IBM System/36 Maintenance Information Manual page 21

Channel Isolation Procedure 155
In the 5363 machine, there are five devices which connect to the System/36 system channel. They are:
• Control storage processor (CSP) AIG2
• Al system board
• Data storage adapter AID2
• Either work station controller AIE2, or the work station adapter/control panel interface AIF2
• Main storage card BI-G. (This could be installed in the BI feature board).
Diagnostic Procedure
Note: Unless instructed not to, always power off the 5363 before removing, exchanging, or installing a FRU.
1. Remove the following cards from the 5363 system:
a. Data storage adapter (AID2)
b. Main storage card (BI-G)
Note: If the (B1) feature board is installed, it will also have to be removed.
c. Either work station controller or work station pass-through (AIE2).
2. IPL the system with wraps (1-0000). If an EOXX SRC is displayed, either the CSP (AIG2) or Al board
is bad. If a 2100 SRC is displayed, continue with the next step.
3. Reinstall the data storage adapter. (AID2)
4. IPL the system with wraps (1-0000). If a DC92 SRC is displayed, continue with step 5. If not, the data
storage adapter (A1D2) is defective.
5. Reinstall the main storage card. (B1-G)
6. IPL the system with wraps (1-0000). If a CF65 SRC is displayed, do one of the following, depending on
the machine configuration:
a. If the feature B1 board was removed from the system, go to step 8.
b. If a feature Bl board is not present on the system, go to step 9.
7. If not, the main storage card (B1-G) is defective.
8. Remove the main storage card from the BI-G slot. Reinstall the Bl feature board into the system.
Reinstall the main storage card (B1-G) and the feature lOP card (B1-A) into the B1 board. IPL with
wraps (1-0000). If SRC CF65 is displayed, continue with step 9. If not, the feature board, feature
power, or cards are defective. See "B1 Feature Board FRU Isolation Procedure 156" on page 1-10 and
"Feature" on page 4-12.
9. Reinstall the work station card (A1E2). IPL the 5363 with wraps (1-0000). If the sign on screen does not
appear, one of the following conditions exist:
a. Outboard work station configuration. The work station controller card at A1E2 is defective.
b. Inboard work station configuration. Either the work station pass-through card at A1E2 or, the work
station adapter/control panel interface card at A1F2 is defective.
c. Suspect the following FRUs:
% FRU
95 A1F2 Work station adapter
5 A1E2 Work station pass-through card.
Section 1. System Entry and FRU Isolation Procedures
1-9