IBM 5531 Operator's Manual page 167

Problem Determination Procedures
Test 9000 -IBM Industrial Color Display
(continued)
Vertical-Size Adjustment
1. Did you come directly from Step 39 of the previous section?
YES - Go to Step 10.
NO - Continue with the next step.
2. Did you come here directly for a vertical-size adjustment?
YES - Continue with the next step.
NO - You should not be here. Return to the last step that sent you to this test.
3. BASIC is needed for the following steps.
a. Open the load lever(s) on your diskette drive(s).
b. Set the system unit's Power switch to Off.
c. Wait 10 seconds and set the Power switch to On.
4. After some delay, does the IBM Personal Computer BASIC message appear on the screen?
YES - Go to Step 7.
NO - Continue with the next step.
5. An operating system must have loaded from a fixed disk. When the C> appears on the
screen, type BASIC and press the Enter key.
6. Did BASIC load?
YES - Continue with the next step.
NO - Determine why BASIC does not load. After loading BASIC, continue with the
next step.
7. Type SCREEN 1 and press the Enter key.
8. Type COLOR 7,0 and press the Enter key.
9. Type CLS and press the Enter key.
10. OK should appear in the upper-left corner of the screen. Adjust the left vertical control so
the 0 in OK is an equal distance from the left edge and the top edge of the screen.
5-9000-6
IBM Industrial Color Display