Sharp VC-MH69HM (serv.man17) Service Manual / Technical Bulletin ▷ View online
VCR2000 06 01
Month of Issue:
VIDEO TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
White Carry out as required
Yellow Carry out as required and whenever the unit comes in for service
Red Carry out on all units
SYMPTOM Various faults:
Will not come out of standby
EEPROM can not be programmed correctly
Erratic or intermittent functions
Will not respond to the remote control
Will not respond to the front panel buttons
Erratic or intermittent timer programming operations
Microprocessor program crash.
All of the models listed above utilise a back-up power facility that maintains the
memory inside the main processor in case of a mains power failure. If the mains
failure is of reasonable short duration, then all original settings are retained and the
unit will continue to function as before the mains interruption (including the retention of
any corrupted data).
Discharge back-up capacitor connected to the supply pins of the processor.