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Toshiba V-856G Service Seite 112

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2-4. 3DNR Module Troubleshooting Flow
Chart
3DNR module ( HROO1 ) is checked with the following
procedures, and if some defects are found, replace the
module with new one.
2-4-1. Example of operation check procedure
1) Preparing equipments
¢ V-856G
¢ Standard color bar generator
¢ Alignment tape
2) Connection procedure
Line cable
Line cable
3) Operation check procedure
Turning [3DNR] off. --> Playback the tape which the
color bar signal is recorded. --> Turning [3DNR] on after
checking whole murky noises on the color bar. Be sure
that whole noises are reduced in this status.
2-48
2-4-2. Troubleshooting flow chart
Procedure 1.
First, check the power supply voltage and the installation
state of the 3DNR module.
Procedure 2.
Classify the defective symptoms into groups.
Check the screen on playback according to the operation
check procedure 2-4-1.
Procedure 3.
Check the defects according to the flow chart.
Flow chart
Defective symptoms
No display appears when playing-
"
H
back, or large turbulence and noises
occur.
No color appears when playing-back,
or color noises appear a lot.

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