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LED Indicators
Fig. 6
These operators include a self-diagnostic circuit board using
troubleshooting LED indicators to signal the technician of
a problem.
TROUBLESHOOTING
LED S
STB
ENAB
+ 24
VAC
EXT
INTLK
HOIST
INTLK
DETAIL
Figure 7
GCL-MT
Medium Duty Operator
HOIST
INTERLOCK
ON
OFF
TB
N B
+ 4
AC
XT
N LK
O ST
N LK
OFF
FUSE F2
OFF
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TROUBLESHOOTING LED's
EXTERNAL
+ 24 VOLTS
STB
ENABLE INDICATION
INTERLOCK
DC
OFF
STB DISABLED
ON
STB ENABLED
ON
ON
NORMAL OPERATING CONDITION
HOIST INTERLOCK SWITCH OPEN:
1) HOIST RELEASE NEEDS RESET.
ON
ON
2) HOIST INTERLOCK CONNECTOR NOT PLUGGED IN.
3) HOIST INTERLOCK DEFECTIVE.
OFF
ON
EXTERNAL INTERLOCK OPEN
POWER SUPPLY PROBLEM:
1) CHECK AC POWER SUPPLY.
OFF
OFF
2) CHECK MAIN POWER FUSE.
3) CHECK SECONDARY FUSE (2A).
08-12
8.4
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Table of Contents
Troubleshooting
