Sharp ER-A411 / ER-A421 (serv.man3) Service Manual ▷ View online
ELECTRONICAL SECTION
7-1
CHAPTER 7 ELECTRICAL SECTION
1. HARDWARE SPECIFICATION OUTLINE
ER-A411
ER-A421
CPU
16bit MPU H8S/2373 (Manufacturer: RENESAS) *33MHz
Printer
Line thermal printer 384 dots/ 58mm wide x2 pcs
SRAM 8Mbit
ROM
For Program
16Mbit Flash Memory
For data
32Mbit Flash Memory
Display
Main display
STN LCD 192 x 80 dots
screen size (View Area) :101.79mm (H) x 42.00mm (V)
Customer display
STN LCD 160 x 16 dots + 7segment x 10digits
screen size (View Area) :88.50mm (H) x 26.20mm (V)
Keyboard
Normal type
Flat type
119 Keys
119 Keys
Mode S/W
N/A
Interface USB
N/A
SD 1slot
Drawer 1port
RS232
4port (D-sub x 4)
EFT N/A
Buzzer PIEZO
buzzer
Power supply
Power transformer
Battery
Memory back up
Ni-MH battery (250mAh) on board
Memory back up
Size-AA battery x 2
Drawer Standard
(SK-420)
ELECTRONICAL SECTION
7-2
2. BLOCK DIAGRAM
2-1. BLOCK DIAGRAM
ELECTRONICAL SECTION
7-3
3. HARDWARE CONFIGURATION DIAGRAM
3-1. Major components connection
ELECTRONICAL SECTION
7-4
4. SIGNAL CONNECTION DIAGRAM
Connection between the Host (PC) and the Terminal (ECR)
MEMO
If the connector of the Host PC is “9 PIN D-SUB,” the PIN number is the same as that of the ECR.
SD Transmitted
Data
RD Received
Data
DTR(ER)
Data Terminal Ready
DSR(DR)
Data Set Ready
RTS(RS)
Request To Send
DCD(CD)
Data Carrier Detector
CTS(CS)
Clear To Send
FG Frame
Ground
SD
3
RD
2
RTS
7
DCD
1
DTR
4
DSR
6
CTS
SG
5
RD
SD
RTS
DCD
DTR
DSR
CTS
SG
3
2
7
1
4
5
8
6
8
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