Yamaha Portatone PSR-VN300 Service-Handbuch - Seite 9

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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. (Fig. 3)

3-4

Remove the back light assembly. (Fig. 3)

3-5

Remove the LCD. (Fig. 3)

* When attaching the rubber connector, set the conductive part to face inside. (Fig. 3)

PNAM Circuit Board (1/3, 2/3, 3/3)

4-1

Remove the lower case assembly. (See procedure 1)

4-2

PNAM Circuit Board 3/3

(Time required: About 2 minutes)

4-2-1 Remove the volume knob from the control panel surface. (Fig. 1, 4)

4-2-2 Remove the three (3) screws marked [150A]. The PNAM circuit board 3/3 can then be removed. (Fig. 2)

4-3

PNAM Circuit Board 1/3

(Time required: About 3 minutes)

4-3-1 Remove the PNAM circuit board 3/3. (See procedure 4-2)

4-3-2 Remove the twelve (12) screws marked [150B]. The PNAM circuit board 1/3 can then be removed. (Fig. 2)

4-4

PNAM circuit board (2/3)

(Time required: About 3 minutes)

4-4-1 Remove the nine (9) screws marked [150C]. The PNAM circuit board 2/3 can then be removed. (Fig. 2)

Speaker (Time required: About 3 minutes)

5-1

Remove the lower case assembly. (See procedure 1)

5-2

Remove the four (4) screws marked [30]. The speaker can then be removed. (Fig. 2)

* The right and left speakers can be removed in the same manner.

SP Grille (Time required: About 3 minutes)

6-1

Remove the lower case assembly. (See procedure 1)

6-2

Align the four (4) [A]s the groove in the upper case assembly and remove the SP grille. (Fig. 2)

* The right and left SP grilles can be removed in the same manner.

Lower Case Keyboard Assembly

(Time required: About 2 minutes)

7-1

Remove the lower case assembly. (See procedure 1)

7-2

Remove the two (2) screws marked [240C] and screw marked [270B].

The lower case keyboard assembly can then be removed. (Fig. 2)

PSR-VN300