R Subtask 79-00-00-280-055
R D. EMCD system functional check.
R (Ref. Fig. 606/TASK 79-00-00-991-308)
R (1) Disconnect the ECMD connector from the interface connector.
R (2) Do the EMCD functional check as follow:
R (a) Set Megohmmeter 100 Mohms to the ohm scale.
R (b) Bridge the gap between the 2 magnet poles with a jumper wire or
R any metallic piece.
R (c) Do a check of continuity check between pin 1 and 2 of the EMCD
R connector.
R (3) If there is not continuity:
R (a) Replace ECMD (Ref. TASK 79-21-50-000-001) (Ref. TASK 79-21-50-R 400-001).
R (4) If there is continuity:
R (a) Re-install EMCD into its housing located on the lubrication unit
R (see step H. Install the EMCD).
R (b) Do the step Visual indicator functional check
R Subtask 79-00-00-280-056
R E. Visual indicator functional check
R (Ref. Fig. 607/TASK 79-00-00-991-309)
R
R PRE SB CFM 79-0014
R
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____ R (Ref. TASK 24-41-00-861-002).
R (1) DPM electrical harness from the connector B receptacle on the visual
R indicator.
R (2) Do a check of the visual indicator functional as follow:
R (a) Close the circuit between pin 2 and 3 of the connector B
R receptacle with a metallic jumper for a minimum of 1 second.
R (b) Do a visual inspection of the visual indicator red pop out, it
R must extend (extension time < 1 second).
R (3) If the red pop out is not extend:
R (a) De-Energize the Aircraft Electrical Circuits from the External
R Power (Ref. TASK 24-41-00-862-002)
R (b) Replace the visual indicator (Ref. TASK 79-21-30-000-001)
R (Ref. TASK 79-21-30-400-001).
R (4) If the red pop out is extend:
R (a) De-Energize the Aircraft Electrical Circuits from the External
R Power (Ref. TASK 24-41-00-862-002).
R (b) Do the resetting of the visual indicator (Ref. TASK 79-21-30-440-R 001).
R (c) Do the step DPM electrical harness check.
R
R END OF PRE SB CFM 79-0014
R
R Subtask 79-00-00-280-059
R F. Visual indicator functional check
R (Ref. Fig. 608/TASK 79-00-00-991-310)
R
R POST SB 79-0014
R
R NOTE : Visual indicator must be energized by 28 volts Aircraft power only
____ R (Ref. TASK 24-41-00-861-002).
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(1) DPM electrical harness from the connector B receptacle on the visual indicator.
(2) Do a check of the visual indicator functional as follow:
(a) Close the circuit between pin 2 and 3 of the connector B receptacle with a metallic jumper for a minimum of 45 seconds.
(b) Do a visual inspection of the visual indicator red pop out, it must extend (extension time from 10 to 45 seconds).
(3) If the red pop out is not extend:
(a) De-Energize the Aircraft Electrical Circuits from the External Power (Ref. TASK 24-41-00-862-002)
(b) Replace the visual indicator (Ref. TASK 79-21-30-000-001) (Ref. TASK 79-21-30-400-001).
(4) If the red pop out is extend:
(a) De-Energize the Aircraft Electrical Circuits from the External Power (Ref. TASK 24-41-00-862-002).
(b) Do the resetting of the visual indicator (Ref. TASK 79-21-30-440-001).
(c) Do the step DPM electrical harness check.
END OF SB CFM 79-0014
Subtask 79-00-00-280-057
G. DPM electrical harness check
(Ref. Fig. 605/TASK 79-00-00-991-307)
(1) Do a check of continuity of the DPM electrical harness as follows:
(a) Set a megohmmeter to the ohm scale.
(b) Do a continuity check between: . pin 1 of DPM connector and pin 3 of INDCT-VIS connector . pin 2 of DPM connector and pin 2 of INDCT-VIS connector
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1 If there are not continuity:
_ a Replace the DPM electrical harness (Ref. TASK 79-21-30-000-
_ 002) (Ref. TASK 79-21-30-000-002).
2 If there are continuity:
_ a Reconnect the DPM electrical harness connectors on the
_ visual indicator and the EMCD.
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