Ricoh FT4460, Service Manual, Page: 379 / 413

28 February 1989
- Actions -
1. If the main motor turns: Check the voltage at CN101-A13 on the system
control board while manually interrupting and uninterrupting the pulse
generator sensor (interrupted: 5V, not interrupted: 0V).
If the output does not change, replace the pulse generator sensor.
If the output changes, replace the main motor or the ac drive board.
2, 3, 4. If the main motor does not turn: Check CN304-B20 (main motor) on
I/O Control board after the start key is pressed.
24V: Replace the l/O control board or the system control board.
0V: Replace the main motor.
5. Connect the pulse generator sensor connector.
2.15 CODE #81 AND #82
- Phenomena -
SC #81: Jogger home position sensor output stays LOW
SC #82: Jogger home position sensor output stays HIGH
- Possible Causes -
1. Jogger home position sensor malfunction
2. Jogger motor malfunction
3. I/O control board malfunction
4. Jogger fence overload
5. Jogger wire slipped off
- Actions -
1. Check the voltage at CN304-B8 (jogger home position sensor) on the
l/O control board while manually interrupting and uninterrupting the
sensor (interrupted: 5V, not interrupted: 0V).
If the output does not change, replace the jogger home position sensor.
If the output changes, replace the jogger motor or the l/O control board.
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