BX2 MAINTENANCE MANUAL
REPAIR PROCEDURE
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(3) Adjustment procedure (BX51/52)
1) Turn on the power, and then turn the
knob “B” (P.18) to the maximum level.
2) In step 1), turn the trimmer VR52 (P.18)
on the power board to adjust the lamp
output voltage to 12.2V, using the digital
multimeter.
3) Turn on the light preset switch.
4) Set the light preset voltage to 9V by
turning the VR101.
5) In step 4), turn the trimmer VR103 so that
nineth LED from the bottom will light.
6) Apply solvent-based adhesive(OT1026) to
several points around all trimmers except
VR101 to avoid turning the trimmers.
(4) Setup for adjustment (BX41/45)
1) Remove the back panel of microscope
frame.
Screw: CUKSK3X8SA 7 pcs.
Note: In case of disassembly from the frame,
after removing the screws, separate the
back panel from wrench holder and take
off the panel while shifting it down.
2) Remove the control board . (Refer to the
next page.)
Screw: CUTB3X6SA 2 pcs.
3) Prepare for adjustment as shown in the
left figure.
Control board
This LED
should be lit.
VR103
VR101
Light preset switch
Connect it to the
connector CN51 on
power board.
Connect it to
the relay
board. (only
BX51/52TRF)
Connect it to
rheostat ass'y.
(A012)
Standard
DC12.2V+/-0.1V
5.9
Power board
CN21
Lamp voltage
output terminal
Install U-LS30-4 on the frame
Digital multimeter (RMS type)
Standard
DC9V+/-0.1V
