Star Micronics NX-1020 - Unit Replacement Priority Chart

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TROUBLESHOOTING
2. Unit Replacement Priority Chart
Unit Exchange Sequence
Power
supply unit
Problem
Details
Category Remarks
Specific display
lamp only will
not glow
Specific switch
only cannot be
input
Buzzer does not
sound (sound
volume
inadequate)
Strange sounds
during operation
No motor
holding power
(power very
weak)
Dots skipped
Print is too light
Ink ribbon
entanglement
(wire sticks out)
Absence of paper
not detected
Lever position
not detected
Incorrect printing
Ink ribbon not
forwarded
No operation at
DIP switch
setting
Faulty operation
when power is
turned on/off
Abnormal motor
operating speed
(slow)
Fuse blown
during operation
Error detection of
head temperature
CR Home position
error
CR motor error
RAM check error
EE-PROM check
error
Color ribbon error
2
3
Replace ink ribbon
Check I/F cable
EDS mode
“ON LINE”
lamp blink
“POWER” and “QUIET”
lamp blink
“POWER”
lamp blink
“QUIET”
lamp blink
“QUIET” and “ON LINE”
lamp blink
“POWER”, “ON LINE”
and “QUIET” lamps blink
Operation related
Motor related
Print head
related
Detector
related
Interface related and others
2
2
1
1
1
2
2
2
2
1
1
1
1
1
1
2
2
2
1
1
2
2
2
1
1
1
1
2
1
2
2
2
1
1
1
1
1
1
Main
logic board
Printer
mechanism
Control
panel board
Note: The figures 1, 2 and 3 mean the priority of replacement.
Error indication