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VC-A39HM (serv.man20). Comments on RF converter switching - Sharp VCR Technical Bulletin (repair manual)

vc-a39hm (serv.man20) technical bulletin
Model
VC-A39HM (serv.man20)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
8.21 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
VCR / Comments on RF converter switching
File
vc-a39hm-sm20.pdf
Date
Next: Sharp VC-A39HM (serv.man21) Technical Bulletin

Read Sharp VC-A39HM (serv.man20) Technical Bulletin online

Sharp Electronics (UK) Ltd Technical Support Group
Originator ________ Supervisor_________ Approval Date ___/___/___   TB9411234
    Date :
21 December 1998
    Model:
VCA39HM
    Ref No:
VCA39-001
    Classification: 
Routine
VIDEO TECHNICAL BULLETIN
Page 1 of 1
Subject : RF switching control
SYMPTOM After replacement of IC801 with the alternative part (RH-IX0878GEZZ) or models with
serial numbers higher than 41163191 the RF output on/off switch no longer operates.
CAUSE
Alteration to the software within IC801.
ACTION
This feature has been disabled, for customers who require this feature.
1.
Fit the original type of IC801
2.
If fitted remove the link RJ18 between the emitter/collector of Q990. 
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
Original
RH-IX0867GEZZ
BB
IC801
Alternative
RH-IX0878GEZZ
BE
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