Toshiba BSA4TMTS12QMR, BSA4TMGS12QMR manual Troubleshooting

5. TROUBLESHOOTING

EO18-33016A

5. TROUBLESHOOTING

Possible cause	Check point	Solution
The feed gap sensor has	Usually, a sensor calibration is automatically	Refer to the System Mode Manual,
not been adjusted.	performed. However, for some media, it	Section 2.5, and adjust the sensor.
	may be necessary to register a print area	If “SENSOR ERROR” still appears after
	level voltage and a no paper level voltage in	an adjustment, there can be the
	the system mode. The difference between	following failures:
	two voltages must be 1V or more.	(1) Upper and lower sensor positions
		(2) Foreign object is caught in the
		sensor.
		(3) Connectors are not inserted
		completely.
		(4) Sensor PCB is faulty.
		(5) Sensor harness or MAIN PC board
		is faulty.
The sensor harness is	Check if the sensor harnesses are properly	Connect the harness completely.
not connected properly.	connected.
The media sensor is not	• If the sensor harnesses are not	If the problem still occurs even after
installed correctly.	completely connected, or sensor	clearing the faulty part, the sensor PCB
	harnesses are faulty, the sensor cannot	may be faulty.
	function properly.
	• The sensor position is moved along the
	slit with 2-mm pitch teeth. But if the
	stopper of the sensor is damaged, an
	alignment cannot be performed properly.
	• Check if the photo-transistor on the upper
	sensor PCB is aligned with a hole in the
	upper sensor cover.
3. A feed jam (paper jam) error occurs when the black mark sensor is used.
Possible cause	Check point	Solution
Media type is not suitable	A sensor error may occur depending on the	Change the command or media type
for the selected sensor.	combination of the selected sensor and the	properly.
	media type to be used.	Or, the media may need to be modified
	(e.g.) Black mark sensor + Media without	so that a print start position detection
	black marks	can be performed correctly.
The black mark sensor	The black mark sensor position needs to be	Adjust the black mark sensor position to
position is not proper.	adjusted so that the sensor can detect black	the center of a black mark.
	marks. Without position adjustment, a
	sensor error or no paper error occurs
	improperly.
A foreign object is	If paper or ribbon particles, or other foreign	Remove the foreign objects.
attached to the sensor.	objects are attached to the sensor, the
	sensor cannot function properly.

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