Yamaha Ls 9 Service Manual

							
21
LS9-16/LS9-32

• LS9-16
  LCD assembly 16¢LCD Ass’y 16£
• LS9-32
  LCD assembly 32¢LCD Ass’y 32£
PNDA
PNMS
INV
ENC

LCD¢÷	¥ÃŸµÓè £ 
						

							LS9-16/LS9-32
22
 DISASSEMBLY PROCEDURE¢
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Photo 1
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Precautions
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*   Install the fi lament tape and the harness clamp in the 
same way as they were before removal.
*   After replacing the FD and FD2 circuit boards, be sure 
to calibrate the faders. (See page 183.)
*   MAC (Media Access Control) address is stored in the 
CPU circuit board. If the CPU circuit board is replaced, 
MAC address will be changed.
*   Notes on Flat Cable 
  Contacts are visible from the back. Pay attention not to 
insert and install the cable to the connector inversely. 
(Photo 1)
Front Side
¢
¯Ø£Back Side
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1.  Side Panels L, R
¢± ÅÍÉç-z3£  .................................................................................................................................................
23
2.  Control Panel Assembly 16 (LS9-16), Control Panel Assembly 32 (LS9-32)
 
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24
A.  LS9-16 Disassembly Procedure of Bottom Assembly Section 
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26
A-1.  CPU Circuit Board
¢$16³”Ä£ ..........................................................................................................................................................
26
A-2.  Replacing the Lithium Battery
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27
A-3.  HAAD2 (1/2, 2/2) Circuit Boards
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27
A-4.  JK Circuit Board
¢+,³”Ä£ ................................................................................................................................................................
28
A-5.  DA Circuit Board
¢%³”Ä£ ...............................................................................................................................................................
28
A-6.  PHN Circuit Board
¢1)/³”Ä£ ..........................................................................................................................................................
29
A-7.  DCD Circuit Board
¢%$%³”Ä£ ..........................................................................................................................................................
30
A-8.  DSP Circuit Board
¢%41³”Ä£ ...........................................................................................................................................................
30
A-9.  AC Top Shield, AC Bottom Shield, ACIN Circuit Board, AC Inlet Assembly
 
¢$³”çÅÄ¿Óz$³”çÅØÄÜz$*/³”Äz ïè¿ÄTTZ£ ......................................................................................
30
A-10.  Power Supply Unit
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31
A-11.  DC Shield Assembly 16, DCA Circuit Board
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32
A-12.  Duct Assembly 16, DC Fan Motor
 .........................................................................................
32
B.  LS9-16 Disassembly Procedure of Control Panel Assembly 
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33
B-1.  LCD Assembly 16
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33
B-2.  FD Circuit Board
¢%³”Ä£ ................................................................................................................................................................
34
B-3.  PNIN Circuit Board
¢1/*/³”Ä£ ........................................................................................................................................................
35
B-4.  STIN1 Circuit Board, STIN2 Circuit Board
¢45*/³”Äz45*/³”Ä£ .........................................................................................
36
C.  LS9-32 Disassembly Procedure of Bottom Assembly Section 
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38
C-1.  CPU Circuit Board
¢$16³”Ä£ ..........................................................................................................................................................
38
C-2.  Replacing the Lithium Battery
¢æ½¢Ü?‘w¦õ£ ........................................................................................................................
38
C-3.  HAAD2 (1/4~4/4) Circuit Boards
¢)%¢ ™ £³”Ä£ ............................................................................................................
38
C-4.  LAMP Circuit Board
¢-.1³”Ä£ .....................................................................................................................................................
40
C-5.  JK Circuit Board
¢+,³”Ä£ ................................................................................................................................................................
40
C-6.  DA (1/2, 2/2) Circuit Boards
¢%¢z£³”Ä£ ............................................................................................................................
40
C-7.  DCD Circuit Board
¢%$%³”Ä£ ..........................................................................................................................................................
41
C-8.  PHN Circuit Board
¢1)/³”Ä£ ..........................................................................................................................................................
41
C-9.  DSP32 Circuit Board
¢%41³”Ä£ ...................................................................................................................................................
42
C-10.  ACIN Circuit Board, AC Inlet Assembly, AC Bottom Shield 32
¢$*/³”Äz ïè¿ÄTTZz$³”çÅ
						

