Sharp LC-R60HDU Service Manual page 45

TROUBLE SHOOTING TABLE
Checking power supply
NO
Is power LED (red) on?
YES
NO
Is there 5V(TPOW) output
signal at pin (3) of ED?
YES
NO
Is there 17V output signal at
pin (2) of EA?
YES
NO
Is there 13V output signal at
pin (5) of EA?
YES
NO
Is there 6V output signal at
pin (8) of EA?
YES
NO
Is there 4.5V output signal
at pin (11) of EA?
YES
NO
Is there 16V output signal at
pin (1) of ES?
YES
Cable defective.
NO
Is there 7V output signal at
pin (1) of ED?
YES
Check IC2003, Q2001 and
their peripheral circuits.
Check R7221, IC7101 and
their peripheral circuits.
Check R7220 and its
peripheral circuits.
Check R7223 and its
peripheral circuits.
Check IC7203 and its
peripheral circuits.
Check R7222 and its
peripheral circuits.
45
(Continued)
Check IC7101, F7001, F7003
and their peripheral circuits.
LC-R60HDU