Korg PA3X Service Manual page 16

DISPLAY FRAME
GRA0002170
12 switches
&
4 LEDs
DISPLAY
FRAME
CONTROL
DISPLAY LOGIC
INTERFACE
GRA0002171
RST
+3.3V
TFT BACKLIGHT
TFT BUS
T.P.
+15VSW
USB
USBD
DEV. BUS
LED
DRIVER PHY.
TFT
32.768KHz
Colpitts 16MHz
Oscillator
OPTION
IC3
+5V
SCL
+3.3V
VIDEO BOARD SDA
+3.3V
PANEL_RES
REG
GRA0002106
MX1_WCLK
IC6 MX1_BCLK
VIDEO OUT MX1_REC
RST RST
MX1_PLAY
IC5 MP3_SAMPLING
CVBSO
SDA
SAA7105
CN4
SCL
XTI
IC4
+3.3V
+1.2V
REG
IC2
MA0:15
IC1
CTRLs
FPGA LFEC1
DM0:16
CN2
SDA
XT1 SCL
IC8
VIDEO FPGA PRG
SPI1 IN/OUT
OSC.
+5V
27MHz +5V
74LV
1G18
KEYB IF BOARD
GRA0002183
IC5
IC4 J1
RST
+5V
+5V
RST
KEYB IN/OUT
TX/RX
NKS3
A.T. ADJ
AN2
MUTE3V
MK/BR P60:67 ASS. PED.
IC6
MIC_SENSE
IC1-2
DAMPER
A.T. PHANTOM_EN
2X 3 TO 8 CY8C27443
BUFF. AUDIO_RST
DECODER
HP_INSERT
EC5
CN1
CN3 CN4
KEYB KEYB
A.T.
RST_MBOARD
MIDI IN
LOWER UPPER
OPTO
INS.
MIDI OUT
24MHz
MIDI THRU
MIDI3
O.C.
+5V
+5V
PROT
USB REAR
D+/D-
O.C. +5V
+5V
PROT
D+/D-
D+/D-
RST
+5V
CON2
CON1
FRONT USB BOARD
OPTION
GRA0002185
DEFAULT
or
USB PEN BOARD
HDD
GRA0002177
-12V
64 Mbit 64 Mbit
SDRAM SDRAM +12V
+5V
REG
+5VA
LIN
AD08:23 AD00:07
+3.3V
A00:22
1.8V
LATCH +1.8V
LIN REG
TC_SWITCH_OFF
2x 1.2V
+1.2V
DC/DC
TC_RESET
+1.2V REG
GP_NCS TC_SI
DSP56724
GP_CLK TC_SO
+5V
GP_MOSI I2S_CLKs
GP_MISO
MAXX_LR_SO
TC_SPDIF_OUT
Boot selection: 24.576 MHz
OSC.
