IBM 6151 Maintenance And Service Manual page 93

4Ix
IBM PC Enhanced Graphics Adapter
Additional Tests: Run the Display Checkout.
Removal Procedure: See "Removal and Replacement
Procedures" on page 9-042-1.
Repair Checkout: Run the Display Checkout.
42x
IBM PC Graphics Memory Expansion Card
Do not return to the Start of Call PIC, go to "IBM PC
Enhanced Graphics Adapter Memory PIC 4200" on
page 3-4200-1.
43x
Advanced Monochrome Graphics Display Adapter
Additional Tests: Run the Display Checkout.
Removal Procedure: See Adapter Removal in Section 4.
Repair Checkout: Run the Display Checkout.
(6/88) Problem Isolation Charts 3-0020-15