Ricoh PT3 Field Service Manual page 78

4. Replacement and Adjustment
Installation
4
If the following remarks are not followed, the thermal head will be installed incorrectly.
1. Fit the base's springs [A] over the protrusions [B] on the underside of the thermal head (5 points).
2. While fitting the tops of the springs [A] over the protrusions on the underside of the thermal head, hook
the lock pawls [C] of the thermal head onto the base (3 lock pawls). Make sure to set the front side
[D] (the paper table side) first.
3. Make sure that all protrusions are properly fitted into the springs.
• Adjust the thermal head voltage (
• Do not touch the surface with bare hands. (If you touch it, clean the surface with alcohol.)
• Do not touch the terminals of the connectors with bare hands.
76
p.79) after installing the new thermal head.