Korg SP-300 User manual

SP-300
digital piano
SERVICE MANUAL

SP-300 Specifications
Keyboard 88 notes, Hammer Action simulation, Velocity Sensitive
Keyboard modes Single, Layer
Touch selection Light, normal, heavy.
Tuning Transpose, fine tuning, temperament (equal, kirnberger, werckmeister).
Sound generation Stereo Sampling System
Polyphony 60 notes (max)
Sounds 30 sounds
Effects Reverb, chorus (3 levels each).
Demo 30 incorporated demos.
Metronome Tempo, Beat, Accent, Volume
Pedal Damper (Half-pedalling supported with optional Korg DS-1H pedal)
Connections Headphones x 2, Output (L/Mono, R), Input (L/Mono, R), Midi (IN, OUT), External
AC Adapter In, Damper Input
Controls Power switch, Master Volume slider, Transpose/Function, Touch control, Sound
selectors, Sound Bank, Effect selectors, Metronome, Tempo slider, Demo (30
incorporated demos), Speakers On/Off
Speakers 2 Dual Cone Speakers (10 cm x 2) – Wooden Bass Reflex Speaker Box
Main Amp 2 x 15 Watt
Power supply External AC Adapter (included)
Power consumption 5 Watt.
Dimensions (W x D x H) W: 1300mm (51.18") x D: 344mm (13.54") x H: 133mm (5.24" – without music
stand)
Weight 25 Kg (55.12lbs)
Colour Options
SP-300RS - Rose Silver Cabinet & Cherry Wood side panels
SP-300DB - Rose Silver Cabinet & Dark Brown Wood side panels
SP-300BK - Black Cabinet and Dark Brown Wood side panels
Accessories DC12V, 500mA, center negative barrel, AC adapter; damper pedal; music stand (all
included).
Sounds processed with INFINITY™. Korg reserves the right to change the specifications without notice

SP-300 Block diagram

Main board KIP-2051 top side Main board KIP-2051 bottom side

FV = FULL VIEW D1 = DISASSEMBLY 1 D2 = DISASSEMBLY 2 D3 = DISASSEMBLY 3 D4 = DISASSEMBLY 4
BB = BOTTOM BOARD SB = SPEAKERS BOX MOG = MAIN BOARD/OUTPUT BOARD GROUP MR = MUSIC REST
SP-300 PART LIST
ELECTRIC COMPONENTS
CODE PART-TYPE DESCRIPTION QTY
GRA0002050 PCB ASSEMBLY KIP-2050 PANEL BOARD 1
GRA0002051 PCB ASSEMBLY KIP-2051 MAIN BOARD 1
GRA0002061 PCB ASSEMBLY KIP-2061 OUTPUT BOARD 1
PANEL BOARD KIP-2050
CODE PART-TYPE REFERENCE QTY
DIX0005300 1N4148 DIODE D1-4 D6 D9-12 D15 D17-21 D23
D29 17
INT0001008 TACT SWITCH SKHVBE SW1-4 SW6 SW9-12 SW15 SW17-
21 SW23 SW28 17
LED0001002 2MM DISTANZIAL RED LED LED1-7 LED9-12 LED15 LED17-18
LED20 LED22-24 LED28 19
POT0001001 LINEAR POTENTIOMETER 10K VR5 1
POT0001003 STEREO POTENTIOMETER 10KBX2 VR1 1
MAIN BOARD KIP-2051
CODE PART-TYPE REFERENCE QTY
CIN0001012 OPTO COUPLER PC910-K IC1 1
CIN0002006 24 BIT D/A CONVERTER PCM1716E IC10 1
CIN0002040 NJM4580M DUAL LOW NOISE OP. AMP. SMD IC11 1
CIN0002047 HEX INV 74AHC04D SMD IC17 1
CIN0002048 8-CHANNEL-ANALOG-MUX/DEMUX-SMD 74HC4051 IC14 1
CIN0002049 3 TO 8 DEC.DEMUX 74HC238 IC6-7 2
CIN0003032 MASK ROM 64M (8Mx8/4Mx16) IC18 1
CIN0003033 64 VOICE INTEGRATED MUSIC INSTR. SAM 9753 IC4 1
CIN0004005 RESET GEN. 3.3V WITH INPUT
MAX811SEUS/ETC811SUC IC12 1
DIX0006000 Two Diode SMD DA204KT146 D4 1
DIX0006003 1N4148 SMD DIODE D1 1
QUA0006009 QUARTZ 8MHz SMD-M XT1 1
TRS0001009 +5V REG. 100mA TO92 78L05 IC13 1
TRS0002001 NPN BIASED RES. TRANSISTOR DTC114EKA Q1 1
TRS0002007 +3.3V REG. 1A BA033FP IC3 1