Block Diagram - Sam4s ER-350 II SERIES Service Manual

9 Block Diagram

PWR SW B'D
AC120V / 60HZ
AC230V / 50HZ
SAM4S ER-350II SERIES
REAR VFD B'D
FRONT VFD B'D
IN
230V/50HZ
120V/60HZ
POWER
TRANS
+5V
22V/2.3A
26V/0.08A
OUT
MAIN B'D
+30V(VDI) +24V(VPRT) +5V(VCC)
RECTIFIER
RECTIFIER REGULATOR
FUSE
250V/3.15A
nRESET
+5V
RESET IC
M51953B
+24V
+
IRQ PFAIL
-
+24V +5V
PFAIL
THERMAL SENSOR
COMPARATOR
HOME SENSOR
BLACKMARK L/R
STEP MOTOR
CR / LF MOTOR
DRIVER
HEAD(DOT)
HEAD(9:1)
CNTL&DRIVER
DOT TRIG
BUZZER
OSC(2KHZ)
DRIVER
DWR#1
DRAWER
DRW#1
COMP COMP
COMP SENS
DATA(7:0)
FISCAL
CS FISCAL
CONTROL CIRCUIT
FISCAL B'D I/F
FISCAL B'D
MEM SIZE MAX 2MBIT
SCLK / SDA / LAT&STB
+30V
UCN5812
VFD
VCC
+3.6V(VBAT)
BATTERY
+5V
RESET
nINT2
GPIO
GPIO
GPIO
CPU
W78C438-40
GPIO
GPIO
GPIO
nCS_RAM#1
nCS_RAM#2
GPIO
GPIO
GPIO
GPIO GPIO XIN XOUT KEY SCAN KEY RET
DECODER
36.864MHZ
74HC138
nRD
nWR
KEY SCAN RETURN
KEY BOARD
MAX 96KEY
2 LINE LCD
+5V
VF
L C D
+30V +5V
RXD/TXD/DTR/DSR
UART
D(7:0) DATA(7:0)
A(15:0) ADD(15:0)
GPIO RAM ADD(18:16)
GPIO ROM ADD(17:16)
EPROM SRAM#1
(BOOT)
M27C1001 K6T1008
(1MBIT) (1MBIT)
nOE nCS
PSEN
nRD
nWR
SRAM#1
SRAM#2
DECODER
VBAT
74HC138
MEM CE
GPIO
SCLK
RTC IC
GPIO
SDA
GPIO 32.768KHZ
RS5C372A
MODEKEY
MODE
KEY
SERIAL#1
+5V
DATA(7:0)
ADD(15:0)
VBAT
SRAM#2
(OPTION)
K6T4008
(4MBIT)
nCS
nRD
nWR
9-1