TM 9-4120-407-14
NOTE
Checking resistance between any two connector pins A, B, C, or D is
not necessary. If it is checked for any reason, the resistance should be
1120 224 k ohms.
4 Check the resistance between connector J16 pins A, B, C, and D in sequence to EMI filter
(FLl) (1) case. A resistance of 560 56 k-ohms should be indicated.
(c) Replace the EM1 filter (1) if it fails any of the continuity/resistance tests.
(2) EMI Filter (FL2) Testing.
(a) Disconnect input power cable from air conditioner.
NOTE
Removing output power cable connector J16 will make input power
cable connector J15 more accessible.
(b) Disconnect input power cable connector (2) from EMI filter (FL1) (1) Figure 3-36.
(c) Put the circuit breaker (3) in the ON (up) position.
(d) Using multimeter set to measure resistance, perform the following checks between connectors (2)
and (4).
1 Check for continuity between connector P15 pin E to J11 pin E. Continuity should be
indicated.
2 Check for continuity between connector P15 or J11 pin E to EMI filter (FL2) (5) case.
Continuity should be indicated.
3. Check for continuity between connector P15 pins A, B, C, and D in sequence to matching pins
A, B, C, and D on connector J11. Continuity should be indicated.
4 Check the resistance between connector J11 pins A, B, C, and D in sequence to EMI filter
(FL2) (5) case. No continuity should be indicated.
(e) Replace the EMI filter (FL2) (5) if it fails any of the continuity/resistance tests.
3-99
