Table 5-4. Troubleshooting - Continued

TM 9-4931-378-13&P

Table 5-4. Troubleshooting - Contined

Malfunction

Test or Inspection

Corrective Action

4. SHORT CIRCUIT BETWEEN TP4 AND J4-60 WITH S3 SET TO OFF (DOWN) POSITION.

Step 2. Check switch S3.

Replace switch S3.

OPEN CIRCUIT BETWEEN TP4 AND J3-13 WITH S20 SET TO ADS FLR.

Step 1. Check switch S20.

Replace switch S20.

Step 2. Perform continuity check of wiring to S20. (See paragraph 5-14 and figure FO-1.)

Repair wiring as necessary.

SHORT CIRCUIT BETWEEN TP4 AND J3-13 WITH S20 SET TO OFF (DOWN) POSITION.

Step 1. Check switch S20.

Replace switch S20.

NO CONTINUITY BETWEEN TP7 OR TP8 AND ANY OF THE CONNECTOR PINS DESIGNATED IN S10

WIRING CHECK.

Step 1. Perform continuity check of appropriate wiring. (See paragraph 5-14 and figure FO-1.)

Repair wiring as necessary.

Step 2. Check switch S10.

Replace switch S10.

NO CONTINUITY BETWEEN TP7 AND TP8 WITH S10 SET TO LAI +15V.

Step 1. Perform continuity check of appropriate wiring. (See paragraph 5-14 and figure FO-1.)

Repair wiring as necessary.

Step 2. Check resistor R2.

Replace resisitor R2.

RESISTANCE BETWEEN TP7 AND TP8 OUT OF TOLERANCE WITH S10 SET TO LAI +15.

Step 1. Check resistor R2.

Replace resistor R2.

10. NO CONTINUITY BETWEEN TP7 AND TP8 WITH S10 SET TO LAI -15V.

Step 1. Perform continuity check of appropriate wiring. (See paragraph 5-14 and figure F0-1.)

Repair wiring as necessary.

Step 2. Check resistor R3.

Replace resistor R3.

11. RESISTANCE BETWEEN TP7 AND TP8 OUT OF TOLERANCE WITH S10 SET TO LAI -15V.

Step 1. Check resistor R3.

Replace resistor R3.

12. NO CONTINUITY BETWEEN TP1 AND TP3 AT ANY POSITION OF S6 WITH S9 SET TO ATS.

Step 1. Perform continuity check of wiring to S6. (See paragraph 5-14 and figure FO-1.)

Repair wiring as necessary.

Step 2. Check switch S6.

Replace switch S6.

Step 3. Replace CCA 1A3.