Toshiba e-studio120 Service Manual page 83

Interface connector
Thermistor
→
Thermostat open
An abnormally high temperature
in the machine may cause the problem.
Check that the fan rotates normally.
(Similarly to H3-00.)
Sim 5-02
If the fan does not rotate normally,
check the fan connector and the
fan control signal. Replace the fax.
Check the setup of the kind of the fan.
SIM 26-63. The current setup is "2."
CN120
MCU
→
→
Use a tester to check the
AC line of the interface
connector. Replace the
fusing unit.
Check release of the headlock switch.
Check the scanner unit operation with SIM 1-01.
Operates.
Does not operate.
The shading sheet does not read.
The check item is the same as that of E7-10.
Check the connector. (CN103).
Check that the drive belt is properly applied to the scanner unit.
Check the drive signal of the scanner motor.
(OUT A+, A-, OUT B+, B-)
If there are no signals, replace the MCU.
If there are signals, replace the motor.
Abnormally heavy load of the scanner drive
(Improper engagement of the motor drive gear and the belt drive
gear)
(Abnormally high belt tension)
MHPS does not detect the home position. (MHPS, harness, PWB)
Check the scanner unit operation with SIM 1-01.
Check the operation of MHPS. When
executing SIM 1-01, check that the DV
replacement lamp should light up.
Does not operate.
(If the lamp lights up, check the items of
"Does not operate."
Check the connector (CN103)
Check that the drive belt is properly applied to the scanner unit.
Check the drive signal of the scanner motor.
(OUT A+, A-, OUT B+, B-)
If there are no signals, replace the MCU.
If there are signals, replace the motor.
Abnormally heavy load of the scanner drive
(Improper engagement of the motor drive gear and the belt drive
gear)
(Abnormally high belt tension
Follow the above signal line.
Operates.
Follow the above signal line.