Disassembly Procedure Of Lcd Assembly; Lcd Rear Case; Cpup Circuit Board; Usbif Circuit Board - Yamaha M7CL-32 Service Manual

G. Disassembly Procedure of LCD Assembly
* Before disassembling the LCD assembly, place
the unit on a cloth so as not to damage the LCD
during disassembly.
G-1. LCD Rear Case
(Time required: About 8 minutes)
G-1-1 Remove the MBM7CL. (See procedure D-1)
G-1-2 Remove the LCD assembly. (See procedure D-2)
G-1-3 Remove the four (4) screws marked [112]. The LCD
side pads L and R can then be removed. (Fig.17)
G-1-4 Remove the two (2) screws marked [92E] and nine
(9) screws marked [94]. The LCD rear case can
then be removed. (Fig.17)
G-2. CPUP Circuit Board
G-2-1 Remove the MBM7CL. (See procedure D-1)
G-2-2 Remove the LCD assembly. (See procedure D-2)
G-2-3 Remove the LCD rear case. (See procedure G-1)
G-2-4 Remove the four (4) screws marked [52D]. The
CPUP circuit board can then be removed. (Fig.17)
G-3. DC-AC inverter
(Time required: About 8 minutes)
G-3-1 Remove the MBM7CL. (See procedure D-1)
G-3-2 Remove the LCD assembly. (See procedure D-2)
G-3-3 Remove the LCD rear case. (See procedure G-1)
G-3-4 Remove the screw marked [42B]. The DC-AC
inverter can then be removed from the circuit board
holder. (Fig.17)
G-4. USBIF Circuit Board
9 minutes)
G-4-1 Remove the MBM7CL. (See procedure D-1)
G-4-2 Remove the LCD assembly. (See procedure D-2)
G-4-3 Remove the LCD rear case. (See procedure G-1)
G-4-4 Remove the four (4) screws marked [72B]. The
USBIF circuit board can then be removed. (Fig.17)
G-5. ENC Circuit Board
(Time required: About 10 minutes)
G-5-1 Remove the MBM7CL. (See procedure D-1)
G-5-2 Remove the LCD assembly. (See procedure D-2)
G-5-3 Remove the four (4) encoder knobs marked [200B],
four (4) encoder knobs marked [210C], four (4)
encoder knobs marked [220C], four (4) encoder
knobs marked [230B], the encoder knob marked
[240B], the encoder knob marked [250B], two (2)
encoder knobs marked [260C], the encoder knob
marked [270B], and twelve (12) encoder knobs
marked [280] from the control panel side. (Fig.17)
G-5-4 Remove the LCD rear case. (See procedure G-1)
G-5-5 Remove the twelve (12) screws marked [62C]. The
protection plate and ENC circuit board can then be
removed. (Fig.17)
(Time required: About 9 minutes)
(Time required: About
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