31
MAIN UNIT:
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
Check TU_VCC is applied to Tuner or not?
Is the DIF signal output from pin (8) and pin (9) of
TUNER(TU7001)?
Is the DIF signal sent to pin (AD19) and
pin (AE19) of IC U107?
Refer to “The picture doesn't appear in all modes.”
Check each power IC and peripheral
components are correct or not.
Check the tuner and its peripheral circuits.
Replace as required.
Check circuit between TU7001 and IC
U107, then check the peripheral circuits of
IC U107.
NO
NO
YES
YES
YES
NO
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