Schematic Diagram - Yamaha MCX-A10 Service Manual

A B C
SCHEMATIC DIAGRAM (CORE)
1
Point q (Pin 6 of IC21) Point w (Pin 1 of IC22)
2
IC1 : PQ018EZ01ZP IC2 : PST572CMT-R
Voltage Regulator System Reset
IC21, 22 : SN74AHC2GU04HDCTR
Triple Inverters
1 VCC
DC INPUT 1 3 DC
(VIN) OUTPUT
1A 1
(VO)
I C 3 OUT
3Y 2
2A 3
2 ON/OFF
2 GND
CONTROL
GND 4
5 (VC)
GND
3
RESET
3 CH1
0.1
3 CH2
0
0
5.0 5.0 5.0 0.1 0.1 3.3
0
3.3 0.1 0.1 3.3
4
REGULATOR
3.3
5
3.3
3.3
3.2
0
3.3
3.3
0
3.3
2.3
3.3
0
3.3
0
0
3.3
3.3
3.3
3.3
3.3
3.3
0
3.3
3.3
6 1.6
3.3
3.3
0
3.3
1.8
0
0
3.3
3.3
3.3
0
3.3
3.3
0
0
1.8
0.8
0
0
0.7
1.8
3.0
0
7 0
1.8
1.7
1
8
BUS TRANSCEIVER
0
0
0
0
3.9 0
3.3 0
3.3 0
3.3 0
0 5.0
5.0 0
9
10
EUROPE
D E F
Point e Point e
CH 1 : Pin 1 of IC2 CH 1 : Pin 1 of IC2
CH 2 : Pin 3 of IC2 CH 2 : Pin 3 of IC2
CH 1
CH 1
CH 2
CH 2
↑ ↑
↑
AC CORD ON AC CORD OFF AC CORD ON
(Connect the AC adaptor) (Disconnect the AC adaptor) (Connect the AC adaptor)
IC19 : SN74LS06NSR IC20 : 74LCX14MTCX
Hex O.C. Inverters Hex Schmitt Triger Inverters
8 VCC
1A 1 14 V I1 1 14 V
DD DD
7 1Y
1Y 2 13 6A O1 2 13 I6
6 3A
2A 3 12 6Y I2 3 12 O6
5 2Y
2Y 4 11 5A O2 4 11 I5
3A 5 10 5Y I3 5 10 O5
3Y 6 9 4A
O3 6 9 I4
V 7 8 4Y V 7 8 O4
SS SS
BUS BUFFER
0
3.3 0
0.1
0
3.3 3.3
2.9
3.3
3.3
3.3
2.0
0 3.3 2.3
5.0 3.3 3.3 3.3
0
1.0
0.8
0 0 0 0
0.1 0 1.1 0 0.6
3.3 3.3
2.5
0 0
2.9
3.0
3.3
0.4
2.7
0
2.7
2.4
0
0
2.9
2.9
0
0.6
0
3.3
0
3.2
0
3.3
1.5
3.3
3.3
1.7
0
0.8
0.6 3.3
3.3
2.2
3.3
1.9
3.3
3.3 3.3
0.7 0
0
3.3
0.7
3.3
0.3 0
2.2
2.3
0.6
0.6
0.5
0.9
CPU
2.5
3.3
0.3
0
2.2
0.6
2.0
1.8
2.0
0
0.2
~
~
2.4
1.7
3.3
0.2
0
1.1
2.3
0.4
0.3
1.0
2.3
3.3
3.3
3.3
3.3
3.3
3.3
0
1.8
1.8
0
0
1.6 3.3
0.6 3.3
3.3 0.1
3.3
3.3
3.3 3.3
CPLD
3.3 0
0.1
0 0
3.3 3.3
3.3 0
3.2 3.3
3.3 3.3
3.3
3.3 3.3
2.9 3.3
3.3
3.3 3.3
3.3 3.3
3.3 0
3.3 3.3
3.3 0
3.3 0
3.3 0.3
0 3.3
G H
Point r (Pin 128 of IC901)
4
3.3
0
3.3
1.4
0
0 3.3
3.3
0 3.3
3.3
0 3.3
3.3
LAN
0
0.7
