Cpum Circuit Board Assembly - Yamaha M7CL-32 Service Manual

M7CL-32/M7CL-48
A. Disassembly Procedure of Bottom Assembly section underneath Control Panel 1 Assembly
A-1. CPUM Circuit Board Assembly
(Time required: About 4 minutes)
A-1-1 Remove the front plate. (See procedure 1)
A-1-2 Fix the control panel 1 assembly. (See procedure 2)
A-1-3 Remove the two (2) screws marked [1080A], and
two (2) screws marked [1080B]. The CPUM circuit
board assembly can then be removed. (Fig.5)
* MAC (Media Access Control) address is stored
in the CPUM circuit board assembly. If the CPUM
circuit board assembly is replaced, MAC
address will be changed.
CPU holder
CPU
[1060]
[1010]
[1010]
CPUM
[1020] [1080A]
[1020] [1010]
DSP32
DSP48
∗
This figure shows the M7CL-48.
M7CL-48
[210A]: Bind Head Tapping Screw-S
[220A]: Bind Head Tapping Screw-S
[260A]: Bonding Tapping Screw-B
[270A]: Bind Head Tapping Screw-S
[320]: Bind Head Tapping Screw-S
[330]: Bind Head Tapping Screw-S
[485]: Bind Head Tapping Screw-S
[540]: Bonding Tapping Screw-B
[550A]: Bind Head Tapping Screw-S
[610]: Bonding Tapping Screw-B
[620]: Bind Head Screw
[630]: Lock Screw
[640]: Bind Head Tapping Screw-S
[1010]: Bind Head Tapping Screw-S
[1020]: Spacer
[1030]: Spacer
[1050]: Bind Head Tapping Screw-S
[1060]: Bind Head Tapping Screw-S
[1080]: Bind Head Tapping Screw-S
[1180]: Bind Head Tapping Screw-S
30
M7CL-48
<Top view>
[1050]
[1030]
[1080B]
(M7CL-32)
(M7CL-48)
<Rear view>
Power supply assembly
[640]
JK
DA
(1/2)
[550A]
DSP48
CPUM
Receptacle assembly
JK
Ass'y [610]
[260A] DA
(1/2)
3.0X6 MFZN2W3 (WE877900)
4.0X6 MFZN2W3 (WF215300)
3.0X8 MFZN2B3 (WE774100)
4.0X6 MFZN2W3 (WF215300)
3.0X6 MFZN2W3 (WE877900)
4.0X6 MFZN2W3 (WF215300)
4.0X6 MFZN2W3 (WF215300)
3.0X8 MFZN2B3 (WE774100)
3.0X6 MFZN2W3 (WE877900)
3.0X8 MFZN2B3 (WE774100)
3.0X6 MFZN2B3 (WE878300)
17L-003C41 (V3768900)
3.0X6 MFZN2W3 (WE877900)
3.0X6 MFZN2W3 (WE877900)
M3 L=13mm (WE955300)
BSB-330 (WC390400)
3.0X6 MFZN2W3 (WE877900)
4.0X6 MFZN2W3 (WF215300)
3.0X6 MFZN2W3 (WE877900)
3.0X6 MFZN2W3 (WE877900)
Fig.5
Receptacle assembly
∗
Ass'y
Ass'y
[330] [270A]
[320]
OPT
[485]
DC
DCMS
[1180]
[620] [630] [610]
DA [540A] x 16
(2/2)
[540B] x 16
The M7CL-32 does
not have this section.
M7CL-32
[220A]
[210A]