Uniwill 340S2 - Page 66

Chapter 5 Troubleshooting Guidelines
340S2 66 Rev : B
5.12 PIO port test error
Symptom: When a print command is issued, printer prints nothing or garbage.
PIO test error
1. check whether cables, printer & printer driver are installed properly
2. try another working printer and cable
Correct it
Re-test OK?
Setup OK?
Correct it
Board level troubleshooting
Replace motherboard
Check PIO
controller, for
cold solder?
Re-solder
No
Yes
Yes
Yes
No
No
One of the following parts on the motherboard maybe defective, plug
PIO loopback at PIO port one a time and test, if error replace PIO
controller