Yamaha KMA-1080, Service Manual

Page: 32 / 51

A B C D E F G H
1
2
3
4
5
6
I J K L M N O
7
8
9
10
32
KMA-1080/KMA-980
* All voltages are measured with a 10M
Ω
/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.
DVD IN
MUSIC IN
(L ch)
MUSIC OUT (L ch)
MUSIC OUT
L
MIC IN
MIC OUT
MIC OUT (L ch)
0
0
0
0
0
0
0
0
0
0
0
0
11.8
0
0
0
0
0
0
0
0
0
0
5.1
2.5
2.6
5.1
2.6
2.6
2.6
5.1
5.1
5.1
5.1
0
0
2.6
0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11.3
11.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2.8
2.6
2.6
5.1
0
-11.5
11.8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0
0
0
0
0
0
9.3
0
5.1
0
5.1
-11.5
0
11.8
0
0
0
0
0
0
0
0
0
0
0
0
0
5.0
11.8
0
11.8
11.8
-11.5
11.8
11.8
11.8
11.8
-11.5
-11.5
0
0 0
0
-11.5
-11.5
-11.5
2.6
2.6
5.1
2.6
2.6
2.6
5.1
5.1
5.1
5.1
0
0
2.6
0
0 0
0
0
0
0
11.8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-11.2
-11.2
-11.2
-11.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-11.2
-11.2
-11.2
-11.2
-11.2
-11.2
-11.2
-11.2
0
0
11.8
-11.5
11.8
-11.5
-11.5
11.8
0
0
0
0
0
0
9.0
3.4
0
0 0
0
3.4 0 5.1 0 0
0 0
0 0 0 5.0
0
0
0
0
0
0
0
0
5.1
5.1
0
0
0
-11.5
5.1
5.1
4.9
11.8
0
0
2.6
2.8
0.9
0
0
0
0
4.9
0
0.9
1.2
1.2
0
0
0
0
0
0
4.5
0.7
0
0
0
0
0
0
0
0
0
0
5.1
5.1
0
1.2
5.0
5.0
5.0
9.3
9.3
5.0
5.2
0.9
0.9
5.1
5.1
5.1
5.0
2.6
5.2
5.0
5.1
5.1
0
0
0
0
0
0
0
5.1
0
0
5.1
5.1
4.9
5.1
5.1
0
5.1
5.1
5.1
5.0 0 0
0
0 5.1 5.1
5.1
5.0 5.0
0
5.1 5.1
0
5.0 4.5 2.6
2.4
0.7
11.8 11.8
11.7
-11.2
11.7
-11.2
0
11.7
0
0
0
5.1
11.7
0
0
5.0
0
0
-11.5
0
0
-11.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0 0
0 0
0
0
0
0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5.1
5.1
11.8
-11.5
-4.9
-4.9
-4.9
0
5.1
5.1
5.1
5.1
0
0
0
4.9
CB2
CB22
CB19
CB15
W2
CB17
W1
CB3
W3
CB12
CB21
IC1
IC1
IC2
IC2
IC3
IC3
IC4
IC4
IC5
IC5
IC5
IC6
IC6
IC17
IC8
IC9
IC7 IC7 IC11
IC11
IC10
IC18
IC10
IC18
IC14
IC14
IC15
IC16
IC618
IC618
IC616
IC616
IC616
IC616
IC617
IC617
IC617
CB4
IC5
IC5
IC5
MAIN MICROPROCESSOR
EEPROM
MUTE
MUTE
MUTE
MUTE
INPUT SELECTOR
MIC VOLUME
MUSIC VOLUME
MIX AMP
LEVEL DET.
LEVEL DET.
LEVEL DET.
