Yamaha Motif 8 Service Manual

							21 MOTIF6 / MOTIF7
Note: If you remove the adhesive tape to remove
the display assembly, make sure to apply a
tape on the same condition when reinstall-
ing.
15. FPN Circuit Board (Time required: about 14 minutes)
15-1. Remove the bottom assembly. (See Procedure 1)
15-2. Remove the UD circuit board. (See Procedure 2)
15-3. Remove the DM circuit board. (See Procedure 3)
15-4. Remove the DM shield assembly. (See procedure
10-4)
15-5. As for MOTIF 7, remove the power supply assem-
bly. (See procedure 7)
15-6.Remove the keyboard assembly. (See procedure 10)
15-7. Remove the five (5) screws (six screws as for
MOTIF 7) marked [54]. The FPN circuit board can
then be removed. (Fig. 8)
As for MOTIF 7, it can be removed with the center
angle (B).
16. Wheel Assembly (Time required: about 5
minutes)
16-1. Remove the bottom assembly. (See Procedure 1)
16-2. Remove the four (4) screws marked [42]. The
wheel assembly can then be removed. (Fig. 7)
17.
Side Panel-L Assembly (Time required: about 15
minutes)
17-1. Remove the bottom assembly. (See Procedure 1)
17-2. Remove the UD circuit board. (See Procedure 2)
17-3. Remove the DM circuit board. (See Procedure 3)
17-4. Remove the DM shield assembly. (See procedure
10-4)
17-5. Remove the JK circuit board. (See procedure 4)
17-6.Remove the keyboard assembly. (See procedure 10)
17-7. Remove the wheel assembly. (See procedure 16)
17-8. Remove the five (5) screws marked [22] and the
screw marked [24]. The side panel-L assembly can
then be removed. (Fig. 4, Fig. 5)
PNC[42]
Wheel Assembly
(Fig.7)
[42] Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) 
						

							22MOTIF6 / MOTIF7
18.
Side Panel-R Assembly (Time required: about 13 minutes)
18-1. Remove the bottom assembly. (See Procedure 1)
18-2. Remove the UD circuit board. (See Procedure 2)
18-3. Remove the DM circuit board. (See Procedure 3)
18-4. Remove the DM shield assembly. (See procedure
10-4)
18-5.Remove the keyboard assembly. (See procedure 10)
18-6. Remove the three (3) screws marked [32] and the
screw marked [34]. The side panel-R assembly can
then be removed. (Fig. 4, Fig. 5)
19.
End Block L (Time required: about 16 minutes)
19-1. Remove the bottom assembly. (See Procedure 1)
19-2. Remove the UD circuit board. (See Procedure 2)
19-3. Remove the DM circuit board. (See Procedure 3)
19-4. Remove the DM shield assembly. (See procedure
10-4)
19-5. Remove the JK circuit board. (See procedure 4)
19-6.Remove the keyboard assembly. (See procedure 10)
19-7. Remove the wheel assembly. (See procedure 16)
19-8.Remove the side panel-L assembly. (See procedure 17)
19-9. Remove the two (2) screws marked [42]. The end
block L can then be removed. (Fig. 5)
20.
PLG Support Assembly (Time required: about 6 minutes)
20-1. Remove the bottom assembly. (See Procedure 1)
20-2. Remove the JK circuit board. (See procedure 4)
20-3. Remove the five (5) screws marked [92]. The PLG
support assembly can then be removed. (Fig. 8)
PNA
PNC
PNB
F-PN [110] [120]
[100]
[34]
[34] [102]
[62]
[92][44]
[44]
[22]
[54]
Display Assembly PLG Support
(Fig.8)
[22] Bind Head Tapping Screw-B 3.0X6   MFZN2BL (EP600230)
[34] Bind Head Tapping Screw-B 3.0X6   MFZN2BL (EP600230)
[44] Bind Head Tapping Screw-B 3.0X6   MFZN2BL (EP600230)
[54] Bind Head Tapping Screw-B 3.0X6   MFZN2BL (EP600230)
[62] Bind Head Tapping Screw-B 3.0X6   MFZN2BL (EP600230)
[92] Bind Head Tapping Screw-B 3.0X6   MFZN2BL (EP600230)
[100] Knob, VR (VB774000)
[102] Knob, VR BLK/RED (V7040700)
[110] Knob (V4322100) 
						

