JVC LT-32X575 Service Manual page 128

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
3.1.2 REMOVING THE CONTROL PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the LCD PANEL UNIT.
(1) Remove the 2 screws [A], then remove the CONTROL
PWB COVER.
(2) Disconnect the connector [CN1] / [CN2] / [CN4] / [CN5]
from the CONTROL PWB .
(3) Remove the 2 screws [B], then remove the CONTROL
PWB.
1-2 (No.YA180B)
SECTION 3
DISASSEMBLY
Double-side adhesive tapes
FRONT PANEL
3.1.3 REMOVING THE INVERTER PWB (Fig.1)
• Remove the STAND.
• Remove the REAR COVER.
• Remove the LCD PANEL UNIT.
(1) Remove the 3 screws [C], then remove the INVERTER
PWB COVER.
(2) Disconnect the connector [CN5] / [CN6] / [CN12] / [CN13] /
[CN14] / [CN15] from the TOP INVERTER PWB (HOT
SIDE).
(3) Disconnect the connector [CN3] / [CN4] / [CN8] / [CN9] /
[CN10] / [CN11] from the BOTTOM INVERTER PWB
(HOT SIDE).
(4) Remove the 4 screws [D], then remove the TOP
INVERTER PWB and BOTTOM INVERTER PWB (HOT
SIDE).
(5) Remove the 6 screws [E], then remove the INVERTER
PWB (GND SIDE).
(6) Disconnect the connector [CN7] / [CN16] / [CN17] / [CN18]
/ [CN19] / [CN20] / [CN21] / [CN22] / [CN23] from the
INVERTER PWB (GND SIDE).
3.1.4 REMOVING THE LAMP UINT (Fig.1)
< SYMPTOMS OF DEFECTED LUMP UNIT >
When one of the LAMP UNIT pair (2 LAMPS) die and the
power is supplied, the screen image appears just for a second
then disappears.
• Remove the STAND.
• Remove the REAR COVER.
• Remove the LCD PANEL UNIT.
• Remove the CONTROL PWB.
(1) Remove the FERRITE CORE.
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.
(2) Remove the 4 screws [F], the 4 screws [G] , the 4 screws
[H] and the 4 screws [J], then remove the PANEL FRAME.
(3) Remove the 6 screws [K], then remove the LAMP
HOLDER.
(4) Remove the LAMP CLIP, then remove the LAMP UINT.
CAUTION ON EXCHAGING THE LAMP UINT
• LAMP UINT is supplied as a pair. After a long period of use,
exchanging only died LAMP may cause the uneven
brightness on the screen as the exchanged LAMP is the
brightest of all. Change all 7 pairs of the LAMP UINT when
exchange is required.
• If the screws that are not specified in this section are
removed, the LCD PANEL will be removed and it cannot be
reassembled.