akira CT-29TP9An, Руководство по обслуживанию

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Model No: CT-29TP9AS-5P60
Version 1.0
TYPICAL TROUBLE SHOOTING CHART
Figure 1-1: Repair logic chart for BG System
BG SETTING
Changeover sound system selection
No BG selection, only
DK/I/M selection BG selection O.K. but Dark or blue screen & No Pix
Factory Menu BG System
option not set
Other system mode
also No Picture Other system mode
Normal Picture
Short circuit IC101
pin 38 & pin 40 IC802 4052 switching
selection abnormal
Selection
circuitry after
IC101 faulty
RF/IF stage
malfunction
Open circuit R225, 4052
& J144, J145. Restore to
normal.
Replace IC802 4052
switching selection.
Yes
Open J151, direct
flyover wire from
J151 to C230
IC802 switch
selection faulty IC801 switch selection
faulty
OK NG
Press clock P.M. ( )
button to enter Factory Mode
Menu. Press RC button 5, edit OP5
BZT1 to 1.
OP5: 255: 1 1 1 1 1 1 1 1
No change
I BG