Replacing The Platen And Feed Roller - TEC B-470 SERIES Maintenance Manual

2. MAJOR UNIT REPLACEMENT
(1) Loosen the screws c securing the print head position adjusting pin.
(2) Loosen the screws b one by one, slightly move the print head backward or forward, and
then tighten the screws b and c . Ensure that the print head is parallel to the platen. If
not, print tone will be uneven.
(3) Make a test print and if necessary, repeat Step 2) until the printer prints properly.

2.7 Replacing the Platen and Feed Roller

CAUTION:
1. NEVER remove the four screws painted red fixing the right plate and reinforcing plate. (See
Fig. 2-16)
2. The pinch roller belt assembled inside the printer does not need to be replaced because it
receives less load.
1) Remove the front plate and belt cover. (See Fig. 2-6.)
2) Turn the head lever counterclockwise, then release the ribbon shaft holder plate.
Head Lever
(securing the adjusting pin)
(Print Head Position
Adjusting Pin)
Ribbon Shaft Holder Plate
2-11
(Revision Date: Feb. 01 '96)
2.6 Replacing the Print Head
Print Head Bracket
Print Head
(securing the print head)
Fig. 2-16
E-ring (M3)
Hold Shaft
Fig. 2-17
EM18-33011