Panasonic PV20DF25 - MONITOR/DVD COMBO, Service Manual

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Fig. E4-2
9. Turn the SCREEN CONTROL on the Flyback Transformer
clockwise carefully and stop at the point where any color is
first observed.
10. In EVR adjustment mode, select the two colors not
observed in step 8 from the following control functions (R
CUT-OFF, G CUT-OFF, B CUT-OFF) and adjust so that the
horizontal line becomes white.
For example, if the horizontal line appeared red in step 8,
select and adjust the B CUT-OFF and G CUT-OFF. (See
NOTE)
11. Press DISPLAY key on the remote control again to return
for full frame scan.
12. Select SUB BRIGHT in EVR adjustment mode and adjust
so that the picture has adequate brightness.
13. Select G DRIVE and B DRIVE in EVR adjustment mode
and adjust so that the entire screen is white.
Note:
Before pressing DISPLAY key on the remote control for
collapse scan, select the desired control function and move
the shaded area to the value.
7.2.8. SUB COLOR/SUB TINT
ADJUSTMENT
Purpose : To set the standard color phase.
Symptom of
Misadjustment : Color phase will be shifted.
Test Point : TP49 (CRT C.B.A.)
Adjustment : SUB COLOR (EVR),
SUB TINT (EVR),
Specification : Refer to descriptions below.
Input : Video Input Jack,
Rainbow Color Bar
Mode : STOP
Equipment : Oscilloscope,
NTSC Video Pattern Generator
1. Supply the Rainbow Color Bar signal to Video Input Jack.
2. Connect the Oscilloscope to TP49 on the CRT C.B.A.
3. Select SUB BRIGHT in EVR adjustment mode. Then, after
making a note of original value, adjust to the (C0).
4. Select SUB TINT in EVR adjustment mode and adjust so
that level A and B should be equal in amplitude.
Fig. E5-1
5. Select SUB COLOR in EVR adjustment mode and adjust
which higher level that level C is 1.40 V[p-p]±0.15 V[p-p].
Fig. E5-2
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PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25- K