(l)
Open the CENTER BUS PWR circuit breaker (6C09) on the P6 panel.
(m)
Measure 0 |3 volts dc at terminal 1 of the FLT CONT CMPTR SERVO C circuit breaker (11E21 or 11E20) on P11.
(n)
Measure 0 +/- 5 volts AC at terminal 1 of the FLT CONT CMPTR PWR C circuit breaker (11E20 or 11E19) on P11 .
(o)
Push the R BUS TIE switch (P5) to the ISLN position.
(p)
Push the R GEN CONT switch (P5) to the OFF position.
(q)
Make sure the R BUS OFF light (P5) is on.
(r)
Make sure the L BUS OFF light (P5) is off.
(s)
Close this circuit breaker on the P11 panel, CAT III BUS ISOL L (11R3).
(t)
Measure 28 |3 volts dc at terminal 1 of the FLT CONT CMPTR SERVO C circuit breaker (11E21 or 11E20) on P11.
(u)
Measure 115 +/- 5 volts AC at terminal 1 of the FLT CONT CMPTR PWR C circuit breaker (11E20 or 11E19) on P11 .
(v)
Open this circuit breaker on the P6 panel, CENTER BUS CONT (6G06).
(w)
Measure 0 |3 volts dc at terminal 1 of the FLT CONT CMPTR SERVO C circuit breaker (11E21 or 11E20) on P11.
(x)
Close the CENTER BUS CONT circuit breaker (6G6) on the P6 panel.
(y)
Open the CAT III BUS ISOL L circuit breaker (11R3) on P11 panel.
(z)
Push the R GEN CONT switch (P5) to the ON position.
(aa) Push the L BUS TIE switch (P5) to the ISLN position.
(ab) Push the L GEN CONT switch (P5) to the OFF position.
(ac) Make sure the R BUS TIE switch (P5) is in the ISLN position.
(ad) Make sure the L BUS OFF light (P5) is on.
(ae) Make sure the R BUS OFF light (P5) is off.
(af) Close the CAT III BUS ISOL R circuit breaker (11R30) on the P11
panel. (ag) Measure 28 |3 volts dc at terminal 1 of the FLT CONT CMPTR SERVO C circuit breaker (11E21 or 11E20) on P11.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-22-00
ALL ú ú 04 Page 523 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(ah) Open the CAT III BUS ISOL R circuit breaker (11R30) in the P11 panel.
(ai) Close the CAT III BUS ISOL BAT circuit breaker (11D6) on the P11 panel.
(aj) Measure 28 |3 volts dc at terminal 1 of the FLT CONT CMPTR
SERVO C circuit breaker (11E21 or 11E20) on P11.
(ak) Push the L GEN CONT switch (P5) to the ON position.
(al) Push the R GEN CONT switch (P5) to the OFF position.
(am) Make sure the R BUS OFF light (P5) is on.
(an) Make sure the L BUS OFF light (P5) is off.
(ao) Measure 28 |3 volts dc at terminal 1 of the FLT CONT CMPTR
SERVO C circuit breaker (11E21 or 11E20) on P11.
(ap) Push the R BUS TIE switch (P5) to the AUTO position.
(aq) Push the R GEN CONT switch (P5) to the ON position.
(ar) Push the L GEN CONT switch (P5) to the OFF position.
(as) Make sure the L BUS OFF light (P5) is on.
(at) Make sure the R BUS OFF light (P5) is off.
(au) Measure 28 |3 volts dc at terminal 1 of the FLT CONT CMPTR
SERVO C circuit breaker (11E21 or 11E20) on P11.
(av) Open the CAT III BUS ISOL BAT (11D6) breaker.
(aw) Set the switch on the adapter for the Isolation Request relay
to the OFF position.
(ax) Remove the integrated drive generator power from the main ac buses (AMM 24-22-00/201).
WARNING:_______ DO NOT OPEN THE MAIN POWER DISTRIBUTION PANEL P6 WHEN
ELECTRICAL POWER IS ON THE AIRPLANE. HIGH VOLTAGE IN THE
PANEL CAN CAUSE INJURY.
(ay) Open the P6 panel.
(az) Remove the adapter for the ISOLATION REQUES RELAY, K122, from
the P6 panel. (ba) Install the ISOLATION REQUEST RELAY, K122, in the P6 panel. (bb) Close the P6 panel. (bc) Remove the DO-NOT-CLOSE tags and close these P11 panel circuit
breakers:
1) 11D6, CAT III BUS ISOL BAT
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 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 1(81)
