Djk Circuit Board; Ac Upper Frame Assembly; Power Supply Unit; Ac Lower Frame Assembly - Yamaha Tyros3 Service Manual

Tyros3
• Rear View
LOWER CASE UNIT
• Top View
SPOL
HP
[S03H]
3.

DJK Circuit Board

(Time Required: About 10 minutes)
3-1 Separate the upper case unit and lower case unit.
(See procedure 1.)
3-2 Remove the DM circuit board. (See procedure 2.)
3-3 Remove the three (3) screws marked [S03B], eight (8)
screws marked [S04A] and two (2) hexagonal lock
screws marked [S21]. The DJK circuit board can then
be removed. (Fig. 5)
4.

AC Upper Frame Assembly

(Time Required: about 6 minutes)
4-1 Separate the upper case unit and lower case unit. (See
procedure 1.)
4-2 Remove the two (2) screws marked [S03C]. The AC
upper frame assembly can then be removed. (Fig. 2)
14
KNOB VR (LINE IN/MIC [TRIM])
[S04D]
[S04B] [S04B]
[S03F]
[S03G]
[S03]: BIND HEAD TAPPING SCREW-B 3.0X8 MFZN2W3 (WE774301)
[S04]: BIND HEAD TAPPING SCREW-B 3.0X10 MFZN2B3 (WE972200)
[S21]: HEXAGONAL LOCK SCREW HFS-4S-B1WM (V7569300)
[S04A] [S21]
AJK
CK
[S03B]
Fig. 5
5.

Power Supply Unit

(Time Required: About 7 minutes)
5-1 Separate the upper case unit and lower case unit.
(See procedure 1.)
5-2 Remove the AC upper frame assembly. (See procedure 4.)
5-3 Remove the six (6) screws marked [S03D]. The power
supply unit can then be removed. (Fig. 4)
* No cord should be connected to the CN4 of the
power supply unit. Pay attention to connection
during installment. (Fig. 4)
6.

AC Lower Frame Assembly

(Time Required: about 7 minutes)
6-1 Separate the upper case unit and lower case unit. (See
procedure 1.)
6-2 Remove the AC upper frame assembly. (See procedure 4.)
6-3 Remove the two (4) screws marked [S03E] and the
screw marked [S11]. The AC lower frame assembly can
then be removed with the power supply unit on it. (Fig. 4)
* No cord should be connected to the CN4 of the
power supply unit. Pay attention to connection
during installment. (Fig. 4)
[S04D]
[S04A]
DJK
HARD DISK DRIVE UNIT
SPOR
HDSB
[S03I]