User's Manual

123

Service Manual

5-6

5.4 Contrast Calibration Adjustment

After entering the Maintenance mode, the test tool display shows

Warming Up (CL 0200):IDLE (valid).

Do not press

now! If you did, turn the test tool off and on, and enter the

Maintenance mode again.

Proceed as follows to adjust the maximum display darkness (CL0100), the default

contrast (CL0110) , and the maximum display brightness (CL0120).

1. Press a three times to select the first calibration step. The display shows:

Contrast (CL 0100) :MANUAL

2. Press CAL. The display will show a dark test pattern, see Figure 5-2

3. Using

adjust the display to the maximum darkness, at which the test pattern

is only just visible.

4. Press to select the default contrast calibration. The display shows:

Contrast (CL 0110) :MANUAL

5. Press CAL. The display shows the test pattern at default contrast.

6. Using

set the display to optimal (becomes default) contrast.

7. Press to select maximum brightness calibration. The display shows:

Contrast (CL 0120) :MANUAL

8. Press CAL. The display shows a bright test pattern.

9. Using

adjust the display to the maximum brightness, at which the test

pattern is only just visible.

10. You can now :

• Exit, if only the Contrast had to be adjusted. Continue at Section 5.7.

• Do the complete calibration. Press

to select the next step (Warming Up),

and continue at Section 5.5.

Figure 5-2. Display Test Pattern