Ricoh PRIPORT VT 2000 Series Service Manual page 284

9.12 MASTER DETECTING SENSOR ADJUSTMENT:
VT2300/VT2500
1. Remove the front cover.
2. Remove the master [A] from the drum. Then, confirm that the voltage
between TP101 and GND (CN103-5) is 0.9±0.1V when no master is on
the drum.
3. If the voltage is outside the specified range, adjust VR103 [B] on the main
control board [C].
4. Place a master on the drum.
NOTE: Make sure the master leading edge is clamped to the drum
clamper and that the master [A] is wrapped correctly on the drum.
5. Make sure that the voltage between TP101 and GND (CN103-5) on the
main control board is 3.0V or higher.
[C]
[B]
5-71
28 February '91
[A]