Haad (2/2) Circuit Board; Dcin Circuit Board; Removing The Mbm7Cl - Yamaha M7CL-32 Service Manual

M7CL-32/M7CL-48
C-2-5 HAAD (2/2) Circuit Board (Time required: About
10 minutes):
C-2-5-1Remove the HAAD (1/2) circuit board. (See
procedure C-2-4)
C-2-5-2Remove the sixteen (16) screws marked [750G] and
two (2) screws marked [760G]. The HAAD (2/2)
circuit board can then be removed. (Fig.11, 12)
* The HAAD (1/2) circuit board and HAAD (2/2)
circuit board are used for the following channels:
· HAAD (1/2) circuit board: INPUT CH 33—40
· HAAD (2/2) circuit board: INPUT CH 41—48
C-3. DCIN Circuit Board
C-3-1 Remove the front plate. (See procedure 1)
C-3-2 Fix the control panel 3 assembly. (See procedure 4)
C-3-3 Remove the six (6) screws marked [920C]. The
DCIN circuit board can then be removed. (Fig.11)
* There is a DIP switch for selecting channels (SW501)
on the DCIN circuit board. (Fig.11, Photo 11)
The channel assignment for the DCIN circuit board
is as follows:
P.C.B. Channel assignment
CH 33—40

DCIN circuit board

CH 41—48
D. Disassembly Procedure of Control Panel 1 Assembly
* If it is difficult to remove a circuit board with
the control panel 1 assembly inclined 45
degrees by the control panel stays, remove them
and place the unit on a cloth before working.
D-1. Removing the MBM7CL (Option)
(Time required: About 1 minute)
D-1-1 Remove the screw marked [62A]. The cable cover
can then be removed. (Fig.13)
D-1-2 Loosen the two (2) screws marked [92A] and
remove the two (2) screws marked [92B]. The
MBM7CL can then be removed from the M7CL.
(Fig.13)
40
(Time required: About 4 minutes)
SW501
1 2
ON OFF
• DIP Switch (SW501)
Photo 11
DCIN