ARMY TM 9-6115-671-14
AIR FORCE TO 35C2-3-446-32
MARINE CORPS TM 09249A/09246A-14
4-38
TABLE 4-4 UNIT TROUBLESHOOTING (CONTINUED)
Not OK
Not OK
OK
Not OK
OK
No
OK
Yes
OK
Not OK
No
Not OK
Not OK
OK
OK
Not OK
Yes
No
CIM DISPLAY SCREEN VOLTAGE GAGE
DOES NOT INDICATE VOLTAGE
CIM display screen VOLTAGE
gage does not indicate voltage.
Check ribbon cables
between I/O and
Backplane.
Repair or replace wires
as needed. (See
schematic F01)
Check voltage regulator
LEDs with generator set
running. Are they all lit?
Check for output voltage
at AC circuit interrupter.
Is it set for rated voltage?
Is CIM screen being
updated?
Troubleshoot voltage
regulator circuit for broken
wires or loose connections.
Refer to Schematic, FO-1.
Check Field Flash circuit
wires. (see schematic
F01)
Repair or replace broken
wires or loose connections.
Refer to Wiring Diagram,
FO-3.
Troubleshoot voltage regulator
circuit for broken wires or loose
connections. Refer to schematic
FO-1.
Are any phases on the CIM display
screen indicating voltage ?
Troubleshoot circuit from P5 to K1
(refer to schematic FO-1).
Refer to Symptom
Index " CIM does not
respond to key pad or
update display".
Inspect and test Field
flash relay K23. (Ref
Para. 4.8.34)
Inspect and test
Resistor R6 (see Para
4.8.36).
Is HEARTBEAT indicator on
I/O interface module blinking?
(see para. 4.8.25).
Test Backplane
(see Para 4.8.24).
Replace I/O module
(see Para. 4.8.25).
Yes
OK
Replace Field flash relay
K23. (Ref Para. 4.8.34)
OK
Replace Resistor R6
(see Para 4.8.36).
Not OK
Inspect and Test
Diodes CR7 & CR8
(see Para 4.8.29).
OK
Replace Diodes CR7
& CR8 (see Para
4.8.29).
Test Auto. Voltage
Regulator(see Para
4.8.23).
Replace Backplane
(see para. 4.8.24).
Replace Voltage
Regulator(see Para 4.8.23).
OK
Notify next higher
level maintanance.
Replace ribbon cables
between I/O and
Backplane.
Not OK
Not OK
