL UNIT

The LCD PANEL is fixed to the FRONT PANEL (at the back side)
by using double-side adhesive tapes. To remove the LCD
PANEL UNIT, remove the adhesive tape on the FRONT PANEL
slowly.

LCD PANEL UNIT

Double-side adhesive tapes

Double-side adhesive tapes

3.1.3 REMOVING THE INVERTER PWB (Fig.1)

• Remove the STAND.

• Remove the REAR COVER.

• Remove the LCD PANEL UNIT.
(1) Remove the 4 screws [B], then remove the INVERTER

PWB COVER.

(2) Remove the INVERTER PWB.

3.1.4 REMOVING THE BACK LIGHT UINT (Fig.1)

CAUTION:

When replacing the BACK LIGHT UINT, be careful to
prevent dust attachment to the UNIT. If dust particles
attached to the UNIT, it becomes the cause of uneven
brightness.

• Remove the STAND.

• Remove the REAR COVER.

• Remove the LCD PANEL UNIT.

• Remove the CONTROL PWB.

• Remove the INVERTER PWB.
(1) Remove the 6 screws [C], then remove the TOP PANEL

FRAME.

(2) Remove the LCD PANEL.

CAUTION:

When removing the LCD PANEL, be careful not to give
stress to the FPC which connects the PWB and the LCD
PANEL.

FRONT PANEL

3.1.2 REMOVING THE CONTROL PWB (Fig.1)

• Remove the STAND.

• Remove the REAR COVER.

• Remove the LCD PANEL UNIT.
(1) Remove the 4 screws [A], then remove the CONTROL

PWB COVER.

(2) Remove the CONTROL PWB.

CAUTION:

Carry out the procedure with extra care as the FERRITE
CORE is affixed with double-side adhesive tapes and it may
break if extra force is applied.

1-2 (No.YA205B)

CAUTION ON EXCHAGING THE BACK LIGHT UINT

• If the screws that are not specified in this section are
removed, the LCD PANEL will be removed and it cannot be
reassembled.