SATO CG412 User Guide

Section 5: Cleaning and Maintenance

Page 5-4

It is easy to replace the print head and platen roller of the CG4 Series printer.
The one-touch, tool-less print head release mechanism enables the print head to be quickly and easily 
replaced. The platen roller can be replaced without the need to use any tools.

The print head on the printer is a user-replaceable item. If it becomes damaged for any reason, it can be 
easily removed and replaced. Contact your local SATO representative for information on obtaining a new print 
head.

Make sure the printer is turned off, and remove the power 
cable. 

Lift the Top Cover.

While pressing and hold down the top portion of the print 
head assembly (see arrow 

), slide the side tab  (

) 

downward to unlock the print head assembly. Shift the print 
head assembly to the right and pull the whole print head 
assembly downward.

The cable connectors (circled) at the rear of the print 
head is now exposed. Pull the print head downward, then 
gently disconnect the defective print head from the cable 
connectors. 

Carefully connect the cable connectors to a replacement 
print head. The white cable should be connected to the 
left connector while black cable should be connected to 
the right connector. The connectors are keyed so that they 
can only be inserted in the correct orientation. 

While handling the print head, be careful not to scratch the 
printing surface of the print head. Scratching the surface 
will cause permanent and irreparable damage that is not 
covered by the warranty!

Insert the left shaft of the new print head assembly into 
the hole beside the triangular symbol on the left side of 
printer. (see circled area).

Caution

• Static electricity can result in component damage. Observe appropriate grouping procedures 

when replacing any components.

• Wear protective gloves to avoid contaminating the sensitive print head surface.

Print head 
assembly

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