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DV-5131H (serv.man20). Counter measure for poor teletext reception - Sharp TV Technical Bulletin (repair manual)

dv-5131h (serv.man20) technical bulletin
Model
DV-5131H (serv.man20)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
9.48 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
TV / CTR / Counter measure for poor teletext reception
File
dv-5131h-sm20.pdf
Date
Next: Sharp DV-5131H (serv.man21) Technical Bulletin

Read Sharp DV-5131H (serv.man20) Technical Bulletin online

Sharp Electronics (UK) Ltd Technical Support Group
Originator ________ Supervisor_________ Approval Date ___/___/___   UK44200X
    Date :
21 December 1998
    Model:
DV5131H
    Ref No:
DV5131-006
    Classification: 
Routine
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Subject : Poor teletext reception
SYMPTOM Teletext not functioning on Channel 4 on certain transmitters only.
CAUSE
Alterations to teletext specifications.
ACTION
Carry out the following circuit alterations to the video PWB using the parts listed below:
1.
Remove SMD capacitor C874.
2.
Remove SMD resistor R830.
3.
Remove diode D810.
4.
Replace SMD resistor R825 (2.2k
6) with a SMD 1.8k6.
5.
Add 100pF capacitor (on copper side of PWB) across R871.
6.
Fit a 100pF SMD capacitor in position marked C240.
7.
Re-assemble and test.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
R825
1.8K
6 1/10W SMD resistor
VRS-TV1JD182J
AA
C240
100pF SMD capacitor
VCCSTV1HL101J
AA
Extra capacitor
100pF Ceramic capacitor
VCCSPA1HL101J
AA
Display

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Here you can read online and download Sharp DV-5131H (serv.man20) Technical Bulletin in PDF. DV-5131H (serv.man20) technical bulletin will guide through the process and help you recover, restore, fix, disassemble and repair Sharp DV-5131H (serv.man20) 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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