							23 LS9-16/LS9-32
[32A]: Bind Head Tapping Screw-S
¢4» Ä´#*/%£4.0X20 MFZN2B3 (WE995800)
[42A]: Bind Head Tapping Screw-S
¢4» Ä´#*/%£4.0X20 MFZN2B3 (WE995800)
Fig. 1
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1.  Side Panels L, R
 
(Time required: About 1 minute each)
1-1  Side Panel L:
1-1-1 Remove the four (4) screws marked [32A]. The 
side panel L can then be removed. (Fig. 1)
1-2  Side Panel R:
1-2-1 Remove the four (4) screws marked [42A]. The 
side panel R can then be removed. (Fig. 1)
[32A]
[42A]


Side Panel L
¢± ÅÍÉç-£Side Panel R
¢± ÅÍÉç3£
Fig. 2
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Control panel stay L
¢¯ïÍɵ”-£Control panel stay R
¢¯ïÍɵ”3£
  *  Before proceeding to procedures 2, prepare 
control panel stays L and R (tools for fi xing the 
control panels) in advance. (Fig. 2, Photo 2)
  • Control panel stay L  (WJ724100)
  • Control panel stay R (WJ724200)
Photo 2
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123
• Installing the control panel stay L
The control panel stays R and L can be used at either 
side (interchangeable). 

 
						

							LS9-16/LS9-32
24
2.  Control Panel Assembly 16 (LS9-16) 
(Time required: About 4 minutes), 
  Control Panel Assembly 32 (LS9-32) 
(Time required: About 5 minutes) 
2-1 Remove the side panels L and R. (See Procedure 1)
2-2 LS9-16: Remove the four (4) screws marked [22A], 
eight (8) screws marked [22B], and three 
(3) screws marked [22C]. (Fig. 3-1)
 LS9-32: Remove the seven (7) screws marked 
[22D], eight (8) screws marked [22E], and 
six (6) screws marked [22F]. (Fig. 3-2)
2-3  Lift the control panel assembly 16 of the LS9-16 or 
the control panel assembly 32 of the LS9-32 from 
the rear side and fi x it with the control panel stays 
L and R. (Photo 3-1, Photo 3-2)
  *   To remove the control panel assembly 16 
(LS9-16) or the control panel assembly 32 
(LS9-32), disconnect the connector assembly 
first and then lift the control panel assembly 
vertically. 
  *   Tighten the screws in the order mentioned 
below when installing the control panel 
assembly 16 (LS9-16) or the control panel 
assembly 32 (LS9-32).
   LS9-16: Tighten the four (4) screws marked 
[22A], 
/ eight (8) screws marked [22B], 
/ then three (3) screws marked [22C]. 
(Fig. 3-1)
   LS9-32: Tighten the seven (7) screws marked 
[22D], 
/ eight (8) screws marked [22E], 
/ then six (6) screws marked [22F]. 
(Fig. 3-2)
Control panel assembly 16
¢¯ïÍÉAssy 16£
Control panel assembly 16
¢¯ïÍÉAssy 16£ LCD assembly 16
¢-$%
Assy 16£
Control panel stay L
¢¯ïÍɵ”L£Control panel stay R
¢¯ïÍɵ”R£Control panel stay L
¢¯ïÍɵ”L£
Control panel assembly 32
¢¯ïÍÉAssy 32£Control panel assembly 32
¢¯ïÍÉAssy 32£
LCD assembly 32
¢-$%
Assy 32£
Control panel stay L
¢¯ïÍɵ”L£Control panel stay R
¢¯ïÍɵ”R£
Control panel stay L
¢¯ïÍɵ”L£
Photo 3-1
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Photo 3-2
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• LS9-16
• LS9-32

