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TM 55-6695-220-13&P
Table 3-7. Troubleshooting Chart (Contd)
Malfunction
Test or Inspection
Corrective Action
5. No output is obtained from tester while operating in thermocouple mode.
Check thermocouple test leads for open circuit.
If open circuit is found, repair test lead, para. 3-12.
6. No output is obtained from the tester while operating in pyrometer mode.
Step 1.
Check resistance thermometer test cable for broken or shorted conductor, or damaged connector
pin.
If condition exists repair or replace wire, or replace connector, para. 3-12.
Step 2.
Check to see if correct adapter cable is being used, or whether it has broken conductor or
damaged pin.
If condition exists select proper adapter or repair as necessary.
7. Voltmeter pointer sticks during motion.
Step 1. Check for armature loose from pivots.
If condition exists replace meter, para. 3-14.
Step 2. Look for pointer dragging on scale surface.
If condition exists replace meter, para. 3.14.
8. Resistance type temperature indicator reads substantially different value at one step of the temperature selector
switch.
Step 1.
Check printed circuit board PC-2 for damaged resistor or cut conductor trace.
If condition exists replace PC-2, para. 3-17.
3-13
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