EDAN SE-601B - Main Board Description

SE-601 Series Electrocardiograph Service Manual Overview
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SE-601 series electrocardiograph consists of the following functional blocks:
1) Key board
2) Main board
3) PS900G power supply board
4) ECG board
5) Thermal printer module
6) LCD display module
7) WIFI module (optional)
8) Speaker or buzzer
3.2.1 Main Board Description
The main board includes Core CPU, SDRAM, FLASH, buffer chip, Ethernet driver chip, power
supply, printing interface, audio interface, TFT screen interface, USB interface, RS232-Serial
port, analog input and output.
CPU, SDRAM,
FLASH, CS8900,
74LVTH162245
232
Coversion
10/100M
Ethernet
Audio
Circuit
TFT LCD
Signal
Driver or
Conversion
Power
Supply
CPLD
USB
DEVICE
Interface
USB HOST
Interface
UART1
UART0
ECG
Board
Interface
UART2
Analog Signals
input/output
Key
Board
Interface
601B/C
LCD
Interface
RS232
Interface
Printer Interface
SE-601A
LCD
Interface
Speaker
Isolation
Transformer
Circuit Feedback
Detection
Analog Signals
input/output
WIFI Interface
(optional)
UART0
SPI 0
Figure 3-2 Main Board Diagram
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