Casio CTK-710 User manual

ELECTRONIC KEYBOARD
CTK-710
APR. 2006
CTK-710
Ver.1 : Mar. 2007
INDEX

CONTENTS
Specifications ---------------------------------------------------------------------------------------------- 1
Block Diagram --------------------------------------------------------------------------------------------- 3
Circuit Description --------------------------------------------------------------------------------------- 4
Printed Circuit Board ------------------------------------------------------------------------------------ 5
Diagnostic Program -------------------------------------------------------------------------------------- 7
Exploded View --------------------------------------------------------------------------------------------- 9
Parts List--------------------------------------------------------------------------------------------------- 10
Schematic Diagrams ----------------------------------------------------------------------------------- 13
■ Disassembly
Disassembly Procedure: Please refer to the procedure in CTK-496 service manual since
CTK-710 has the same frame as 496.

— 1 —
SPECIFICATIONS
GENERAL
Keyboard: 61 standard-size keys, 5 octaves
Tones: 242 (113 panel tones + 128 General MIDI tones + 1 drum set)
Polyphony: 32 notes maximum (16 for certain tones)
Main Volume: Adjustable
Auto Accompaniment
Rhythm Patterns: 100
Chords: 2 fingering methods (CASIO CHORD, FINGERED)
Rhythm Controller: START/STOP, SYNCHRO, FILL-IN
3-step Lesson: 3 lessons (Step 1, 2, 3)
Playback: Repeat play of a single tune
Lesson Part: Left hand, right hand
Evaluation Mode: Scoring
Voice Fingering Guide: On/Off
Song Bank, Piano Bank
Number of Tunes: Song Bank: 50, Piano Bank: 50
Controllers: START/STOP
Display
Name display: TONE, RHYTHM, SONG BANK, PIANO BANK name/number, keyboard
settings name/value
Tempo: Tempo value, metronome, synchro standby
Chord: Chord name, Chord form
Fingering: Fingering indicators, parts
Staff: 5 octaves with sharp and flat indications, pedal symbol, octave symbol
Keyboard: 5 octaves
Other Functions
Tempo: Variable (216 steps, = 40 to 255)
Transpose: 25 steps (–12 semitones to +12 semitones)
Tuning: Variable (A4 = approximately 440Hz ±50 cents)
Accompaniment/
Song Bank Volume: Variable (100 steps, 0 to 99)
Terminals
USB port: TYPE B
Sustain Terminal: Standard jack
Phones/Output Terminal: Stereo standard jack
Output Impedance: 100Ω
Output Voltage: 4V (RMS) MAX
Power Supply Terminal: 9V DC
Microphone In: Standard jack (with microphone volume slider)
Input impedance: 2kΩ
Input sensitivity: 10mV
Power Supply: Dual power supply system
Batteries: 6 AA-size batteries
Battery Life: Approximately 4 hours continuous operation on alkaline batteries
Approximately 2 hours continuous operation on manganese batteries
AC Adaptor: AD-5
Auto Power Off: Turns power off approximately 6 minutes after last key operation. Enabled
under battery power only, can be disabled manually.
Speaker Output: 2.0W + 2.0W
Power Consumption: 9V 7.7W
Dimensions: 95.6 x 35.6 x 13.3 cm (37 11/16 x 14 1/16 x 5 1/4inch)
Weight: Approximately 4.0 kg (8.8 lbs)(without batteries)

— 2 —
ELECTRICAL
Current drain with 9 V DC:
Consumption Current 670 mA ±20 %
Consumption Current at idle 125 mA ±20 %
with 12 keys from C1 to G2 pressed in 85 SINE LEAD
Volume: maximum, Velocity: maximum
Speaker output level (Vrms with 4 Ωload each channel):
with key D2 in 85 SINE LEAD
Volume: maximun, Velocity: maximum 2100 mV ±20 %
Phone output level (Vrms with 32 Ωload each channel):
with key G1 in 85 SINE LEAD
Volume: maximun, Velocity: maximum 580 mV ±20 %
Output level (Vrms with 47K Ωload each channel):
with key E1 in 85 SINE LEAD
Volume: maximun, Velocity: maximum 2600 mV ±20 %

— 3 —
BLOCK DIAGRAM
RS
R/W
E
LDB4 ~ 7
Keyboard
MAIN PCB
(M628-MDA1)
Speakers
(L)
(R)
Main
Volume
CONSOLE PCB
( M628-CNA1)
AC ADAPTOR
DC 9V
MPU
ML6763B-NNWA-116
IC12
Filter
NJM2068M
IC5
Power AMP
LA4227-E
IC100
Phones/
Output
Mic Volume
Filter
NJM2068M
IC104
74AHCT
IC5, 6
MIC
LCD Controller
ST7066U
IC101
Power Supply
Q100 ~ Q102
D108
VD5
(5.3V)
Battery
VC
(9.0V) VCP (9.0V)
VA5
(5.3V)
Button
KEY PCB
(M627-KYA2)
KEY PCB
(M627-KYA1)
KC0 ~ 5
D1
KI0 ~ KI4
KI4 ~ KI7 KI0 ~ KI7
KO0 ~ KO7
FI8 ~ 9, KI0 ~ 2, FING, CAC, NORM, NMI, BEND

