TROUBLESHOOTING | ||
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PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
23. Display is blank
a. Power source is OFF.
b. Feeder supply fuse or circuit breaker at power source is blown or tripped.
c. Display or Control PC board is bad
a. Turn ON power source.
b. Check input cable and feeder unit for short in 41 and 42 circuit. Check for shorted motor. Replace fuse or reset circuit breaker.
c. Observe LED mounted on Control PC board. It should blink on and off at a controlled rate of 1 second ON and 1 second OFF. If so, then replace Display PC board. If not, replace Control PC board. (See Procedure for Replacing PC boards)
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
SYNERGIC 7 & 7H
