Step 2 - IBM 3745 Maintenance Information Reference

STEP 1
Cable seating
STEP 2
STEP 3
Voltage Test Points
The COF messages are displayed:
CCUA INITIALIZATION ERROR
CCUB INITIALIZATION ERROR
Verify cable seating.
Check the label and the presence of each cable listed below:
Model 210 or 410
• Trileads CCU board-SACL (see YZ033-1 and YZ034-2)
• Trileads CCU board-MOSS board (see YZ034-2 and YZ031)
• Flat cables SACU-MOSS board (see YZ031 and YZ032-2)
• Black cables PS1-SACL-CCU board (see YZ033-2 and YZ034-1)
• Black cables SACL-MAC card (see YZ033 and YZ731)
• Flat cables SACL (see YZ033)
• Flat cables SACU (see YZ032)
• Flat cables CCU board (see YZ034).
Model 310 or 610
• Flat cables SACU2-MOSS board (see YZ031 and YZ032-2)
• Black cables PS1B-SACL2 (see YZ023 and YZ034-1)
• Flat cables SACU2 (see YZ022)
1. Set CP8 on the primary power box to the OFF position.
2. At the MOSS console call the POS (power services).
3. Select option C (create new configuration table) with answer Y (yes).
4. Press PF6, then 1 (display 3745 base frame).
5. Verify that PS 10 3 is suppressed from the table.
Next action is to run COF upgrade. See Figure 2-2 on page 2-55.
Verify the presence of all needed voltages on the following boards:
• SACU, SACL, CCU (see YZ333 or YZ323)
• MOSS (see YZ331).
2-56
IBM 3745 Maintenance Information Reference (MIR)