Panasonic PV-M2738 Operating, Service Manual

Page: 53 / 151

2-32
SUB BRIGHTNESS ADJUSTMENT
Purpose :
To set the optimum brightness level.
Symptom of Misadjustment :
The picture is too white or too black.
Note:
Perform this adjustment in a darkened room.
Test Point : ----------
Adjustment : SUB BRIGHT (EVR)
Specification: Refer to descriptions below.
Input
: ----------
Mode : STOP
1. Do not input any signal to the unit.
2. Set INPUT SELECT item to LINE in SET UP TV menu to
display black screen.
3. Select SUB BRIGHT in EVR adjustment mode, and adjust
so that the black screen starts to turn grey (lighting only).
10. Supply a White Pattern Signal to the Video Input Jack.
11. Press DISPLAY key on the remote control again to return
for full frame scan.
12. Select G DRIVE and B DRIVE in EVR adjustment mode
and adjust so that the entire screen is white.
13. Select SUB BRIGHT in EVR adjustment mode. Then, after
making a note of the original value, adjust to the minimum
(C0) and while turning SUB BRIGHT value from minimum
(C0) up to maximum (3F), confirm that the screen is
tracking the White Pattern properly.
Repeat the above steps 5, 9, 11, and 12 until the screen is
properly tracking the White Pattern.
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.