Specifications

SQ: 6-21
RS3: Service Quick Reference Guide
ControlFiles
Bubble NV Memory LEDs and Test Points
LED Meaning and Response
5 V FUSE BLOWN
(DS3)
Replace Fuse F1 (Supplies 5 VDC to the card).
CARD FAULT
(DS2)
A fault is detected on the nonvolatile memory or the
Enable/Disable Switch i s DISABLED. If the switch is ENABLED
and this LED is ON, replace the card.
CARD ENABLED
(DS1)
The E nable/Disable switch is ENABLED and no hardware faults
are detected on the Nonvolatile Memory card.
Test Point Function
Yellow +5 V (± 0.1 V)
Red +12 V (± 0.1 V)
Brown Ground Return
Bubble NV Memory Fuses
Card
Fuse
FRSI
Part No.
Bussman
Part No.
Littelfuse
Part No.
Characteris-
tics
1984--1598--000x F1 G09140--0060 MTH 4 312004
4 A 250 V
Regular
F2 G09140--0041 MTH 5 312005
5 A 250V
Regular
1984--1483--000x F1 G09140--0060 MTH 4 312004
4 A 250 V
Regular
F2 G09140--0030 AGC 2 312002
2 A 250 V
Quick Acting
1984--1224--000x F1 G09140--0038 MDL 4 313004
4 A 250V
Slow Blow
F2 G09140--0030 AGC 2 312002
2 A 250 V
Quick Acting