Yamaha PortaTone PSR-2000 Manual de servicio - Página 14
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A
B
PSR-1000 BLOCK DIAGRAM
1
PITCH BEND
CN16
VR3
PB2
2
3
CN300
/PEDALIN
FOOT PEDAL1
(SWITCH)
JK304
JK303
FOOT PEDAL2
SW300
MIDIOUT
MIDIIN
4
1M CLK
HOST SELECT
PC/MAC
MIDI/PC2
PC1/MAC
JK301
MIDI IN
MIDI
I/F
JK300
5
MIDI OUT
JK302
Line
TO HOST
13,14
Transceiver
3
IC307
VR300
LCD
CN303
CONTRAST
6
7
STAND-BY
DC-IN
Line
Filter
16V
CN105
CN104
JK100
8
PSR-1000
9
A
B
C
D
E
CN10 (PN3)
ENC
Panel SW Matrix
Panel LED Matrix
DATA ENTRY
CN13
LD[0..7]
CN2
CN1
LSEG[0..11]
PN1
CN4
(PN1)
CN2 (PN1)
(PN1)
CN100
CN600
CN600
5V 3.3V
3 to 8
Tr Array
Buffer
Dec.
IC103,104
IC600
IC601
BRI_F
103,104
207
DA0
P-BEND
206
/RAS,/CAS
AN6
106,108
CKIO,CKE
162,105
CN109
SUSTAIN
200
DQMUU,DQMUL,DQMLU,DQMLL
AN1
89-92
CPU
RD/WR
93
FOOTVOL
199
SH3
/SDRAMCS,/PROGCS,/STYLECS
AN0
96,98,99
166
/MUTE
116
172
/DACK
169
114
203
D[0..31]
AN4
IC100
IC001
+5D
/IC
A[0..22]
RESET
193
101
/8BITCS
5
4
4.2V/50msec
102
/16BITCS
CLOCK
15
3
10.00MHz
Dec
X101
5V 3.3V
3.3V 5V
IC308
Buffer
Buffer
12
IC911
IC301
1
MASK
CN102
64M
CN501
IC803
CN1
CLOCK
15,16
WAVE
CPU
5.00MHz
IC1
CL1
MKS5F
CN2-4
MK-H
,
MK-L
Keyboard
CN106
IC101
+B
+12A
12V
CN103
3
1
REG.
CN105
CN104
AM
1/2
SW
C
D
E
F
G
,
PN2
,
PN3
,
PN4
IC913
3
Ripple
+
1
Filter
-
Circuit
2
MASK
SDRAM
32Mx2
MASK
64M
64M
18,19
IC205
IC207
67,68
IC200
/RD
RD/WR
59,28,
17
Program
14
71,16
/SDRAMCS
/PROGCS
20
12
IC206
Style/Para
IC302,
IC304,
303
305,
DataBus
1
2,3
306
Buffer
AddrBus
(3.3V 5V)
Dec
5D[0..15]
Buffer
IC308
(3.3V 5V)
5A[0..19]
5
6
CLOCK
33.8688MHz
X800
SMA[0..21]
/TGCS
2
150
SMD[0..15]
/5RD,/5WE1
152,151
/5TGIC
1
SWX00B
/SOE
41
IC801
/SCS0
74
16 30 15
DRAM
4M
IC800
+5A
18,28
CN908
CN103
CN100
2,25-27
/5LSIIC
24
VOL
DAC
12,13,
VR100
IC700
CN102
16,17
+5D
1
2
1
3
3.3V
DC-DC
+3.3D
REG.
CN105
+12A
IC114
IC111
/MUTE
MUTE
3
5V
1
+5A
REG.
TR702
CN908
IC112
F
G
H
I
INV
Back Light
CN2
DC-AC
INV.
320x240
CN1
CN104
CN500
/VWR
27
7
/VCE
FLASH
20
8
8M
SRAM
VA[0..14]
256K
IC204
/RD
/5RD,/5WE
14
28,11
VD[0..7]
/STYLECS
/5DATACS
IC501
12
26
Data storage
fc = 6kHz
-12dB/Oct
4,6
2,8
HPF
+12V
IC107,108
Buffer x2
CN100
0dB
4,6
2,8
13
4,6
2,8
EQ
LPF
IC102
CN102
IC104,105
fc = 6kHz
VR
-12dB/Oct
TR100,101,400,401
CN908
CN103
DM
ATT
H
I
J
K
L
PSR-1000
LCD
FDD
module
+5D
CN300
CN103
CONTRAST
1
/5IRQF
21
8.00MHz
/5DREQ
20
LCDC
FDC
/LP-IRQ
/DACK
37
7
/5WE
/5WE
14
5
IC500
IC300
/5RD
15
/5RD
4
/LCDCS
19
/FDCS
6
CLOCK
16.00MHz
X300
+12A
IC111
JK104
TR103,105
2
4,6
AUX OUT
8
+12A
JK102
2
4,6
OUTPUT
8
IC112
TR104,106
+B
4 IC113
CN109
1
Tweeter
8,10
ATT
3
L & R
+B
11,18
CN110
15,17
2,7
Woofer
ATT
12,14
L & R
5
IC110
MUTE
Circuit
AM
2/2
CN111
+12A
IC114
2
3
6,7
PHONES
1
JK105
CN108
HP
28CA1-8820767
PSR-1000
J
K
L
1
2
2
4
5
6
7
8
9