VRX775VD
VRX776VD
- 13 -
All display not appear
Check
the panel section
OK
OK
NG
Check
the slide mechanism
Dcfective of IC501
Defective of IC802
and Neighboring parts
( LCD PWB section)
Defective of
slide mechanism,
IC501(position
detection IC)
NG
Check
the
power supply line
of LCD
OK
OK
Check
the power supply line
IC701 of LCD-PWB
NG
Malfuntion of
the power supply 5V
(Sub PWB section)
No composite video output
Malfuntion of
the power of LCD
(Sub PWB section)
NG
Confirm
the panel section
OK
OK
NG
Check
the visual output of
P201
Defective of
IC302, IC303
Defective of IC802
and Neighboring parts
( LCD PWB section)
Confirm a destination
of the image output
NG
No NAVI-RGB video output signal
Check
the RGB input of
IC457
OK
OK
NG
Check
the RGB output of
IC457
Defective of IC802
Defective of connection
of NAVI-RGB cord,
Confirm the terminator
R478 - 481
Defective of IC457
NG
No turn on LCD back light
Check
the panel section
OK
OK
NG
Confirm
open position
of slide mechanism
Defective of IC501
Defective of
F701, IC944, LCD
Malfuntion of
slide mechanism,
Calibration of horizontally
position,
Confirm IC501
NG
Check
the output of
Q305
OK
Defective of Q305
NG
Display section
No display RGB image
Confirm
the composite image
OK
OK
NG
Confirm
REM3.3V circuit line
Defective IC802
Defective IC802
Malfuntion of
REM3.3V circuit line
NG
Confirm
REM5V circuit line
OK
OK
Confirm
RGB output of
IC401
NG
Defective IC401
Defective IC457
NG
Confirm
the output of
IC457
OK
Malfuntion of
REM5V circuit line
NG
No Lighting LED
Confirm
power supply of
B/U
OK
NG
Operating of
Q1101
Defective LED
Malfuntion of connection
of power connector(J601),
Fuse of B/U circuit lline
(F601)
Defective Q1101
NG
OK