							23 MOTIF8
 DISASSEMBLY PROCEDURE (MOTIF8)
FRONT RAIL ASSEMBLY [490]
[490][490]
[490] [495] [340a] [340a] [330][500]
[330] Bind Head Screw 4.0X16 ZMC2BL (ED340166)
[490] Bind Head Screw-5.0X16 MFZN2BL (VM631300)
[495] Pan Washer Head Screw-5.0X20-14 MFZN2BL (VU148200)
[500] Bind Head Screw-M5X16 MFZN2Y (VP569100)
(Fig.2) Note: Put gloves on to avoid to injure your
hands with edges of the circuit boards or
the frames.
When reassembling, take care not to pinch
the cables between the circuit boards and
the frames.
1. Opening of the Control Panel
(Time required: about 5 minutes)
1-1. Turn the unit upside down. When turning, put two
wooden bolsters under the unit at its both side
ends. (Fig. 1)
1-2. Remove the twenty-two (22) screws marked [490],
the screw marked [495] and the four (4) screws
marked [500]. (Fig. 2)
1-3. Turn the unit forward and turn it up. It is danger-
ous to turn it backward, as the panel may open in
the middle of turning. (Fig. 3)(Fig.1)
OK
NG
(Fig.3) 
						

							24MOTIF8
1-4. Open the control panel, supporting the panel with
the jig stay (V6295700). The angle of the panel can
be adjusted by switching the position to fix the
stay. (Fig. 4)
When you remove the stay due to following some
procedures, put a wooden bolster under the panel at
its rear to avoid to let it fall backward. (Fig. 5)
Note: As the unit is very heavy, make sure to lift it up by
two persons.
1122
Stay (V6295700)(Fig.4)
[280] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[290] Bonding Tapping Screw-B 3.0X10 MFZN2BL (VQ049800)
(Fig.6)
2. UD Circuit Board
(Time required: about 6 minutes)
2-1. Open the control panel. (See procedure 1)
2-2. Remove the screw marked [280] and the two (2)
screws marked [290]. The UD circuit board can
then be removed. (Fig. 6)
Panel Assembly
Wooden bolster
[280][290] [290]
UD
(Fig.5)
12
1
2
Stay
(Fig.4-1)
Opening the panel partly, insert hook of the stay into the slit of
frame outside and raise the panel to open.Stay (V6295700) 
						

							25 MOTIF8
3.
DM Shield Cover (Time required: about 8 minutes)
3-1. Open the control panel. (See procedure 1)
3-2. Remove the fifteen (15) screws marked [480]. The
DM shield cover can then be removed. (Fig. 7)
4.
DM Circuit Board (Time required: about 9 minutes)
4-1. Open the control panel. (See procedure 1)
4-2. Remove the UD circuit board. (See procedure 2)
4-3. Remove the DM shield cover. (See procedure 3)
4-4. Remove the ten (10) screws marked [240]. DM
circuit board can then be removed. (Fig. 8)
5.
Power Switch Assembly (Time required: about 6 minutes)
5-1. Open the control panel. (See procedure 1)
5-2.Remove the two (2) screws marked [40]. The power
switch assembly can then be removed. (Fig. 8)
6.
AC-IN Connector (Time required: about 6 minutes)
6-1. Open the control panel. (See procedure 1)
6-2. Remove the two (2) screws marked [45]. The AC-
IN connector can then be removed. (Fig. 8)
7.
Power Supply Unit (Time required: about 7 minutes)
7-1. Open the control panel. (See procedure 1)
7-2. Remove the six (6) screws marked [410] and the
screw marked [420]. The power supply unit can
then be removed. (Fig. 9)
8.
SM Circuit Board (Time required: about 6 minutes)
8-1. Open the control panel. (See procedure 1)
8-2. Remove the two (2) screws marked [250]. The SM
circuit board can then be removed.
[480] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
(Fig.7)
UDDMJK[480]
DM shield cover
Control panel 
						

