Epson MX-80 Technical Manual page 47

(2) Dismounting print head unit
The print head in the print head unit is the life and soul of the MX-80 and has a service
life of approx. 100 million characters. If it is necessary to replace the print head due to an
accident, etc., the print head unit can be dismounted very easily from the M-321
a
printer
mechanism as follows.(See FiQ. 3.9.)
STEP 1. Manually move the print head unit to the right end.
STEP 2. Remove the head cable (FPC) from the connector on the terminal board.
STEP 3. Turn the head lock lever clockwise and lift and remove the print head unit.
Head Lock Lever
Carriage Assembly
Print Head
/Head Cable
. /
Fig. 3.9 Dismounting of Print Head Unit
(3) Dismounting of home position sensor assembly
Print Head Unit
Dismount the home position sensor assembly from the M-321
a
printer mechanism as
follows.
STEP 1. Unsolder the three lead wires of the home pOSition sensor assembly from the
terminal board. (See Fig. 3.10.)
STEP 2. Remove the cup screw (M2.5
x
4) and retaining ring RE (2.3) securing the
home position sensor assembly. (See Fig. 3.10.)
STEP 3. Remove the home position sensor assembly.
CS (M2.5x 4)
t
~
RE (2.3)
~l--..)--Home
position sensor assy
~~~yy:elll~::
f
Red
,
.
Fig. 3.10 Dismounting of Home Position Sensor Assy
REV. A 3-10