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KP-44PX3
RM-945
Part Replaced ( )
D Board
C8129, D8038, D8013, Q8024, R8002,
R8055, R8102, R8218,
R8055, R8102, R8218,
R8219, R8223
R8230, R5140, R9901, T5102, T5104,
T8005 (FBT)
T8005 (FBT)
When replacing the following components marked with below
always check hold-down voltage and if necessary re-adjust.
5-1. HV Hold-Down Adjustment
1.
Turn off the TV set.
2.
Connect HV static voltmeter with peak hold to HV Block.
3.
Turn on the TV set.
4.
Switch the TV signal to white pattern
5.
Set the Picture to maximum and the Brightness to centre value.
6.
Adjust VR8001 so that high voltage at HV-Block is
31.0 +0.20/-0.20KV.
Part Replaced ( )
R9901
Fig. 5-1
SECTION 5 SAFETY RELATED ADJUSTMENT
5-1-1. HV Adjustment
Remove the cap off from
the unused terminal and
connect a HV static
voltmeter there.
the unused terminal and
connect a HV static
voltmeter there.
5-1-2. HV prot Adjustment
1.
Select Dot pattern.
2.
Set the Picture to minimum and the Brightness to minimum.
3.
Connect an external 10K Ohm VR at CN8015 and adjust this
VR so that HV is 34.0KV.
4.
Confirm that HV prot works when adjusting VR8002.
5.
Turn off the TV set. Set the external 10K Ohm VR to
maximum, then turn on the TV set.
6.
Gradually increase the high voltage using the 10K Ohm VR
and confirm that HV prot works when the high voltage is
within spec. ( Spec : 34.0 +0.40/-0.40KV ).
7.
Remove the external VR, HV voltmeter.
8.
Replace rubber cap on HV test terminal of HV block.
Note: After adjustment, fix VR8001, VR8002 with RTV KE-490.
Amended
Sectrions
Sectrions
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