Display Section - Clarion VRX775VD Service Manual

Display section

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