MUTE CONTROL
BUFFER
PRE AMP
BUFFER
+5V
REGULATOR
LPF
SUBWOOFER AMP
4
5
5
CH1
CH2
Page 35 L4
to OPERATION (1)_CB237
Page 31 A5
to DSP (1)_CB2
Page 36 A3
to MAIN (1)_CB401
Page 34 I2
to OPERATION (2)_CB706
Page 36 D1
to MAIN (1)_CB402
Page 37 E4
to MAIN (2)_W552
Page 33 K2
to FUNCTION (2)_CB304
Page 31 A7
to DSP (1)_CB3
Page 33 D4
to FUNCTION (2)_W302
FUNCTION (1)
ANALOG INPUT
ANALOG INPUT
DVD (L/R)
DVD (L/R)
AUX (L/R)
BGM (L/R)
TAPE IN (L/R)
TAPE OUT (L/R)
(Writing port)
DVD
(INPUT LEVEL)
AUX
(INPUT LEVEL)
BGM
(INPUT LEVEL)
TAPE
(INPUT LEVEL)
SUB WOOFER 2
(WITH LPF)
PRE OUT (L/R)
SUB WOOFER 1
KMA-1080 only
KMA-980 only
KMA-1080 only
KMA-1080 only
KMA-1080
KMA-980
R833
no_use
100K
R834
100K
no_use
KMA-1080
KMA-980
R85
150K
0
R104
470K
0
2.2K
2.2K
2.2K
2.2K
FUNCTION 1/2
IC1–4, 6, 7, 10, 11, 14, 18,
618:
UPC4570G2-E1-A
Dual operational amplifier
+ – + –
1
2
3
4
8
7
6
5
OUT
1
OUT
2
–IN
1
+IN
1
+IN
2
-IN
2
–V
CC
+V
CC
IC5: NJU7313AM
Analog function switch
2
3
4
5
6
7
8
9
10
11
12
13
28
1 14
15
16
17
18
19
20
21
22
23
24
25
26
27
LEVEL SHIFTER
LA
TCH
LEVEL SHIFTER
LA
TCH
CONTROL
R1
R2
R3
R4
R-COM1
R5
R6
R-COM2
R7
R8
R-COM3
DATA
CK
Vss
L1
L2
L3
L4
L-COM1
L5
L6
L-COM2
L7
L8
L-COM3
ST
V
DD
V
EE
12 LIN2
9 LOUT
8 VREF
VREF
VREF
256
256
Reset
Vref
Generator
&
Reset
pulse
Generator
2
SDATAO
20
SDATAI
19 CSN
1
SCLK
16
TE
18
ZCEN
S/P
Register
Control
Register
L
Zero Cross
Detection
IC8, 9: YAC520-EE2
Stereo digital volume controller
11 LIN1
4 DVSS
3
DVDD
13 AVSS
6 AVDD
17 ICN
+
–
R
14 RIN2
7 ROUT 15 RIN1
+
–
16
IC16: M95010-WMN6TP
1 k-bit serial SPI bus EEPROM with high speed clock
5
2
6
1
3 Control Logic
I/O Shift Register
Y Decoder
X Decoder
1 page
High Voltage
Generator
Address Register
and Counter
Data
Register
Status
Register
Size of the
Read only
EEPROM
area
Q
D
C
W
S
HOLD
2
1 8
7
6
5
3
4
S
Q
Vss
Vcc
HOLD
C
D
W
7
IC17: NJM78M05DL1A
Voltage regulator
IN
OUT
GND
Timer RA (8-bit)
Timer RB (8-bit)
Timer RC (16-bit)
Timer RE (8-bit)
Timer RF (16-bit)
Timer RD (16-bit x 2-channel)
Timer
Internal peripheral functions
I/O port
Watchdog timer
(15-bit)
A/D converter
LIN module
(10-bit
X
12-channel )
D/A converter
(8-bit
X
2-channel )
(1-channel )
UART or
clock synchronous serial I/O
(8-bit
X
3-channel)
(8-bit
X
1-channel)
System clock generator
12C BUS interface
or clock synchronous type
serial I/O with chip select function
X
IN
-X
OUT
X
CIN
-X
COUT
High speed On-Chip Oscillator
Low speed On-Chip Oscillator
R8C/Tiny series
microprocessor core
Port P4
3 2
Port P5
5
Port P6
8
Port P8
7
Memory
ROM
(Note 1)
RAM
(Note 2)
Note 1: ROM size depends on microprocessor type.
Note 2: RAM size depends on microprocessor type.
Multiplier
8
Port P0
8
Port P1
8
Port P2
8
Port P3
R0L R0H
R1H
R1L
R2
R3
SB
FLG
USP
ISP
INTB
PC
A0
A1
FB
IC15: R5F212A8SNFA
Microprocessor
IC616, 617 : TC74HC4053AFT
Analog multiplexer/demultiplexer
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
BINARY TO 1-OF-8
DECODER WITH INHIBIT
LEVEL
CONVERTER
VCC INHIBIT
A
B
C
GND
VEE
0X
1X
0Y
1Y
0Z
X-COM
Z-COM
Y-COM
SW
SW
SW
SW
SW
SW
11
6 16
10
9
8
7
12
13
2
5
3
1
14
15
4
Point
r
Pin 7 of IC15
Point
t
CH 1 : Pin 62 of IC15
CH 2 : Pin 6 of IC15
↑
Power cable on
↑
Power cable on
↑
Power cable off