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KX-FT932RU-B/KX-FT932CA-B/KX-FT932UA-B/KX-FT934RU-B/KX-FT934CA-B/KX-FT934UA-B
6.7.
NCU Section
6.7.1.
General
It is composed of bell detection circuit, pulse dial circuit, line amplifier, sidetone circuits.
6.7.2.
Bell Detection Circuit
1.
Circuit Operation
The signal waveform for each point is indicated below. The signal (low level section) input to pin 23 of ASIC IC1 on the digital
board.
TEL LINE
→
PC1 (1, 2
→
4)
→
CN1 (11)
→
{CN2 (11)
→
IC1 (23)}
Note:
{ } : inside the digital board
6.7.3.
ON/OFF Hook Circuit
Normally (ON-HOOK condition), LINE RELAY (RLY1) is OFF. While OFF-HOOK, RLY1 turns ON. This LINE RELAY is con-
trolled by pin 130 of IC1 through the Q7.
ON-HOOK:
IC1 (130) Low Level
→
Q7 OFF
→
RLY1 OFF
OFF-HOOK:
IC1 (130) High Level
→
Q7 ON
→
RLY1 ON
6.7.4.
Pulse Dial Circuit
Make state:
IC1 (130) High Level
→
Q7 ON
→
RLY1 ON
Break state:
IC1 (130) Low Level
→
Q7 OFF
→
RLY1 OFF
Содержание KX-FT932CA-B
Страница 21: ...21 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 6 4 2 Block Diagram ...
Страница 23: ...23 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B ...
Страница 67: ...67 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B ...
Страница 71: ...71 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B ...
Страница 73: ...73 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B ...
Страница 74: ...74 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B ...
Страница 104: ...104 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B I O and Pin No Diagram ...
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Страница 107: ...107 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 12 5 5 3 NG Example ...
Страница 111: ...111 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 12 5 7 2 Troubleshooting Flow Chart ...
Страница 117: ...117 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 13 Service Fixture Tools ...
Страница 127: ...127 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 14 2 8 How to Remove the Bottom Frame ...
Страница 142: ...142 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 16 1 2 Analog Board ...
Страница 147: ...147 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 16 3 2 ITU T No 2 Test Chart ...
Страница 162: ...162 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B MEMO ...
Страница 165: ...165 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 20 1 2 2 KX FT934RU UA CA ...
Страница 166: ...166 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 20 1 3 Lower Cabinet Section ...
Страница 167: ...167 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 20 1 4 Gear Block Section ...
Страница 168: ...168 KX FT932RU B KX FT932CA B KX FT932UA B KX FT934RU B KX FT934CA B KX FT934UA B 20 1 5 Screws ...