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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 745-212
(2) Do these steps for all seven (7) positions of the test selector on the pack standby controller:
NOTE: Position "1" through position "5" detects internal faults
____ in the standby pack temperature controller. These faults include power supply problems and current output problems.
Position "6" detects out of range faults in the pack temperature sensor.
Position "7" detects out of range faults in the compressor discharge temperature sensor.
(a)
Turn the test selector to the applicable position.
(b)
Push the test selector.
(c)
Make sure the GO lights come on.
(d)
If a NO-GO light comes on, then replace the applicable unit.
S 745-213
(3)
Turn the test selector to position 1.
F.
Put the airplane back to its usual position:
S 415-192
(1)
Close the access door for the main equipment center, 119BL (AMM 06-41-00/201).
S 865-160
(2)
Move the L and R PACK selectors on the P5 panel to OFF.
(a)
Make sure the L (R) PACK OFF light comes on.
S 865-161
(3) Remove the electrical power if it is not necessary (AMM 24-22-00/201).
TASK 21-51-00-715-158
3. Operational Test - Pack Temperature Control (Fig. 501, 502)___________________________________________
A. General
(1)
This task has the steps to make sure the ram air doors and the temperature control valve operate correctly.
B.
References
(1)
AMM 24-22-00/201, Electric Power - Control
(2)
AMM 27-61-00/201, Spoiler/Speedbreak Control System
(3)
AMM 32-09-02/201, Air/Ground Relays
C.
Prepare for the test:
S 865-391
(1) GUN 006-999;
Make sure these circuit breakers are closed:
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21-51-00
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ú ú ú 13.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 509Sep 28/02
A
757 MAINTENANCE MANUAL
(a) Overhead Circuit Breaker Panel, P11:
1) 11A13, AIR COND PACK LEFT AUTO CONT
2) 11A14, AIR COND PACK LEFT FLOW CONT
3) 11A15, AIR COND RIGHT STANDBY CONT
4) 11A26, AIR COND LEFT STANDBY CONT
5) 11A28, AIR COND PACK RIGHT AUTO CONT
6) 11A29, AIR COND PACK RIGHT FLOW CONT
7) 11M11, LEFT PACK AUTO POWER
8) 11M15, RIGHT PACK STANDBY POWER
9) 11M19, RIGHT PACK AUTO POWER
10) 11M24, LEFT PACK STANDBY POWER
S 865-183
(2)
GUN 001-005;
Make sure these circuit breakers are closed:
(a)
Overhead Circuit Breaker Panel, P11:
1) 11M10, LEFT PACK AUTO POWER
2) 11M11, LEFT PACK AUTO CONT
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