Casio_CTK-650_Service_Manual.pdf

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CTK-650
CTK-650
ELECTRONIC KEYBOARD
CONTENTS
SPECIFICATIONS ....................................................................................................1
BLOCK DIAGRAM ...................................................................................................2
CIRCUIT DESCRIPTION
CPU (HD6433298A16P : H8/329) .....................................................................3
DIGITAL SIGNAL PROCESSOR, LSI-S (HG51A115A01FD) ..........................4
KEY TOUCH LSI (HG52E35P) ..........................................................................5
POWER AMPLIFIER (LA4598) .........................................................................6
BUTTON MATRIX ............................................................................................. 7
KEY MATRIX .....................................................................................................8
WIRING DIAGRAM ...................................................................................................9
IC LEAD IDENTIFICATION AND INTERNAL CIRCUIT ..........................................10
PCB VIEW AND MAJOR WAVEFORMS .................................................................12
SCHEMATIC DIAGRAM ...........................................................................................13
PARTS LIST .............................................................................................................15
EXPLODED VIEW ....................................................................................................19
SPECIFICATION
Number of keys:
Polyphony:
Preset tones:
Magical preset:
61
32-note(max.)
128
BREAK BEAT
16
MELODYCOMP
8
SHADOW DRUM 4
FREE SESSION
32
TONE STACK
40
KEY SPLIT
12
HYPERACTIVE
16
Rhythm patterns
128
Tempo Adjustable(40 - 255)
Chords Three system: CASIO CHORD, FINGERD,
FULL-RANGE CHORD
Other
Variation pattern, fill-in pattern, intro/ending pattern for each
rhythm.
song:one
System:Real-time recording
Memory capacity:Up to 1,300 notes
4 setups
Phrases
10
Drums
10
SE/Percussion 10
Controller
2
REVERB 1, REVERB 2, REVERB 3, CHORUS, TREMOLO, PHASE
SHIFTER, ORGAN SP, ENHANCER, FLANGER, EQLOUNDNESS
3 tunes
Transpose (F# ~ C ~ F : half-note)
Tuning adjustable A4 = 440KHz 50 cents increments
Volume control (Main /Accompaniment)
12cm diameter X 2 (Output:2W+2W)
Power supply
9V DC jack
Headphones
Stereo mini jack
Output impedance:100 ohm
Output voltage:4.5V(RMS. max)
Assignable jack
Standard jack
MIDI
IN, OUT
3-way AC/DC power sources;
Batteries
Six D-size
Battry life
Approximately 5 hours on R20P(SUM-1)
AC
Required optional AD-5 AC adaptor
Car battery
Required optional CA-5 car adaptor
Approximately 6 minutes after the last operation
7.7W
942 X 367 X 135 mm(HWD)
31 7/16" X 14 1/2" X 4 3/8" inches(HWD)
5.2kg(11.7lbs) excluding batteries
Score stand
Auto-accompaniment:
Song memory:
Registration memory:
Sound control pads:
Digital effects:
DEMO tunes:
Other functions:
Speakers:
I/O terminals:
Power supply:
Auto power off:
Power consumption:
Dimensions:
Weight:
Accessory:
—1—
BLOCK DIAGRAM
RAM-1(64K)
MN4464-08L-1
7-Segment
LED
LO0~LO4
La
~Lp
LED driver
BA612
KO0~4
KC0~KC7
Keyboard
SI0~SI7
FI0~FI7
Key Touch
LSI
HG52E35P
D0~D7
Address Bus
CPU
HD6433298A16P
(H8/329)
KO0~KO5
Buttons
KI1~KI7
VDD
MIDI
OUT
IN
100K
Power Switch
RA0~RA19
ROM(16M)
TC5316200CP-C079
RD0~RD15
EA0~EA12
LSI-S
HG51A115A01FD
ED0~ED7
RAM-2(64K)
MN4464-08L-2
WCK1
SLOP
BCK
D/A Converter
µPD6376CX
Filter
Filter
Main
Volume
Output
Power Amplifier
Speakers
LA4598
—2—
CIRCUIT DESCRIPTION
CPU(HD6433298A16P : H8/329)
The 16-bit CPU contains a 32K-byte ROM, a 1K-byte RAM, an 8-bit A/D converter, timers and I/O ports. The
CPU accesses to the DSP, Key Touch LSI, RAM, buttons and LEDs. But the CPU directly receives MIDI and
pedal signals.
Pin No.
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
17,18
19,20
Terminal
P40/IRQ2
P41/IRQ1
P42/IRQ0
P43/-RD
P44/-WR
P46/PHI
P47/-WAIT
P50/Txd
P51/Rxd
P52/SCK
-RESET
-NMI
Vcc
-STBY
Vss
XTAL,EXTAL
MD1,MD0
In/Out
In
In
In
Out
Out
Out
In
Out
In
Out
In
In
In
In
In
In/Out
In
Function
KO signal data.
Timing signal for KO signal.
APO signal output.
Read signal outpt.
Write signal output.
System clock output.
Wait signal input
MIDI signal output.
MII signal input.
Reset signal output.
Reset signal input.
Power on signal input.(Low active)
+5V source.
Standby signal input. Connected to +5V.
Ground(0V) source.
20MHz clock pulse input/output. Connected to crystal.
Selection for system.
MD1 MD0
MODE
0
1 MODE-1 : Internal ROM mode
1
0 MODE-2 : Non internal ROM mode
1
1 MODE-3 : Single chip mode
21
AVss
In
22
P70/AN0
In
23~29 P71/AN0~P77/AN7
In
30
AVcc
In
31~38 P60/FTCI~P67/TMO1 Out
39
Vcc
In
41~56 P26/A14~P10/A0
Out
48
Vss
In
57~64
P30/D0~P37/D7
In/Out
Analog ground source.
Connected to ground.
KI signal input.
+5V source.
Control signal for 7-segment LED.
+5V source.
Address bus.
Ground(0V) source.
Data bus.
—3—

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