SATO TG308, Service Manual

Page: 167 / 252

Section 6: Checks and Adjustment Procedures
TG3 Series Service Manual
Page 6-29
6.10 ADJUSTING CUTTER SENSORS (Cont’d)
To calibrate the Edge sensor level with the potentiometer
NOTE:
Measure the sensor level directly in the
Maintenance
mode only. This is because the sensor
protection (measurement to prolong operating life) is enabled in the
ONLINE
mode.
5.
The potentiometer of cutter unit is used for adjusting the cutter sensor. Set the multimeter to direct-current
voltage mode. Connect
[+]
probe to
EDGE
check pin on the cutter sensor PCB (upper) and
[ - ]
probe to
SG
check pin.
6.
To adjust low level (R-corner/ without tag), ensure no tag is loaded onto the cutter sensor and then use the
microdriver to adjust the
VR3
potentiometer until the sensor level is less than or same as
+0.5V
on the
multimeter.
7.
To adjust high level (tag area), load the tag to the
Edge sensor.
8.
Use the microdriver to adjust the
VR3
potentiometer until the sensor level is within the range of more than
or same as
+2.0V
and less than or same as
+5.0V
.
9.
If you are having difficulty adjusting the sensor properly, clean the sensor and check the connector connec-
tion. If the problem persists, replace the sensor.
10.
Turn off the power and install the cutter unit.
Table of normal performance values:
Low level (without media/ R-corner area): +0.5V or below
High level (tag area): +2.0V >= tag area <= +5.0V
VR3
SG
EDGE