Solenoids - Ricoh FT7770 Service Manual

Sensor PCBs
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4. Solenoids

To energize a solenoid, the main board supplies +3 volts at CN-1. When the
dc drive-board receives this signal at CN-2; it drops CN-3 to 0 volts to turn
on the solenoid.
Solenoid
Duplex Bottom Plate
Fork Gate
Inverter Gate
Inverter Roller
Junction Gate
Return Pinch Roller
Knocking
Pick-off
NOTE: The cleaning solenoid circuit is slightly different. See the section
on drum cleaning.
Connectors
CN203-B2
CN203-B4
CN203-B6
CN203-B8
CN203-A1
CN203-A3
CN203-A5
CN203-A7
Symbol
CN- 1
SOL-8 202-A10
202-B1l
SOL-7
SOL-4 202-A12
SOL-6 202-A1l
SOL-5 202-B10
SOL-9 202-B12
202-A5
SOL-3
SOL-2 202-B16
2-107
All connectors at the
main board,
CN-2
CN-3
302-A1 CN301-A1
302-B2
CN301-B2
302-A3 CN301-A3
302-A2 CN301-A2
302-B1
CN301-B1
302-B3 CN301-B3
304-B5
CN304-A12
304-B6
CN304-A13
30
April, '89