IBM RT PC 10 Hardware Maintenance And Service page 157

3-112 Service Manual
24x
FRU: Personal Computer AT Math Co-Processor
Additional Tests: None
Removal Procedure: See "Adapter Removal" on page 4-16.
Repair Checkout: Run the Personal Computer AT Coprocessor
Option Checkout.
26x
110 Channel Memory Error
Additional Tests: None
Removal Procedure: An error occurred in memory attached to the
110 channel between memory addresses
OEOOOO and OFFFFF. This area of memory is
not supported as 110 channel memory in the
IBM RT PC System. Check for non-IBM
memory installed.
Repair Checkout: Run the System Checkout.
31x
FRU: IBM PC Network Adapter
Additional Tests: None
Removal Procedure: See "Adapter Removal" on page 4-16.
Repair Checkout: Run the PC Network Adapter Checkout.