PSR-550
11
7.
PN 1/5 Circuit Board
(Time required : About 20 min.)
7-1.
Remove the lower case assembly. (See procedure 1)
7-2.
Remove the DM circuit board and the shield box
U and L. (See procedure 3)
7-3.
Remove the floppy disk drive assembly. (See
procedure 4)
7-4.
Remove the AM circuit board. (See procedure 5)
7-5.
Remove the PN 4/5 circuit board. (See procedure 6)
7-6.
Remove the twenty-five (25) screws marked
[420D]. The PN 1/5 circuit board can then be
removed. (Fig. 6)
8.
PN 2/5 Circuit Board
(Time required : About 15 min.)
8-1.
Remove the lower case assembly. (See procedure 1)
8-2.
Remove the DM circuit board and the shield box
U and L. (See procedure 3)
8-3.
Remove the AM circuit board. (See procedure 5)
8-4.
Remove the encoder knob from the control panel
side. (Fig. 8)
8-5.
Remove the three (3) screws marked [420E]. The
PN 2/5 circuit board can then be removed. (Fig. 6)
PN 5/5
[420] : Bind Head Tapping Screw-P
3.0X8
MFZN2Y
(EP600280)
(Fig.6)
[420D]
[420D]
[420D]
[420E]
[420D]
[420D]
[420C]
[420D]
[420F]
Wheel Assembly
[420G]
PN 4/5
PN 1/5
PN 5/5
(Fig.7)
(Fig.8)
6.
PN 4/5 Circuit Board
(Time required : About 15 min.)
6-1.
Remove the lower case assembly. (See procedure 1)
6-2.
Remove the DM circuit board and the shild box U
and L. (See procedure 3)
6-3.
Remove the AM circuit board. (See procedure 5)
6-4.
Remove the volume knob from the control panel
side. (Fig. 7)
6-5.
Remove the three (3) screws marked [420C]. The
PN 4/5 circuit board can then be removed. (Fig. 6)
9.
PN 3/5 Circuit Board
(Time required : About 5 min.)
9-1.
Remove the lower case assembly. (See procedure 1)
9-2.
Remove the two (2) screws marked [420F]. The
PN 3/5 circuit board can then be removed with the
wheel assembly. (Fig. 6)
10.
PN 5/5 Circuit Board
(Time required : About 5 min.)
10-1.
Remove the lower case assembly. (See procedure 1)
10-2.
Remove the two (2) screws marked [420G]. The
PN 5/5 circuit board can then be removed. (Fig. 6)
Volume Knob
Encoder Knob
PN 2/5
PN 3/5
