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Connector Locations 5-11
5016-001
Symbol Name Function
S1 Power Switch On/Off AC power switch - turns printer on/off.
S2 Interlock Switch Shuts down the +24 V dc LVPS whenever
the fuser, front or top covers open.
S3 5 V dc Interlock
Switch 1
Shuts down the +5 V dc LVPS supply to the
printhead, whenever the fuser, front or top
covers open.
S4 5 V dc Interlock
Switch 2
Shuts down the +5 V dc LVPS supply to the
printhead, whenever the fuser, front or top
covers open. (double interlock)
TS Thermostat The thermostat shuts down AC voltage to the
fuser lamp should the fuser temperature
become abnormally high.
OL1 New Oil Roller
Sensor
Detects when a new oil roller is installed.
TH1 Thermistor Detects and regulates the temperature of the
hot roll in the fuser.
PHI1 Paper Exit Sensor Detects when paper exits the fuser and is fed
to the exit tray.
PHI2 Carriage Position
Sensor
Detects when the carriage reaches home
position.
PHI3 Coupling On Sensor Detects when the coupling is on.
PHI4 Coupling Off Sensor Detects when the coupling is off.
PHI5 Bypass Paper
Detecting Sensor
Detects when paper is fed from the bypass
multipurpose tray.
PHI6 Cam Sensor Detects the cam position.
SW700 Paper Size detect
switch
Detects paper size.
SW701 Paper Size Detect
Switch
Detects paper size.
SW702 Tray Missing Detect
Switch
Detects when tray 1 is not installed.
PQ250 OHP Detect Sensor Detects when the OHP is fed to the
registration roller.
PQ300 Toner Empty Sensor Detects a near empty toner cartridge.