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Yamaha LS9 Service Manual page 26

Digital mixing console
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LS9-16/LS9-32
A. LS9-16 Disassembly Procedure of Bottom Assembly Section  (LS9-16のボトムAss'y部の分解)
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.
CPU
[322A]
CPU support A
(CPUサポートA)
HA angle
(HA金具)
26
<Rear view>
JK
DA
[322B]
HAAD2
(2/2)
DSP
[364A]
[364B]
[52A]
CPU
PHN
[52A]: Bind Head Tapping Screw-B (Bタイト+BIND) 3.0X6 MFZN2B3 (WF028600)
[322]: Bind Head Tapping Screw-B (Bタイト+BIND) 3.0X6 MFZN2B3 (WF028600)
[362]: Bonding Tapping Screw-B (Bタイト+BOND) 3.0X8 MFZN2B3 (WE774100)
[364]: Bind Head Tapping Screw-B (Bタイト+BIND) 3.0X6 MFZN2B3 (WF028600)
[372A]: Bonding Tapping Screw-B (Bタイト+BOND) 3.0X8 MFZN2B3 (WE774100)
[374A]: Bind Head Tapping Screw-B (Bタイト+BIND) 3.0X6 MFZN2B3 (WF028600)
[382A]: Bonding Tapping Screw-B (Bタイト+BIND) 3.0X8 MFZN2B3 (WE774100)
[384A]: Bind Head Screw (小ネジ+BIND) 3.0X6 MFZN2B3 (WE878300)
[386A]: Bind Head Tapping Screw-B (Bタイト+BIND) 3.0X6 MFZN2B3 (WF028600)
A-1.  CPUシート
A-1-1  サイドパネルL, Rを外します。 ( 1項参照)
A-1-2  コンパネAss'y 16を外します。 ( 2項参照)
A-1-3  [322A]の ネ ジ2本 と[322B]の ネ ジ2本 を 外 し て、
CPUシートを外します。 ( 図4)
  ※  CPUシ ー ト に は、MAC (Media Access Control)
アドレスが設定されています。CPUシートを交換
すると、MACアドレスが変更されます。
[384A]
[382A]
HAAD2
(1/2)
[364A]
DSP
DCD
Fig. 4 ( 図4)
(所要時間 : 約5分)
[362A] x 16
[372A] x 16
[386A]
JK
[374A]
DA
Cable holder C
(束線固定金具C)
Power supply unit
(電源ユニット)
HAAD2
(1/2)
[362B] x 16
HAAD2
(2/2)

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Ls9-16Ls9-32