Yamaha KMA-1000 Service Manual page 39

A B C
FUNCTION 3/3
1
Page 37 L5
to FUNCTION (1)_CB12
2
CB601
KEY CONTROL IN
3
Page 37 G2
to FUNCTION (1)_CB19
CB602
MIC ECHO
4
KEY CONTROL OUT
5
6
7
8
FUNCTION (3)
9
10
D E F
KMA-1000
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
IC602: YSS205B-F
Karaoke processor
SRAM
BCI.SDSY.DI
3.9 0
3.9 3.9 /ANLS
3.9 3.9
CVA
3.9 2.7
3.7 2.5
AIL
3.8 2.6 CNL
2.6 2.6
AIR
2.7 2.6
CHR
2.6 2.6
2.6 2.6
MIC
CHM
2.6 2.6
2.6 2.6
CUB
4.3 2.6
5.1 2.6
0 0
5.1
3.9 0
3.9 3.9
3.9 3.9 IC605: PCM1780DBQR
3.9
2.7 Audio digital-to-analog converter
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
KMA-1000/KMA-950
/IC
RD
LD
DMPX
/CS
Microprocessor
/SCK
interface
CDI
RA
DSP
BCO
A/D
RD
L/R
MPX
DO
LD
LA
DA AOL
D/A
A/D
LA AOR
MIC
Clock
Suspected SRAM oscillate
interface
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
39