Thermal Head Test - Ricoh C217 Service Manual

5. THERMAL HEAD TEST

This function is used to determine which printer component is causing an
image problem on the master.
In this mode, the background pattern that is printed covers the entire sheet
of paper.
Procedure
1. Turn off the main switch and unplug the power cord.
2. Remove the front cover and turn of the DIP switch 101-1.
3. Place paper on the paper table.
4. Plug the power cord and turn on the main switch.
5. Set an original in the ADF. (Any original is acceptable.)
6. Press the Master Making key.
7. Make prints and check the image.
Assessment
Pattern image is normal .................. Part A component is defective.
Pattern image is abnormal............... Part B component is defective.
Exposure Lamp
CCD
PCB
C217
A
A/D
Conversion
PCB
4-12
Main
PCB
B
Thermal
Head
SM