IBM 6150 Hardware Maintenance Manual page 230

Step 5
TNL SN20-9843 (03-27-87) to 75X0152 or 75X0166
1. Set the power switch on the system unit to On.
2. Wait 4 minutes or until the OPERATING INSTRUCTIONS display.
3. Adjust the Brightness Control to the desired level.
4. Look at the display screen.
Too Dim
Too Short
Changes Size When
Brightness Control
Turned
Too Wide Too Narrow
Too Small
Tilted
Out of Focus
Rolling
DOES YOUR DISPLAY HAVE A PROBLEM SIMILAR TO ANY
OF THE DISPLAY SCREENS ABOVE?
YES Record SRN 26-580-410, then go to the next page.
NO Continue on the next page.
(3/87) Problem Isolation Charts 3-5800-5