MODE0=4 - MODE1=0
64Mbit
FX
SDRAM
TC_SWITCH_OFF
DD00:31
CS4 CS
CDACK CTRL+CS0:3
CS5
CA15
CD16:31
MD0:31 D0:15
MA0:21
CA1:21
SDRAM
A0:13
CTRL A00:14
MX1
TG01
2X256Mbit
SDRAM
TG01_RESET
EB0,OE,
RW
CDREQ
MEM0_0:1
DREQ
TIMING
ADAPTER
RESET SIGNALS
MUTE3V
MX1_WCLK
MX1_BCLK
DSP
MX1_REC
TMS320 MX1_PLAY
MP3_SAMPLING
DISPLAY
256Mbit
FRAME
CONTROL
SDRAM
SCL
SDA
RP
USB_CS
RST
CS0
SCL
ISP1761
MD16:31 SDA
WE
MA1:17
AUDIO_RST
16Mbit
MD16:31
NOR
MA1:20
TC_SPDIF_OUT
XT1 CN3
12 MHz
CN1
HDD
IF
OXU931S
+5V
IC2
IC4
+3.3V
REG
USB TO SATA BOARD
GRA1002157
+15V +15V
-12V -15V +15V
DC/DC
REG
LIN REG +15VSW
+VBAT +VBAT
+12V
REG
LIN
+15V
3.3V & 5V
SOFT_POWER_OUT
DC/DC
+15VAMP
REG
SPKR_BOX
CHARGE_STATE
SOFT_POWER_IN
SOFT_POWER_OUT
SPKR_ON
+15V +VBAT
+3.3VMEM
DC-DC
+3.3V
SDRAM
CKE
ADAPTER
J1
VR1-5
CS0 CS1 CS2
CS3
S
O
D
SOUND CONTROL BOARD
I
GRA0002172
M
3 switches & 3 LEDs
M
GRA1002101
MEM0_0:1
S/PDIF
S/PDIF
TRANSFORMER
MAIN BOARD
GRA0002165
+3.3V
SOFT_POWER_OUT
SOFT_POWER_IN
CHARGE_STATE
SDA
SCL
+5V
MUTE
TRANSLATOR
+12V +12V
-12V -12V
MIC_SENSE
MIC SENSE
Mic/IN SEL
DO
BALANCED BALANCED
CLKs
A/D LP L/R IN
AIN L/R IN
FILTER
PCM4202
RST
+15V
HP_INSERT
DI1
LP
CLKs 1/2 OUT
A1OUT
FILTER
AUDIO_RST
RST
D/A
PHANTOM_EN
PHANTOM_EN
PCM4104
L/R
LP
DI0
A0OUT LEVEL
FILTER TRASLATOR
DI
IN_ROUTING_SEL
CLKs
DO
MX
5010B
RST
OUTPUT BOARD
GRA1002132
S/PDIF PaAS
TRANSFORMER
AUDIO
PaAS
POWER
(from Control Board)
PaAS
CONNECTION BOARD
GRA0002174
CONTROL BOARD
GRA0002166
SMPS
+15V
+15V +15VAMP
RPS-75-15
+15V 5A
SPKR_ON
+15V
+VBAT
Step
down
converter
PWMB
Power stage
PWMM
V
SEL P/I
S
overcurrent protection P/I
E
I
L
T
POWER_GOOD
XRES
NiMH battery pack
SCL
7.2 V - 2100 mAh
SDA
LEFT PANEL BOARD
PWR EN
GRA0002167
RTC
CR2032
CY8C24423
DEMUX
+3.3V
32.768KHz
XRES
SCL
SDA
2X 3 TO 8
DECODER
RST_RIBBON
SW AND LEDs
MATRIX
RIGHT PANEL BOARD
GRA0002168
STANDBY AND
BATTERY STATUS
CY8C24423
+3.3V
XRES
SCL
SDA
2X 3 TO 8
DECODER
+3.3V
SOFT_POWER_IN
CHARGE_STATE SW AND LEDs MATRIX
+5V
JACK8
SWB
MIC
SWC
LEVEL IC1
IN
TRASLATOR Q1
Q15
PRE
AMP
GAIN
VR1
PHANTOM
JACK4
1/2 OUT
POWER
JACK5
IC7, IC7
OUTPT
BUFFERS
AND
MUTE
L/R IN JACK6
JACK7
L
IC4
SWA
INPUT
R
BUFFERS
Q22
Q26
JACK2
L/R OUT
JACK3
IC8, IC9
OUTPT
IC13
BUFFERS
+
AND
MUTE
IC10
HEADPHONES
AMP.
JACK1
HP BOARD
J1
GRA0002138
MAIN FILTER BOARD
GRA0002134
MAIN
SW
RIBBON CONTROL BOARD
GRA0002169
14 elements PCB sensor array
+3.3V +3.3V
CY8C20334
RST_RIBBON
TX TX
SCL SCL
SDA SDA
Pa3X 61-keys BLOCK DIAGRAM
Authors: M. Palombini - M. Caldari
Version: 3.0
Date: 27 April 2011