Yamaha Disklavier MPX100II, Service Manual

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TM
S E R I E S
MP100II
The DISKLAVIER silent piano MPX100II is essentially the same as a MX100II, with an additional silent
function.
This service manual describes only the different part from the MX100II.
You must have the MX100II service manual(008659) before servicing this unit.
For the following sections of the service manual, please refer to the MX100II service manual (008659).
Main content:
Formatting floppy disk
Panel layout
Controller front panel, Remote control
LCD error messages
Disassembly procedure
Upper front board, Lower front board, Action unit, Control unit, Controller board, FDD unit, Key
sensor unit,PK-CTL circuit board, Drive A circuit board, Drive B circuit board, Drive C circuit board
Plunger assembly, Coil assembly, Pedal drive unit, PS assembly
Sensor output voltage(Pedal drive unit) adjustment.
LSI pin description(except the LSIs in MN circuit board and Motor drive circuit board)
IC block diagram(except the ICs in MN circuit board and Motor drive circuit board)
Circuit boards
CONTROLLER, 7 SEG LED, POWER SWITCH, CTRL-OUT, CTRL-IN, PANEL SWITCH,
HAMMER EMISSION, KEY RECEIVE, KEY EMISSION, DRIVE A, DRIVE B, DRIVE C, POWER
SUPPLY unit
Parts list
Mechanical parts
KEY SENSOR UNIT, KEY DRIVE UNIT
Electrical parts
Circuit boards(CONTROL OUT, CONNECTION, PANEL SWITCH, HAMMER EMISSION, KEY
RECEIVE, KEY EMISSION, DRIVE A, DRIVE B, DRIVE C), POWER SUPPLY UNIT
CONTENTS
SPECIFICATIONS 2
PANEL LAYOUT 3
UNIT LOCATION 4
WIRING 5
DISASSEMBLY PROCEDURE 6
LSI PIN DESCRIPTION 8
IC BLOCK DIAGRAM 10
CIRCUIT BOARDS 11
TEST MODE 20
MIDI DATA FORMAT 22
MIDI IMPLEMENTATION CHART 24
PARTS LIST
YAMAHA CORP.
HAMAMATSU, JAPAN
1.7K-324 Printed in Japan '95.9
PP
008564