IBM RT PC 10 Hardware Maintenance And Service page 96

Step 28
1. Set the power switch on the system unit and display to Off.
2. Remove the rear cover of the system unit (page 4-10).
3. Disconnect the display signal cable.
4. Set the power switch on the system unit and display to On.
5. Wait one minutes, then answer the following question.
IS THE DISPLAY SCREEN COMPLETELY LIGHTED?
NO Record SRN 26-580, then go to "Step 2" on page 3-6.
YES Continue on the next page.
Problem Isolation Charts
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