Laser Driver Principle And Error Codes - Barco F90 Service Manual

5. GP6 system functional description
5.7

Laser driver Principle and error codes

There are two identical laser driver PCB's, defined as Board 1 and Board 0, where Board 0 is the lower board and Board 1 is the
upper board.
There are also two identical laser clusters, defined as Cluster left and Cluster right, seen from the back side of the projector.
Each cluster again consists of six laser banks, defined as Bank0 to Bank5.
For monitoring the status/condition of the laser driver module, there are NTC's connected to each laser bank and on each driver
output on the laser driver boards. The software will monitor the data from this NTC's continuously and by an error, a failure message
will occur defining the error.
The NTC's on the Laser driver board are defines as "heatsink" in the error message string, and the NTC's on the laser banks is
defined as "bank" in the error message string.
The error message may appear in OSD as illustrated below.
Image 5-6
See also the error code/failure matrix, in the next page and the block diagram for an overview of the system.
Block schematic diagram for the Laser driver system.
0
0
0 1 2
0 1 2
Cluster Left Cluster Left
Image 5-7
Error Codes regarding the Laser drivers
#e20400 environment.laser.board1.bank0.errorinput
#e20400 environment.laser.board1.bank1.errorinput
24
1 2
1 2
3 4 5
3 4 5
Cluster right Cluster right
Error Message
3 4 5
3 4 5
Possible root cause / Components to be replaced
Laser driver board Laser driver board
Upper (1) Upper (1)
Laser driver board Laser driver board
Lower (0) Lower (0)
Laser cluster left
Laser cluster left
723–0016 F90 01/12/2017