Errors - Toshiba e-STUDIO520 Service Manual

16.7 Errors

Errors can be divided into the sensor adjustment error, EEPROM error, tray lift motor(M38) error and
temperature detector error.
1) Sensor adjustment error
There are 4 kinds of sensor adjustment errors:
- Original length detection sensor (S63) adjustment error : C830
- Read sensor (S69) adjustment error : C820
- Large original exit sensor (S68) adjustment error : C860
- Small original reverse sensor (S66) adjustment error : C840
The D/A output voltage is adjusted so that the A/D input voltage for each sensor is kept within the
range between 3.16V and 3.55V while carrying out the all-sensor adjust ment at the adjustment
mode. At this time, the sensor adjustment error occurs when the D/A output voltage cannot be
adjusted within the range between 0.04V and 2.90V.
2) EEPROM error : C730
The EEPROM error occurs when the initialization value cannot be written on the EEPROM while
carrying out the EEPROM initialization at the adjustment mode or when data cannot be read out
from the EEPROM after turning ON the power.
3) Tray lift motor (M38) error : C850
The tray lift motor (M38) error occurs when a feeding jam because of which the upper limit/lower
limit cannot be detected within a specified time while lifting/lowering the tray takes place 3 times
continuously.
4) Temperature detector error : C870
The temperature detector error occurs when the temperature detector on the ADF board detects
having exceeded the upper or lower limit of the specified temperature. The detection timing is when
the power is turned ON or the operation is started. After detecting the error, the ADF operates with
the lower motor speed as the temperature rise mode.
e-STUDIO520/600/720/850 REVERSING AUTOMATIC DOCUMENT FEEDER (RADF)
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March 2005 © TOSHIBA TEC