
KORG M3-73
SERVICE MANUAL
Blockdiagram and Schematics are in another file.
TABLE OF CONTENTS
ASSEMBLY SKETCH (HOOKUP): 2
TEST MODE: 3-4
PARTS LIST: 5-8
Issued June.5, 2007
Ver.2 Changed P6-7

M3 Test mode
How to enter the test mode
-Tset mode to confirm that the keybed is not connected when to use as M3-M
Turn the power on pressing ENTER + 6
-Full inspection mode
Turn the power on pressing ENTER + 5
-Other test mode
ENTER + 0 :Initialize Backup Area
ENTER + 2 :Skip the internal check
ENTER + 7 :Check of connectors of M3-73/88’s Sub-OUT
ENTER + 8 :Ext Key Check
ENTER + 9 :Diplay of Version No.
MENU + 1 :Option memory simple check
MENU + 2 : writing check of GUID to Firewireboard
MENU + 3 :On Board + Option memory simple check
MENU + 4 :RADIAS Option Check
MENU + 5 :Test Mode
MENU + 6 :Firewire Option Check
MENU + 7 :Option memory Full Check
MENU + 8 :Load Preload/Demo Data
MENU + 9 :On Board + Option memory Full Check
LOCATE + 0 :USB Storage Mode
LOCATE + 1 :Keybed Update
Operation in the test mode
[ENTER] : Proceed to next check
[ △ ] : Proceed to next item
[ ∇ ] : Go back to former item
[ FF ] : Proceed to next step
[ RW ] : Go back to former step

Notice
-Connect a USB flash memory (USB2.0) to the USB A connector.
-Connect a personal computer which is working on USB2.0 to the USB B connector.
-When internal check [ Please Connect Digital Cable] is displayed, connect the OPTICAL IN and OUT using
a OPTICAL cable (loop).
-Confirm that the numer of keys wich is connected is same as in the diplay.
When the different number of the keys is displayed, the PCB of the keyboard is different KLM-2860.
-In the operation check, the caliblation is needed for RIBBON, JOYSTICK, PAD, AFTERTOUCH..
-When to set the preload data of M3-88 to factory setting, connection of KEYBED is needed.

S29AL004D70TFI010 (X4210)

YKF45-0021N(USB RA B-TYPE)
X-9100 JACK PLATE 2 C41068-2
X4210 JACK PLATE 1 C41446
X4210 JACK PLATE 2 C41447
DIN JACK MD24-9PSC4EC-000-21

SM02(8.0)B-BHS-1-TB(LF)(SN)
KLM-2650/2706 M3-61/73/88
DIN JACK MD24-9PSC4EC-000-21
KLM-2860/61 M3-73 (ASS'Y)
SML2CD-20X60BDX8(BL)-P0.5-S4+4
CORDSET SP0523-2-90 W/INLET
KA300 (DSA-60W-12 1 12060A)
HNS-3752(WITH DIN/ANGLE DIN)
FERITE MAGNET 7X7X2S WHITE
EC-652-E03 (230V GE WG FR)
UC-953-J01 (120V US CN EX)
CONVERTER SOCKET YL-212 (JP)
CORDSET SP0523-2-90 W/INLET
CORDSET SP0523-2-90 W/INLET:UL
X4210 MODULE PANEL ASSY H40252
X4210 MODULE BOTTOM COVER C30730
X4210 MODULE SIDE PANEL E30453
4210 KEY BASE BLOCK L ASSY H30320
4210 KEY BASE BLOCK R ASSY H30321

X4210 ENCODER KNOB E40466-7
X4210 1-KEY(V) H30323-1 WHITE
X4210 2-KEYS(V) H30323-2 WHITE
X4210 3-KEYS(V) H30323-3 WHITE
X4210 5-KEYS(V) H30323-5 WHITE
X4210 2-KEYS(H) H30322-2 WHITE
X4210 3-KEYS(H) H30322-3 WHITE
X4210 4-KEYS(H) H30322-4 WHITE
X4210 DIMM OP COVER C41484
X4210 FIRE WIRE SUPPORT C41496
X-2100 RUBBER KEYPAD E30375
X-1450/60TOUCH PANEL TAPE L F41074
X-1450/60 TOUCH PANEL TAPE S F41075
X-952POW SW KNOB NO SILK E40304-2
ROTARY VR KONB KOC-E48026-1
X4210 PAD BTN M-WH PU E40623-2
X4210 SHIELD SHEET F41356
4110 SideChassis L-A C30764-1
4110 SideChassis L-B C30764-2
4110 SideChassis R C30765
4110 SidePanel L C30757-1
4110 SidePanel R C30757-2
4110/4120 PipeBracket E30497
4110/4120 PipeAngle C41553
4110/4120 CoverHook E30480
4100 SIDE WOODPANEL R D30311-1
4100 SIDE WOODPANEL L D30311-2
X4100 JS PANEL COVER C30733
X4100 KEY BLOCK COVER C41486
X-8120 KNOB(x2) KOC-H40149-2
X4100 JS WHEEL SUPPORT E30455
X-0100 WHEEL SPRING KOC-C41222
X-0100 JS WASHER KOC-F40979
X4100 JS LED SPONGE F41372
BOLT WITH HEXAGONAL HOLE BT NIC 3X8