Fukuda Denshi FCP-7101, Service Manual

Page: 73 / 170

Chapter
5
Electric Circuit Diagrams
Overall block diagram of unit (AC adaptor not included) ................ 5-1
MAIN BOARD block diagram ..................................................... 5-3
MAIN BOARD (PCB-6950) circuit .............................................. 5-5
1.Digital logic block ................................................................. 5-5
CPU section........................................................................ 5-5
FPGA section...................................................................... 5-5
Memory section .................................................................. 5-6
KEY I/F section ................................................................... 5-8
Thermal head control section.............................................. 5-9
Real time clock ................................................................. 5-10
Reset circuit section.......................................................... 5-11
Sensor control section ...................................................... 5-12
Motor control section......................................................... 5-13
LCD voltage generating section........................................ 5-14
2.ECG AMP block ................................................................. 5-15
3.Power supply block ............................................................ 5-16
Power voltage generating section..................................... 5-17
Battery charging section ................................................... 5-20
Power control section........................................................ 5-21
KEY BOARD (PCB-6949) circuit .............................................. 5-22
SENSOR BOARD (PCB-6948) circuit ...................................... 5-23
MAG UP BOARD (PCB-6951) circuit ....................................... 5-23
AC adaptor block diagram................................................................ 5-24
MAIN BOARD Circuit Diagrams (PCB-6950) ................................... 5-25
Power connection table No.1.................................................... 5-25
Power connection table No.2.................................................... 5-26
POWER /CAPACITOR/REST IC/CLOCK
LCD POWER block .................................................................. 5-27
CPU block ................................................................................ 5-28
FPGA block .............................................................................. 5-29
MEMORY block ........................................................................ 5-30
LAN CONTROL block............................................................... 5-31
LCD I/F / RTC / LED block ....................................................... 5-32
THERMAL I/F block.................................................................. 5-33