Sony DNW-A75 Maintenance Manual page 240

OVERALL (2/3)
Block Diagram
IC1408-1412
CN1101 50P
IC1110,1111
RS-232C
RECEIVER
D-SUB 9P
(ISR)
IC1112
IC1113
IC1114
INT
PIO,INT,
SIO,CTC,
PIO FRAME GEN.
X1100
4.91 MHz
OSC
RECEIVER
(SS-83)
BT710
BATTERY
AND
CRYSTAL
DATA BUS
DATA
IC719,721-723
DATA
IC711,713
DATA
IC705-708
SYS1 CPU
40 MHz
CLOCK
IC712,Q701
POWER ON
RESET
C-10
BUS
BUFFER
RS-232C
DRIVER/
SW
IC1107
ADDRESS
DECODE
CONTROL
PANEL
IC1102
D-SUB 29P
SIO
REMOTE1
LINE
DRIVER/ IN
IC1103
D-SUB 9P
IC1104
IC1105
OUT
D-SUB 9P
IC710
NV-RAM
(RTC)
IC1300,1302-1308
SUPERIMPOSE
CHARACTER
IC709 CONTROL
CHARA SIG
DATA
BUFFER
IC1401
MPU CONTROL
RAM ADDRESS INTERFACE,
AND PIO
SY1
ADDRESS
ROM RAM
IC1400
ADDRESS
ADDRESS
LATCH
FL
IC704
LEVEL METER
RESET
VIDEO CONTROL
L:RESET
D-SUB 15P
KY-438
IC104
IC102
LINE
RECEIVER/
TRANSCEIVER
MPU
X100
4.9152 MHz
OSC
IC103
DIAL I/F
LOWER CONTROL PANEL
RM-190(RM-130 + RM-179)
IC11 IC1
VPR-47 NV-RAM MPU
(EEPROM) (PIO)
SDI-41
(RM-179,IC1) (RM-130,IC2)
SIF1(SCK,CMD,RES,RDY,CS)
FP-117
FRONT PANEL CONTROL
IC6 IC1
PULSE
WIDTH
COUNTER
X1
MPU
9.83 MHz
OSC
RV1-7
VIDEO
CONTROL
(REMOTE)
SWC-31
RV101-107 IC105,106
7
7
VIDEO LOCAL/
ANALOG/PWM
CONTROL 7 REMOTE
CONVERT
(LOCAL) SW
SUB CONTROL PANEL
SS-83(1/2)
IC200 DP200
VFD VFD DISPLAY
6
DRIVE
S100-147
LOWER PANEL
KEY/LED
8 MATRIX
IC101
DIAL SOL.
DRIVE
PTC-69/101
PM005
DIAL SOL.
JOG/
SEARCH
DIAL
DIAL SENSORS
REMOTE2
IC3-9
PARALLELE
DRIVER
/BUFFER
D-SUB 50P
(RM-130,IC4-10)
IC4,5
VR-223
AUDIO REC LEVEL VR
VIDEO LEVEL VR
ANALOG/PWM
CONVERT
VR-224
AUDIO PB LEVEL VR
SWC-35
S201-225
KEY/LED
MATRIX
UPPER CONTROL
PANEL
S101-113
KEY
MATRIX
DNW-A75/A75P