IBM 6151 Maintenance And Service Manual page 99

59x
IBM 6154 Display
Additional Tests: Run the Display Checkout.
Removal Procedure: See Attached Device Removal in
Section 4.
Repair Checkout: Run the Display Checkout.
5Ax
8-Port Cable Assembly - RS-422A
Additional Tests: None
Removal Procedure: If the adapter is in the system unit, see
AdalJter Remov 11 in Section 4, otherwise
see the service information for the unit
where the adapter is installed.
Repair Checkout: Run the RT PC 8-Port Asynchronous RS422
Adapter Checkout.
(6/88) Problem Isolation Charts 3-0020-21