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©
2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
APPENDIX
A-3
2 LIST OF SIGNALS/ABBREVIATIONS
The following is a list of the signals and abbreviations used in this chapter and the circuit
diagrams.
REF.
The abbreviations in parentheses are electrical signals, but are analog sig-
nals, which cannot be expressed in terms of ‘1’ or ‘0’. Others are digital
signals, which may be expressed in terms of ‘1’ or ‘0’.
AFTER_JOIN_PS Post-confluence sensor detection signal
ADF OPEN* Copyboard cover open/closed sensor detection signal
BUFFER_CL Hopper internal magnet roller drive clutch drive command
BUFFER_MOTOR(-) Hopper internal toner feeder motor drive command 2
BUFFER_MOTOR(+) Hopper internal toner feeder motor drive command 1
BUFFER_NG Hopper internal toner lower limit sensor detection signal
BUFFER_WARNING Hopper internal toner sensor detection signal
C3_FEED_CL Cassette 3 pickup sensor detection signal
C3_FEED_PS Cassette 3 pickup clutch drive command
C3_LENGTH0 Cassette 3 paper length sensor detection signal
C3_LIFT_PS Cassette 3 lifter sensor detection signal
C3_LIFTER_MOTOR Cassette 3 lifter motor drive command
C3_OPEN_PS Cassette 3 open/closed sensor detection signal
C3_PAPER_PS Cassette 3 paper sensor detection signal
C3_PICKUP_SL Cassette 3 pickup solenoid drive command
C3VR Cassette 3 paper width volume detection signal
C4_FEED_CL Cassette 4 pickup clutch drive command
C4_FEED_PS Cassette 4 pickup sensor detection signal
C4_LENGTH0 Cassette 4 paper length sensor detection signal
C4_LIFT_PS Cassette 4 lifter sensor detection signal
C4_LIFTER_MOTOR Cassette 4 lifter motor drive command
C4_OPEN_PS Cassette 4 open/closed sensor detection signal
C4_PAPER_PS Cassette 4 paper sensor detection signal
C4_PICKUP_SL Cassette 4 pickup solenoid drive command
C4VR Cassette 4 paper width volume detection signal
CARTRIGE_DETECT Cartridge detecting switch detection signal
CARTRIGE_MOTOR- Cartridge internal toner feeder motor drive command
CARTRIGE_MOTOR+ Cartridge internal toner feeder motor drive command
CARTRIGE_OPEN_PS Toner cartridge cover open/closed sensor detection signal
CLAW_JAM Fixing claw jam sensor detection signal
CURL_FAN_STOP De-curling fan lock detection signal
D_SENS3* Original size sensor detection signal 3
DCP_FAN1_STOP Power supply cooling fan 1 lock detection signal
DCP_FAN2_STOP Power supply cooling fan 2 lock detection signal
DECK_PULL_PS Front deck (left) feeding sensor detection signal
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