Block Diagram - Yamaha PORTATONE PSR-9000 Service Manual

PSR-9000

BLOCK DIAGRAM

PS/2
Character
Keyboard
FDD
DJACK
FDC
82C51
IC7
IC17
VCC 8M
DM
J LC/FS
Key Scan
GND CPU
FS Keyboard
HD63B01
IC5
IC30
TO HOST
10M
MIDI IN
A
SIO4
MIDI OUT
MIDI IN
B
IC26
MIDI OUT
Mac
PC-1
PC-2
MIDI
FOOT SW1
FOOT SW2
FOOT VOL
MOD,PITCH
WHEEL
PANEL1,2
Panel Scan
CPU
IC1
Panel SW,LED
SCSI
IC31
22.5M
8
BACKLIGHT
(OPTION)
LCD
2.5"
HDD
SRAM
256Kbit
IC1
LCDC
Clock(10MHz)
IC4
IC13,14 IC15
D0~15
A0~4
CN CN
D0~31
Flash ROM
D0~7
D0~7
16Mbit
A1~19
IC27
DFF
DFF
Flash ROM
D0~7
16Mbit
A1~20
IC28
Mask ROM
D0~7
16Mbit
A1~20
IC29
D0~15
IC9,10,11,12
A2~7
Sub CPU
SH7043
IC14,15,16
7M
IRQ
Main CPU
SH7043
IC1
D0~31
A0~21
DRAM DRAM
16Mbit
16Mbit
D0~15 IC2 IC3
A2~5
Flash ROM Flash ROM
16Mbit
16Mbit
IC6
IC7
VIDEO
OUT
INVERTER
RGB Encorder
INVERTER
IC11
adrs
Video OUT
Gate Array
data
IC8
AMP
14.318M 17.734M
DP
TG
PIF32
IC43
A1~21
DRAM DRAM
4Mbit
4Mbit
VOP3
IC39 IC38
IC11
IC2
Flash ROM Flash ROM
4Mbit 4Mbit
IC26 IC25
DRAM
4Mbit
Mask ROM IC6
16Mbit
IC33
AJACK
+24V
IC1
IC2,3 5BAND EQ
IC2
MV
AM
MEL,CLOCK
Lo Data
SWP30
Lo Addres
(Master)
MEL,CLOCK
Hi Data
Hi Address
IC1
DRAM DRAM
4Mbit
4Mbit
DRAM
IC47 IC48
4Mbit
IC8
Mask ROM Mask ROM
64Mbit 64Mbit
IC44 IC45
Mask ROM
Mask ROM
64Mbit 64Mbit
IC41 IC42
ROM
MIC
SWP30
(Slave)
IC12
SMI
DRAM
IC16
4Mbit
IC17
SIMM SIMM
Connector Connector
72pin SIMM 72pin SIMM
MAX 32MByte MAX 32MByte
(OPTION)
28CA1-8815476