7-22 7 Service and Maitenance
2. Remove the rear panel and the table panels 1 of the analyzing unit.
3. Pull out the porcelain socket, the cooling fan of the optical module, the sensor and the
motor cable socket.
4. Unscrew the three screws fixing the light source assembly to remove it.
5. Unscrew the two screws fixing the dustproof cover and remove the plate.
Figure 7-5 Removing the Light Source Assembly
6. Use the fixture BA10-J12-01 (see Figure 7-6) to cover the filters and then unscrew the 8
screws fixing the filter by using the cross-head screwdriver. It is necessary to use the
fixture to protect the filters from being scratched. If you can not find the fixture on the spot,
handle carefully.
Figure 7-6 Fixure
7. Push the filter out with cotton swabs.
8. The corresponding relationship between the filter and the filter wheel installation hole
is :
Wavelength
（nm）
340
405
546
670
450
510
578
630
Hole
Position
1 2 3 4 5 6 7 8
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