2-3
2. MAJOR UNIT REPLACEMENT
EM18-33011
7) Adjust the ribbon end sensor.
Use the following Ribbons; TTM-78 (Maker:
Fujicopian)
(1) Set the ribbon so that the ribbon end sensor
can detect the ribbon. Turn the power on.
(2) Turn the VR1 so that the voltage between Pin
1 (GND) and Pin 7 of CN12 is 3.0
–
0.2 V with
an oscilloscope.
(3) Turn the power off and mount the left side
cover and top cover.
(Revision Date: Feb. 10, 2000)
2.1 Replacing the PS Unit, I/F PC Board and CPU PC Board
8) Adjust the black mark sensor.
As the black mark sensor is adjusted by key entries in system mode, refer to page 6-38 for the
adjustment procedure.
9) Adjust the feed gap sensor.
As the feed gap sensor is adjusted by key entries in system mode, refer to page 6-39 for the adjustment
procedure.
CAUTION: Be careful when replacing the CPU PC board, since a non-resettable counter
(IC13) is installed on this board. (Refer to Section 6.2.1 Maintenance Counter
Printing.)
If this counter should be reset, replace IC13.
Fig. 2-4
Fig. 2-5
VR1
GND
Voltage
3.0
–
0.2 V
Range: 1 V / 0.2 m sec.
