Yamaha DGX-220 [12/52] Am amjk 1 6 amjk 4 6 and amjk 5 6 circuit boards time required about 6 minutes

DGX-220/YPG-225

6. AM (AMJK 1/6), AMJK 4/6 and AMJK 5/6 Circuit

Boards

(Time required: About 6 minutes)

* The AMJK 4/6 and AMJK 5/6 circuit boards are connected to the

AM (AMJK 1/6) circuit board via wirings.

6-1 Remove the lower case assembly. (See procedure 1.)

6-2 Remove the master volume knob from the control panel. (Fig.8)

6-3 Remove three (3) screws marked [180D]. The AMJK 4/6 circuit

board can then be removed from the upper case. (Fig.6)

6-4 Remove two (2) screws marked [180E]. The AMJK 5/6 circuit board

can then be removed from the upper case. (Fig.6)

6-5 Remove seven (7) screws marked [180F]. The AM(AMJK 1/6),

AMJK 4/6 and AMJK 5/6 circuit boards can then be removed. (Fig.6)

8. PNL(PN 3/5) Circuit Board

(Time required: About 8 minutes)

8-1 Remove the lower case assembly. (See procedure 1.)

8-2 Remove the AM(AMJK 1/6), AMJK 4/6 and AMJK 5/6 circuit boards. (See procedure 6.)

8-3 Remove ten (10) screws marked [180G]. The PNL (PN 3/5) circuit board can then be removed. (Fig.10)

(Fig.10)

[180]: Bind Head Tapping Screw-B 3.0X8 MFZN2W3 (WE774300)

MASTER VOLUME

Cloth

Encoder knob

Cloth

(Fig.8)

(Fig.9)

[180G]

PNL

Upper case

(PN 3/5)

7. PNR (PN 1/5) and PN 2/5 Circuit Boards

(Time required: About 6 minutes)

* The PN 2/5 circuit board is connected to the PNR (PN 1/5) circuit

board via a wiring.

7-1 Remove the lower case assembly. (See procedure 1.)

7-2 Remove the encoder knob from the control panel. (Fig.9)

7-3 Remove four (4) screws marked [180H]. The PN 2/5 circuit board

can then be removed from the upper case. (Fig.6)

7-4 Remove twelve (12) screws marked [180I]. The PNR (PN 1/5) and

PN 2/5 circuit boards can then be removed. (Fig.6)