¯ïÍÉTTZ
¢-4£
						

							25 LS9-16/LS9-32
[22]: Bonding Tapping Screw-S
¢4» Ä´#0/%£3.0X6 MFZN2B3 (WE978000)
[22]: Bonding Tapping Screw-S
¢4» Ä´#0/%£3.0X6 MFZN2B3 (WE978000) Fig. 3-1
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● LS9-16
● LS9-32
Fig. 3-2
¢
$£
[22B]


Bottom assembly 16
¢ØÄÜAss’y 16£Bottom assembly 16
¢ØÄÜAss’y 16£
[22A][22A] [22C][22C]
[22B]
Control panel assembly 16
¢¯ïÍÉAss’y 16£



[22E]
Bottom assembly 32
¢ØÄÜAss’y 32£Bottom assembly 32
¢ØÄÜAss’y 32£
Control panel assembly 32
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[22D] [22F]
[22E] 
						

							LS9-16/LS9-32
26
A.  LS9-16 Disassembly Procedure of Bottom Assembly Section

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A-1.  CPU Circuit Board 
  (Time required: About 5 minutes)
A-1-1 
Remove the side panels L and R. (See procedure 1)
A-1-2  Remove the control panel assembly 16. 
  (See procedure 2)
A-1-3 Remove the two (2) screws marked [322A] and 
two (2) screws marked [322B]. The CPU circuit 
board can then be removed. (Fig. 4)
 * 
MAC (Media Access Control) address is stored 
in the CPU circuit board. If the CPU circuit board 
is replaced, MAC address will be changed.
Fig. 4
¢
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¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[322]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[362]: Bonding Tapping Screw-B
¢#» Ä´#0/%£3.0X8 MFZN2B3 (WE774100)
[364]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[372A]: Bonding Tapping Screw-B
¢#» Ä´#0/%£3.0X8 MFZN2B3 (WE774100)
[374A]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[382A]: Bonding Tapping Screw-B
¢#» Ä´#*/%£3.0X8 MFZN2B3 (WE774100)
[384A]:  Bind Head Screw
¢	–É´´#*/%£3.0X6 MFZN2B3 (WE878300)
[386A]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
Power supply unit
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$BCMF
IPMEFS
$
¢
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BOHMF
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JK
DA
CPUDSP
HAAD2(1/2)
PHN
DCD
[364A] [364B]
[52A] [364A]
[386A]
[374A]
HAAD2(2/2) [322B]
CPU support A
¢$16±Ù”Ä£
CPU
DSP[322A]

JK
DA
[384A][372A] x 16[362A] x 16
[362B] x 16
[382A]
HAAD2(2/2)
HAAD2(1/2)

