22
HP-555G
Nov. 1998
Removing PA-4A key
While holding the front end of the key, insert the tip of long-nose
pliers into the U-groove on the shaft side(shaded area in Fig.1) and
hold down the key in the direction of arrow A.
Installing the PA-4A key
While placing the front inner wall of the key against the guide, pass
the foot through the hole of the chassis, as shown in Fig.2. Then
press the dotted area of the key in the direction of arrow.
KEYBOARD DISASSEMBLY
Installing the PA-4A board
As shown in Fig.3, place the board against the hook part a of the
sub-shassis, and screw the board into the sub-shassis.
Screw in order, from the round hole(positioning hole) on the
connector side.
Be sure to screw manually. (Care should be taken to avoid screw
damage.)
Greasing points
After the key or hammer has been replaced, the specified grease
must be applied to the following 4 points as shown in Fig.4.
Fig.4
1. Froir GP-1RS....gray (PNo. 17049544)
(a) Key and hammer bearing section
(b) Key and hammer joint section (actuator section)
2. Froir G-336A....white (PNo. 17049543)
(a) Side of guide bushing for white key and black key
Fig.1
Fig.2
Fig.3
Fig.4
1-a
2-a
1-b
