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28LF-94H (serv.man4). Intermittent reset - Sharp TV Technical Bulletin (repair manual)

28lf-94h (serv.man4) technical bulletin
Model
28LF-94H (serv.man4)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
2.93 MB
Type
PDF
Document
Technical Bulletin
Brand
Device
TV / CTR / Intermittent reset
File
28lf-94h-sm4.pdf
Date
Next: Sharp 28LF-94H (serv.man5) Technical Bulletin

Read Sharp 28LF-94H (serv.man4) Technical Bulletin online

CTV 2005 11 02
Date of Issue:    18
th
 November 2005
        
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 2
Sharp Electronics (UK) Limited
Reference - SP054000X
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
28LF94H
SYMPTOM Intermittent reset.
CAUSE
Noise on the reset line.
ACTION
Replace R844 with a SMD jumper link.  This resistor is mounted on the 100Hz PWB
Note
By shorting S723, the microprocessor can be reset.  However, when R844 is replaced
by a jumper link, this will no longer be possible.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
R844
SMD jumper link
V30022132
AB
Physical Location of R844
CTV 2005 11 02
Date of Issue:    18
th
 November 2005
        
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 2 of 2
Sharp Electronics (UK) Limited
Reference - SP054000X
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
Schematic Location of R844
Page of 2
Display

Download Sharp 28LF-94H (serv.man4) Technical Bulletin

Here you can read online and download Sharp 28LF-94H (serv.man4) Technical Bulletin in PDF. 28LF-94H (serv.man4) technical bulletin will guide through the process and help you recover, restore, fix, disassemble and repair Sharp 28LF-94H (serv.man4) CTR. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.

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