Service manual

25
LC-30HV6U
YES
No
YES
YES
YES
No
YES
No
No
No
Noise is caused to the moving picture when
the QS drive is set to ON.
Is OSTEMP.AD on the 3rd page of the
process adjustment mode set to 255?
Is the harness connected correctly
between the Thermistor PWB and
Inverter-4 PWB?
Is the board-to-board connected
correctly between the Inverter-3 PWB
and Inverter-4 PWB?
Is the harness connected correctly
between the Monitor PWB and
Inverter-3 PWB?
Is the input voltage on pin (2) of
IC2004 (microprocessor) 5V?
TH2001 thermistor
is faulty.
Check IC4701 and
IC4901 and the peripheral
circuitry.
Connect the harness
correctly or replace it.
Connect the board-to-
board securely or replace
it.
Connect the harness
correctly or replace it.
Pin (2) of IC2004
(microprocessor) is faulty.