Star Micronics NX-1000 series - Defective Print Head Operation

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TROUBLESHOOTING
4-4. Defective Print Head Operation
Check or replace
1) TR8~TR16
(TR6~TR14)
Adjust gap
(Refer to chapter 3.)
Power supply
unit abnormal.
(Refer to item 4-2.)
Check or replace
1) Gate array
2) CPU
YES
YES
( ): Ver. 1.5 and Ver. 2
( ): Ver. 1.5 and Ver. 2
START
Does not
print at all?
YES
+24V
line is
supplied?
YES
Check or replace
1) TR4(TR1)
2) Gate array
Head
energizing control
signal is normal?
*3
YES
Check or replace
1) Print mechanism
END
NO
NO
NO
A specific
pin does not
work?
NO
Print is light
as whole?
NO