Hitachi HT-4139-28 Maintenance Manual page 19

REV0 10.02.15
3.3.4 Cleaning the Drive Roller
If the Skew and Block accuracy are out of the specification range, check if there are not any debris or
paper scraps on the Drive Roller T1~T7
The Drive Rollers are made from polyurethane rubber
Use gauze soaked in ethanol to wipe the debris and paper scraps from the Drive Roller
① Inspect the Drive Roller for dirt, wear, or damage
『 Note 』 Do not damage Roller
3.3.5 Cleaning the Pinch Roller
① Pinch Roller T1 is made up of plastic bearing
Use gauze soaked in ethanol to wipe the debris and paper scraps from the Pinch Roller
② Pinch Rollers T2-T7 are made up of metallic bearing
Use gauze soaked in ethanol to wipe debris and paper scraps from the Pinch Roller
③ Inspect the Drive Roller for dirt, wear, or damage
3.3.6 Cleaning the Imprinting Head Pin
Imprinting Head Pin
-H3-7-
Clean debris on the Imprinting Head Pin using the brush.