Panasonic KX-FT982RU / KX-FT984RU / KX-FT988RU Service Manual ▷ View online
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KX-FT982RU-B / KX-FT982RU-W / KX-FT984RU-B / KX-FT988RU-B / KX-FT988RU-W
12.5.6.2. NG Example
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KX-FT982RU-B / KX-FT982RU-W / KX-FT984RU-B / KX-FT988RU-B / KX-FT988RU-W
12.5.7. Analog Board Section
This chapter provides the testing procedures required for the analog parts. A signal route to be tested is determined depending
upon purposes. For example, the handset TX route begins at the handset microphone and the signal is output to the telephone
line. The signal mainly flowing on this route is analog. You can trace the signal with an oscilloscope. The signal flow on each
route is shown in the Check Sheet here. If you find a specific problem in the unit, for example if you cannot communicate with
the MONITOR, trace that signal route locally with the following Check Sheet and locate the faulty point.
upon purposes. For example, the handset TX route begins at the handset microphone and the signal is output to the telephone
line. The signal mainly flowing on this route is analog. You can trace the signal with an oscilloscope. The signal flow on each
route is shown in the Check Sheet here. If you find a specific problem in the unit, for example if you cannot communicate with
the MONITOR, trace that signal route locally with the following Check Sheet and locate the faulty point.
12.5.7.1. Check Sheet for Signal Route
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KX-FT982RU-B / KX-FT982RU-W / KX-FT984RU-B / KX-FT988RU-B / KX-FT988RU-W
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KX-FT982RU-B / KX-FT982RU-W / KX-FT984RU-B / KX-FT988RU-B / KX-FT988RU-W
12.5.7.2. Defective ITS (Integrated Telephone System) Section
1. No handset and monitor transmission / reception
Following the ITS section or NCU section, search for the route between the microphone and the telephone line (sending) or
between the telephone line and the speaker (receiving) where the signal disappears.
Check the components at that point.
between the telephone line and the speaker (receiving) where the signal disappears.
Check the components at that point.
2. No pulse dialing
3. No ring tone (or No bell)
4. No tone dialing
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