PSR-A1000
10
12.
VR, ENC, PN1, PN2, PN3, PN4 Circuit
Boards and LCD
12-1
Remove the lower case assembly. (See procedure 1.)
12-2
Remove the INV circuit board. (See procedure 5.)
12-3
Remove the shield cover L, the DM circuit board and the
shield cover U. (See procedure 6.)
12-4
Remove the AM circuit board. (See procedure 7.)
12-5
VR Circuit Board
(Time required: About 20 minutes) :
12-5-1 Remove the volume knob from the control panel side. (Fig. 6)
12-5-2 Remove the three (3) screws marked [270F]. The VR cir-
cuit board can then be removed. (Fig. 6)
*
When you install the VR circuit board, tighten the screws
in order as shown in Figure 6.
12-6
ENC Circuit Board
(Time required: About 20 minutes) :
12-6-1 Remove the encoder knob from the control panel side. (Fig. 8)
12-6-2 Remove the hexagonal nut marked [A]. The ENC circuit
board can then be removed. (Fig. 7, 9)
12-7
PN1 Circuit Board
(Time required: About 25 minutes) :
12-7-1 Remove the keyboard assembly. (See procedure 8.)
12-7-2 Remove the two (2) screws marked [520B]. The panel angle
blacket can then be removed. (Fig. 7)
12-7-3 Remove the two (2) screws marked [520C]. The keyboard
support (A) can then be removed. (Fig. 7)
12-7-4 Remove the fifteen (15) screws marked [520D]. The PN1
circuit board can then be removed. (Fig. 7)
12-8
PN2 Circuit Board
(Time required: About 25 minutes) :
12-8-1 Remove the keyboard assembly. (See procedure 8.)
12-8-2 Remove the two (2) screws marked [520E]. The DM holder
can then be removed. (Fig. 7)
12-8-3 Remove the seven (7) screws marked [520F]. The PN2 cir-
cuit board can then be removed. (Fig. 7)
12-9
PN3 Circuit board
(Time required: About 25 minutes) :
12-9-1 Remove the keyboard assembly. (See procedure 8.)
12-9-2 Remove the three (3) screws marked [520G]. The keyboard
support (B) can then be removed. (Fig. 7)
12-9-3 Remove the seventeen (17) screws marked [520H]. The PN3
circuit board can then be removed. (Fig. 7)
ENC
[A]
(Fig. 8)
(Fig. 9)
Encoder knob
[520C]
[520C]
[520D]
[520B]
[520D]
[520B]
[520D]
[520H]
[520H]
[520F]
[520F]
[520G]
[520H]
[270F]
[520H] [520I]
[520I]
[520E]
[520J]
Keyboard support (A)
Keyboard support (B)
Panel angle bracket
DM holder
[270F]: Bind Head Tapping Screw-P 3.0x8 MFZN2Y (EP600280)
[520]: Bind Head Tapping Screw-P 3.0x8 MFZN2Y (EP600280)
(Fig. 7)
VR
LCD
PN4
[520H]
PN1
PN2
PN3
[520D]
ENC
(Fig. 6)
Volume knob
VR
[270F]
[270F]
[270F]: Bind Head Tapping Screw-P 3.0x8 MFZN2Y (EP600280)
This screwing would be first.
