CASIO CPS130 Service Manual

CPS-130

INDEX

CPS-130 is similar to CPS-100. Refer to the CPS-100 service manual
for the circuit description that are not covered in this manual.

(without price)

CPS-130

ELECTRIONIC KEYBOARD

CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Key and switch Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

PCB View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Major Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SPECIFICATIONS

General

Number of keys: 61
Polyphonic: 10-note
Preset tones: 5, including: Piano, Harpsichord, Vibraphone, Jazz organ, Pipe organ
Demonstration tune: Ballade Pour Adeline
Tuning control: 442 Hz ±30 cents
Built-in speakers: 12.0 cm dia. 1.1 W Input Rating: 2 pcs.
Terminals: Output jack [Output impedance:30 Ω, Output voltage: 1.2 V (rms) MAX]

Sustain jack, AC adapter Jack (DV 9 V)

Power source: DC: 6 D size dry batteries

Battery life: Approx. 10 hours (SUM-1/R20P)

AC: AC Adapter AD-5
Power consumption: 4.2 W
Dimensions (HWD): 116 x 970 x 364 mm

(4-5/8 x 38-1/4 x 14-3/8 inches)
Weight: 8.4 kg (18.5 lbs) including batteries

Electrical

Current drain with 9 V DC:
No Sound Output 80 mA ± 20%
Maximum volume 350 mA ± 20%

with any 10 keys pressed in Piano tone
Volume: Maximum, Sustain: ON
Phone output level (Vrms with 8 Ω load each channel) 87 mV ± 20 %

with key C5 pressed in Piano tone, Volume: Maximum
Line output level (Vrms with 47 kΩ load each channel) 470 mV ± 20 %

with key C5 pressed in Piano tone, Volume: Maximum
Minimum operating voltage: 6.5 V

— 2 —

BLOCK DIAGRAM

Keys and Switches

— 3 —

Output

Speakers

Power Amp.

LA4127

Main Volume

Control

DVDD

Power IC
LA5668N

Filter (R)

M5218APR

Filter (L)

M5128APR

VCCAVDDVDD

ROUT

LOUT

(APO)

DAC

LC7881C

DATA

WCK1
LRCK

KO22

KI1 ~ KI8

BCK

CPU

CDT109-005

KO4 ~ KO19

Reset IC

S8053ALR

Reset

CE(AR18)

OE

ROM

AR0 ~ AR17

HN62414PD25

IO0 ~ IO15

PG2

MIDI Clock

2 MHz

PG1

Main Clock

21.7251 MHz

KEY AND SWITCH MATRIX

KI1 KI2 KI3 KI4 KI5 KI6 KI7 KI8

KO4 C1 C#1 D1 D#1 E1 F1

KO5 F#1 G1 G#1 A1 A#1 B1

KO6 C2 C#2 D2 D#2 E2 F2

Demon-

stration

KO7 F#2 G2 G#2 A2 A#2 B2

KO8 C3 C#3 D3 D#3 E3 F3

KO9 F#3 G3 G#3 A3 A#3 B3

KO10 C4 C#4 D4 D#4 E4 F4

KO11 F#4 G4 G#4 A4 A#4 B4

KO12 C5 C#5 D5 D#5 E5 F5

KO13 F#5 G5 G#5 A5 A#5 B5

KO14 C6

KO16 Piano Jazzorgan Pipeorgan

Harpsi-

chord

Vibra-

phone

KO18 Power OFF Power ON

KO19 (Sustain)

Nomenclature of Keys

C#1

G#1F#1D#1

C#2

A#1

B1A1G1F1E1D1C1

C2 D2E2F2G2A2 B2 C3 D3

F#2D#2

C#3A#2G#2

F#3 G#3

D#3

E3

F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5

A#3 C#4 D#4

F#4 G#4

A#4

C#5

D#5

— 4 —

F#5 G#5

A#5

C6

PCB M5312-MA1M

SCHEMATIC DIAGRAMS

Power IC

13

15

12 14

Filter

9 11

8 10

,

PG2

Power
Amp.

