30
KX-NCP500GR
4.6.4.
Alarm Signal Transmission Section
Part 4 contains a description of the circuit that transmits AC and DC alarm signals.
1. Alarm Circuit Power Source
Consisting primarily of Q501 and D502, the alarm circuit power source stabilizes 41V output voltage described in Part 2 to
approximately 27V.
2. AC Alarm Signal Transmission Section
If AC input is detected by the AC voltage detection circuit described in Part 1 (5), Q801 is turned on by secondary side transis-
tor of PC80 being turned on, and a low signal is transmitted to AC alarm output.
On the contrary, if AC input is not detected, Q801 is turned off by secondary side transistor of PC80 being turned on, and
"open" (open collector output) is transmitted to AC alarm output.
3. DC Alarm Signal Transmission Section
If 15VPT/41V output is output normally, and output voltage detection transistor Q551/Q550 is on, Q901 is turned on and a DC
alarm output low signal is transmitted.
If either 15VPT or 41V output is abnormal, Q901 is turned off by transistor Q551/Q550 being off, and DC alarm output "open"
(open collector output) is transmitted.
Содержание KX-NCP1000GR
Страница 9: ...9 KX NCP500GR ...
Страница 12: ...12 KX NCP500GR 4 2 Power Supply Block Diagram ...
Страница 20: ...20 KX NCP500GR 4 5 5 System Control 4 5 5 1 System Control Block Diagram ...
Страница 21: ...21 KX NCP500GR 4 5 5 2 Voice TDM Highway Bus Block Diagram ...
Страница 23: ...23 KX NCP500GR 4 5 6 Back Board Signal Connection Diagram 4 5 6 1 CT Bus System Connection Diagram ...
Страница 24: ...24 KX NCP500GR 4 5 6 2 EC Bus System Connection Diagram ...
Страница 32: ...32 KX NCP500GR 5 Location of Controls and Components 5 1 Name and Locations ...
Страница 36: ...36 KX NCP500GR ...
Страница 53: ...53 KX NCP500GR 9 Troubleshooting Guide 9 1 IPCMPR Card 9 1 1 Startup ...
Страница 54: ...54 KX NCP500GR ...
Страница 55: ...55 KX NCP500GR ...
Страница 56: ...56 KX NCP500GR ...
Страница 57: ...57 KX NCP500GR 9 1 1 1 Main alarm light turns on ...
Страница 58: ...58 KX NCP500GR 9 1 1 2 SD card access light does not flash ...
Страница 60: ...60 KX NCP500GR ...
Страница 61: ...61 KX NCP500GR 9 1 1 6 Option card cannot start up ...
Страница 62: ...62 KX NCP500GR 9 1 2 Phone Call 9 1 2 1 The path cannot connect ...
Страница 63: ...63 KX NCP500GR 9 1 2 2 Noise is created ...
Страница 64: ...64 KX NCP500GR 9 1 3 Paging 9 1 3 1 Noise is created ...
Страница 65: ...65 KX NCP500GR ...
Страница 66: ...66 KX NCP500GR 9 1 4 Using MOH ...
Страница 67: ...67 KX NCP500GR ...
Страница 68: ...68 KX NCP500GR 9 1 5 LAN 9 1 5 1 LAN Connection ...
Страница 69: ...69 KX NCP500GR 9 1 6 ESVM 9 1 6 1 ESVM function record play ...
Страница 70: ...70 KX NCP500GR ...
Страница 71: ...71 KX NCP500GR 9 1 7 RS 232C 9 1 7 1 RS 232C Connection ...
Страница 72: ...72 KX NCP500GR 9 1 8 SD card IF ...
Страница 73: ...73 KX NCP500GR 9 1 9 Other ...
Страница 75: ...75 KX NCP500GR 9 2 1 1 Defective parts list ...
Страница 77: ...77 KX NCP500GR 9 2 3 15VPT 41V output voltage not output 15V only output 9 2 3 1 Defective parts list ...
Страница 78: ...78 KX NCP500GR 9 2 4 15VPT output voltage only not output 9 2 4 1 Defective parts list ...
Страница 79: ...79 KX NCP500GR 9 2 5 41V output voltage only not output 9 2 5 1 Defective parts list ...
Страница 80: ...80 KX NCP500GR 10 Service Fixture Tools 10 1 Extension Boards for Servicing ...
Страница 86: ...86 KX NCP500GR 12 2 Terminal Guide of the ICs Transistors and Diodes 12 2 1 IPCMPR Card 12 2 2 LED Board ...
Страница 87: ...87 KX NCP500GR 12 2 3 Power Supply Board ...
Страница 129: ...129 KX NCP500GR Waveform 7 Waveform 8 Waveform 9 159 984MHz 13 824MHz 16 384MHz ...
Страница 145: ...145 KX NCP500GR 16 2 Cabinet and Electrical Parts Location ...
Страница 146: ...146 KX NCP500GR 16 3 Accessories and Packing Material ...