Gap Sensor Sensitivity; Gap Sensor Sensitivity (Alternate) - SATO D508 Service Manual

Unit 5: Adjustment Procedures

GAP SENSOR SENSITIVITY

1 Open the Top Cover and remove the front cover.
2 Turn the VR3 potentiometer fully counter-clockwise.
NOTE: Refer to Figure 5-2 for visual assistance in performing this procedure.
3 Connect the Test Module to the test connector on the printer's test panel.
NOTE: Use of the Test Module on this printer also requires the use of a
connector adapter cable that should also be purchased with the module.
4 Connect the negative multimeter ground probe to the pin identified as GND on the test
module.
5 Connect the multimeter positive probe to the pin identified as SIG on the test module.
6 Set the multimeter to DC Voltage mode and turn the test module dial to position 3.
7 Physically place the media's reference point into the sensor.
8 Adjust the VR3 potentiometer until the multimeter displays a value of +0.5 volts or less.
9 Physically move the media so that its printable surface is over the sensor.
10 Confirm the voltage displayed on the multimeter is now +1.0 volts or greater.
11 Repeat steps 7 through 10 until a acceptable sensitivity level is established.

GAP SENSOR SENSITIVITY (ALTERNATE)

CAUTION: Care should be taken not to short the pins on the test connector damage to the
PCB board could occur if the pins are shorted.
1 Open the Top Cover and remove the front cover.
2 Turn the VR3 potentiometer fully counter-clockwise.
3 Connect an insulated negative multimeter ground probe to pin 3 (GND) on the test
connector.
4 Connect an insulated positive multimeter positive probe to pin 1 on the test connector.
5 Set the multimeter to DC Voltage mode.
6 Physically place the media's reference point or gap into the sensor.
7 Adjust the VR3 potentiometer until the multimeter displays a value of +0.5 volts or less.
8 Physically move the media so that its printable surface is over the sensor.
9 Confirm the voltage displayed on the multimeter is now +1.0 volts or greater.
10 Repeat steps 7 through 10 until an acceptable sensitivity level is established.
11 Repeat steps 7 through 10 until a acceptable sensitivity level is established.
SATO D508/D512 Service Manual Page 5-9