PG1

3

2

C P U

,

1

DAC

Reset IC

6

7

4
5

ROM

— 5 —

PCB M5312-CN1M

— 6 —

PCBs M615K-KY1M, KY2M

— 7 —

PCB VIEW

6

7

3

54

1

12,14

8, 109, 1113, 15

— 8 —

2

MAJOR WAVEFORMS

1

Signal MI

1

CDT109-005 pin 6
Power ON

4

5

2

3

Key scan signal KO9

2

CDT109-005 pin 44
Key scan signal KO19

3

CDT109-005 pin 34

6

7

DATA

4

LC7881C pin 8
BCK

5

LC7881C pin 9

80

9

DAC output: LC7881C pin 1

8

DAC output: LC7881C pin 20

9

Tone: Flute
Key: A3

LRCK

6

LC7881C pin 6
WCK1

7

LC7881C pin 7

A

DAC output: LC7881C pin 1

0

DAC output: LC7881C pin 20

A

Tone: Piano
Key: A3

— 9 —

B

D

C

Filter output: M5218APR-1 pin 1

B

Filter output: M5218APR-1 pin 7

C

Tone: Piano
Key: A3

E

Filter output: M5218APR-1 pin 1

D

Filter output: M5218APR-1 pin 7

E

Tone: Flute
Key: A3

TROUBLESHOOTING

Nature of Trouble Faulty Block Checkpoint

No power Power IC (LA5668N) Pin 2 should have +9 V.

Power jack Jack contact.

No sound at all Power IC (LA5668N) Pin 6 should have +5 V.

Power amp (LA4127) Check output signals of pins 1 and 20.
Main clock generator Check oscillation at pin 105 of CPU.
CPU (CDT109-005) Pin 6 should receive a trigger pulse when

turning on the power switch.
Check signals DATA, BCLK, WCK1 and LRCK

of pins 107, 109, 111, and 112.
ROM (HN62414PD25) Check address/data bus.
Reset IC (S8053ALR) Pin 1 should provide a low level pulse when

the AC adapter is connected.

Certain keys or switches
do not function

A certain key or switch does
not function

Distorted sound Power IC (LA5668N) Check voltages of pins 2 (+9 V) and 6 (+ 5 V).

Key and switch matrix Open circuit on KO or KI line.

Key and switch matrix Dust on the con tact.

ROM (HN62414PD25) Check address/data bus.
CPU (CDT109-005)

— 10 —

19-2

EXPLODED VIEW

18

— 11 —

19

21

20

2

4

5

13

22

10

12

11

6

9

7

8

8

10

17

14

15

1

19-1

16

23

3

23

24

PARTS LIST

CPS-130

Notes: 1. Prices and specifications are subject to change with-

out prior notice.

2. As for spare parts order and supply, refer to the
"GUIDEBOOK for Spare parts Supply", published
seperately.

3. The numbers in item column correspond to the same
numbers in drawing.

FOB Japan

N Item Code No. Parts Name Specification Q M N.R.Yen R *

Unit Price

Main PCB Ass'y

2010 7294 LSI LC7881C 1 1 A D
2010 9968 LSI CDT109-005 1 1 A N
2011 0378 LSI HN62414PD25 1 1 A M
2114 0070 Monolithic IC LA4127 1 1 A C
2114 1302 Monolithic IC LA5668N 1 1 A B
2114 1799 Monolithic IC M5218APR 1 1 A A
3850 1216 MOS IC S8053ALR 1 1 A B
2220 1409 Transistor 2SC1740SR-TP-T 1 10 A A
2259 0056 Digital transistor DTA114YS-TP-T 1 10 A A
2301 0275 Diode 1SS176-TPA7-T 9 20 B A
2310 7848 Zener diode RD4.3ESB2-T1-T 1 10 B A
2360 0903 Zener diode RD4.7JSB3-T1-T 1 10 B A

