TABLE NO. 3-6. Multimeter Does Not Indicate -15.15 6 0.15 Vdc When POWER 115 VAC 400 Hz Test Set Circuit Breaker Is Pushed In.

TM 1-6625-735-14

TABLE NO. 3-6. Multimeter Does Not Indicate -15.15 6 0.15 Vdc When POWER 115 VAC 400 Hz

Test Set Circuit Breaker Is Pushed In. (Cont)

TEST OR INSPECTION

CORRECTIVE ACTION

5. Check for 115 vac between the ac terminals of PS1.

Step 1. If voltage is present, go to 11.

Step 2. If voltage is not present, go to 6.

6. Check continuity of Filter FL1.

Step 1. If continuity is present, go to 7.

Step 2. If continuity is not present, replace FL1.

7. Check continuity of CB4.

Step 1. If continuity is present, go to 8.

Step 2. If continuity is not present, replace CB4.

8. Check continuity through contacts A2 and A3 of relay K1.

Step 1. If continuity is present, go to 9.

Step 2. If continuity is not present, replace K1.

9. Check continuity between contact A3 of relay K1 and J3-A.

Step 1. If continuity is present, go to 10.

Step 2. If continuity is not present, repair/replace wiring as required.

10. Check ac return through contacts B2 and B3 of relay K1.

Step 1. If ac return is present, go to 15.

Step 2. If ac return is not present, replace K1.

11. Check PS1 for 15 6 0.15 vdc.

Step 1. If voltage is low, go to 12.

12. Disconnect lead to + terminal of PS1. Go to 13.

13. Connect multimeter + lead to + terminal of PS1 and - lead to T/C terminal of PS1.

Step 1. If multimeter indicates 15 6 0.15 vdc, go to 14.

Step 2. If multimeter does not indicate 15 6 0.15 vdc, replace PS1.

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