 $16
						

							27 LS9-16/LS9-32
Photo 4
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A-2.  Replacing the lithium battery 
  (Time required: About 4 minutes)
A-2-1 
Remove the side panels L and R. (See procedure 1)
A-2-2 Fix the control panel assembly 16. (See procedure 2)
A-2-3 The lithium battery on the CPU circuit board can 
be replaced. (Photo 4)
   *  The lithium battery is not part of the CPU 
circuit board. When replacing the CPU circuit 
board, remove the lithium battery from the CPU 
circuit board, and install it on the new circuit 
board.
   *  Before replacing the lithium battery, be sure to 
save all the internal setting data in on a USB 
memory. (See page 158.) 
Battery VN103500 Lithium Battery¢æ½¢Ü?‘£VN103600(Battery holder for VN103500)
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.
Battery
Battery holder
Lithium battery
¢æ½¢Ü?‘£
CPU
A-3.  HAAD2 (1/2, 2/2) Circuit Boards
A-3-1 Remove the side panels L and R. (See procedure 1)
A-3-2 Fix the control panel assembly 16. (See procedure 2)
A-3-3  HAAD2 (1/2) Circuit Board 
  (Time required: About 7 minutes):
A-3-3-1 Remove the sixteen (16) screws marked [362A] 
and two (2) screws marked [364A]. The HAAD2 
(1/2) circuit board can then be removed. (Fig. 4)
A-3-4  HAAD2 (2/2) Circuit Board 
  (Time required: About 10 minutes):
A-3-4-1 Remove the HAAD2 (1/2) circuit board. 
 (See procedure A-3-3)
A-3-4-2 Remove the sixteen (16) screws marked [362B], 
two (2) screws marked [364B], and two (2) screws 
marked [52A]. The HA angle and HAAD2 (2/2) 
circuit board can then be removed. (Fig. 4)
  *   The HAAD2 (1/2) circuit board and HAAD2 
(2/2) circuit board are used for the following 
channels:
    · HAAD2 (1/2) circuit board: INPUT CH 1 – 8
    · HAAD2 (2/2) circuit board: INPUT CH 9 – 16

 
						

							LS9-16/LS9-32
28
Photo 5
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Soldered
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&BSUI
TIFFU
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¢ž”µ³”Ä %£Soldered side¢
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DA
A-4.  JK Circuit Board
  
(Time required: About 5 minutes)
A-4-1 
Remove the side panels L and R. (See procedure 1)
A-4-2 Fix the control panel assembly 16. (See procedure 2)
A-4-3 Remove the two (2) screws marked [386A]. (Fig. 4)
A-4-4  Remove the three (3) screws marked [382A] and 
two (2) screws marked [384A]. The JK circuit 
board can then be removed. (Fig. 4)
A-5. DA Circuit Board 
  (Time required: About 8 minutes)
A-5-1 
Remove the side panels L and R. (See procedure 1)
A-5-2 Fix the control panel assembly 16. (See procedure 2)
A-5-3  Remove the JK circuit board. (See procedure A-4)
A-5-4 Remove the two (2) screws marked [374A]. The 
cable holder C can then be removed. (Fig. 4)
A-5-5 Remove the sixteen (16) screws marked [372A]. 
The DA circuit board can then be removed. (Fig. 4)
  *   The earth sheet DA is not part of the DA circuit 
board. The earth sheet DA is soldered to the 
DA circuit board. When replacing the DA circuit 
board, remove the solder to remove the earth 
sheet DA from the DA circuit board and solder 
it to the new circuit board. (Photo 5)
  *   The DA circuit board is used for the following 
channels:
    · DA circuit board: OMNI OUT CH 1 − 8
• DA Circuit Board Assembly¢%³”ÄTTZ£

 +,
						

							29 LS9-16/LS9-32
[62A]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[212]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[218]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[230A]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£4.0X6 MFZN2B3 (WE973200)
[242A]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[312]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[332]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[334A]: Hexagonal Nut
¢›	á¯Æ¿Ä£9.0 MFNI33 (V2431400)
[342A]:  Bind Head Tapping Screw-B
¢#» Ä´#*/%£3.0X6 MFZN2B3 (WF028600)
[502A]: Bonding Tapping Screw-B
¢#» Ä´#0/%£3.0X8 MFZN2B3 (WE774100)
Fig. 5
¢
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DA-JK angle L
¢%+,Úé¢-££
DC Shield assembly 16
¢%$³”çÅAss’y 16£
CPU support A
¢$16±Ù”Ä£CPU support B
¢$16±Ù”Ä#£Ferrite core
¢Ñ£å Ä¯ž£
AC top shield
¢$³”çÅ
Ä¿Ó£
DSP
[218B][218B][62A]
[502A]
[230A]
[218A]AC inlet assembly
¢ ïè¿ÄAss’y£
ACIN[212A]
[242A]
[312B]
[312A]
[312C]
[312C]

