Specifications

SQ: 6-20
RS3: Service Quick Reference Guide
ControlFiles
NV (Nonvolatile) Memory:
Bubble 1984-1598-000x...........................................
1984-1483-000x...................................................
1984-1224-000x...................................................
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.
Bubble NV Memory Parts Replacement
Part No.
Replaces Memory Board Marked
1984--1598--0001 Any card below
1
Megabyte
Bubble
4 MEG NV BUBBLE MEMORY
(NOTE: This is 4 Megabits,
which gives 1 Megabyte of
useable memory)
1984--1483--000x 1984--1224--000x
1/2
Megabyte
Bubble
NV BUBBLE MEMORY
1984--1224--000x -- --
1/2
Megabyte
Bubble
NV BUBBLE MEMORY
Bubble NV Memory LEDs and Test Points
LED
Meaning and Response
PROGRAM ACCESS
(DS8)
The Coordinator Processor is accessing the main operating
programs of a Controller P rocessor or itself. The card is reading
from Nonvolatile Memory to download data to a card, or is writing
to the m emory card from the disk drive.
WRITE
(DS7)
The Coordinator Processor is writing to the Nonvolatile Memory
Card.
READ
(DS6)
The Coordinator Processor is reading the Nonvolatile Memory
Card.
12VFUSEBLOWN
(DS4)
Replace Fuse F2 (Supplies 12 VDC to the card).