LASER UNIT
SM 3-43 B234/B235/B236/D101/D102/D103
Replacement
Adjustment
3.6.2 LD UNIT
WARNING
Turn off the main power switch and unplug the machine before attempting
this procedure. Laser beams can seriously damage the eyes.
NOTE: To avoid damaging the board with static electricity, never touch the printed
circuit board.
1. Exposure glass (3.5.1).
2. Lens block cover and lens block. (3.5.2)
3. Ground wire [A] ( x 1).
4. Flat film connector guide [B] ( x 3, x 2).
5. LD cover [C] ( x 4, x 1).
6. LD unit [D] ( x 2, x 4).
• Four spacers, each of a different colour, are placed under the LD unit in the
factory in order to do a fine positioning adjustment on the LD unit position.
Before you remove the LD unit, take a careful note of where these spacers
are. When replacing the LD unit, these spacers must be in exactly the same
position.
• Be sure to remove the mylar from the underside of the old LD unit and attach
it to the new one.
B234R102A.WMF
B234R102B.WMF
[A]
[B]
[C]
[D]
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