Casio CPS-130 Manuel utilisateur

CPS-130

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

— 2 —

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

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 Ωload each channel) 87 mV ±20 %

with key C5 pressed in Piano tone, Volume: Maximum

Line output level (Vrms with 47 kΩload each channel) 470 mV ±20 %

with key C5 pressed in Piano tone, Volume: Maximum

Minimum operating voltage: 6.5 V

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

SPECIFICATIONS

CONTENTS

— 3 —

BLOCK DIAGRAM

CE(AR18)

AR0 ~ AR17

IO0 ~ IO15

Main Clock

21.7251 MHz

Keys and Switches

KO4 ~ KO19

KI1 ~ KI8

CPU

CDT109-005 ROM

HN62414PD25

ROUT

LOUT

KO22

(APO)

VCCAVDDVDD

Power Amp.

LA4127

Output

Power IC

LA5668N

Filter (R)

M5218APR

Filter (L)

M5128APR

Speakers

Main Volume

Control

PG1

Reset IC

S8053ALR

DATA

BCK

WCK1

LRCK

DAC

LC7881C

DVDD

PG2

MIDI Clock

2 MHz

Reset

— 4 —

F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4 C#5 D#5 F#5 G#5 A#5

F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6

D#3

C2 D2 E2 F2 G2 A2 B2 C3 D3 E3

B1A1G1F1E1D1C1

C#3A#2G#2

F#2D#2

C#2

A#1

G#1F#1D#1

C#1

Nomenclature of Keys

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

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

KO18 Power OFF Power ON

KO19 (Sustain)

Harpsi-

chord Vibra-

phone

Demon-

stration

— 5 —

PCB M5312-MA1M SCHEMATIC DIAGRAMS

12 14 9 11

8 10

Power IC

PG2

Power

Amp. PG1

C P U

ROM

Reset IC

DAC

Filter

— 6 —

PCB M5312-CN1M

— 7 —

PCBs M615K-KY1M, KY2M

— 8 —

PCB VIEW

67354

8, 109, 1113, 15

12,14

— 9 —

MAJOR WAVEFORMS

Signal MI

CDT109-005 pin 6

Power ON

DATA

LC7881C pin 8

BCK

LC7881C pin 9

LRCK

LC7881C pin 6

WCK1

LC7881C pin 7

Key scan signal KO9

CDT109-005 pin 44

Key scan signal KO19

CDT109-005 pin 34

DAC output: LC7881C pin 1

DAC output: LC7881C pin 20

Tone: Flute

Key: A3

DAC output: LC7881C pin 1

DAC output: LC7881C pin 20

Tone: Piano

Key: A3

— 10 —

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.

ChecksignalsDATA,BCLK, WCK1and 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.

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

Key and switch matrix Dust on the con tact.

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

ROM (HN62414PD25) Check address/data bus.

CPU (CDT109-005)

Certain keys or switches

do not function

Acertainkeyorswitchdoes

not function

Filter output: M5218APR-1 pin 1

Filter output: M5218APR-1 pin 7

Tone: Piano

Key: A3

Filter output: M5218APR-1 pin 1

Filter output: M5218APR-1 pin 7

Tone: Flute

Key: A3

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