2390 0112 Variable capacitor SVC201SPA 1 5 C B

2390 0378 Diode 1SR139-100T-32-T 1 10 C A
2590 0595 Ceramic oscillator EFO-GC4004A4C 1 1 B B
2606 0014 Carbon film resistor R-20-15-J-T24-T 4 20 C A
2606 0315 Carbon film resistor R-20-3.3-J-T24-T 2 20 C A
2609 0182 Carbon film resistor R-20-100-J-T24-T 10 20 C A
2617 0052 Carbon film resistor R-20-1K-J-T24-T 2 20 C A
2617 0087 Carbon film resistor R-20-4.7K-J-T24-T 2 20 C A
2617 0095 Carbon film resistor R-20-10K-J-T24-T 7 20 C A
2617 0141 Carbon film resistor R-20-100K-J-T24-T 1 20 C A
2617 0192 Carbon film resistor R-20-1.8K-J-T24-T 2 20 C A
2617 0271 Carbon film resistor R-20-5.6K-J-T24-T 1 20 C A
2617 0273 Carbon film resistor R-20-22-J-T24-T 4 20 C A
2617 0297 Carbon film resistor R-20-22K-J-T24-T 1 20 C A
2617 0386 Carbon film resistor R-20-330-J-T24-T 1 20 C A
2617 0491 Carbon film resistor R-20-330K-J-T24-T 1 20 C A
2770 6860 Volume K121K0Z1B-100KB 1 5 B B
2801 7910 Electrolytic capacitor 16RE3-470-T2-T 2 10 C A
2805 3142 Electrolytic capacitor 16RE2-10-T2-T 3 10 C A
2805 3169 Electrolytic capacitor 6.3RE2-47-T2-T 3 10 C A
2807 0926 Electrolytic capacitor 10RE2-470-T2-T 2 10 C A
2807 0985 Electrolytic capacitor 16RE2-220-T2-T 1 10 C A
2807 1015 Electrolytic capacitor 16RE2-47-T2-T 2 10 C A
2807 1091 Electrolytic capacitor 6.3RE2-100-T2-T 3 10 C A
2807 1112 Electrolytic capacitor 10RE2-100-T2-T 2 10 C A
2813 1302 Semiconductive capacitor RT-B90TKYR104K-T 4 10 C A
2813 1309 Ceramic capacitor RT-HE60TKCH510J-T 1 20 C A
2813 1393 Semiconductive capacitor RT-C40TKYR222K-T 2 10 C A
2813 1400 Semiconductive capacitor RT-C50TKYR562K-T 2 20 C A
2818 0365 Ceramic capacitor RT-HE50TKYB102K-T 2 20 C A
2818 0446 Ceramic capacitor RT-HE40TKYB101K-T 5 20 C A
2818 0486 Ceramic capacitor RT-HE80TKCH121J-T 1 20 C A
2818 0494 Ceramic capacitor RT-HE80TKSL331J-T 2 20 C A
2818 0543 Ceramic capacitor RT-HE40TKYB561K-T 8 20 C A
2818 2082 Ceramic capacitor RT-HE70TKYF103Z-T 10 20 C A
2818 3283 Ceramic capacitor RT-HE50TKCH300J-T 1 20 C A
2830 6229 Mylar capacitor AMZV-104K50-T 2 10 C A
2845 0280 Ferrite beads EXC-ELDR35C 5 10 C A
2845 1372 Three polarity capacitor EXC-ECT103MBC 2 10 C A
3025 0203 EMI filter EXC-EMT222DC 4 10 C A
3501 7049 DC jack HEC2305-01-330 1 5 B A

Notes: N – New parts

M – Minimum order/supply quantity

R – Rank

— 13 —

FOB Japan

N Item Code No. Parts Name Specification Q M N.R.Yen R *

Unit Price

3612 0711 Miniature jack YKB21-5101 1 1 B B
3612 0789 Jack YKB21-5010 1 1 B B
3841 0476 Coil L2P-7L 1 1 C A

3841 0539 Inductor ELE-V100KR-T 2 5 C A
N 4317 0681 Blank PCB M5312-MA1M M110524A-1 1 1 C C
N 1 6916 7270 PCB ass'y M5312-MA1M M110510*1 1 1 B Z

Console PCB Ass'y

2320 9764 LED LN251RPP.WE 1 10 C A

2765 0952 Slide volume EWA-NAXCH1B23 1 1 B B

3410 1728 Tact switch EVQ-QS205K 6 10 B A

3420 0050 Slide switch SSE-22FP 1 1 B B

3725 1911 PC joiner M312B JSF00-19-100M 1 1 C A

4317 0710 Blank PCB M5312-CN1 M210607-1 1 1 C B

6910 1161 Sponge M4630A-4 1 10 C A
N 2 6916 7290 PCB ass'y M5312-CN1 M310801*1 1 1 C D

