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電子キーボード Yamaha Portatone YPT-300のPDF サービスマニュアルをオンラインで閲覧またはダウンロードできます。Yamaha Portatone YPT-300 36 ページ。

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DISASSEMBLY PROCEDURE

Caution: Be sure to attach the removed filament tape just as it was before removal.

Lower Case Assembly

(Time required: About 1 minute)

1-1

Remove the five (5) screws marked [240A], two (2)

screws marked [270A], and two (2) screws marked

[320]. The lower case assembly can then be

removed. (Fig. 1)

DMLCD circuit board

(Time required: About 3 minutes)

2-1

Remove the lower case assembly. (See procedure 1)

2-2

Remove the eight (8) screws marked [240B]. The

DMLCD circuit board can then be removed. (Fig. 2)

Bottom view

[240A]

[320]

Top view

Speaker Grille L

Lower Case Assembly

[270A]

[240A]

Lower Case Keyboard Assembly

Knob (Master Volume)

[240]: Bind Head Tapping Screw-B 3.0X12 MFZN2Y (VE683000)

[270]: Bind Head Tapping Screw-B 3.0X30 MFZN2Y (V7213700)

[320]: Bind Head Tapping Screw-B 3.0X20 MFZN2Y (VI064600)

(Fig.1)

∗

When installing the DMLCD circuit board, tighten

the screws 1 through 8 in numerical order. (Fig. 2)

∗

If the DMLCD circuit board is replaced, execute the

"Factory Set" in the test program.

LCD

(Time required: About 3 minutes)

3-1

Remove the lower case assembly. (See procedure 1)

3-2

Remove the DMLCD circuit board. (See procedure 2)

3-3

Remove the LCD holder and rubber connector.

3-4

Remove the back light assembly. (Fig. 4)

3-5

Remove the LCD. (Fig. 4)

∗

When attaching the rubber connector, set the

conductive part to face inside. (Fig. 4)

[270A]

Battery Lid Assembly

Speaker Grille R

PSR-E303/YPT-300

[240A]

[320]