Power supply unit
¢?oâÇ¿Ä£
PHN
DCD[342A]
[332A][332A][332B]
[334A]
[100A]LEVEL
PHONES
AC Bottom shield
¢$³”çÅ
ØÄÜ£Earth
¢ž”µ£
A-6.  PHN Circuit Board
 
(Time required: About 5 minutes)
A-6-1 
Remove the side panels L and R. (See procedure 1)
A-6-2  Remove the control panel assembly 16. 
  (See procedure 2)
A-6-3  Remove the two (2) screws marked [332A].
A-6-4 Remove the knob L marked [100A], the screw 
marked [332B], and the hexagonal nut marked 
[334A]. The PHN circuit board can then be 
removed. (Fig. 5)

 1)/
						

							LS9-16/LS9-32
30
A-7.  DCD Circuit Board 
 
(Time required: About 5 minutes)
A-7-1 
Remove the side panels L and R. (See procedure 1)
A-7-2  Remove the control panel assembly 16. 
  (See procedure 2)
A-7-3  Remove the seven (7) screws marked [342A]. The 
DCD circuit board can then be removed. (Fig. 5)
A-8.  DSP Circuit Board 
 
(Time required: About 16 minutes)
A-8-1 
Remove the side panels L and R. (See procedure 1)
A-8-2  Remove the control panel assembly 16. 
  (See procedure 2)
A-8-3  Remove the CPU circuit board. 
(See procedure A-1)
A-8-4 Remove the two (2) screws marked [312A]. The 
CPU support A can then be removed. (Fig. 5)
A-8-5 Remove the two (2) screws marked [312B]. The 
CPU support B can then be removed. (Fig. 5)
A-8-6  Remove the HAAD2 (1/2, 2/2) circuit boards. 
 (See procedure A-3)
A-8-7 Remove the five (5) screws marked [312C]. The 
DSP circuit board can then be removed. (Fig. 5)
A-9. AC
Top Shield, AC Bottom Shield, AC IN 
Circuit Board, AC Inlet Assembly
A-9-1 Remove the side panels L and R. (See procedure 1)
A-9-2 Fix the control panel assembly 16. (See procedure 2)
A-9-3  Remove the JK circuit board. (See procedure A-4)
A-9-4  Remove the DA circuit board. (See procedure A-5)
A-9-5 
AC Top Shield (Time required: About 9 minutes):
A-9-5-1 Remove the four (4) screws marked [218A]. The 
AC top shield can then be removed. (Fig. 5)
A-9-6  ACIN Circuit Board 
  (Time required: About 10 minutes):
A-9-6-1 Remove the AC top shield. (See procedure A-9-5)
A-9-6-2 Remove the four (4) screws marked [212A]. The 
ACIN circuit board can then be removed. (Fig. 5)
  *   The power switch knob is not part of the ACIN 
circuit board. When replacing the ACIN circuit 
board, remove the power switch knob from 
the ACIN circuit board and install it on the new 
circuit board. (Photo 6)
A-9-7  AC Inlet Assembly 
  (Time required: About 10 minutes):
A-9-7-1 Remove the AC top shield. (See procedure A-9-5)
A-9-7-2 Remove the two (2) screws marked [502A]. (Fig. 5)
A-9-7-3 Remove the screw marked [230A]. The earth can 
then be removed. (Fig. 5)
A-9-7-4 Remove the AC inlet assembly. (Fig. 5)
A-9-8 AC
Bottom Shield
  (Time required: About 10 minutes):
A-9-8-1 Remove the AC top shield. (See procedure A-9-5)
A-9-8-2 Remove the AC inlet assembly. (See procedure 
A-9-7)
A-9-8-3 Remove the four (4) screws marked [218B]. The 
AC bottom shield can then be removed. (Fig. 5)

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