Canon PC800 Series Service Handbook page 73

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What follows below is a list of signals and abbreviations used in the chapters of the manual and circuit diagrams.
The abbreviations within parentheses represent analog signals, which cannot be expressed in terms of '1' or '0'.
1.
Signals
ACBIAS
AC BIAS OSCILLATION signal
[AE]
AE SENSOR OUTPUT signal
AEREF
AE SENSOR REFERENCE signal
BIAS_PWM
DC BIAS CONTROL signal
BIAS_S
DC BIAS MONITOR signal
CLK32K
TRANSFORMER CONTROL signal
CPUSD
CASSETTE PICKUP SOLENOID DRIVE signal
DPD
DELIVERY PAPER DETECTION signal
DV_AC_ON
DEVELOPING AC BIAS ON signal
DV_DC_ON
DEVELOPING DC BIAS ON signal
E0_DT
E0 DETECTION signal
FM1D
SCANNER COOLING FAN DRIVE signal
HEAT_ERR
FIXING HEATER ERROR signal
HEAT_OFF
FIXING HEATER OFF signal
HEAT_PWM
FIXING HEATER DUTY signal
HEAT_TRG
FIXING HEATER DRIVE signal
LAMP_DETECT
LAMP ACTIVATION DETECTION signal
LAMP_ON
SCANNING LAMP ACTIVATION signal
LHP
LENS HOME POSITION signal
LNSLD
LENS SOLENOID DRIVE signal
MFSLD
MULTIFEEDER PICKUP SOLENOID DRIVE signal
MLOCK
MAIN MOTOR CONSTANT SPEED signal
MMCLK
MAIN MOTOR CLOCK PULSE signal
MMD
MAIN MOTOR DRIVE signal
PAC_OUT
PRIMARY CORONA AC BIAS signal
PAC_S
PRIMARY CORONA AC DETECTION signal
PDC_PWM
DC BIAS CONTROL signal
PDC_S
DC VOLTAGE MONITOR signal
PDP
VERTICAL PATH ROLLER PAPER DETECTION signal
PR_DC_ON
PRIMARY CHARGING DC BIAS ON signal
PUSLD
PICKUP CLUTCH SOLENOID DRIVE signal
PWM_1KHz
SCANNING LAMP INTENSITY ADJUSTMENT signal
PWOFF
POWER SWITCH OFF signal
RGSLD
REGISTRATION CLUTCH SOLENOID DRIVE signal
RLOFF
RELAY DRIVE signal
RPD
PRE-REGISTRATION ROLLER PAPER DETECTION signal
SB_LP
SIDE BLANK EXPOSURE LAMP ON signal
SC_A
SCANNER MOTOR PULSE signal A
SC_B
SCANNER MOTOR PULSE signal B
SC_COM
SCANNER MOTOR DRIVE signal
SCHP
SCANNER HOME POSITION signal
SFPD
SINGLE-FEEDER PAPER DETECTION signal
T_FEEDBACK
TRANSFER BIAS VOLTAGE DETECTION signal
T_FW_DRV
TRANSFER DC BIAS CONTROL signal
T_FW_ON
TRANSFER DC BIAS ON signal
T_FW_S
TRANSFER CURRENT DETECTION signal
T_REV_ON
TRANSFER POSITIVE DC BIAS ON signal
TH1
FIXING THERMISTOR signal
TH2
SCANNER THERMISTOR signal
2.
Abbreviations
AER
AE (MEASUREMENT) ROTATION
INTR
INITIAL ROTATION
LSTR
LAST ROTATION
SCFW
SCANNER FORWARD
SCRV
SCANNER REVERSE
STBY
STANDBY
B. Signals and Abbreviations
A-3

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