2) 1 SOURCE OFF
3) 1 GEN OFF BUS
4) 2 TRANSFER BUS OFF
5) 2 SOURCE OFF
G. Bus Tie Breaker and Generator Control Breaker Check
SUBTASK 24-21-00-710-007
(1) Do the check as follows:
(a) Set the GEN 1 switch to the OFF position.
(b) Make sure these lights come on:
1) 1 GEN OFF BUS
2) 1 SOURCE OFF
(c) Make sure these lights stay off:
1) 1 TRANSFER BUS OFF
2) 2 TRANSFER BUS OFF
3) 2 GEN OFF BUS
4) 2 SOURCE OFF
(d) Set the BUS TRANS switch to the OFF position.
(e) Make sure this light comes on:
1) 1 TRANSFER BUS OFF
(f) Make sure these lights stay off:
1) 2 TRANSFER BUS OFF
2) 2 GEN OFF BUS
3) 2 SOURCE OFF
(g) Set the GEN 1 switch to the ON position.
(h) Make sure these lights go off:
1) 1 TRANSFER BUS OFF
2) 1 GEN OFF BUS
3) 1 SOURCE OFF
(i) Set the BUS TRANS switch to the AUTO position.
(j) Set the GEN 2 switch to the OFF position.
(k) Make sure these lights come on:
1) 2 GEN OFF BUS
2) 2 SOURCE OFF
(l) Make sure these lights stay off:
1) 2 TRANSFER BUS OFF
2) 1 TRANSFER BUS OFF
3) 1 GEN OFF BUS
4) 1 SOURCE OFF
(m) Set the BUS TRANS switch to the OFF position.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-00
Page 505
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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