JVC InteriArt LT-26C31BC, Руководство по обслуживанию

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(No.YA169)1-15
3.1.11 REMOVING THE LCD PANEL
3.1.11.1 REMOVING THE CONTROL PWB
• Place the LCD PANEL with its backside facing upward.
Be careful not to damage the surface of the screen.
(1) Remove the 2 screws [A], and remove the CONTROL
PWB COVER.
(2) Remove the claws in the connectors [FPC RIGHT] and
[FPC LEFT], and pull out to remove the FLEXIBLE PWB.
NOTE:
Be careful not to damage the FLEXIBLE PWB.
Especially during assembly procedure, be careful not to
insert the FLEXIBLE PWB in the Panel.
(3) Remove the 2 screws [B], and remove the CONTROL
PWB.
[Confirmation after replacement]
• Confirm that voltage of 10 pin (B/L On/Off) in the connector
[CNI1] is approx.5.0V.
• Confirm that the voltage in output of the fuses [F1] and [F2]
in the connector [CNI1] is approx.5.0V.
3.1.11.2 REMOVING THE INVERTER PWB
(1) Remove the 5 screws [C], and remove the INVERTER
PWB COVER.
(2) Pull out and remove the wires from connectors [CN4]-
[CN15] (12 connectors in total).
(3) Remove the 4 screws [D], and remove the INVERTER
PWB.
[Confirmation after replacement]
• Confirm that the voltage in output of the fuses [F1] and [F2]
in the connector [CN1] and the fuses [F3] and [F4] in the
connector [CN2] is 16V.
• Confirm that the voltage in input of the TRANSFORMER in
the Inverter Board is 8V.
• Be careful about high voltage (approx. AC900V) in output.
FUSE
OUTPUT
CONTOROL PWB
INVERTER PWB
GND
GND
8V
8V
8V
8V
TRANSFORMER
OUTPUT
INPUT
CONNECTOR
A
C
D
B
CONTROL PWB COVER
INVERTER PWB COVER
CONTROL PWB
FRC
LEFT
FLEXIBLE
PWB
CNT1
FUSE
(F1, F2)
FUSE
(F1, F2)
FUSE
(F3, F4)
FRC
RIGHT
CNI1
CN1
CN2
INVERTER PWB
[CN4
㨪
CN15]
TRANSFORMER
FRONT