Barco service bulletin
Serial Number: Info-T 787
Date: 21/11/2008
Product: Galaxy NH-12 ; NH-12
Priority code*: B
A.
”Must” modification, Barco will provide the necessary components to perform this modification
at no charge.
B.
Improves the reliability of the product.
C.
Improves the general working conditions of t he pr odu ct.
D.
For information only.
1. (GALAXY) NH-12: MAINS SWITCH CAN TRIP
AUTOM ATICALLY
1.1 Problem description
What happens?
It can happen that the mains switch of the projector trips automatically, i.e. the projectors
mains switch automatically switches to the off state.
Description of the problem
Badcontactofthecablesocketsofthemainsunitcausesanincreaseofheatdissipation,
which causes the thermal fuse to be activated and the projector to switch off.
Projector types involved
The following projector types suffer from the problem
Type
Product number
Galaxy NH-12
R9040400
NH-12 R9010610
Wires involved
The wires that had the Panduit connectors and that are critical are the following:
Article number Description Quantity
Z3472016
mains switch to mains filter
2
Z3472017
mains filter to LPS
2
Z3472029
mains input to mains switch
2
Other wires also have the Panduit connectors but a re less critical:
Article number Description Quantity
Z3472018
mains filter to fuses
2
Z3472019
fuses to powerbox
2
Z3472050
mains input to mains pulse filter
(R765424)
2
Barco nv Avionics and Simulation Division
Noordlaan 5, B-8520 Kuurne
www.barco.com
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Barco service bulletin
1.2 Problem solution
Solution in the factory
The s olution of the problem is to replace the cable sockets of the ma ins input.
The good cable sockets can be distinguished from the bad ones by their c olor:
• transparent blue, showing the print AMP: these are the good cables sockets
• full blue, showing the print Panduit: these cable sockets can cause the problem
Image 1-1
Cable so cket Panduit
Image 1-2
cable sock et AMP (Tyco)
Solution in the field
It is possible to adjust the Panduit cable sockets with a pair of pliers: pinch the cable socket
so that the s lot in which the male plug slides, becomes more narrow (dimension x on im-
age 1-4). This will insure good contact between the female cable socket and the male plug.
Image 1-3
Pinching the cable socket with a pair of pliers
InfoT: Info-T 787 Page 2 of 4
Barco service bulletin
Image 1-4
Pinched cable socket
How to correct the cable sockets?
1. Unscrew the right front foot of the projector (or remove it completely)
Image 1-5
Remove the right front foot (see left arrow)
2. At the bottom of the projector, remove the three screws fixing the mains input assembly.
See image 1-5.
3. Unplug the wires
4. Take out the mains input assembly
5. Correct the cable sockets of the following wires:
- Z3472029: wire from the mains input to the mains switch
- Z3472016: wire from the mains switch to the mains filter
- Z3472017: wire from the mains filter to the L PS
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InfoT: Info-T 787
Barco service bulletin
MAINS INPUT
MAINS INPUT MAINS FILTER LPS
R765161
2x Z3472029 2x Z3472016 2x Z3472017
Image 1-6
Z3472029
Z3472016
Z3472017
to LPS
Image 1-7
Caution:After correction, the cable sockets must be plugged in w ell.
6. Put the mains input assembly in the correct position
7. Plug in the wires that have been disconnected in step 3.
8. Fix the mains switch assembly with the three fixing screws.
9. Screw in the right front foot of the projector.
InfoT: Info-T 787
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