Pnls Circuit Board; Micvr Circuit Board; Usb Circuit Board; Wheel Assembly (Pitch Bend, Modulation) - Yamaha Tyros3 Service Manual

• Bottom View
WHEEL ASSEMBLY
(MODULATION)
WHEEL ASSEMBLY
(PITCH BEND)
[S05N]
[S05L]
MICVR
LCD Hook
Fig. 10
17.

PNLS Circuit Board

(Time Required: About 6 minutes)
17-1 Separate the upper case unit and lower case unit.
(See procedure 1.)
17-2 Remove the four (4) screws marked [S05K]. The PNLS
circuit board can then be removed. (Fig. 6)
18.

MICVR Circuit Board

(Time Required: About 6 minutes)
18-1 Remove the VR knob (INPUT VOLUME) and the
MASTER VOLUME knob from the control panel. (Fig. 1)
18-2 Separate the upper case unit and lower case unit.
(See procedure 1.)
18-3 Remove the five (5) screws marked [S05L]. The
MICVR circuit board can then be removed. (Fig. 9)
UPPER CASE UNIT
[S05N]
[S05]: BIND HEAD TAPPING SCREW-B 3.0X10 MFZN2W3 (WE774200)

LCD UNIT

LCD UNIT
EN
PNC
ENC ASSEMBLY
[S05E]
PANEL STAY B
[S05C] LCD UNIT
[S05D]
Fig. 9
19.

USB Circuit Board

(Time Required: About 6 minutes)
19-1 Separate the upper case unit and lower case unit.
(See procedure 1.)
19-2 Remove the four (4) screws marked [S05M]. The USB
circuit board can then be removed. (Fig. 9)
20.

Wheel Assembly (PITCH BEND, MODULATION)

(Time Required: About 6 minutes)
20-1 Separate the upper case unit and lower case unit
(See procedure 1).
20-2 Remove the two (2) screws marked [S05N]. The wheel
assembly (PITCH BEND) can then be removed. (Fig. 9)
* The wheel assembly (MODULATION) can be removed
in the same way.
21. LCD Unit
21-1 Separate the upper case unit and lower case unit.
(See procedure 1.)
21-2 Remove the two (2) screws marked [S05O]. The stay
hinge assembly can then be removed. (Fig. 11)
21-3 Remove the four (4) screws marked [S05P] and the
screw marked [S05G]. (Fig. 9, 11)
21-4 Turn the front side of the upper case unit upward.
* Disconnect the connector assemblies of the LCD
unit in advance.
21-5 Release the lock at the back of the LCD unit, raise the
LCD unit and remove the two (2) dust proof cloths.
(Fig. 10, 12)
21-6 Tip the LCD unit until it is at an angle shown in Fig. 13,
lift it a little and then pull it out obliquely upward. (Fig. 13)
[S05F] [S05G]
(Time Required: About 7 minutes)
Tyros3
[S05M]
USB
[S05M]
17