Block Diagram - Yamaha PSR-S750 Service Manual

H G
■ PSR-S950 BLOCK DIAGRAM
1
CN300 CN301
(3P) (4P)
VR300 VR301
PITCH BEND
MODULATION
PB MOD
LED BACKLIGHT
2
LCD
5.7 inch TFT QVGA
CN904
(4P)
DM
IC3 (14P)
3
IC13
(20P)
IC26 (5P)
AUXIN_IN
NTSC//PAL
IC204–207 (54P)
4
IC209 (54P)
IC613 (54P)
IC604 (8P)
IC603 (5P)
IC902 (29P)
5
IC619 (5P)
IC620 (5P)
IC208 (5P)
IC804 (5P)
6
F
PNL
PNC
SW & LED SW & LED
PB MATRIX MATRIX
MOD
CN3
(7P)
CN1 CN4
(29P) (16P)
CN3
(29P)
PNM
CN4 CN7
(29P) (29P)
SW & LED
MATRIX
POWER SWITCH (SOFT SW)
SW1
+5D
MASTER internal oscillator
10MHz
VOL
VOLUME AIN*
/SPSI
E-PNS3a
VR2
/PEDAL_IN1
AIN*
IC1 (80P)
/PEDAL_IN2
AIN*
PEDAL 1
AIN*
PB AIN*
PEDAL 2
AIN*
MOD AIN*
CN2
(8P)
CN1 (9P)
CN601
CN401
(7P)
(33P)
IC202 (48P) IC16 (56P)
IC23 (56P)
X4
X1
IC6–9,11,12 (20P)
IC10 (16P)
IC1
RESETP
PTJ6 SSP-ROM-/RES
IC610 (48P)
ICN
ECSN
IC21 (5P)
WAITN
ADAT15
SSP-TXD
IC25
SSP-RXD IC607
(5P)
SSP-DATA (324P)
SDI0
IC19
SWP-DATA
(5P)
256FS
ESDA,ESCL
DAC_IC
WAIT0
EICN IC601
PV
(388P)
IC24 (4P)
AUXADC-DATA
ICN
X601
DAC-DATA
IC18 (16P)
IC17 (14P)
IC602,606 (56P)
TWAMP-DATA
IC4
(5P)
IC904 (25P)
IC27
WFAMP-DATA
(5P)
E D
61 KEYS 16M KEYBOARD
PNR
SW & LED
MATRIX
MK-L
CN11
(C1~A3)
(14P)
CN6 CN8 CN2
CN4
(16P)
(14P) (12P) (7P)
PNS
+5D
EMKS61A
SW & LED
MATRIX
E-LKS 8.38MHz
IC1 (64P)
ROTARY ENCODER
EC1
CN1
(7P)
CN602
(7P)
NTSC//PAL
IC412 (50P)
IC411 (24P)
X405
X407
IC407 (176P) X406
IC609 (50P)
X408
IC406 (80P) IC410 (5P)
MICADC-DATA
IC806 (8P)
IC803 (16P)
IC805 (8P)
IC802 (16P)
IC801 (28P)
IC807 (8P)
IC5 (14P)
PV
IC900 (33P)
PV
IC901 (33P)
C B
MK-H
(A#3~C6)
AJACK
CN3
(5P)
IC1 (3P)
+12A REGULATOR
+16V
/SPSI
X1
/PSWI
PV
PSWO
/SPSI
/PEDAL_IN1
/PEDAL_IN2
PEDAL 1
PEDAL 2
CN9
(8P)
/PSWI /PSWI
PSWO PSWO
/MUTE /MUTE
HP_IN HP_IN
AUXIN_IN AUXIN_IN
CN3 CN1
(6P) (6P)
PV PV
16V 16V
CN901 CN4
(6P) (6P)
CN3
(3P)
VIDEO OUT
MIC_IN
IC3 (8P)
JK402
USB TO HOST
CN402
IC6 (8P)
USB TO DEVICE
CN403
AUXIN_IN
MIDI IN
JK2
IC5 (8P)
MIDI OUT
JK1
HP_IN
RY1
CN802
(3P)
IC7 (8P) RELAY
CN10
MIC_IN
(5P)
12A
CN2
(11P)
MUTE
CIRCUIT
/MUTE
CN801
(11P) TR2,4,7
CN902
(5P)
CN903
(4P)
28CA1-2001092386-1
1
■ PSR-S950 BLOCK DIAGRAM
A
PSR-S750/PSR-S950
TH1
ErP
DC IN 16V
CIRCUIT
PA-300C
JK1
FET1, TR1
/PEDAL_IN1
FOOT PEDAL 1
PEDAL 1
JK3
/PEDAL_IN2
FOOT PEDAL 2
PEDAL 2
JK4
MIC/LINE
SW100
INPUT VOLUME
VR1
MIC /LINE IN
JK2
AUX IN
JK5
L/L+R
JK7
TR9
OUTPUT
R
JK8
TR8
HP
PHONES
JK200
CN200
(5P)
R ch
L ch
TWEETER
WOOFER