Komatsu 830E-AC Shop Manual page 807

TROUBLESHOOTING THE ELECTRIC DETECTION SYSTEM
TROUBLE: Green Indicator Light on Control Module Does Not Go On When Button is Depressed.
POSSIBLE CAUSES
Blown fuse in battery connector assembly
Battery connection loose
Connector between power wiring unsnapped or wire
broken
Dead battery
Bulb burned out
TROUBLE: Test Module Light Will Not Illuminate.
POSSIBLE CAUSES
Jumper assembly not in place on end of detection
zone wiring
Connector apart on either power or detection zone
wiring
Bulb burned out
Blown fuse in battery connector assembly
Wire broken
Dead battery
Battery connection loose
TROUBLE: Test Module Light Will Not Go Out
POSSIBLE CAUSES
Jumper assembly left in place on end of detection wire
Damaged section at detection wire
TROUBLE: Detonated Squib
POSSIBLE CAUSES
Check for previous fire condition
Detection wire too close to heat source
Test jumper assembly left in place after testing
M02005
SUGGESTED CORRECTIVE ACTION
Look for possible short in external power wiring and
change fuse
Clean and tighten
Reconnect/install new length
Charge battery or install new one
Loosen green lens, install new bulb
SUGGESTED CORRECTIVE ACTION
Install jumper assembly
Reconnect
Loosen green lens, install new bulb
Look for possible short in external power wiring and
change fuse
Install new length
Charge battery or install new one
Clean and tighten
SUGGESTED CORRECTIVE ACTION
Remove jumper. Reinstall plugged blank connector
Replace damaged length(s) of detection wire.
SUGGESTED CORRECTIVE ACTION
Replace length(s) of detection zone wire. Replace
squib and recharge
Check for broken points of security, move away from
heat source, and recharge
Remove jumper, reinstall plugged end of line connector
and recharge
Fire Control Systems M2-13