IBM 6151 Maintenance And Service Manual page 81

19x
RT PC Floating-Point Board
Additional Tests: None
Removal Procedure: See Processor, Floating-Point, or System
Memory Removal in Section 4.
Repair Checkout: Run the System Checkout.
1Cx
Advanced Floating-Point Board (Levell)
Additional Tests: None
Removal Procedure: See Processor, Floating-Point, or System
Memory Removal in Section 4.
Repair Checkout: Run the System Checkout.
1Dx
RT PC 4MB Fast 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 3-0020-3