TEC B-370 Series Maintenance Manual page 17

2. MAJOR UNIT REPLACEMENT
2. Attach the jig to the platen, feed roller and pinch roller shaft as shown in the figure below.
Then attach the pinch roller cover to the pinch roller frame with the three B-4x12 screws.
Then secure the pinch roller frame with the three B-4x12 screws.
NOTES:1. Replace the platen and the feed roller prior to attaching the jig.
2. Attach the jig while the pinch roller frame is tentatively attached to the main frame with the
B-4x12 screws. Secure the pinch roller cover to the pinch roller frame with the three B-4x12
screws, then tighten the other side of the screws.
3. The flat top of the pinch roller frame must be installed in parallel to bosses on the printer
frame.
Check
1 Check if excessive load is applied to the jig after the above NOTE 2.
(For example, check if the pinch roller frame moves when the jig is removed.)
2 Check that there is no gap caused by a slant shaft between the pinch roller and the feed
roller when the pinch roller is lowered.
3. Turn the head lever clockwise to lock the pinch roller shaft ass'y. Attach the spring plate to the pinch
roller frame with the two SM-4x8B screws, pushing the spring plate toward the rear of the printer.
Pinch Roller Shaft Ass'y
NOTE: Check that the pinch roller shaft ass'y moves up and down smoothly when turning the head
lever clockwise and counterclockwise.
4. Install the media guide plate to the printer so there is a 1.5 to 2.5 mm gap between the media guide
plate and the printer block base.
Spring Plate
2.10 REPLACING THE PINCH ROLLER SHAFT ASS'Y
Pinch Roller Cover
B-4x12 (6 screws)
SM-4x8B
2-13
EM18-33012
(Revision Date Sep. 29, '95)
Jig
Fig. 2-22
Pinch Roller Frame
Fig. 2-23