h. System Unit Backplane in location MB1
i. Memory Riser Card in location M02
j. Memory Riser Card in location M05
4. This is a Model 840, SB3 System Unit and FC 9079 Base I/O Tower.
See “Locations — Models 840, SB3 System Unit with Processor Tower and FC
9079 Base I/O Tower” on page 719.
Replace the following FRUs in order one at a time until the problem is
resolved. See “Chapter 4. Removal and Installation Procedures” on page 617.
Note: Be sure to IPL in SLOW OVERRIDE mode after each replacement.
a. Clock Card in location M19
b. Regulator Card in location M04
c. Regulator Card in location M07
d. network interface controller (NIC) card in location M17
e. Processor Card 3 in location M16
f. Processor Card 1 in location M18
g. Processor Card 2 in location M06
h. Processor Card 0 in location M05
i. System Unit Backplane in location MB1
j. Memory Cards in bank A
k. Memory Cards in bank B
l. Memory Cards in bank C
m. Memory Cards in bank D
This ends the procedure.
TAPCLN
Clean the tape unit.
This ends the procedure.
TAPCNFG
Tape and DASD devices are attached to an I/O Processor that can not support
both Tape and DASD at the same time.
This ends the procedure.
TOD
A time of day battery may be failing.
Exchange the time of day battery – part 16G8095. For location see “Models 830 and
SB2 with FC 9074 - Final Assembly, Rear” on page 822 or “Assembly 10: FC 9079
Tower (Models 840 and SB3) – Final Assembly” on page 842. Use the table in the
locations section to find the remove and replace procedure.
This ends the procedure.
Symbolic FRUs
600
iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
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