							26MOTIF8
9.
JK Circuit Board (Time required: about 7 minutes)
9-1. Open the control panel. (See procedure 1)
9-2. Remove the six (6) screws marked [315] and the
two screws marked [320]. The JK circuit board can
then be removed. (Fig. 8)
10. PLG Angle Assembly, DM Side Angle L, DM
Side Angle R, DM Shield (Time required:
about 12 minutes)
10-1. Open the control panel. (See procedure 1)
10-2. Remove the UD circuit board. (See procedure 2)
10-3. Remove the DM shield cover. (See procedure 3)
10-4. Remove the DM circuit board. (See procedure 4)
10-5. Remove the eleven (11) screws marked [290] and
the two (2) screws marked [300].
The PLG angle assembly, the DM side angle L, the
DM side angle R and the DM shield can then be
removed. (Fig. 11)
Battery
Battery holderBattery VS246400VS246300 (Battery holder for VS246400)
Notice for back-up battery removal
push the battery as shown in figure,
then the battery will pop up.
Druk de batterij naar beneden zoals
aangeven in de tekening, de batterij
springt dan naar voren.
DM
JK
[240] [170]
[170]
[40] [45] [240]
[320] [315]
[80a] [70a]Control panel
AC-IN Connector PSW Assembly
WHEEL ASSEMBLY END BLOCK L
Side Angle  LSide Angle  R
[80b]
[70b] [130]
END BLOCK R
[40] Bonding Tapping Screw-B 3.0X10 MFZN2BL (VQ049800)
[45] Bonding Tapping Screw-B 3.0X10 MFZN2BL (VQ049800)
[70] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[80] Bonding Tapping Screw-B 3.0X10 MFZN2BL (VQ049800)
[130] Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
[170] Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
[240] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[315] Bonding Tapping Screw-B 3.0X6 MFZN2BL (EX602940)
[320] Bonding Tapping Screw-B 3.0X10  MFZN2BL (VQ049800)
(Fig.8) 
						

							27 MOTIF8
11.
DM Shield Angle (Time required: about 14 minutes)
11-1. Open the control panel. (See procedure 1)
11-2. Remove the UD circuit board. (See procedure 2)
11-3. Remove the DM shield cover. (See procedure 3)
11-4. Remove the DM circuit board. (See procedure 4)
11-5. Remove the PLG angle assembly, the DM side
angle L, the DM side angle R and the DM shield.
(See procedure 10)
11-6. Remove the ten screws marked [150]. The DM
shield angle can then be removed. (Fig. 11)
12.
Display Assembly (Time required: about 13 minutes)
12-1. Open the control panel. (See procedure 1)
12-2. Remove the UD circuit board. (See procedure 2)
12-3. Remove the DM shield cover. (See procedure 3)
12-4. Remove the DM circuit board. (See procedure 4)
12-5. Remove the PLG angle assembly, the DM side
angle L, the DM side angle R and the DM shield.
(See procedure 10)
12-6. Remove the five (5) screws marked [130]. The
display assembly can then be removed. (Fig. 12)
Note: If you remove the adhesive tape to remove
the display assembly, make sure to apply a
tape on the same condition when reinstall-
ing.
[410] [420] [380]
[340b]
Power Supply Unit
Keybed Assembly
Keyboard Assembly
[380] [370]
Front Rail Assembly[340b]
[340] Bind Head Tapping Screw-1 3.5X8 MFZN2Y  (VD278600)
[370] Pan Head Screw 5.0X25 MFZN2Y PW (VV040700)
[380] Bind Head Tapping Screw-1 4.0X14 MFZN2Y (EP040236)
[410] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[420] Bind Head Screw-3.0X6 ZMC2Y (ED030066)
(Fig.9) 
						

