SATO CG4 Series - Print Head Replacement

Section 7: Replacement Procedures
Page 7-2
CG4 Series Service Manual
7.1 PRINT HEAD REPLACEMENT
If the print head becomes damaged or worn, it can be easily removed and replaced without having to make
critical adjustments.
Please wear protective gloves to avoid contaminating the sensitive print head surface. Before replacing the
print head, check the head counter values by printing a test pattern.
7.1.1 Print Head Replacement (For CG408 DT and CG412 DT Direct Thermal printer)
1. Ensure the printer is turned off, and remove the power
cable.
2. Lift the Top Cover.
3. 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.
4. 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.
5. 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.
6. 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).‘
7. Align the two circular recess of the print head bracket to
the two
springs attached to the top cover frame. At the
same time, fix the
fulcrum shaft of the print head bracket
to the
hooks. While pressing the print head, slide the side
tab
upwards to lock the print head assembly in place.
8. Close the Top Cover.
9. Restore power, reload media, reset the head counter (refer
to
Section 4.12 Factory Clear Mode) and perform a test
print to ensure that the
print head is connected properly.
CAUTION:
EXCERCISE CARE WHEN INSTALLING THE
PRINT HEAD TO ENSURE THAT ITS ELEMENTS
ARE NOT DAMAGED DURING INSTALLATION.
Print head
assembly
2
1
3
1
2
Fulcrum shaft
Circular
recess
Hooks