Ricoh C211 Service Manual page 214

I Are you using the new VT master? (more sensitive) I
1-
Yes
No
Use the VT master.
I Has the platten roller been mounted correctly on the thermal head? I
I
L
Yes
No
Tighten the two knobs securing the platten roller and
adjust the platten roller pressure evenly.
I Make prints in Test Pattern mode and check the image, (See page 4-17,) I
I Does the same problem still occur with the test pattern?
L
Yes
No
A/D conversion board, CCD board, or
image processing board is defective.
_ Thermal head, thermal head drive board, or
image processing board is defective,
7-8