![Fukuda Denshi DS-8400 Service Manual Download Page 109](http://html.mh-extra.com/html/fukuda-denshi/ds-8400/ds-8400_service-manual_2344852109.webp)
4-35
Circuit Description of Capacitor Board (PCB-7707)
Capacitor board has the electrolytic condenser to keep the machine operations on the interruption of
commercial AC power supply. It is connected to the power board.
●
Internal connector
Power Supply Connector (CN1)
No.
Signal Name
Remarks
Signal Level
1 18V
Power
supply
I/O
2 GND
GND
Circuit Description of Main Joint Board (PCB-7709)
Main joint board receives the power from the power board, video signal from main board, speaker output,
serial communication signal, and control signal. Then it relays to connector which fits the display unit.
Moreover, it monitors the power voltage and current to be supplied to the display unit.
●
Internal connector
Power Supply Input Connector (CN1)
No.
Signal Name
Remarks
Signal Level
1 18V
Power Supply Input
2 18V
Power Supply Input
3 GND
4 GND
Power Relay Connector (CN2)
No.
Signal Name
Remarks
Signal Level
1 18V
Power relay output
2 18V
Power relay output
3 GND
4 GND
Speaker Connector (CN5)
No.
Signal Name
Remarks
Signal Level
1 SP+
Speaker
2 SP-
Speaker
output-
Summary of Contents for DS-8400
Page 4: ......
Page 36: ...xxxii ...
Page 46: ...1 6 ...
Page 74: ...3 4 ...
Page 117: ...5 1 Wiring Diagram Chapter 5 Main Unit DSC 8400 5 2 ...
Page 120: ...5 4 ...
Page 128: ...6 8 ...
Page 130: ...7 2 DSC 8410 CPU Unit BLK ...
Page 132: ...7 4 DSC 8410 Power Supply Unit BLK ...
Page 135: ...7 7 DSC 8410 Assembly 1 Front Case Part ...
Page 137: ...7 9 DSC 8410 Assembly 2 CPU Unit Part ...
Page 139: ...7 11 DSC 8410 Assembly 3 Joint Part Expansion Module Part ...
Page 141: ...7 13 DSC 8410 Assembly 4 COM AUX Part Recorder Part ...
Page 143: ...7 15 DSC 8410 Assembly 5 Power Board Part Power Supply Unit Part ...
Page 145: ...7 17 DSC 8410 Assembly 6 Rear Case Sheet Metal Part Item number ...
Page 147: ...7 19 DSC 8410 Assembly 7 Rear Case Part Item number Connector position ...
Page 149: ...7 21 DSC 8410 Assembly 8 Front Rear Stand Part ...
Page 152: ...7 24 DSC 8410 Assembly 10 Super Unit Cover Assembly ...
Page 154: ...7 26 DSC 8410 Assembly 11 Super Unit Part Blank Cover Recorder Part Blank ...
Page 156: ...7 28 DSC 8410 Assembly 12 Labeling ...
Page 168: ...8 6 ...
Page 222: ...9 54 ...
Page 258: ...10 36 ...
Page 272: ...11 14 ...