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7. Electronic parts and servicing procedures
Schematic overview
POWERBOX
PFC
controller
SMPS
++12V
+12V
PB ok
ERR
+12V
FANS
PWR output
++12V
I2C
ctrl
pulse fan
230V
MAINS IN
+380 VM
to X-fan
temp.
sensor
Image 7-20
Power box: block diagram
Con
fi
guration
PFC
CONTROLLER
SMPS
1
2
3
4
5
6
8
7
9
13
14
19
20
17 18
12
15
16
21
Image 7-21
Power box: con
fi
guration
The power box consists of three boards that are communicating through board to board connectors. For safety reasons, insulating
plates have been mounted between the boards and on top of the SMPS: these plates must always be present!
The three boards are:
46
R59770141 GALAXY NH-12 20/02/2008
Содержание Galaxy NH-12
Страница 1: ...Galaxy NH 12 Service manual R9040400 R59770141 00 20 02 2008...
Страница 4: ......
Страница 12: ...1 Safety guidelines 8 R59770141 GALAXY NH 12 20 02 2008...
Страница 42: ...6 Projector layout 38 R59770141 GALAXY NH 12 20 02 2008...
Страница 142: ...8 Optical parts and servicing procedures 138 R59770141 GALAXY NH 12 20 02 2008...
Страница 146: ...9 Mechanical parts and servicing procedures...