TEC B-470 SERIES Maintenance Manual page 14

2. MAJOR UNIT REPLACEMENT
2.6.2 New type print head
NOTE: Never loosen screws other than two SM-4x8B.
1) Turn the head lever clockwise to lower the print head. Remove the two SM-4x8B screws.
2) Turn the head lever counterclockwise and disconnect the two connectors to detach the print
head from the print block.
Connector
3) Replace the print head and connect the connectors.
4) Align the two holes A in the middle of the print head with the print head position adjusting pins
provided in the print block and fit the print head into the print block.
5) Turn the head lever clockwise and secure the print head with screws in the holes B .
NOTE: Use caution to prevent damage to the element during print head adjustment.
Adjusting the print head position
When print tone becomes light from using special paper with improper print head position,
please follow the procedure below and adjust the print head position.
NOTE: Never loosen screws C unless print position fine adjustment is required because
they have been adjusted properly. Doing so will change the adjustment.
Screw (SM-4x8B)
Print Head
Connector
Print Block
Head Lever
2-10
(Revision Date: Feb. 01 '96)
2.6 Replacing the Print Head
Screws
(NEVER remove these screws.)
Screws painted red
(NEVER remove these screws.)
Fig. 2-15
EM18-33011