*
P310 standby power management panel.
Circuit breakers control power to these CSS core components:
*
Cabin system management unit (CSMU)
*
Cabin system control panel (CSCP)
*
Cabin area control panels (CACPs)
*
Cabin printer
*
Passenger address/cabin interphone (PA/CI) controller.
P110 Left Power Management Panel
The CAB SYS MGMT UNIT circuit breaker connects 115v ac power to the CSMU and the CSCP.
P210 Right Power Management Panel
The AREA CONTROL PANELS circuit breaker connects 115v ac power to all CACPs.
The CABIN PRINTER circuit breaker connects 115v ac power to the cabin printer.
P310 Standby Power Management Panel
These circuit breakers connect 28v dc to the PA/CI controller:
*
PAX ADRS CTRL PRI
*
PAX ADRS CTRL SEC
*
CAB INTPH PRI
*
CAB INTPH SEC.
EFFECTIVITY BEJ ALL 23-39-01
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CSS GENERAL -POWER INTERFACE
EFFECTIVITY BEJ ALL 23-39-01
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CSS GENERAL -POWER INTERFACE -ZONE 1
General
Components on the left, right, and standby power management panels control power to these zone 1 LRUs:
*
Left, center, and right overhead electronics units (OEUs)
*
Zone management unit (ZMU) 1
*
Speaker drive modules (SDMs).
Components
The P110 left power management panel has these components:
*
OEU ZONE1 MAIN BUS circuit breaker
*
OEU ZONE1 XFER BUS circuit breaker
*
ZONE MGMT 1 circuit breaker.
The P210 right power management panel has the PAX MASTER CALL LT circuit breaker.
The P310 standby power management panel has these components:
*
PA DIR ACCESS circuit breaker
*
CAB INTPH ZMUS circuit breaker
*
SDM COL 1 circuit breaker.
Overhead Electronics Unit Power
The OEU ZONE 1 MAIN and OEU ZONE 1 XFER circuit breakers connect 115v ac power to the left, center and right OEUs.
Zone Management Unit Power
These circuit breakers connect power to ZMU 1:
*
ZONE MGMT UNIT 1 -115v ac
*
PA DIR ACCESS -28v dc
*
CAB INTPH ZMUS -28v dc
*
PAX MASTER CALL LT -28v dc.
Speaker Drive Module Power
The SDM COL 1 circuit breaker connects 28v dc to all SDMs in zone 1.
EFFECTIVITY BEJ ALL 23-39-01
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777 AIRCRAFT MAINTENANCE MANUAL
CSS GENERAL -POWER INTERFACE -ZONE 1
EFFECTIVITY BEJ ALL 23-39-01
Page 35
D633W101-BEJ Jan 05/2002
CSS GENERAL -POWER INTERFACE -ZONE 2
General
Components on the right and standby power management panels control power to these zone 2 LRUs:
*
Left, center, and right overhead electronics units (OEUs)
*
Zone management (ZMU) unit 2
*
Speaker drive modules (SDMs).
Components
The P210 right power management panel has these components:
*
OEU ZONE2 LEFT MAIN BUS circuit breaker
*
OEU ZONE2 CENTER MAIN BUS circuit breaker
*
OEU ZONE2 RIGHT MAIN BUS circuit breaker
*
OEU ZONE2 XFER BUS circuit breaker
*
ZONE MGMT UNIT 2 circuit breaker
*
PAX MASTER CALL LT circuit breaker.
The P310 standby power management panel has these components:
*
PA DIR ACCESS circuit breaker
*
CAB INTPH ZMUS circuit breaker
*
SDM COL 2 circuit breaker.
Overhead Electronics Unit Power
These circuit breakers connect 115v ac to the OEUs:
*
OEU ZONE2 LEFT MAIN BUS to the left column of OEUs
*
OEU ZONE2 CENTER MAIN BUS to the center column of OEUs
*
OEU ZONE2 RIGHT MAIN BUS to the right column of OEUs
*
OEU ZONE2 XFER BUS to all OEUs.
Zone Management Unit Power
These circuit breakers connect power to ZMU 2:
*
ZONE MGMT UNIT 2 -115v ac
*
PAX MASTER CALL LT -28v dc
*
PA DIR ACCESS -28v dc
*
CAB INTPH ZMUS -28v dc.
Speaker Drive Module Power
The SDM COL 2 circuit breaker connects 28v dc to all SDMs in zone 2.
EFFECTIVITY BEJ ALL 23-39-01
Page 36
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777 AIRCRAFT MAINTENANCE MANUAL
CSS GENERAL -POWER INTERFACE -ZONE 2
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