28. Perform the following:
a. Remove load cards Mxx in table below for application. The possible failing
loads are:
Model Load Position
840/SB3 M19 --clock card
b. Power on the system.
Does the system power on?
Yes No
↓ Go to next failing item.
29. Replace the clock card (M19).
30. Perform the following:
a. Power off the system.
b. Remove one of the regulator cards that wasn’t previously swapped
indicated in this table for the model selection for the SRC that was in steps
1 on page 530 to step 29 that sent you here and install a new one.
Number Model Regulator Part Number
1201/1401 840/SB3 R1, R2 21H7763
1202/1402 840/SB3 R4, R5, R6 21H7763
1203/1403 840/SB3 R6, R7, R8 21H7763
1204/1404 840/SB3 R9, R10 21H7763
1205/1405 840/SB3 R21 23L3613
1206/1406 840/SB3 R22 23l3613
1207/1407 840/SB3 R23 (Clock card) 23L7654
c. Power on the system.
Does the system power on?
Yes No
↓ The regulator you removed in this step is the failing item.
This ends the procedure.
31. Have you swapped out all the regulators?
No Yes
↓ This ends the procedure.
32. Perform the following:
a. Power off the system.
b. Remove the new regulator where installed previously and install the
original regulator.
c. Go to step 30 of this procedure.
DPAC
The two port adapter cable (PN - 21F9345) is the failing item.
This ends the procedure.
Symbolic FRUs
534
iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
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