Yamaha KMA-1000 Service Manual page 46

A B C
KMA-1000/KMA-950
FUNCTION 3/3
1
Page 44 L5
to FUNCTION (1)_CB12
2
CB601
KEY CONTROL IN
3
Page 44 G2
to FUNCTION (1)_CB19
CB602
MIC ECHO
4
KEY CONTROL OUT
5
6
7
8
FUNCTION (3)
9
10
46
D E F
KMA-950
MIC MIX
0 0
0
IC614
0 0
IC614
0
2.5
0
IC615
0 2.6
IC612 2.6
0
0
0
IC612
0 2.6 2.6
IC615
2.5
IC608, 610–612, 614, 615:
UPC4570G2-E1-A
Dual operational amplifier
OUT +V
1 1 8 CC
–IN 1 OUT 2
2 7
+ – + –
+IN -IN
1 3 6 2
–V 4 5 +IN
CC 2
G H I
2
2.5
3.9 2.6
3.7 2.6
3.9 2.6
KARAOKE
3.9 2.6
3.9 PROCESSOR 2.6
3.9 2.6
0 2.6
5.1 2.6
5.1 5.1
0 2.6
0 2.6
0 2.6
0 2.6
2.6
0 2.6
0
0 2.6
2.6
2.6
2.6
DAC
2.6
2.7
IC608
2.6
IC605
2.6
2.6
IC608
2.6
0
0 0
IC610
0 0
IC611
0
0
0
0
IC611
0 0
IC610
0
J K L
SRAM
3.9 0
3.9 3.9
3.9 3.9
3.9 2.7
3.7 2.5
3.8 2.6
2.6 2.6
2.7 2.6
2.6 2.6
2.6 2.6
2.6 2.6
2.6 2.6
4.3 2.6
5.1 2.6
0 0
5.1
3.9 0
3.9 3.9
3.9 3.9
3.9
2.7
3.7 2.5
3.5 2.6
2.6 2.6
BCK
2.6
2.7
LRCK
2.6 2.6
DATA
2.6 2.6
2.6 2.6
2.6 2.6
(FMT)
4.3 2.6
5.1 2.6
MS (DEMP0)
0 0
MC (DEMP1)
5.1
MD (MUTE)
(TEST)
SCK
IC606, 607: M5M51008DFP-55H
131072 X 8 bit CMOS static RAM
A3 9
A2 10
A5 7
A6 6
A7 5
A12 4
A14 3
A16 2
A15 31
A13 28
A8 27
A9 26
A11 25
A4 8
A1 11
A0 12
A10 12
* All voltages are measured with a 10MΩ/V DC electronic volt meter.
* Components having special characteristics are marked Z and must be replaced
with parts having specifications equal to those originally installed.
* Schematic diagram is subject to change without notice.
M N O
IC602: YSS205B-F
Karaoke processor
/IC
RD
BCI.SDSY.DI
LD
DMPX
/CS
Microprocessor
/ANLS /SCK
interface
CDI
RA
CVA
DSP
AIL BCO
A/D
RD
CNL L/R
MPX
DO
LD
LA
AIR
DA AOL
CHR
D/A
A/D
LA AOR
MIC MIC
CHM
CUB
Clock
Suspected SRAM oscillate
interface
IC605: PCM1780DBQR
Audio digital-to-analog converter
Audio
Serial V L
Output Amp OUT
Port
DAC and
Low Pass Filter
4 /8
Oversampling
Enhanced
Digital
Multilevel
Filter V
COM
Delta Sigma
With
Modulator
Function
Serial
Control
Control
Port Output Amp
DAC and
Low Pass Filter V OUT R
System Clock
System
Clock Zero Detect
Power Supply
Manager
13 DQ1
14 DQ2
15 DQ3
131072 WORDS 17 DQ4
X 8 BITS
18 DQ5
(512 ROWS
19 DQ6
X 128 COLUMNS
X 16 BLOCKS) 20 DQ7
21 DQ8
CLOCK
GENERATOR
29 W
22
S1
30 S2
24 OE
32 V
CC
16 GND(OV)
Point w Pin 57 of IC602