| | | | Data |
| AMM | | | Transfer |
|Chapter| | | Time (in |
|Section| Component | Software | Minutes) |
................................................................................ |23-38 |Digital Interface Unit |Airshow DB *[5] | 3 to 15 | | |(Passenger Flight Information | | | | |Display System) | | | ................................................................................ |31-35 |Optical Quick Access Recorder | OPS *[6] | 30 | | |(Teledyne) | | | ................................................................................ |31-35 |Data Management Unit (DMU) |ACMS OPS | 5 to 16 | ................................................................................ |31-61 |IDS EFIS/EICAS Interface Unit |OPS | 10 to 12 | | |(EIU) | | | ................................................................................ |31-61 |IDS Integrated Display Unit |OPS | 12 to 16 | | |(DU) | | | ................................................................................ |34-61 |Flight Management Computer (FMC) |OPS | 6 to 7 | | | |Nav DB | 24 to 30 | ................................................................................ |45-10 |Central Maintenance Computer (CMC)|OPS | 15 to 20 | | | |Airline Data Base | 1 to 3 | 2.......…..................................…........................…..........1
*[1] From data loader to cabin management unit (CMU).
*[2] From CMU to component.
*[3] From data loader to passenger service controller (PSC).
*[4] From PSC to component.
*[5] Software is installed from disk or CD-ROM.
*[6] Software is installed from disk drive at component front panel.
(4) Data Loaders
(a) This procedure supplies general information about data load
equipment. You can find the data load equipment for the
airplane configuration in the Flight Management Computer System
(34-61).
(b) A data loader is a disk drive that connects to a component
through interface wiring. Software disks are inserted into the
disk drive and the data is transferred to the component.
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(5)
(6)
(7)
A
747-400
MAINTENANCE MANUAL
(c)
There are two types of data loaders: airborne data loaders and portable data loaders.
(d)
An airborne data loader is a data loader that is installed in the flight compartment on the P11 panel.
(e)
A portable data loader (PDL) is equipment that is moved to the airplane to install software. The PDL is removed from the airplane when the task is complete.
(f)
The data loader control panel is installed on the first observer's console panel, P11. Sometimes the data loader control panel is installed on the aft end of the P11 panel in the coat stowage area. 1) There is interface wiring between the data loader control
panel and the components that can receive software installations from the flight compartment. The data loader control panel has a switch position for each component that can receive software. INOP labels are attached on switch positions that are not available for software installation.
(g)
Figure 201 shows examples of data loader control panels and
airborne data loaders.Alternative Software Installation
(a)
Usually software is installed with a data loader in the flight compartment. But some components have a disk drive, CD-ROM drive, PDL connector, or PCMCIA (personal computer memory card international association) interface for software installation at the front of the component.
Airborne Data Loaders (ADL)
(a)
This procedure supplies examples for operation of these ADLs: 1) Allied Signal (Sundstrand) 2) Teledyne
Portable Data Loaders (PDL)
(a)
Somes airplanes do not have an airborne data loader. If there is no airborne data loader, then there is an interface connector for a portable data loader. The connector will be near the data loader control panel. The circuit breaker that supplies power for the PDL must be open when a PDL is connected or disconnected.
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