44
C H A P T E R 4 L O C AT I N G T H E P R O B L E M
Refer to the following to prevent incorrect cash drawer status detection by the system:
Port
I/O Port Address
Bit
Condition
Note
Cashdrawer A
Control port
F1
0
High(1) → Close
Low(0) → Open
If Bit is set to Low to open the
cash drawer, after it must be set
back to High to prevent the system
as always detecting the drawer as
open.
Cashdrawer B
Control port
F1
1
High(1) → Close
Low(0) → Open
Cashdrawer A
Status port
F1
2
High(1) → Close
Low(0) → Open
Cashdrawer A
Status port
F1
3
High(1) → Close
Low(0) → Open
LCD symptoms
Symptom
Corrective Procedure
LCD backlight is not working but text is still visible on
•
screen
Reseat the LCD cable.
1.
Reseat the inverter cables.
2.
Replace the inverter cables.
3.
Replace the inverter.
4.
LCD backlight is working but text is not visible on screen
•
Reseat the LCD cable.
1.
Reseat the inverter cables.
2.
Replace the LCD.
3.
LCD screen is garbled
•
Characters are missing pixels
•
Screen is distorted
•
Screen displays wrong color
•
Screen displays extra vertical/horizontal lines
•
Reseat the LCD cable.
1.
Replace the inverter cables.
2.
Replace the LCD panel.
3.
Replace the mainboard.
4.
Connecting a
Figure 4.1
cash drawer
Turn on the machine .
2.
Cashdrawer
Summary of Contents for PT-6212
Page 1: ...All in one POS Terminal PT 6212 Service Manual...
Page 2: ......
Page 8: ...vi...
Page 43: ...35 Click 5 Next to continue Click 6 Next to continue...
Page 45: ...37 Click 3 Install to begin installation When installation is completed click 4 Finish...
Page 68: ...60 C H A P T E R 5 R E P L A C I N G F I E L D R E P L A C E A B L E U N I T S F R U s...
Page 69: ...61 APPENDIX PART LIST AND SPECIFICATION Exploded diagram main parts Figure 6 1...
Page 70: ...62 A P P E N D I X Exploded diagram printer parts Figure 6 2...
