Star Micronics LC-1011C Technical Manual page 56

TROUBLESHOOTING
3
Printing begins?
YES
Printing
operation normal?
YES
Stop print program.
END
B
Carriage moves
with hand?
YES
Output
(25~45V, +5V)
of power supply unit is
normal? *4
NO
Turn power off.
Fuse blows out?
YES
Replace fuse.
Remove connector CN7 from
main logic board.
Turn power on.
4
NO
NO
NO
YES
NO
*4
VH(25~45V) Line
VL(5V) Line
D
1) Replace I/F cable.
2) Replace main logic board.
3) Check host computer.
C
Replace printer mechanism.
1) Replace main logic board.
2) Replace printer
mechanism.
3) Replace control panel
board.
Replace power supply unit.
25~45V
+5V 5%
– 52 –
Between Pin 5 and Pin 3 of CN101
Between Pin 1 and Pin 2 of CN101
A