Item
PAL APC
Adjustment
Test equipment
Signal generator
(PAL colour bar)
Oscillo-scope
Test points
TP-CR : S4(Z) pin
TP-CB: S4@ pin
[INPUT PWB]
•
PAL chroma Signal generator SCREEN
Synchronous (PAL full colour bar)
adjustment
•
Adjustment
locations
APC SW
SUB COLOUR VR
LISSAJOUS 1 TR.
DL AMPVR
[INPUT PWB]
APC SW
4.43 APC TRIM.
[INPUT PWB]
No.51766
TM-H140PN
Adjustment procedure
• Low light white balance adjustment have been
correct finished .
1. Input the PAL colour bar signal.
2. Connect the oscillo-scope probe to the TP-CR
and TP-CB , and switch the sweep mode of the
osciro-scope to the X-Y display .
3. Turn the APC SW to "Adjust" side from
"Normal" side to cancel the colour synchronous
mode.
4. Adjust the SUB COLOUR VR to the wave form
of the lissajous not to close by each other .
5. Then alternately adjust the LISSAJOUS 1
TRANSF and DL AMP VR , so that to be 3
straight lines from 6 ovals .
6. Release the APC SW to the "Normal" side .
• PAL colour lissajous adjustment have been
finished.
1. Input the PAL full colour bar .
2. Turn the APC SW to "Adjust " side from
"Normal" side to cancel the colour synchronous
mode.
3. Adjust the 4.43 APC TRIMER to disappear the
colour stripe on the screen.
4. Turn the APC SW to "Normal" side .
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