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5.3.1 Error/Status Code Display Conditions, Printer Action, and
Recovery Procedures
Error/Status Code Display Conditions, Printer Action, and Recovery Procedures
Table 5.3.1.1
Code
U6
U2
U4
687200Q
Display Conditions
1. A Nonvolatile Memory read
error occurred when the printer
power was switched on.
2. Nonvolatile Memory write error
occurred during write to the Non-
volatile Memory.
1. The SOS signal intervals are
longer than the set READY inter-
val after 20 seconds from the
start of Laser warm up. (Warm
up Failure)
2. The actual LD output is lower
than the LD power setting.
3. The SOS signal intervals
become longer than the set Fail
interval after the Laser warm up
is completed.
1. The Fuser warm up does not
finish within 80 seconds.
2. The Fuser temperature
becomes lower than the set LOW
Trouble temperature after the
Fuser warm up is completed.
3. The Fuser temperature rises
higher than the set HIGH Trouble
temperature after the Fuser
warm up is completed.
4. Discontinuity is detected in the
Thermistor circuit of the Heater
Assembly.
5. The power supply to the
Heater Quartz continues for 10
or more seconds while the Main
Motor is stopping after the Fuser
warm up is completed. (S.T.S
Failure)
* When the software is overrun,
or removed, the printer is reset
by the watch dog timer.
Printer Action
Immediately or after com-
pleting the current cycle
when printing, the printer
shuts down the Main
Motor, Laser Motor, and
the power supply to the
Fuser.
Immediately or after com-
pleting the current cycle
when printing, the printer
shuts down the Main
Motor, Laser Motor, and
the power supply to the
Fuser.
Immediately or after com-
pleting the current cycle
when printing, the printer
shuts down the Main
Motor, Laser Motor, and
the power supply to the
Fuser.
Service Manual
Recovery
Procedures
Switch off the printer
power, then back on
again.
Switch off the printer
power, then back on
again.
Switch off the printer
power, then back on
again.
5-73
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