2-5
2. MAIN UNIT REPLACEMENT
EO18-33002A
■
Adjusting the Media Sensor Voltage
After replacing the driver PC board, be sure to adjust the sensor voltage using the procedure below.
When adjusting the black mark sensor, place IJ16 tag paper (OSAKA SEALING) so that the sensor
can sense the print area of the tag paper. For the feed gap sensor adjustment, place IJKS labels
(OSAKA SEALING).
(1) Connect the printer to a PC and turn the power on for both.
(2) Adjust the media sensor voltage.
■
Black Mark Sensor
Fully turn the feed gap sensor adjustment knob on the rear of the printer counterclockwise.
Turn the black mark sensor adjustment knob so that the notch stops at a 180 degree angle.
Turn the VR3 on the driver PC board in either direction until all the black mark sensor lamps are
lit. If the lamps do not light, turn the black mark sensor adjustment knob within the angle range
of 150 degree to 210 degree, and retry.
■
Feed Gap Sensor
Fully turn the black mark sensor adjustment knob on the rear of the printer counterclockwise.
Turn the feed gap sensor adjustment knob so that the notch stops at a 90 degree angle.
Turn the VR4 on the driver PC board in either direction until the topmost feed gap sensor
lamp lights. If the lamp does not light, turn the feed gap sensor adjustment knob within the
angle range of 60 degree to 120 degree, and retry.
NOTE:
Adjust the knobs so that they stop in the mid-range with all the lamps lit.
(3) After completing this procedure, turn the power off.
2.3 REPLACING THE DRIVER PC BOARD
ADJUSTMENT
GAP MARKER
VR4 VR3
IC22
CN10
IC23
IC24
CN11
TPGI
TPGR
B-CX DRIVER PWB
FMJD0004802
CN9
2 1
CN8
2 1.
3
3
Feed Gap Sensor Lamps
Black Mark Sensor Lamps
Green
Red
Notch
Black Mark Sensor Adjustment Knob
Feed Gap Sensor Adjustment Knob
Fig. 2-5
Driver PC Board
Rear of the Printer
Fig. 2-6
Fig. 2-7
150
°
210
°
180
°
120
°
60
°
90
°
GAP
GAP
MARK
MARK
VR3
VR4
MARK
GAP