Separating The Unit Into The Upper Case Assembly And The Lower Case Assembly; Dm Circuit Board; Djk Circuit Board; Dac2A Circuit Board - Yamaha TYROS 2 Service Manual

Tyros2
1. Separating the Unit into the Upper Case
Assembly and the Lower Case Assembly
(Time required: About 3 minutes)
1-1 Remove the twenty one (21) screws marked [120].
(Fig.1)
1-2 Remove the six (6) screws marked [130]. (Fig.1)
1-3 Lay the unit right side up, lift the rear of the upper case
assembly and pull it diagonally downward to remove.
(Fig.2)
* When installing the unit, tighten the six (6) screws
marked [130] first, and then tighten the screws marked
[120].
[120]
[120]
2.

DM Circuit Board

(Time required: About 7 minutes)
2-1 Separate the main into the upper case assembly and the
lower case assembly. (See procedure 1.)
14
[110]
[130]
[100]: Bonding Screw 3.0X8 MFZN2B3 (WE997500)
[110]: Truss Head Tapping Screw-B 4.0X12 MFZN2B3 (WF010600)
[120]: Bind Head Tapping Screw-B 4.0X12 MFZN2B3 (WE998600)
[130]: Bind Head Tapping Screw-B 3.0X12 MFZN2B3 (WE998100)
(Fig.2)
2-2 Remove the thirty one (31) screws marked [240]. The
shield upper cover can then be removed. (Fig.3)
* There are some products for which the shield upper
cover has not been used.
2-3 Remove the four (4) screws marked [610]. The DM
circuit board can then be removed. (Fig.4)
* When installing the shield upper cover, insert the two
projections of the shield lower cover into the positioning
holes of the DM circuit board first. (Fig.4)
[120]
[130]
[120]
(Fig.1)
3.

DJK Circuit Board

(Time required: About 9 minutes)
3-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1.)
3-2 Remove the DM circuit board. (See procedure 2.)
3-3 Remove the three (3) screws marked [530E], the eight
(8) screws marked [540A] and the two (2) hexagonal
locking screws marked [130].
The DJK circuit board can then be removed. (Fig.4,
Fig.5)
4. DAC2 Circuit Board
(Time required: About 8 minutes)
4-1 Separate the unit into the upper case assembly and the
lower case assembly. (See procedure 1.)
4-2 Remove the DM circuit board. (See procedure 2.)
4-3 Remove the four (4) screws marked [530E]. The DAC2
circuit board can then be removed. (Fig.5)
[120]
[110]
[100A]
HDD Cover
[120]
MO
TR
OWNE
BEDIE
MODE