Keyboard PCB Ass'y

2301 0101 Diode 1S2473-T-77-T 61 20 C A
N 3725 1925 PC joiner M615KB JPSS00-4-40 1 1 C A
N 3725 1932 PC joiner M312A JSF00-17-250M 1 1 C B
N 3725 1981 PC joiner M615KA JPSS00-7-40 1 1 C A

4317 0690 PCB-M615K-KY1M M110525-1 1 1 C C

4317 0700 PCB-M615K-KY2M M210608-1 1 1 C B

6907 7410 Sponge M42696-2 1 5 C A
N 3 6906 7462 Keyboard PCB ass'y M110509*1 1 1 C F

Keyboard Unit

N 4 6916 9942 Reinforcement plate 312 M210671B-1 1 1 C C
N 5 6906 6871 Front panel sub ass'y M310809*3 1 1 C I

6 6912 4400 Key spring 144 M42306-2 61 20 C A
7 6915 3923 Black key M310538C-1 25 1 B A
8 6915 3931 White key CF M310418A-1 10 1 B B

9 6915 3941 White key D M310419A-1 5 1 B B
10 6915 3951 White key BE M310420A-1 10 1 B B
11 6915 3961 White key G M310421A-1 5 1 B B
12 6915 3971 White key A M310422A-1 5 1 B B
13 6915 3981 White key SE M310423A-1 1 1 C B
14 6915 7171 Key stopper TR61 M410720A-1 1 1 C B

6904 0600 Black key seal M31462-1 5 10 C A
6913 8051 Lug terminal M32711A-8 1 10 C A
6915 5320 Sponge KB M410665-1 4 5 C A

N 6916 9080 Sponge KB S2 M410964-1 1 5 C A

15 6916 7381 Frame 312 M110350A-1 1 1 C C

N 16 6916 7391 Contact rubber KY312A M310793A-1 4 1 B B
N 17 6916 7401 Contact rubber KY312B M310794A-1 1 1 B B

Case Unit

N 18 6922 3420 Keyboard cover sub ass'y M310891*3 1 1 B J
N 19 6922 6110 Upper case sub ass'y M210593*3 1 1 C T

19-1 6916 7430 Metal plate M210565-1 1 1 C B
19-2 6916 7450 Battery cover 235 M210564-1 1 1 B B

6921 5150 Lower key stopper 312 M412120-1 1 1 C B
6902 6140 Battery spring (-) 90 M41226-1 1 10 C A
6903 0461 Battery spring (+) M41328A-1 1 10 C A

N 6916 9101 Upper key stopper 312 M410963A-1 1 1 C B

20 6908 9580 Slide knob M31359-14 2 5 B A
21 6912 6324 Key top 149 M32440D-27 1 10 C A

Notes: N – New parts

M – Minimum order/supply quantity

R – Rank

— 14 —

FOB Japan

N Item Code No. Parts Name Specification Q M N.R.Yen R *

Unit Price

22 6912 6464 Key top 149 M32440D-45 1 10 C A
23 3831 0140 Speaker 1211AF4 2 1 B J

N 24 6916 7343 Lower case sub ass'y M210601C*1 1 1 C K
N 6911 5530 Sponge 50X30 M42106-1 1 5 C A

3719 2030 Ribbon cable M312S DF0H02090-35353535 1 1 C B

N 3719 2163 Ribbon cable M312R-1 DF5H02380-35353535 1 1 C A

Screws

0009 2680 Screw 4X8 7 50 C A
0009 2681 Screw with washer 4X8 10 50 C A
0009 2682 Screw 2.6X8 28 50 C A
0009 2683 Screw 3X6 8 50 C A
0009 4090 Screw 6X12 13 50 C A
5111 1362 Screw 3X8 36 50 C A
5111 5121 Screw 4X8 13 50 C A

Notes: N – New parts

M – Minimum order/supply quantity

R – Rank

— 15 —

8-11-10, Nishi-Shinjuku
Shinjuku-ku, Tokyo 160, Japan
Telephone: [phone]

Sep, 1994