Barco iD H250 Service Manual page 55

Image 5-43
Power box: left-rear view with mains connector
This universal 12V power box is delivered as a complete unit in a metal shielded box. All the power supply electronics for the boards
are mounted inside this box. There is a CPLD containing the software for the power box. There is also a connector to provide the
power for the lamp power supplies (through the lamp filters).
The following voltages are generated:
• power supply for both LPS (lamp power supply)
• ++12V standby voltage
• +12V for active projector state without image projection
• +12VA for active projector state and image projection (to formatter)
Configuration
Image 5-44
Power box layout
The power box consists of three boards that are communicating through board to board connectors. For safety reasons, there are
insulating plates located between the boards and on top of the SMPS: these plates must always be present!
The three boards are:
• PFC (power factor connector)
• SMPS (switched mode power supply)
• controller board
board
PFC
R59770097 ID H250 / H500 15/05/2007
1 2 3
7 8 9
description
Generates a stable DC voltage for the SMPS
Generates the power for both LPS. Each LPS is protected by a fuse.
5. Electronic spares and servicing procedures
4 5
12
15 16 17 18
6
14
19
13
20
21
SMPS
CONTROLLER
PFC
51