Table 4-10. Resistance Check Circuit Troubleshooting Table.

Table 4-9. Insulation Check Circuit Troubleshooting Table.

Table 4-11. Aircraft Indicator Check Circuit Troubleshooting Table.

TM-55-4920-401-13P Test Set Fuel Quantity Gage Capacity Type P/N 361 010 002 Manual
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TM 55-4920-401-13&P Table 4-10. Resistance Check Circuit Troubleshooting Table. Malfunction Corrective Action R E S I S T A N C E C H E C K m e t e r cannot be zeroed. R E S I S T A N C E C H E C K m e t e r d o e s n o t d e f l e c t w h e n R E - S I S T A N C E & A / C I N D I C A T OR CHECK switch is in any position. RESISTANCE CHECK meter de- flects in full clockwise direction in a l l r e s i s t a n c e p o s i t i o n s o f R E- S I S T A N C E & A / C I N D I C A T OR CHECK switch. Probable Cause a . D e f e c t i v e R E - SISTANCE CHECK meter a. D e f e c t i v e R E - SISTANCE CHECK meter b. Defective FUNCTION SELECT switch c. Defective BAL po- t e n t i o m e t e r ( R 2 ) o n r e- s i s t a n c e a n d i n s u l a t i on check board a. Defective resistance check adapter b. Defective instrument cable c. Resistor R3 open on re- s i s t a n c e a n d i n s u l a t i on check board. d. Defective FUNCTION SELECT switch a. Replace meter (34, figure FO-8). a. Replace meter (34, figure FO-8). b. Replace switch 32, figure (4-37). c. Replace potentiometer (7, figure 4-38). a. Repair or replace adapter b. Repair or replace cable. c. Replace resistor (1, fig- ure 4-38). d. Replace switch (32, figure 4- 37). 4-12

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