Sharp AR-CF2 service manual Tray alarm is displayed on the system display

1: Jan. 9 2004

Problem		Tray alarm is displayed on the system display.
	Case1	Cause	Sub-tray pulling detection sensor fault
		Check and	Measure a voltage on TP14 on the
		remedy	controller PCB and check that 5 V is
			observed when the sub-tray is in place,
			and that 1 V or less is observed when the
			sub-tray is pulled out. Replace the sensor
			if the measured voltage exceeds these
			ranges.
	Case2	Cause	Sub-tray pulling detection sensor fault
		Check and	Measure a voltage of TP15 on the
		remedy	controller PCB and check that 5 V is
			observed when the tray is in place, and
			that 1 V or less is observed when the tray
			is pulled. Replace the sensor if the
			measured voltage exceeds these ranges.
	Case3	Cause	Controller PCB fault
		Check and	If the problem is not solved by a change in
		remedy	the sensor level after the above cases 1
			and 2 are confirmed, replace the
			controller PCB.

	Problem		Cover open is displayed on the system display.
		Case1	Cause	JAM cover open/close switch fault
			Check and	Check continuity between the switch
			remedy	contacts., Replace the switch if no
				conduction is measured.
		Case2	Cause	Reverse unit open/close sensor fault
			Check and	Measure a voltage of TP9 on the
			remedy	controller PCB and check that 1 V or less
				is observed when the reverse unit is
				open, and that 5 V is observed when the
				reverse unit is closed. Replace the sensor
				if the measured voltage exceeds these
				ranges.
		Case3	Cause	Rack cover open/close sensor fault
1			Check and	Measure the voltage of TP10 on the
			remedy	control PWB and check that it is 1V or
				less when the base cover is opened and
				5V when closed.
				If the voltage is outside the above
				specifications, replace the sensor with a
				new one.
		Case4	Cause	Controller PCB fault
			Check and	If the problem is not solved by a change
			remedy	in the sensor level after the above cases
				1 to 3 are confirmed, replace the
				controller PCB.
	Problem		Inserter unset is displayed on the system display.
		Case1	Cause	Set sensor fault
			Check and	Measure a voltage of TP16 on the
			remedy	controller PCB and check that 5 V is
				observed when the inserter is set, and
				that 1 V or less is observed when the
				inserter is not set. Replace the sensor if
				the measured voltage exceeds these
				ranges.
		Case2	Cause	Controller PCB fault
			Check and	If the problem is not solved by a change
			remedy	in the sensor level after the above case 1
				is confirmed, replace the controller PCB.

Problem		The registration clutch does not perform.
	Case1	Cause	Loose contact of the clutch connector
			terminal
		Check and	Check continuity of the connector
		remedy	contacts. (CN4)
	Case2	Cause	Disconnection of the clutch coils
		Check and	Inspect the coils for continuity. Replace
		remedy	the coils if no continuity is measured.
	Case3	Cause	Controller PCB fault
		Check and	If the clutch does not perform in the clutch
		remedy	single operation mode, replace the
			controller PCB.

AR-CF2 TROUBLESHOOTING 8 - 2