Troubleshooting Information; Error Messages - Epson DFX-8500 Service Manual

5.1 TROUBLESHOOTING INFORMATION

The information in this chapter makes troubleshooting easier to perform by listing various problems that can
occur and providing possible solutions.
Note: For this printer, no special tools are necessary for troubleshooting to the unit level, with the
exception of a digital multi-meter. Some component-level troubleshooting may require an
oscilloscope.

5.1.1 Error Messages

The DFX-8500 indicates errors using beeps. Table 5-1 lists fatal errors.
Fatal Error 7-segment
LED *1)
CR motor 1
circuit
shortage error
Cutter error 2
Platen gap 3
error
Carriage lock 4
error
Carriage load 6
measurement
error
Head fan error 7
Head circuit 8
shortage error
RAM check 9
error
Paper memory a
setting error
EEPROM data b
compare error
Tractor change c
error
Watch dog d
error
Note 1: The 7 segment LED indicates error No. and "E" alternately.
Note 2: The descriptions "."and "-" show how the beeper sounds.
".": Beeper sounds 100 ms and interval is 100 ms.
"-" : Beeper sounds 500 ms and interval is 100 ms.
Note 3: Turn the printer power off while the 7 segment LED are on, or the printer shuts power
down automatically. You can't turn the printer back on for 5 minutes after the printer shuts
power down automatically
Rev. B
Table 5-1. Fatal Error Information
Beeper *2)
-
The isolation resistance in the CR
motor is too low.
- -
Optional cutter cable is not connected
firmly.
Optional cutter is defective.
- - -
The PG home sensor is broken.
The PG motor is broken.
The parallelism adjustment is
incorrect.
PG adjustment values are incorrect.
PG backlash is too tight.
- - - -
The carriage is locked.
The interlock switch doesn't
exactly.
The parallelism adjustment is
incorrect.
PG adjustment values are incorrect.
- - - - - -
PW sensor is defective.
The CR motor is defective.
The CR encoder sensor is defective.
- - - - - - -
The head fan driver IC is shorted.
The head fan of the print head is
defective.
- - - - - - - -
The print head driver IC is shorted.
The coil of the print head is defective.
- - - - - - - - -
DRAM of C204 MAIN board is
defective.
- - - - - - - - - -
- - - - - - - - - - -
EEPROM on the C204 MAIN board
is defective.
- - - - - - - - - - -
Tractor select mechanism is
-
defective.
C205 MAIN board has trouble.
TROUBLESHOOTING
Description
close
-
Note*3)
Auto power off
after 12 seconds
Auto power off
after 12 seconds
Auto power off
after 12 seconds
Auto power off
after 12 seconds
Auto power off
after 12 seconds
Head power off
immediately
Head power off
immediately
Auto power off
after 12 seconds
-
Auto power off
after 12 seconds
Auto power off
after 12 seconds
5-1