Service manual

[Cautions to be taken when reinstalling]
1. Adjusting the HEAD position
Whenever the THERMAL HEAD
is replaced with a new
one, adjust its position for the HEAD FRAME
.
• Procedure:
1) The screw hole for fixing the THERMAL HEAD
in
the HEAD FRAME
is made a slot as shown in the
figure below. First, align the screw hole in the THER-
MAL HEAD
with the bottom area of the slot and
temporarily secure it with the SCREW
.
2) Install the HEAD FRAME UNIT
on the HOUSING
.
3) Adjust the HEAD position and make sure that heating
element of the HEAD
is most properly positioned,
by performing a printing test. Do not adjust the Head
position during printing; otherwise the HEAD might
break down due to friction.
<Procedure for adjusting HEAD position>
(1) Insert a flat-bladed screwdriver into the adjust-
ment hole C in the HEAD FRAME
. Adjust the
HEAD upward little by little with the screwdriver
until it reaches the desired position, and secure it
with the SCREW
(tightening torque: 6.5 kgf-
cm).
4) If there is a difference in darkness in print between the
receipt and journal, insert the angle A’s spacer into
the gap between the HEAD FRAME unit and the ther-
mal head as shown in the figure below.
2. Direction of H-SPRING
Install the H-SPRINGs so that the hooks point outward.
Fig. 7
3. HEAD cable
Install the 9-pin connector to the right end of the THERMAL
HEAD
and the 10-pin connector to the left end.
Use caution to make a good connection or a deformed con-
nector when connecting the THERMAL HEAD
and HEAD
cables.
Fig. 8
4. Installing HEAD UP LEVER and H-SPRING ("J" side)
1)
2)
3)
Fig. 9
HEAD FRAME unit
1
1
The number of pins on the
PWB unit:10P
The number of pins on the
PWB unit:9P
4
5
6
4
B
C
B
C
1
2
H-SPRING ("J" side)
3
1
2