Read Sharp 21LF-90H (serv.man6) Technical Bulletin online
CTV 2004 11 02
Date of Issue: 3
rd
November 2004
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
Reference - SP042900X
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
21LF90H
REASON
Standardisation of IC501.
ACTION
If IC501 has to be replaced, use the part number given below.
It is also necessary to change bit 5 high after replacing this IC - see below:
1. Enter the service mode by pressing the menu button on the remote control then
digits 4, 7, 2 and 5 consecutively.
2. Use the down arrow button on the remote control to select TX1.
3. Use the right arrow button on the remote control to select bit 5.
4. Press the 1 button on the remote control to set this bit. This is stored
3. Use the right arrow button on the remote control to select bit 5.
4. Press the 1 button on the remote control to set this bit. This is stored
automatically.
5. Turn the television off at the mains supply to exit the service mode.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC501
IC, OTP
V20170085
BF
Display
