TROUBLESHOOTING
Rev. B 5-1
5.1 TROUBLESHOOTING INFORMATIONThe 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.
Table 5-1. Fatal Error Information
Fatal Error 7-segment
LED *1) Beeper *2) Description Note*3)
CR motor
circuit
shortage error
1- • The isolation resistance in the CR
motor is too low. Auto power off
after 12 seconds
Cutter error 2 - - • Optional cutter cable is not connected
firmly.
• Optional cutter is defective.
Auto power off
after 12 seconds
Platen gap
error 3- - - • 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.
Auto power off
after 12 seconds
Carriage lock
error 4 - - - - • The carriage is locked.
• The interlock switch doesn’t close
exactly.
• The parallelism adjustment is
incorrect.
• PG adjustment values are incorrect.
Auto power off
after 12 seconds
Carriage load
measurement
error
6 - - - - - - • PW sensor is defective.
• The CR motor is defective.
• The CR encoder sensor is defective.
Auto power off
after 12 seconds
Head fan error 7 - - - - - - - • The head fan driver IC is shorted.
• The head fan of the print head is
defective.
Head power off
immediately
Head circuit
shortage error 8 - - - - - - - - • The print head driver IC is shorted.
• The coil of the print head is defective. Head power off
immediately
RAM check
error 9 - - - - - - - - - • DRAM of C204 MAIN board is
defective. Auto power off
after 12 seconds
Paper memory
setting error a - - - - - - - - - - - -
EEPROM data
compare error b - - - - - - - - - - - • EEPROM on the C204 MAIN board
is defective.
Tractor change
error c - - - - - - - - - - -
-• Tractor select mechanism is
defective. Auto power off
after 12 seconds
Watch dog
error d• C205 MAIN board has trouble. Auto power off
after 12 seconds
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.