Code #96 - Df Timing Pulse Error - Ricoh A151 Field Service Manual

2.14 CODE #96 — DF TIMING PULSE ERROR
- Definition -
The DF CPU does not receive a DF timing pulse within 100 milliseconds.
- Possible Causes -
Defective DF main board
•
Defective DF motor
•
Pulse generator sensor failure
•
Defective feed-in or transport mechanism
•
CN113 or CN117 on the DF main board or CN121 on the pulse
•
generator sensor is not correctly connected.
- Action -
Turn the main switch off and on and place some originals on the original
table.
Does the original start feeding when the Start key is pressed?
No Yes
Does the DF motor rotate?
No Yes
Check the feed-in or transport drive mechanism and repair or
replace the defective parts.
Check that CN117 on the DF main board is correctly connected.
Correct
Connect CN117.
Turn on DIP switches 1, 3 and 4 on the DF main board and turn on
the lift switch.
Check the voltage at CN117-1 on the DF main board.
0 volts
Replace the DF motor.
Replace the DF main board.
FSM
Incorrect
23 volts
6-47 A151/A152