Read Sharp VC-M23HM (serv.man13) Technical Bulletin online
Sharp Electronics (UK) Limited CE Technical Support Group
Originator
$Y:
$Y:
Supervisor
Approval Date / / Reference TB-T9705020
White - Carry out as required Yellow - Carry out as required and whenever unit comes in for service Red - Carry out on all units
VCR970802
Month of Issue :
August 1997
Classification :
White
VIDEO TECHNICAL BULLETIN
Page 1 of 1
MODELS
VCM20HM
VCM21HM
VCM23HM
VCM24HM
VCM25HM
VCHM60HM
VCMH64HM
VCM201HM
VCM202HM
SYMPTOM After replacing the EEPROM, a noisy playback picture may be experienced.
CAUSE
Corruption of data within the EEPROM.
ACTION
After setting the JP numbers and closing the test mode, turn off the mains
supply to the VCR. Enough time should be allowed for the the back-up capacitor
to discharge.
supply to the VCR. Enough time should be allowed for the the back-up capacitor
to discharge.
When the VCR is powered up again, the microprocessor will read the newly stored
hexadecimal codes from the EEPROM and the unit will perform correctly.
hexadecimal codes from the EEPROM and the unit will perform correctly.
Display