Fault flow chart 2.3
Fault symptom:
Cannot switch to standby
Possible causes:
Remote Control
PCB14, Main
PCB04, Power Supply
Check remote
control
Replace remote
control
Confirm voltage on
PCB14, Main J1
pin 13 (PWRON)
after pressing
STANDBY on the
remote control = 0V
(low)
OK?
Replace PCB14,
Main
Confirm voltage on
PCB14, Main J1
pin 1 = 0V
OK?
Replace PCB04,
Power Supply
Fault symptom:
Autocontrast does not work
Possible causes:
PCB11, IR Receiver
PCB12, Filter
PCB14, Main
Check connection
between PCB11, IR
Receiver and PCB14,
Main.
OK?
Replace PCB14,
Main
Replace PCB11, IR
Receiver
Check that Light
Sense is ON in the
Service Menu under
Auto Picture
Control. (See
Service Menu)
Check Light Sensor
Read Out in the
Service Menu under
Auto Picture Control
while holding a
hand over the light
sensor (IR Receiver)
the light read-out
must go to zero.
OK?
Check voltage on
PCB04 CN202
pin 12.
No light = 0V
Bright light = 3.3V
OK?
Check cable
connection
between PCB04,
Power Supply,
PCB12 Filter and
LCD panel
No
Yes
Replace LCD panel
Summary of Contents for BeoVision 10-40
Page 22: ...2 16 2 16 2 16...