0.7
0
0.7
0 0.7 0
3.3
3.3
3.3
3.3
3.3 3.3
3.3
0
0
0
3.0
0
3.3
3.3
BUS BUFFER
0 3.3
0 1.7 3.3
0.1 0.8 3.3
0 0 0
2.9 0.6 0.1
3.2 2.2 0.1
3.2 3.3 0
3.1 1.9 0.1
3.3 0.7 0.1
0
0 0
1.1 0.7 0.1
2.5 0.3 0.1
0.8 2.2 3.3
2.5 2.3 3.3
0 0 0
2.9 0.6 0.1
3.1 0.6 0.1
3.3
3.3 3.3
0.8 0.5 3.3
2.5 0.9 3.3
0 0 0
2.8 2.5 0.1
2.8 0.3 0.1
0 3.3 3.3
0 3.3 3.3
3.3 2.2 0.1
2.6 0.6 0.1
0 0 0
3.2 2.0 0.1
0 2.0 0.1
3.3 3.3 0.3
0.2
0 0.1
3.3 ~ 0.1
0 0 0
3.3 ~ 0.1
3.3 2.4 0.1
1.5 1.7 0.1
3.3 0.2 0.1
0 0 0
3.3 1.1 0.1
3.3 2.3 0.1
3.3 2.3 3.3
3.3 0.4 0.1
0.3 0.1
3.3
0 0 0
3.3 1.0 0.1
3.3 2.3 0.1
3.3 3.3
0
SDRAM 4.4 5.0
FLASH ROM
0
3.3 5.0
0.6 0.3
3.3 0
0.8 2.5
0.6 0.9 2.9 2.9
0 3.3 2.4 3.3
0.9 0.5 2.7 0
2.5 0.6 2.7 0.3
3.3 0 0.4 0.3
0.3 0.6 3.0 2.5
3.3 3.3
2.2 2.3 2.9 0.7
0 3.3 2.5 0.9
0.1
0.6 2.2 0.6 0.7 3.3
3.3 3.3
3.3 0 1.0 0.5
3.2 3.2 1.9
3.3 3.3 3.3
3.3 3.2 3.3
0.1
3.3 2.4 0.6 0.1
3.3 3.3 2.2
0.1
0.1
3.2 0.6
0.1
0.1
2.7 2.7 0.6 0.6
2.4 3.0 0.6 2.3
0.1
0.1
0.4 2.9 0.6 0.8
0
2.9 2.5 0.8 2.2
0.1 0.6 1.0 1.7
0
2.0 0.8 2.3 3.3
2.3 1.0 3.3 0
0 4.4
3.3 0 3.3 3.3
0.1 3.3
2.9
0
0.1 0.1
3.3 0
EEPROM
2.2 1.0 3.3
3.3
3.3 0
2.5
2.2 1.0 3.3
0.6 0.3
3.2
3.3
0 3.3
0.1 0.1
2.0 0.4 3.3 3.3
0.2 2.3 0 0
0.1 0.1
3.3 0 0 3.3
0.1
0.1 0.1
~ 1.1 0 3.3
0.2
~ 0.1 0.1
0 3.3
0
2.4 1.7
3.3 0
0
3.3
3.3 3.2
0 4.4
3.2 2.4
3.3 3.3
3.3 0
3.2
2.7 2.7
2.4 3.0
0.4 2.9
2.5
2.9
3.3 0.6 BUS SWITCH
2.0 0.8
2.3 1.0
3.3 0
VCXO
2
1.6 1.7
1.6
1.7
1.6
1.6
1.7
1.7
0 0
I J K
3.3
0
0
0
0
0
0
0
0
ETHERNET
3.3
3.3
0
0
0
0
3.2
2.8
0
3.3
3.3
3.3
0.1
0.1
0
3.3
3.3
0.1
0.1
0
0.1
0.1
WIRELESS LAN CARD
0
0
0
0 0
0
3.3 0
0.1
1.6
0.1 3.3
3.3 3.3
3.3 3.3
0.1
3.3
0.1 3.3
3.3
DSP
0
3.2
0.1 0
0.1
0 0
1.6
3.3
0 3.3
0 0.1
3.3
1.6
3.3 3.3
0.1 0
2.9
3.2
1.7
3.1
3.3
3.3
1.1
2.5 1.7
0.8
2.5
1.7
2.9 0
1.6
0
0 0
IC26 : AK4382AVT
D/A Converter
CSN 6
DE-EMPHASIS
µP
CONTROL
CCLK 7
INTERFACE
CDTI 8
LRCK 8X
4
INTERPOLATOR
AUDIO
BICK 2 DATA
INTERFACE
8X
