(b)
Set the portable tester to SUBFRAME 0, WORD 14.
(c)
Make sure the BIT 2 light on the portable tester comes on.
(d)
Push the captain's PTT button.
(e)
Make sure the BIT 2 light on the portable tester goes out.
S 735-503
(10)
Use the first officer's audio selector panel and the first officer's PTT button to do the tests again.
S 865-504
(11)
If you will do no more tests, then do this task:
"Put the Airplane to its Usual Condition."
TASK 31-24-01-735-505
33. Autothrottle Disengage Switch Signal Test_________________________________________
A. Access
(1) Location Zones
101 Control Cabin - Left
102 Control Cabin - Right
B. Procedure
S 865-506
(1)
Make sure you did the Prepare For Input Parameter Test task.
S 735-507
(2)
Do this test of the signals from the autothrottle disengage switch:
(a)
Set the portable tester to SUBFRAME 0, WORD 8.
(b)
Make sure the BIT 1 light on the portable tester is on.
(c)
Push the A/T disengage switch on the thrust lever for engine No. 1.
(d)
Make sure the BIT 1 light on the portable tester goes out.
(e)
Release the A/T disengage switch.
S 865-508
(3) If you will do no more tests, then do this task:
"Put the Airplane to its Usual Condition."
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. BEJ 113 ú
31-24-01
ú ú 44B Page 543 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TASK 31-24-01-735-509
34. Autothrottle Warning Signals Test
_________________________________
A. Access
(1) Location Zones
101 Control Cabin - Left
102 Control Cabin - Right
B. Procedure
S 865-510
(1)
Make sure you did the Prepare For Input Parameter Test task.
S 735-511
(2)
Do this test of the autothrottle warning signals:
(a)
Set the portable tester to SUBFRAME 0, WORD 43.
(b)
Make sure the autothrottle is engaged.
(c)
Make sure the autothrottle warning lights are off.
(d)
Make sure the BIT 2 light on the portable tester is on.
(e)
Push the autothrottle disconnect switch.
(f)
Make sure the autothrottle warning lights flash.
(g)
Make sure the BIT 2 light on the portable tester is off.
(h)
Release the autothrottle disconnect switch.
S 865-512
(3) If you will do no more tests, then do this task:
"Put the Airplane to its Usual Condition."
TASK 31-24-01-735-513
35. Cabin Altitude > 10k ft Signals Test
____________________________________
A. Access
(1) Location Zones
101 Control Cabin - Left
102 Control Cabin - Right
B. Procedure
S 865-514
(1)
Make sure you did the Prepare For Input Parameter Test task.
S 735-515
(2)
Do this test of the cabin altitude > 10k ft signals:
(a)
Remove the connector D776 from the cabin pressure switch S128 at STA 192, WL 207, BL 0.
(b)
Set the portable tester to SUBFRAME 2, WORD 13.
(c)
Ground pin A of electrical connector D776.
(d)
Make sure the BIT 1 light on the portable tester is off.
(e)
Remove the ground from pin A on electrical connector D776.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. BEJ 113 ú
31-24-01
ú ú 20B Page 544 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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