Unit Replacement Priority Chart - Star Micronics LC-7211 Technical Manual

2.

Unit Replacement Priority Chart

Problem
Category
Details
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
EDS setting
Faulty operation
when power is
turned on/off
Abnormal motor
operating speed
(slow)
Fuse blown
during operation
Error detection of
head temperature
Carriage motor
error
Paper handling error
S. W. I error
EE-PROM &
RAM error
Watch dog timer
error
Note: The figures 1, 2 and 3 mean the priority of replacement.
Unit Exchange Sequence
Power Main
supply unit
logic board
2
2
1
1
1
2
2
2
2
2
1
1
1
1
1
3
1
2
2
2
1
1
1
– 56 –
Printer Control
mechanism panel board
1
1
2
2
1
1
1
1
2
1
2
2
1
1
1
Remarks
Replace ink ribbon
Check I/F cable
ROMAN lamp blink
COURIER lamp blink
ORATOR lamp blink
POWER lamp light
DRAFT lamp blink
POWER lamp light