Epson EPL-5700 Service Manual page 60

EPL-5700
Table 3-10. Service Req. Error List(cont.)
Paper Toner
Cause Light Light
Controller Related Errors
Rom checksum
error (bit 0 to 15,
font)
Rom checksum
error (bit 16 to 31,
font)
Rom checksum
error (bit 0 to 7,
program)
Rom checksum
error (bit 8 to 15,
program)
Rom checksum
error (bit 16 to 23,
program)
Rom checksum
error (bit 24 to 31,
program)
Cartridge access
error
EEPROM write
error
EEPROM write
counter overflow
Engine
initialization error
Other hardware
error
Software error
Note)
means light is on.
Rev. A
Memor On- Form Contin
y line Feed ue
Abnormal Laser
Laser diode emits light forcibly 200m sec after the polygon motor starts
rotation, and adjusts its power. During this power is adjusted, this error is
detected when the adjustment signal goes out of normal value.
Abnormal Polygon Motor
/SSCAN signal is not detected within 0.8 second after polygon motor
is turned on.
The rotational number of polygon motor does not reach the range of
0.5% within 5.5 seconds after the polygon motor is turned on.
After polygon motor is turned on and the rotational number of polygon
motor settles within 0.5%, that rotational number reaches 5.5
seconds continuously and go beyond 3%.
Abnormal Fusing
When the thermister detects that the temperature exceeds 210 C for
50m sec, this error is detected.
Thermister error is detected if the temperature difference by the
thermister is below the standard value and lasts for 50m sec,
comparing the temperature by the thermister from 8 to 12 seconds
after warming-up and the temperature by the thermister just when the
warming-up starts.
If the temperature by the thermister does not reach the setting
temperature within 45 seconds after warming-up starts, fusing
abnormal rising temperature is detected.
At each mode, when the temperature by the thermister goes below
the setting temperature for 50m sec consecutively, fusing abnormal
low temperature error is detected.
Chapter3 Troubleshooting
3-8