Sony UP-897MD - Brightness, Contrast, and Head Voltage Adjustment

2-3. Brightness and Contrast
Adjustment
After replacing the MA-132 board, perform the following
adjustment procedure.
Required equipment
* Monitor
* Digital voltmeter
* 10 step signal generator
(Equivalent to Tektronix 1410 (NTSC signal))
Connection
* Input signal: 10 step signal
* Connect this unit and the monitor.
Procedure
1. Reset this unit to the factory setting.
(Refer to Section 2-1-3.)
2. Rotate the jog dial to display “VOLME” on LCD, and
then press the button.
The adjustment mode starts.
3. Check that the CONTRAST volume and BRIGHT
volume are displayed at the center.
OK NG
4. An oblong-shaped frame is displayed almost at the
center of each step.
UP-897MD
5. Adjust with @RV503 and @RV504 while checking the
monitor until the specification is satisfied.
A E
12
09--14--18
B CD F GH
BSASD
(A=C is ideal.)
FSESH
(E=G is ideal.)
13 13
09--13--18
09--14--18
6. Check that “OK” is displayed at the bottom of the
screen.
2-3