SERVICE CALL CONDITIONS April 2007
4-36
Optical unit sensor error SC268 C
At power ON, one of the two
temperature sensors in the
optics unit detected a
temperature lower than 0°C for
more than 1 sec.
-or-
It detected a temperature higher
than 100°C for more than 1 sec.
• Thermistor disconnected (causes
extremely low temperature reading)
• Thermistor damaged and short circuited
(causes extremely high temperature
reading)
• BICU defective
Exposure thermistor 2 error SC269 C
At power on, exposure
thermistor 2 detected a
temperature lower than 0°C for
more than 1 sec.
-or-
It detected a temperature higher
than 100°C for more than 1 sec.
• Thermistor disconnected (causes
extremely low temperature reading)
• Thermistor damaged and short circuited
(causes extremely high temperature
reading)
• BICU defective
SC270 C
Mirror motor upper/lower limit: Y (Yellow)
SC271 C
Mirror motor upper/lower limit: M (Magenta)
SC272 C
Mirror motor upper/lower limit: C (Cyan)
The pulse rate of the mirror
motor reaches the upper or
lower limit.
Note: SP2182 displays the
pulse rate for each motor.
• 3rd mirror motor is defective.
• 3rd mirror motor connecter is not
connected correctly.
MUSIC error SC285 D
An error with the MUSIC occurs
four times since the last time the
main power was turned ON.
• ITB defective
• MUSIC sensors are dirty
• MUSIC sensors are defective
