Sensitivity Adjustment For The Pz Paper Edge Sensor (Pz) - Konica Minolta 7155 Service Manual

OTHER ADJUSTMENT
[27-2] Sensitivity adjustment for the PZ
paper edge sensor (PZ)
1. Tool
• Screwdriver (Phillips)
• Precision driver (Phillips)
2. Adjustment method
a. Preparation
Step
Check that PZ is connected to the main
1
body.
b. Adjustment
Step
Loosen two screws in the lower part of
PZ rear cover, remove two screws in the
upper part, and then remove the rear
cover.
1
Screws
Screws (loosen)
Power on the main body.
2
MODEL
7155/7165 SERVICE HANDBOOK
Operation
Operation
Rear cover
MANUAL REVISED EDITION
Step Operation
Turn the volume fully clockwise and then
turn it back counterclockwise until the
LED corresponding to each volume
lights up.
PZ control board
(PZCB)
3
Relation between VR to adjust and
LED to check.
VR 1 → LED 2
VR 2 → LED 3
VR 3 → LED 4
VR 4 → LED 5
VR 5 → LED 6
Perform the procedure of step 3 for all
4
five volumes.
Power off the main body after complet-
5
ing the adjustment.
Reinstall the rear cover.
6
DATE PAGE
Apr. 2003
1-130-4
METHOD
REPLACEMENT