Casio SK-60 Service Manual
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POWER
ON
OFF
VOLUME TEMPO
T I M E
S
M
L
ELECTRIONIC KEYBOARD
SK-60
36 SONG BANK
36 TONES
24 SONGS
11
PIANO
32
SIREN 2
52
DOO1 (MALE)
ELEC PIANO
33
TELEPHONE
53
DOO2 (MALE)
11
12
VOICES OF REASON (ORIGINAL SONG)
34
SPACE 1
54
BAH (BASS)
12
13
ORGAN
TWINKLE TWINKLE LITTLE STAR
35
SPACE 2
55
BOM (BASS)
14
ACCORDION
13
DOOIN' MY THING (ORIGINAL SONG)
36
FUNNY
56
VOICE PERCUSSION
15
GUITAR
14
ODE TO JOY
16
VIBRAPHONE
HUMAN VOICE
HUMAN VOICE
15
LITTLE BROWN JUG
21
VIOLIN
41
DOO (FEMALE)
(CYCLE)
16
SPRING FROM "THE FOUR SEASONS"
22
STRINGS
42
BEE (FEMALE)
61
DOO-BEE
21
WHEN THE SAINTS GO MARCHING IN
23
TRUMPET
43
DEE (FEMALE)
62
BOM-BAH
22
FRÈRE JACQUES
24
CLARINET
44
BAH (FEMALE)
63
DOO-BEE-DEE
23
OLD MacDONALD HAD A FARM
25
SAX
45
AHH (CHOIR)
64
DOO-BEE-BAH
24
AULD LANG SYNE
26
FLUTE
46
OOH (CHOIR)
65
DOO-BEE-DEE-BAH
25
LONDONDE RRY AIR
SIREN 1
51
LA (CHILDREN)
66
DOO-BEE-DOO-BAH
26
31
ROW, ROW, ROW YOUR BOAT
START/
MELODY
MAGICAL
1
2
3
TONE
STOP
ON/OFF
SINGER
A
C
4
5
6
SONG BANK
C Y C L E
1-2-3-4
1-2
1-2-3
12 FREE SESSI ONS
31
MARY HAD A LITTLE LAMB
51
POPS 1
32
AMAZIN G GRACE
52
BIG BAND
33
ACH DU LIEBER AUGUS TIN
53
SWING
34
LONDO N BRIDGE
54
FOX TROT
35
JOY TO THE WORLD
55
POPS 2
36
GREEN SLEEVE S
56
WALTZ 1
41
JINGLE BELLS
WALTZ 2
61
42
SILENT NIGHT
62
POLKA
43
O CHRIST MAS TREE
63
SKA
44
YANKEE DOODL E
64
TEX-ME X
45
SANTA LUCIA
65
COUNT RY
46
MARCH FROM "THE NUTCRAC KER"
66
BAROQ UE
PAD
SAMPLE
PAD
EFFECT
1
2
B
D
SAMPLING
3
4
EDIT
T U N E
E F F E C T
RELEASE
REVERSE
RESET
LOOP
CLEAR
SK-60

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Summary of Contents for Casio SK-60

  • Page 1 SK-60 36 SONG BANK 36 TONES 24 SONGS PIANO SIREN 2 DOO1 (MALE) 12 FREE SESSI ONS ELEC PIANO TELEPHONE DOO2 (MALE) VOICES OF REASON (ORIGINAL SONG) MARY HAD A LITTLE LAMB POPS 1 SPACE 1 BAH (BASS) ORGAN TWINKLE TWINKLE LITTLE STAR...
  • Page 2: Table Of Contents

    CONTENTS Specifications .......................... 2 Block Diagram ......................... 3 Circuit Description ........................4 Major Waveforms ........................7 Printed Circuit Board ....................... 8 Schematic Diagrams ....................... 9 Exploded View ........................11 Parts List ..........................13 SPECIFICATIONS GENERAL Number of keys: Polyphonic: 12-note Preset tones: Human voice tones: Voice cycles:...
  • Page 3: Block Diagram

    BLOCK DIAGRAM RAM (256 Kbit) LSI2 HM62256BLSP-8 MD0 ~ MD7 MA0 ~ MA14 Mic. input KI4 ~ KI7 Mic. Amp. Buttons Q105, Q106 LSI1 KO0 ~ KO7 Amp./Voltage Regulator MSM6755B-10 IC101 Keyboard AN8053N KI0 ~ KI3 Q103 AVDD DVDD Reset IC Voltage Regulator Q101, Q102, D102 Q1, X1...
  • Page 4: Circuit Description

    CIRCUIT DESCRIPTION KEY MATRIX KO0 (SO0) Song Start/ KO1 (SO1) Stop Melody KO2 (SO2) On/Off KO3 (SO3) Tone Volume Magical KO4 (SO4) Singer Volume KO5 (SO5) Sampling Down Tempo KO6 (SO6) Edit Effect Tempo KO7 (SO7) Down NOMENCLATURE OF KEYS F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4...
  • Page 5 CPU (LSI1: MSM6755B-10) Containing a sound data ROM and a DAC (Digital to Analog Convertor), the CPU provides sound waveform in accordance with the pressed key and the selected tone. The CPU also records the voice picked up the microphone, using the built-in ADC (Analog to Digital Convertor) and the RAM. The following table shows the pin functions of LSI1.
  • Page 6 AMPLIFIER/VOLTAGE REGULATOR (IC101: AN8053N) CONT VREG NC PRE GND The right figure shows the internal block of IC 101. 5V REG POWER – SP AMP VREF NC SP GND PC-1 PC-2 SPM VREF POWER SUPPLY CIRCUIT The power supply circuit generates two voltages DVDD (+5 V) and AVDD (+5 V). DVDD (+5 V) is always generated but AVDD (+5 V) is controlled by APO signal output from the CPU.
  • Page 7: Major Waveforms

    MAJOR WAVEFORMS 1 Clock pulse 2 Key scan signal KO6 MSM6755B-10 pin 32 MSM6755B-10 pin 72 3 Key scan signal KO7 MSM6755B-10 pin 73 4 Sound waveform 5 Mic. amp. input MSM6755B-10 pin 44 Terminal PM-BL 6 Mic. amp. output Tone: No.
  • Page 8: Printed Circuit Board

    PRINTED CIRCUIT BOARD Main PCB KDM415-MA1M — 8 —...
  • Page 9: Schematic Diagrams

    SCHEMATIC DIAGRAMS Main PCB KDM415-MA1M/KY2M — 9 —...
  • Page 10 Keyboard PCB KDM415-KY1M — 10 —...
  • Page 11: Exploded View

    EXPLODED VIEW — 11 —...
  • Page 12: Parts List

    PARTS LIST SK-60 Notes: This parts list does not include the cosmetic parts, which parts are marked with item No. "R-X" in the exploded view. Contact our spare parts department if you need these parts for refurbish. Prices and specifications are subject to change with- out prior notice.
  • Page 13: Specifications

    Item Code No. Parts Name Specification Main PCB 6925 4540 Main PCB ass'y M415-MA1M M140426*1 LSI1 2012 3738 LSI, CPU MSM6755B-10 LSI2 2012 3731 LSI, RAM HM62256BLSP-8 2105 5922 RE5VL40AA-TZ IC101 2114 3269 AN8053N 2220 1387 Transistor 2SC1740SQ-TP-T Q102 2251 0469 Transistor 2SB1237Q,R-TV6-T Q107...
  • Page 14 MA0700761A...

Table of Contents