SATO M-10e TT/DT Printers Service Manual
PN 900109
Rev. A
4-6
Section 4. Electrial Checks and Adjustments
4.5 Adjustment of Eye-Mark Sensor
STEP PROCEDURE
Refer to Section 4.2 and remove the left side cover for access to the main circuit board.
1. Refer to illustrations and charts on pages 4-3, 4-4 and 4-7.
Turn VR5 (IM) potentiometer on the main circuit board all the way to the left, until you
hear the CLICK sound.
2. Set the digital multimeter to DC voltage measurement mode. Attach the connector from
the TP Test Module to the test port on the main circuit board. Note the correct positioning
of the connector. Nibs on the connector are placed down in the receptacle on the circuit
board in the forward position. Set the dial of the TP Test Module to 4.
3. Connect (+) probe of the multimeter to Sig+ and (-) probe to pin GND.
4. Switch ON the power of the printer.
5. For Low level (no “Eye-Mark” part) adjustment, put paper part in the sensor. Then adjust
the electrical level with VR5 on the main circuit board so that it will measure less than
0.5V.
6. For High level (Eye-Mark” part) adjustment, put paper part with the “Eye-Mark” part in
the sensor and check the electrical level. If the level difference is +1.0V more than the
Low level, it is acceptable. If not, return to STEP 5 and readjust VR5.
7. Standard values: Low level (no “Eye-Mark” part): +0.5V or less.
High level (“Eye-Mark”): Low level +1.0V or higher. If these values
do not result, try the following:
a) Repeat the process
b) Clean the sensor
c) Verify sensor is operational
d) Replace labels with higher quality labels.
e) Perform factory reset.
Additional equipment required: TP Test Module
Digital Multimeter
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