HiTi Digital 630PS, Service Manual, Page: 10 / 80

Ver. Ex.1.1
Confidential
2003/7/8
3.1.5 LED & Sensor
3.1.5.1 Status/Error LED
Show printer status and error message. Green shining LED means printer is
ready. Green blinking LED means printer is busy. Orange blinking LED means
error message. (See “Chapter 7. Troubleshooting” for more information about
error message.)
Fig 6. Status/Error Sensor
3.1.5.2 CAM Sensor
Under different status, the position of platen roller is different. Cam sensor
indicates the position of platen roller and pinch roller. It has three positions, P1:
initial position, P2: load position, and P3: print position. The CAM controls the
platen roller moving between these positions, and the CAM sensor detects &
feedback the position information to firmware.
P1 = Initial Position
At this position, the gap between platen roller & TPH is largest. While
printer power on or reset, it will be at this position. The large gap
between platen roller & TPH enable paper moving through the gap.
At this position, the pinch roller is releasing as well.