— 4 —
CIRCUIT DESCRIPTION
KEY MATRIX
KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7
FI0 C21C#21D21D#21E21F21F#21G21
SI0 C22C#22D22D#22E22F22F#22G22
FI1 G#21A21A#21B21C31C#31D31D#31
SI1 G#22A22A#22B22C32C#32D32D#32
FI2 E31F31F#31G31G#31A31A#31B31
SI2 E32F32F#32G32G#32A32A#32B32
FI3 C41C#41D41D#41E41F41F#41G41
SI3 C42C#42D42D#42E42F42F#42G42
FI4 G#41A41A#41B41C51C#51D51D#51
SI4 G#42A42A#42B42C52C#52D52D#52
FI5 E51F51F#51G51G#51A51A#51B51
SI5 E52F52F#52G52G#52A52A#52B52
FI6 C61C#61D61D#61E61F61F#61G61
SI6 C62C#62D62D#62E62F62F#62G62
FI7 G#61A61A#61B61C71
SI7 G#62A62A#62B62C72
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 B6A6G6F6E6D6 C7
C#3A#2G#2
F#2D#2
C#2 A#6 G#6F#6D#6
C#6
NOMENCLATURE OF KEYS
BUTTON MATRIX
KC4
5
6
SPEAK
–
4
KC5
8
9
+
7
KC2
STEP 3
LEFT
SYSTEM
STEP 1
STEP 2
KC3
2
3
RIGHT
0
1
KC0
SETTING
TONE
SONG BANK
FILL-IN/REW
START/STOP
KC1
TEMPO DOWN
RHYTHM
PIANO BANK
SYNCRO/FF
TEMPO UP
KI0
KI1
KI2
FI8
FI9

— 5 —
PRINTED CIRCUIT BOARD
MAIN PCB M628-MDA1

— 6 —
CONSOLE PCB M628-CNA1
KEY PCB M627-KYA1
KEY PCB M627-KYA2

— 7—
DIAGNOSTIC PROGRAM
■Initial Setting
1. Connect the AC adaptor.
2. "Main" volume: MAX
3. "MIC" volume: MIN
■How to start diagnostic program
1. Set the "POWER" switch to "ON (NORMAL)" while pressing the "0" button.
2. The massage “628 TEST” is displayed on LCD.
3. Release the “0” button.
■Diagnostic program
Message on LCD
1. MODE Switch check
1Set to “CASIO CHORD” position. Casio
2Set to “FINGERED” position. Frigerd
3Set to “NORMAL” position. Normal
2. SWITCH check
1Press “0” button. Switch
2Press the buttons in the following order.
01 02 03 04 05 262728
SwitchOK
07
06
08
09
10 11
232425
12 13 14
18 17 16 15
19 20 21 22
* Wait for confirmation sound.
* The Button number appears on the LCD.
* A buzzer sounds if buttons are pressed in a wrong order, and "CER" appears on LCD.
NOTE: This check cannot be aborted in mid-course.
3. AC adaptor check
1Press “SONG BANK”button. AC JACK
4. ROM check
1Press “2”button. ROM OK
5. MODEL check
1Press “1”button. 628vr050
6. ROM version check
1Press “3”button. 01181626

— 8—
Message on LCD
7. Sound check
1Press the “4”button. Min
* When standing in the center, the tester hears the minimum test sound in
an equal volume from both right and left speakers.
2Press the “5”button. Mid
* When standing in the center, the tester hears the medium test sound in
an equal volume from both right and left speakers.
3Press the “6”button. Max
* When standing in the center, the tester hears the maximum test sound in
an equal volume from both right and left speakers.
4Press the "+" button. Left
* When standing in the center, the tester hears the maximum test sound
fromthe left speaker.
5Press the "–" button. Right
* When standing in the center, the tester hears the maximum test sound
from the right speaker.
8. LCD check
1Press the “STEP1”button.
* All character of LCD turns on.
* There is no lack of the dot and the character.
9. APO check
1Press the “scoring”button.
* Go out from TEST mode (Power off).
* The LCD turns off.
DIAGNOSTIC PROGRAM IS FINISHED.

