Read Sharp 32LW-92H (serv.man7) Technical Bulletin online
CTV 2005 04 02
Date of Issue: 6
th
April 2005
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
Reference - JR 06 04 2005 - 2
Revision - 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
MODELS
28LF92H
28LW92H
32LF92H
32LW92H
SYMPTOM Geometry problems. This can take the form of any of the symptoms below:
•
Picture too large
•
Picture too small
•
No geometry adjustment
•
Picture distortion
•
Picture bowed
CAUSE
NVM corruption
ACTION
It is preferable to re-program the NVM (IC502) with the data available on the Sharp
Technical Website. If this is not possible, use the part numbers given below for a pre-
programmed IC.
Technical Website. If this is not possible, use the part numbers given below for a pre-
programmed IC.
Sometimes the NVM may have failed and it is not possible to write to the device. If
this is the case either order a pre-programmed or blank NVM.
this is the case either order a pre-programmed or blank NVM.
Note
If re-programming or replacing the NVM does not cure the fault, then there will be a
fault with the east/west control circuitry. If this is the case, please fault find
accordingly.
If re-programming or replacing the NVM does not cure the fault, then there will be a
fault with the east/west control circuitry. If this is the case, please fault find
accordingly.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC502
28LF92H NVM (Thomson CRT)
V20144774
AF
IC502
28LF92H NVM (Samsung CRT)
28LF92SAMNVM/
AF
IC502
28LW92H NVM
V20137502
AF
IC502
32LF92H NVM
V20148983
AF
IC502
32LW92H NVM
V20148818
AF
IC502
Blank NVM
V30009005
AG
Display
