IBM 6151 Maintenance And Service Manual page 79

Service Repair Action Number Chart PIC 0020
The following pages contain reference information. This chart is
in numerical sequence followed by alphabetical sequence.
Note: If an SRA number was released after this manual was
printed, the information for that SRA number may be at the end of
PIC 0020 or in a separate booklet.
lOx
System Board
Additional Tests: None
Removal Procedure: See System Board Removal in Section 4.
Repair Checkout: Run the System Checkout.
12x
RT PC 1MB Memory Expansion Option
Additional Tests: None
Removal Procedure: See Processor, Floating-Point, or System
Memory Removal in Section 4.
Repair Checkout: Run the System Checkout.
(6/88) Problem Isolation Charts 3-0020-1