Position FRU name
Possible failing
component
Type, CCIN, or part number
(use the Type, model, and
part number list to determine
the part number when the
type or CCIN are given.)
Remove and
replace/recovery procedure
R01 Processor
regulator card
Processor
regulator
v All except type 24A2 and
25BD, use part number
04N4276
v 24A2 (See page 523) (2-way)
v 25BD (See page 523)
(2-way)
Go to Models 270, 800, and
810 - Processor regulator -
R01
M02
daughter
card
Memory DIMM See Figure 2.
Processor card
with DIMM
memory (See
page 364) in the
Memory locations
and placement
rules topic.
3022 (See page 528), 3024
(See page 528), 3025 (See
page 528), 3026 (See page
528), 3027 (See page 528),
3029 (See page 528)
Go to Models 270, 800, and
810 - Cards (dedicated)
Time of day
(TOD)
battery on
MB1
TOD TOD 16G8095 Go to Models 270, 800, and
810 - Time of day (TOD)
battery
HSL cables
on the HSL
ports
HSL cable HSL connection See the Type, model, and part
number list.
Go to HSL cables -
Concurrent.
Figure 3. Model 270 system unit, processor features 23E7, 23F0, 23F1, 2452 (Processor embedded
on backplane)
Notes:
Analyze hardware problems 235