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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757 MAINTENANCE MANUAL
 S 865-387
 (12) Open this P6 panel circuit breaker:
 (a)  6D10, INV PWR TRU
 S 865-388
 (13)
 Make sure the EICAS message, STBY INVERTER, shows on the lower display.

 S 865-389

 (14)
 Close this P6 panel circuit breaker:

 (a)  6D10, INV PWR TRU
 S 215-390
 (15)
 Make sure the EICAS message, STBY INVERTER, stays shown on the lower display.

 S 915-391

 (16)
 Do the Maintenance Message Erase procedure (AMM 31-41-00/201).

 S 215-392

 (17)
 Make sure the EICAS message, STBY INVERTER, does not show on the lower display.

 E.  AIRPLANES WITH 30-MINUTE STANDBY POWER; Do the Operational Test of Battery Charger Failure Detection Circuit
 S 715-395
 (1) Do the Main Battery Charger Failure Detection Circuit as follows:
 (a)  
Make sure the lower EICAS display is in the ECS/MSG mode. Push the ECS MSG switch on the P61 panel, if necessary.

 (b)  
Open this P34 panel circuit breaker:
 1) 34A16, MN/APU BAT CHGR DET ENABLE

 (c)  
Open this P6 panel circuit breaker:
 1) 6A4, BAT CUR MON PWR

 (d)  
Approximately 10 seconds after the circuit breakers opened, make sure the EICAS message, MAIN BAT CHGR, shows on the lower display.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 (e)  
Close this P34 panel circuit breaker:
 1) 34A16, MN/APU BAT CHGR DET ENABLE

 (f)  
Close this P6 panel circuit breaker:
 1) 6A4, BAT CUR MON PWR

 (g)  
Push the AUTO EVENT READ switch on the P61 panel and make sure the AUTO EVENT page shows on the lower display.

 (h)  
Do the Maintenance Message Erase procedure (AMM 31-41-00/201).

 (i)  
Make sure the EICAS message, MAIN BAT CHGR, stays shown on the lower display and cannot be erased.

 NOTE: The message can blink when erase is tried, but must
____
 remain shown.

 (j)  
Turn the STBY POWER switch on the P5 panel to the BAT position and permit the switch to stay in this position for at least 5 seconds.

 (k)  
Turn the STBY POWER switch on the P5 panel to the AUTO position.

 (l)  
Do the Maintenance Message Erase procedure (AMM 31-41-00/201).

 (m)  
Make sure the EICAS message, MAIN BAT CHGR, does not show on the upper display.

 F.  AIRPLANES WITH EXTENDED STANDBY POWER; Do the Operational Test of the Main and APU Battery Charger Failure Detection Circuits
 S 715-396
 (1)  Do the Main and APU Battery Charger Failure Detection Circuits test as follows:
 (a)  
Make sure the lower EICAS display is in the ECS/MSG mode. Push the ECS MSG switch on the P61 panel, if necessary.

 (b)  
Open this P34 panel circuit breaker:
 1) 34A16, MN/APU BAT CHGR DET ENABLE

 (c)  
Open this P6 panel circuit breaker:
 1) 6A4, BAT CUR MON PWR

 (d)  
Approximately 10 seconds after the circuit breakers opened, make sure the EICAS messages, MAIN BAT CHGR and APU BAT CHGR, show on the lower display.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 24-30-00
 ALL  ú ú 04 Page 505 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 (e)  
Close this P34 panel circuit breaker: 1) 34A16, MN/APU BAT CHGR DET ENABLE

 (f)  
Close this P6 panel circuit breaker: 1) 6A4, BAT CUR MON PWR

 (g)  
Push the AUTO EVENT READ switch on the P61 panel and make sure the AUTO EVENT page shows on the lower display.
　
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