Platen Rubber Roller; Paper Holder; Sensors And Their Surrounding Area - Star Micronics FVP-10U Hardware Manual

10-2. Platen Rubber Roller
Apply alcohol (ethanol, methanol, or isopropyl) to a dry, soft cloth, and wipe off the dirt from the rubber roller. Clean the entire
rubber roller by rotating it.

Paper holder

Rubber roller
10-3. Paper Holder
Clean the paper holder of debris, dust, paper particles, glue, etc. that may have accumulated.
10-4. Sensors and Their Surrounding Area
Clean the sensors of debris, dust, paper particles, etc.
In particular, if the reflection sensors are dirty, detection will not be performed properly.
Cleaning is relatively easy if you use a brush or a similar tool.
PE and BM sensor
-  -