Read Sharp LC-22SV2E (serv.man33) Technical Bulletin online
LV079
Sharp Electronics (UK) Ltd., Technical Services Group
General
Please note this information for your service.
Model
Model
S/No. range
Model
S/No. Range
AC adapter
LC-20B4E
~ 302311140
LC-20B4E
~ 302311112
UADP-0241CEPZ
LC-20B2EA
~ 210314439
LC-20B2EA
~ 206311362
LC-20B2EA
~ 303312171
LC-20E1E
~ 210312516
LC-20E1E
~ 208311682
LC-20C2EA
~ 206311820
LC-20E1E
~ 303312081
LC-20C2EA
~ 202311112
LC-22SV2E
~ 302313048
LC-22SV2E
~ 302315376
Problem
Whistle noise is audible from AC adapter when the unit is turned off.
Cause
Resonance between the PWB and the ceramic chip capacitor in AC adapter
Countermeasure
The improved AC adapter is used in the production units after the serial number above.
The improved AC adapter has the following rev code and date code on the label of AC
adapter.
(No parts code change)
The improved AC adapter has the following rev code and date code on the label of AC
adapter.
(No parts code change)
AC adapter
Rev code
Date code
UADP-0243CEPZ
K or after
K3C27D or after
UADP-0241CEPZ
M or after
M3C27D or after
Servicing
If a customer complains of this problem, please replace the AC adapter with the improved
one.
one.
WHISTLE NOISE IS AUDIBLE FROM AC
ADAPTER WHEN THE UNIT IS TURNED OFF
TECHNICAL BULLETIN
Date: 05 June 2003
Model: LC22-SV2E
Ref.:
Model: LC22-SV2E
Ref.:
002
Colour: White
Page:
Page:
1 of 2
LV079
Sharp Electronics (UK) Ltd., Technical Services Group
Label of the improved AC adapter
Display