SATO CL 408e - Manual (Page 84)

Page 4-10
Section 4. Electric Checks and Adjustments
SATO CL408e/CL412e Service Manual PN 9001078
Rev. B
4.6 Label Gap Adjustment
Additional equipment required: TP Test Module
Digital Multimeter
STEP PROCEDURE
Refer to Section 4.2 for access to main PCB
1.Turn VR4 (GAP) potentiometer on the main PCB all the way to the
left.
2.Refer to Section 4. 3.
Set the digital multimeter to DC voltage measurement mode.
Attach the connector from the TP Test Module to the test port on the
main PCB. Note correct positioning of connector. Nibs on the connector
are placed down in the receptacle on the PCB in the forward position.
Set the dial to 5.
3.Connect (+) probe of the multimeter to Sig+ and (-) probe to pin
GND.
4.For Low level (Label Gap part with backing only) adjustment, put label
gap part in the sensor. Then adjust the electrical level with VR4 on the
main PCB so that it will measure less than 0.5 V.
5.For High level (paper part) adjustment, put paper part in the sensor
and check the electrical level. If the level difference is +1.0 V more
than the Low level, it is acceptable. If it is lower than 1.0V repeat
STEPS 4 & 5 and readjust VR4.
6.Standard values: Low level (gap): below 0. 5 V
High level (paper part): Low level +1.0 V 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