S 865-006
(2)
Set the WING ANTI-ICE switch and the NACELLE ANTI-ICE 1, 2, 3, and 4 switches on the anti-ice/rain removal module (P5 panel) to OFF.
S 865-039
(3)
Set the GND TEST switch on the P461, Overhead Maintenance Panel to ENABLE.
S 865-040
(4)
Prepare the CDU for the test:
(a)
Push the MENU key on the CDU to show the MENU.
(b)
Push the line-select key (LSK) that is adjacent to <CMC to show the CMC MENU.
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(c)
If <RETURN shows after you push the LSK, push the LSK that is adjacent to <RETURN until you see the CMC MENU.
(d)
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.
(e)
Push the NEXT PAGE key until you find <30 ICE AND RAIN.
(f)
Push the LSK that is adjacent to <30 ICE AND RAIN to show the GROUND TESTS menu for the ice and rain system.
NOTE: If INHIBITED shows above <ICE DETECTOR-L or <ICE
____ DETECTOR-R, the test will not operate.
(g) CMC SOFTWARE P/N 685-2270-008; If INHIBITED shows above <ICE DETECTOR-L or <ICE DETECTOR-R: 1) Push the LSK that is adjacent to the test prompt. 2) Do the steps which show on the CDU (push the NEXT PAGE key
to see subsequent pages). 3) Push the LSK that is adjacent to <RETURN to show the ground test menu again.
F. Ice Detection System Ground Test
S 745-043
(1) Push the LSK that is adjacent to the applicable prompt,
<ICE DETECTOR-L or <ICE DETECTOR-R.
NOTE: IN PROGRESS will show during the test.
____
S 745-045
(2) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <ICE DETECTOR-L or <ICE DETECTOR-R.
NOTE: If a PASS indication shows, no failures occurred during the
____
test.
(a) If FAIL> shows:
1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure.
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2) Push the NEXT PAGE key until you find all the GROUND TEST MSG pages. 3) Make a list of all CMCS messages, CMCS message numbers, and ATA numbers that show on the GROUND TEST MSG pages. 4) Go to the CMCS Message Index of the Fault Isolation Manual (FIM) to find the corrective action for each CMCS message.
G. Put the Airplane in Its Usual Condition
S 865-041
(1)
Set the GND TEST switch to NORM.
S 865-038
(2)
Remove electrical power (AMM 24-22-00/201).
TASK 30-81-00-715-050
3. Operational Test - Ice Detection System_______________________________________
A. General
(1)
In this task you will apply pressure to the tip of the ice detector probe to supply a signal equivalent to ice on the tip.
(2)
If you want to do the CMC ground test of the ice detection system again after this operational test, you must let the ice detector cool for approximately 5 minutes after the operational test.
B. Standard Tools and Equipment
(1) Glove - Heat Resistant
C. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 32-09-02/201, Air/Ground Relay System
D. Access
(1) Location Zone 221 Control Cabin, LH 222 Control Cabin, RH 115 Area between Nose Gear Well and Fuselage, LH 116 Area between Nose Gear Well and Fuselage, RH
E. Preconditions
S 865-053
(1) These conditions are necessary for this task:
(a) Electrical power on (AMM 24-22-00/201).
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