Canon PC921 Service Manual - Page 344
VI. ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS, Sensors and Solenoids
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CHAPTER 11 TROUBLESHOOTING VI. ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS A. Sensors and Solenoids SL3 PS2 SL4 SL2 SL1 PS5 SL5 PS4 PS1 Q751 PS3 Symbol PS SL Figure 11-601 Name Photointerrupters Notation PS1 PS2 PS3 PS4 PS5 Description Scanner home position detection Lens home position detection Delivery assembly paper detection Vertical path assembly paper detection Single-feeder paper detection Q751 Pre-registration roller paper detection Remarks Single-feeder type only Solenoid SL1 Pickup clutch solenoid SL2 Registration clutch solenoid SL3 Lens solenoid SL4 Multifeeder pickup solenoid SL5 Cassette pickup solenoid Multifeeder type only COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 11-79