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Electric Circuit Diagrams
4 - 1
Overall block diagram of unit
The FX-7202 circuitry can roughly be divided into 5 functions below.
1.MAIN BOARD(PCB-6868)
2.ECG AMP BOARD(PCB-6867)
3.OPERATION BOARD(PCB-6866)
4.POWER BOARD(PCB-6863)
6.CARTRIDGE BOARD(PCB-6818) [option]
The electrocardiographic signal input through the patient connector is boosted and is
AD-converted by the ECG AMP BOARD and then, by the MAIN BOARD, an
electrocardiogram is displayed and recorded, arrhythmia examination, R-R interval and
various other treatments, measurements and analyses are performed.
On the POWER BOARD, power supplied from the AC power supply is changed into
voltages (3.3 V, 5 V, 12 V, +5 VBAT) necessitated by other circuits and supplied to them.
+24 V is supplied to the thermal head and motor driver.
The OPERATION BOARD transfers LCD signal from the MAIN BOARD, and controls
the operation panel and TOUCH PANEL.
AMP
CONTROL
G/A
PHOTO
COUPLER
ISOLATION
POWER
TxD
RxD
20bits
⊿Σ ADC
ANALOG
INPUT
12bits
ADC
LAN
RJ-45
ISOLATION
+5VD
+5VA
100KHz
VOLTAGE
REFERENCE
+2.5V
AMP/LAN I/F BOARD
MAIN BOARD
P2
MAIN G/A
MAIN CPU
P3
SDRAM
FLASH
ROM
ETHERNET
CNTR
LCD
CNTR
CFL
TOUCH
PANEL
I/F
OPRATION PCB
POWER
ON/OFF
KEY_SC
KEY_DT
Main
Power
Charge
Error
TOUCH PANEL
320 x 240
MONO STN LCD
74HCT541
LCD
CONTRAST
THERMAL HEAD(110mm)
P6
STEPING
MOTOR
RECORDER
SENSOR
P9
+24V
+3.3V
P7
P1
POWER UNIT
POWER
SIGNAL
P8
P5
JTAG
CARTRIGE
+5V
+15V
RECORDER BLOCK
BUZZER
RTC
Li Battery
(CR-2032)
MOTOR
DRV
+24V(for ThermalHead)
+24V
(for MotorDrive)
Summary of Contents for CARDIMAX FX-7202
Page 10: ...viii ...
Page 12: ......
Page 18: ...Chapter 1 1 6 ...
Page 48: ......
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Page 108: ......
Page 124: ......
Page 125: ...6 1 MAIN BOARD PCB 6868B component side ...
Page 126: ...6 2 MAIN BOARD PCB 6868B soldering side ...
Page 127: ...6 3 ECG AMP BOARD PCB 6867A component side ...
Page 128: ...6 4 ECG AMP BOARD PCB 6867A soldering side ...
Page 129: ...6 5 OPERATION BOARD PCB 6866C component side ...
Page 130: ...6 6 OPERATION BOARD PCB 6866C soldering side ...
Page 131: ...6 7 POWER1 BOARD PCB 6863B component side ...
Page 132: ...6 8 POWER1 BOARD PCB 6863B soldering side ...
Page 133: ...6 9 POWER2 BOARD PCB 6864B component side ...
Page 134: ...6 10 POWER2 BOARD PCB 6864B soldering side ...
Page 135: ...6 11 MARK SENSER BOARD PCB 6865 component side ...
Page 136: ...6 12 MAGAZIN SW BOARD PCB 6862 component side ...
Page 138: ......
Page 143: ...7 5 External view of recorder ...
Page 152: ......
Page 158: ...Chapter 8 8 6 ...
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