SDTI 3 INTERPOLATOR
5.0
0
1.6 0
1.7 0 0
0
0 5.0
1.7 0
3.3
2.5
3.3 2.5
3.3 2.5
0 2.5
0
DAC
0
0
-5.0
L M N
MCX-A10/MCX-SP10
IC7, 8 : W986416DH-7
1M x 16-Bit x 4 Banks SDRAM CLK
CLOCK
BUFFER
CKE
VCC 1 54 VSS
DQ0 2 53 DQ15
VCCQ 3 52 VSSQ CS CONTROL
DQ1 4 51 DQ14 SIGNAL
RAS GENERATOR
COMMAND
DQ2 5 50 DQ13
VSSQ 6 49 VCCQ CAS
DECODER
DQ3 7 48 DQ12 COLUMN DECODER COLUMN DECODER
WE
DQ4 8 47 DQ11
VCCQ 9 46 VSSQ
DQ5 10 45 DQ10 CELL ARRY CELL ARRY
A10 BANK #0 BANK #1
DQ6 11 44 DQ9
VSSQ 12 43 VCCQ
MODE
DQ7 13 42 DQ8 A0 REGISTER SENSE AMPLIFIER SENSE AMPLIFIER
VCC VSS ADDRESS
14 41 BUFFER
A9
LDQM 15 40 NC
A11 DMn
WE 16 39 UDQM BS0
BS1
CAS 17 38 CLK
RAS 18 37 CKE
DQ0
CS 19 36 NC DATA CONTROL
DQ
CIRCUIT BUFFER
BS0 20 35 A11 DQ15
BS1 21 34 A9
REFRESH COLUMN
COUNTER UDQM
A10/AP 22 33 A8 COUNTER
LDQM
A0 23 32 A7
A1 24 31 A6
A2 25 30 A5
A3 26 29 A4
VCC 27 28 VSS COLUMN DECODER
COLUMN DECODER
CELL ARRY CELL ARRY
BANK #2 BANK #3
SENSE AMPLIFIER SENSE AMPLIFIER
IC11 : MBM29LV160BE70T
16M-Bit Flash ROM
DQ0~DQ15
A15 1 48 A16 VCC
RY/BY
BUFFER RY/BY
A14 2 47 /BYTE VSS
A13 3 46 VSS
ERASE CIRCUIT I/O BUFFER
A12 4 45 DQ15
A11 5 44 DQ17 WE
BYTE
A10 6 43 DQ14
RESET CONTROL
A9 DQ6
7 42 CIRCUIT
A8 8 41 DQ13 (COMMAND REGISTER)
A19 9 40 DQ5 WRITE CIRCUIT
NC 10 39 DQ12
STB
CHIP ENABLE
/WE 11 38 DQ4 CE DATA LATCH
OUTPUT ENABLE
/RESET 12 37 VCC
OE CIRCUIT
NC 13 36 DQ11
NC 14 35 DQ3
RY/BY 15 34 DQ10
A18 16 33 DQ2
A17 17 32 DQ9 Y DECODER Y GATE
A7 18 31 DQ1
STB
A6 19 30 DQ8
A5 20 29 DQ0 WRITE/ERASE
LOW VCC DETECT 16,777,216
PULSE TIMER
A4 21 28 /OE
X DECODER CELL
A3 VSS
22 27 A0~A18 MATRIX
A2 23 26 /CE
A1 A0 A-1
24 25
IC12 : AT24C02N-10SI
IC14, 15 : FST3383MTC
EEPROM
10-Bit Low Power Bus-Exchange Switch
WP 7 A0 C0
BE 1 24 VCC
SCL 6
START STOP C0 2 23 D4
LOGIC
SDA 5 A0 B4
3 22
SERIAL
EN
B0 4 21 A4
CONTROL H. V. PUMP/TIMING B0 D0
LOGIC D0 5 20 C4
LOAD C1 6 19 D3
A1 7 18 B3
COMP DATA RECOVERY A4 C4