— 9 —
EXPLODED VIEW
18
2
18 8
5
6
4
21
26
11
9
15
13
14
12
10
1
R-1
R-2
R-5
R-5
R-4
R-4
R-3
20
7
R-5
25
23
22
24
19
3
17
16

—10 —
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.
1. Prices and specifications are subject to change
without 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.
PARTS LIST
CTK-710

—11 —
N Item Parts code Parts name Specification Q Price
Code R Remarks
Main PCB
N 1 10238296 PCB ASSY/MAIN TK-RJM506723*001 1 A
IC11 10158805 IC RH5RL33AA-T1-FA 1 C
IC13 10159723 IC RN5VD28AA-TR-FA 1 C
IC5,IC6 10116986 IC SN74AHCT1G08DCKR 2 C
IC7 10197555 IC TC7SZ14FU(TE85L.F) 1 C
L4 10158809 COIL DLP31SN221SL2L 1 X
L2,L3,L5 10095204 FERRITE BEAD BLM18AG102SN1D 3 X
L1 10122963 FERRITE BEAD BLM21AG102SN1D 1 X
Q3 10153685 FET 2SJ346(TE85L.F) 1 X
Q1,Q2 10202670 TRANSISTOR KTA2014-GR-RTK/P 2 X
X1 10211946 RESONATOR SSM1200000F17F5FZ8 1 X
Keyboard PCB
N 2 10238298 PCB ASSY/KYA TK-RJM503929*003 1 C
D701-761 10108141 DIODE 1SS133TP 61 AA X
Keyboard unit
3 69254940 KEY SET/WHITE/CB M340503*1 4 C
4 69254950 KEY SET/WHITE/CS M340503*2 1 C
5 69222740 KEY SET/BLACK 10P M111726-1 2 AQ C
6 69222750 KEY SET/BLACK 5P M111726-2 1 AH C
7 10163902 RUBBER/CONTACT RJM503854-001V01 4 B
8 10163903 RUBBER/CONTACT RJM503855-001V01 1 B
Panel unit
N 9 10236593 PLATE/DISPLAY RJM506511-001V01 1 C
N 10 10236594 RUBBER/KEY/A RJM506512-001V01 1 C
N 11 10236595 RUBBER/KEY/B RJM506513-001V01 1 C
N 12 10236596 RUBBER/KEY/C RJM506514-001V01 1 C
N 13 10236597 RUBBER/KEY/D RJM506515-001V01 1 C
N 14 10236598 RUBBER/KEY/E RJM506516-001V01 1 C
N 15 10236599 RUBBER/KEY/F RJM506517-001V01 1 C
16 10199714 KNOB/SLIDE RJM503803-002V01 3 AB C
17 69270510 CONTACT/SLIDE CSB-08D 3 AD B
N 18 10228219 SPEAKER C10JB25 2 C
N 19 10243428 COVER ASSY/BATTERY TK-M340884*020 1 B
20 10078118 CONNECTOR M440863-003V01 2 AB C
N 21 10238082 LCD TR6040N 1 C
22 69271080 TERMINAL/BATTERY (+) M440112-1 1 AB X
23 10008078 TERMINAL/BATTERY (-) M440002A-1 1 AA X
24 69271060 TERMINAL/BATTERY M440676-1 2 AA X
25 69271070 TERMINAL/BATTERY M440677-1 3 AA X
N 26 10238295 PCB ASSY/CNA1 TK-RJM506721*001 1 B
N D101 10236646 LED 1154HD-B5/12.5-90 1 C
Notes: N- New parts
Q-Quantity used per unit

—12 —
N Item Parts code Parts name Specification Q Price
Code R Remarks
IC100 10189501 IC LA4227-E 1 C
IC104,IC105 10211950 IC NJM2068M-D(TE1) 2 C
J100 10206816 JACK JY-6314*01-130 1 C MIC JACK
J101 10213695 JACK JY-6316*01-070 1 C PHONE JACK
J102 10088189 JACK DS-240A2-383V4H 1 C DC JACK
J103 10206815 JACK JY-6314*01-030 1 C SUSTAIN JACK
L101 10206672 COIL R2318-RB53856396NP 1 X
L100,L102,L103 10206680 COIL R2318-RB53856397NP 3 X
TH100 10080368 THERMISTOR MF11-103K 1 X
VR100 69304870 VARIABLE R EVND8AA03B53 1 C
Refurbish
N R-1 10236647 CASE/UPPER RJM506510-001V01 1 BZ C
N R-2 10238297 CASE ASSY/MIDDLE TK-RJM503916*005 1 C
R-3 10163935 PLATE/LOWER/A RJM503801-001V01 1 AE C
R-4 10163936 PLATE/LOWER/B RJM503802-001V01 2 AB C
R-5 69226920 RUBBER/FOOT M41361-6 5 AA C
Accessories
- 69208690 STAND/MUSIC M311760-1 1 AL C
- 10083548 BATTERY R6UW/2STA 3 AC C
- 10196868 CD ROM USB12CDROMWL1A 1 C
N 10236646 LABEL/RATING RJM504373-005V01 1 X
Notes: N- New parts
Q-Quantity used per unit

— 13 —
SCHEMATIC DIAGRAMS
MAIN PCB M628-MDA1

— 14 —
CONSOLE PCB M628-CNA1

— 15 —
KEY PCB M627-KYA1/KYA2

CASIO COMPUTER CO.,LTD.
Overseas Service Division
6-2, Hon-machi 1-Chome
Shibuya-ku, Tokyo 151-8543, Japan
Ver.1 : Mar. 2007
Correction of the DIAGNOSTIC PROGRAM (P7, P8)