24-30-00
ALL ú ú 04 Page 510 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(b) Make sure the bottom EICAS display is in the ECS MSG mode.
Push the ECS MSG switch on the EICAS MAINT panel on the right
side panel P61, if necessary.
(c) Make sure the EICAS message, T-R UNIT, does not show on the
bottom display.
(d) Push the ELEC HYD switch on the EICAS MAINT panel.
(e) Make sure these values are below L and R on the bottom EICAS
display:
1) DC-V = 28 |5
2) DC-A = larger than 5
(f) Open this circuit breaker:
1) 6C23 or 32EE2, R TRU
(g) Make sure these values are below R on the bottom EICAS display
for 11 |5 seconds:
1) DC-V = 0 |1
2) DC-A = 0
(h) After 11 |5 seconds make sure these values are below R on the
bottom EICAS display:
1) DC-V = 28 |5
2) DC-A = 0
(i) Push the ECS MSG switch on the P61 panel.
(j) Make sure the EICAS message, T-R UNIT, shows on the bottom
display.
(k) Close this circuit breaker:
1) 6C23 OR 32EE2, R TRU
(l) Make sure the EICAS message, T-R UNIT, still shows on the
bottom display.
(m) Push the left BUS TIE switch on the P5 panel to the ISLN
position (out position).
(n) Make sure the amber ISLN light in the switch comes on.
(o) After 3 seconds (minimum), push the left BUS TIE switch on the
P5 panel to the AUTO position.
(p) Make sure the ISLN light in the switch goes off.
(q) Make sure the EICAS message, T-R UNIT, does not show on the
bottom display.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-30-00
ALL ú ú 05 Page 511 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(r)
Push the ELEC HYD switch on the EICAS MAINT panel.
(s)
Open this circuit breaker:
1) 6C17 OR 31EE2, L TRU
(t)
Make sure these values are below L on the bottom EICAS display: 1) DC-V = 0 |1 2) DC-A = 0
(u)
After 11 |5 seconds, make sure these values are below L on the bottom EICAS display: 1) DC-V = 28 |5 2) DC-A = 0
(v)
Push the ECS MSG switch on the EICAS MAINT panel.
(w)
Make sure the EICAS message, T-R UNIT, shows on the bottom display.
(x)
Close this circuit breaker:
1) 6C17 OR 31EE2, L TRU
(y)
Make sure the EICAS message, T-R UNIT, still shows on the bottom display.
(z)
Push the left BUS TIE switch on the P5 panel to the ISLN
position (out position).
(aa) Make sure the amber ISLN light in the switch comes on.
(ab) After 3 seconds (minimum), push the left BUS TIE switch on the
P5 panel to the AUTO position.
(ac) Make sure the ISLN light in the switch goes out.
(ad) Make sure the EICAS message, T-R UNIT, does not show on the
bottom display.
C. Put the Airplane Back To Its Usual Condition
S 445-137
(1)
Do the activation procedure for the spoilers if you did the
deactivation procedure (AMM 27-61-00/201).
(2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-138
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-30-00
ALL ú ú 05 Page 512 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
BATTERIES - DESCRIPTION AND OPERATION
_____________________________________
1. General_______
A. The battery system is composed of the main battery system and the APU battery system. System components include batteries, battery chargers, battery shunts, a battery current monitor, main battery charger disable relay, APU battery charger interlock relay, main battery relay, main battery transfer relay, DC under voltage sensing relay, main battery charger detection relay, and main/APU battery charger detection enable relay.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 电源 ELECTRICAL POWER 2(25)