DEVICE ADDRESS
B1 A3
COMPARATOR 8 17
LOAD INC D1 9 16 C3
A2 3
C2 10 15 D2
R/W
A1 2 DATA WORD A2 11 14 B2 B4 D4
EEPROM
ADDR/COUNTER
GND BX
A0 1 12 13
BX
VCC BE
8
Y DEC SERIAL MUX
GND 4
BE BX A0–A4 A0–A4 FUNCTION
H X High-Z State High-Z State Disconnect
D IN D OUT/ACK
LOGIC L L C0–C4 D0–D4 Connect
L H D0–D4 C0–C4 Exchange
D OUT
IC25 : 74VHCT245AMTCX
Octal Buffer/Line Driver with 3-State
Outputs
REGULATOR
DIR 1 20 V
CC
A1 2 19 ENG
A2 3 18 B1
A3 4 17 B2
A4 5 16 B3
A5 6 15 B4
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
IC4, 5, 9, 10 : SN74LVCHR16245AGR
16-Bit Bus Transciver 3-State Output
INPUTS
OPERATION
1DIR 1 48 1OE OE DIR
1B1 2 47 1A1
L L B data to A bus
1B2 3 46 1A2
L H A data to B bus
GND 4 45 GND H X isolation
1B3 5 44 1A3
1B4 6 43 1A4
VCC VCC
7 42
1B5 8 41 1A5 1DIR 1
IC17 : PQ070XZ5MZP
1B6 9 40 1A6
48 1OE
GND GND
Voltage Regulator 10 39
1B7 11 38 1A7 1A1 47
1B8 12 37 1A8
2B1 13 36 2A1 2 1B1
2B2 14 35 2A2
GND 15 34 GND
DC 1 3 DC To Seven Other Channels
2B3 16 33 2A3
INPUT OUTPUT 2B4 2A4
17 32
(VIN) (VO)
VCC 18 31 VCC
SPECIFIC IC 2B5 19 30 2A5 2DIR 24
2B6 2A6
20 29 25 2OE
GND 21 28 GND
ON/OFF 2 4 OUTPUT 2B7 22 27 2A7 2A1 36
2B8 23 26 2A8
CONTROL ADJUSTMENT
13 2B1
2DIR 24 25 2OE
(VC) 5 (VADJ)
GND
To Seven Other Channels
IC6 : XC9572XL-10TQ100C
CPLD
MCLK
3
1 JTAG
1 IN-SYSTEM PROGRAMMING CONTROLLER
JTAG PORT CONTROLLER
14 VDD
CLOCK
VSS
13 54
DIVIDER FUNCTION
I/O 18 BLOCK 1
16 DZFL
Macrocells
I/O
1 to 18
15 DZFR
I/O
54
∆ ∑ I/O FUNCTION
12 AOUTL+
18 BLOCK 2
SCF
MODULATOR
11 AOUTL– Macrocells
I/O 1 to 18
BLOCKS
I/O
∆ ∑ AOUTR+ 54
10 FUNCTION
I/O
SCF 18 BLOCK 3
MODULATOR
9 AOUTR–
I/O Macrocells
1 to 18
5 I/O
3
PDN I/O/GCK
54
1 FUNCTION
I/O/GSR 18
BLOCK 4
2 Macrocells
I/O/GTS
1 to 18
IC27 : µPC4570G2
Dual OP-Amp
OUT 1 1 8 +V CC
–IN 1 2 7 OUT 2
+ – + –
+IN 3 6 –IN
1 2
–V 4 5 +IN
CC 2
* 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.
41