Sony CNU-500 Maintenance Manual page 49

DATA BUS D0-D7
ADRRESS BUS
CONTROL BUS CONTROL BUS
S1
POWER
AC IN
CNU-500
IC3
IC2 IC8
RESET
MODE
VECTOR/
INT
AD0-AD31
SELECTOR
CPU
AD0-
A0-A3
AD31
IC13-IC16
AD0- DATA
AD31
BUFF
DATA BUS
ADDRESS BUS
IC4,IC5
A2-A19 EPROM
D0-D31 A2-A18
MRW150
F1
+5V
+5V
+12V
SWITCHING
+12V
REGULATOR
-12V
-12V
RCP POWER
LE-139
OVERALL OVERALL
IC17-IC20
IC25 IC33,IC37
ADDRESS
SEPARATOR
A4-A31
A20-A31
READ/
ADDRESS
WRITE
DECODER
CONTROL
DATA BUS
ADDRESS BUS
CONTROL BUS
IC9-IC12
SRAM D0-D7
IC35,IC38
IM-BIT
DRAM
IC46
IC44
V
RESET
GEN
SYNC
IC49 IC50
SEP
CP1,CP2
H
RESET
PLL VCO
GEN
CN-1259(2/2)
REFERENCE
5-3 5-3
IC45
PIO
A2,A3
IC42
D0-D7
GRAPHIC
A2-A4
CONTROLLER
CHARACTER
OVERALL BLOCK
CNU-500 OVERALL#2/M
CNU-500