Specifications

SQ: 6-16
RS3: Service Quick Reference Guide
ControlFiles
NV (Nonvolatile) Memory:
RAM 1984-2347-000x.............................................
CAUTION
Disable the NV Memory and then the Coordinator Processor
cards before removing any card (other than a PeerWay
Buffer card) from the ControlFile. Failure to do so may
result in a corrupted data transfer.
RAM NV Memory Parts Replacement
Part No.
Replaces Memory Board Marked
1984--2347--0041
4
Megabyte
RAM
NV MEMORY
1984--2347--0021 Any card below
2
Megabyte
RAM
NV MEMORY
1984--2347--0011 Any card below
1
Megabyte
RAM
NV MEMORY
RAM NV Memory LEDs and Test Points
LED
Meaning and Response
BATTERY 2 LOW
(DS10)
Battery 2 voltage is low.
Replace both batteries. (One at a time)
BATTERY 1 LOW
(DS9)
Battery 1 voltage is low.
Replace both batteries. (One at a time)
PROGRAM
ACCESS
(DS8)
The Coordinator Processor is accessing the main operating
programs of a Controller P rocessor or itself. The CP is reading
from Nonvolatile memory to download data to a card, or is writing to
Nonvolatile memory from the ControlFile.
WRITE
(DS7)
The Coordinator Processor is writing to the Nonvolatile memory.
READ
(DS6)
The Coordinator Processor is reading the Nonvolatile memory.
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