Zenith D60WLCD Series, Service Manual

Page: 55 / 88

TROUBLESHOOTING
D60WLCD - 923-03486
3-31
094A - SERVICING
TROUBLESHOOTING
MAIN
NO POWER
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Check the LEDs on the
Control Door.
LED Off
LED: RED
LED: Green Blink
LED: RED Blink
LED: Off LED Off
Check Stand-by
voltage. (12V at
Pin 3 of P841)
Check Stand-by voltage.
(12V at Pin 3 of P841)
Check the Vcc on
Pin 27of IC1001(5V).
LED: RED
Lamp Ballast &
Lamp Check
Check the SMPS
Board.
Check the Limit S/W
on the Lamp Case.
Check the ther-
mocouple of
P1011.
No
No
LED: RED Blink
Yes
Yes
Check Z1001 peripher-
als & I 2 C.
Check IC1002 &
peripherals.
No
Yes
Check the FAN
and Fan Driving
Voltage.
Exchange the Lamp
because the life time
of it is over.