							28MOTIF8
13.
FPN Circuit Board (Time required: about 15 minutes)
13-1. Open the control panel. (See procedure 1)
13-2. Remove the UD circuit board. (See procedure 2)
13-3. Remove the DM shield cover. (See procedure 3)
13-4. Remove the DM circuit board. (See procedure 4)
13-5. Remove the PLG angle assembly, the DM side
angle L, the DM side angle R and the DM shield.
(See procedure 10)
13-6. Remove the DM shield angle. (See procedure 11)
13-7. Remove the two (2) screws marked [90]. The FPN
circuit board can then be removed. (Fig. 12)
14.
PNA Circuit Board (Time required: about 16 minutes)
14-1. Open the control panel. (See procedure 1)
14-2. Remove the UD circuit board. (See procedure 2)
14-3. Remove the DM shield cover. (See procedure 3)
14-4. Remove the DM circuit board. (See procedure 4)
14-5. Remove the PLG angle assembly, the DM side
angle L, the DM side angle R and the DM shield.
(See procedure 10)
14-6. Remove the DM shield angle. (See procedure 11)
14-7. Remove the nine (9) screws marked [70]. (Fig. 12)
14-8. Remove the four (4) knobs marked [110], the VR knob
marked [102] and the four (4) VR konbs marked [100]
from the outside of the control panel. The PNA circuit
board can then be removed. (Fig. 13)
[290][300] [150]
Control Panel
PLG Angle Assembly DM  SheildDM Shield Angle
[150] Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
[290] Bonding Tapping Screw-B 3.0X6 MFZN2BL (EX602940)
[300] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
(Fig.11)[110]
[100] [102]
(Fig.13) 
						

							29 MOTIF8
15.
PNB Circuit Board (Time required: about 16 minutes)
15-1. Open the control panel. (See procedure 1)
15-2. Remove the UD circuit board. (See procedure 2)
15-3. Remove the DM shield cover. (See procedure 3)
15-4. Remove the DM circuit board. (See procedure 4)
15-5. Remove the PLG angle assembly, the DM side
angle L, the DM side angle R and the DM shield.
(See procedure 10)
15-6. Remove the DM shield angle. (See procedure 11)
15-7. Remove the seven (7) screws marked [110]. (Fig. 12)
15-8. Remove the encoder knob marked [500] from the
outside of the control panel. The PNB circuit
board can then be removed. (Fig. 14)
16.
Wheel Assembly (Time required: about 6 minutes)
16-1. Open the control panel. (See procedure 1)
16-2. Remove the four (4) screws marked [170]. The
wheel assembly can then be removed. (Fig. 8)
17. Side Arm L (Time required: about 1 minute)
17-1. Remove the six (6) screws marked [110a]. The
side arm L can then be removed. (Fig. 15)
F-PN
PNAPNB
[130][90] [70] [110]
Control Panel
Display Assembly
[70] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[90] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[110] Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[130] Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
(Fig.12)
(Fig.14)[500] 
						

							30MOTIF8
18. Side Arm R
(Time required: about 1 minute)
18-1. Remove the six (6) screws marked [110b]. The
side arm R can then be removed. (Fig. 15)
19.
Side Angle L (Time required: about 6 minutes)
19-1. Open the control panel. (See procedure 1)
19-2. Remove the four (4) screws marked [70a] and the
two (2) screws marked [80a]. The side angle L can
then be removed. (Fig. 8)
20.
Side Angle R (Time required: about 6 minutes)
20-1. Open the control panel. (See procedure 1)
20-2. Remove the four (4) screws marked [70b] and the
two (2) screws marked [80b]. The side angle R can
then be removed. (Fig. 8)
21.
End Block L (Time required: about 8 minutes)
21-1. Open the control panel. (See procedure 1)
21-2. Remove the wheel assembly. (See procedure 16)
21-3. Remove the side angle L. (See procedure 19)
21-4. Remove the six (6) screws marked [170]. The end
block L can then be removed. (Fig. 8)
22.
End Block R (Time required: about 6 minutes)
22-1. Open the control panel. (See procedure 1)
22-2. Remove the screw marked [130]. The end block R
can then be removed. (Fig. 8)
[110b]
Keybed Assembly
[110a]
(Fig.15)
[110] Bind Head Screw-5.0X30  MFZN2BL (VB664500)