Panasonic KX-FC962RU-T / KX-FC962UA-T Service Manual ▷ View online
7.7.6.3. NG Example
97
KX-FC962RU-T / KX-FC962UA-T
7.7.7. 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 SP-PHONE, 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 SP-PHONE, trace that signal route locally with the following Check Sheet and locate the faulty point.
7.7.7.1. Check Sheet for Signal Route
98
KX-FC962RU-T / KX-FC962UA-T
3. No ring tone (or No bell)
CROSS REFERENCE:
Check Sheet for Signal Route(P.98)
NCU SECTION(P.161)
4. No tone dialing
CROSS REFERENCE:
Check Sheet for Signal Route(P.98)
7.7.7.2. Defective fax NCU section
1. No Speakerphone and no monitor reception
Perform a signal test in the FAX NCU section and locate a defective point (where the signal disappears) on each route between
the microphone and the telephone line (sending), or between the telephone line and the speaker (receiving). Check the
components at that point. Check Sheet for Signal Route(P.98) is useful for this investigation.
the microphone and the telephone line (sending), or between the telephone line and the speaker (receiving). Check the
components at that point. Check Sheet for Signal Route(P.98) is useful for this investigation.
2. No pulse dialing
99
KX-FC962RU-T / KX-FC962UA-T
7.7.8. POWER SUPPLY BOARD SECTION
7.7.8.1. Key components for troubleshooting
Check the following parts first: F101, D101-D104, C106, Q101 and IC101.
This comes from our experience with experimental tests. For example: power supply and lightning surge voltage test, withstanding
voltage test, intentional short circuit test, etc.
voltage test, intentional short circuit test, etc.
Caution:
If you find a melted fuse in the unit, do not turn on the power until you locate and repair the faulty parts (except for the fuse);
otherwise the fuse will melt again and you cannot pinpoint the faulty point.
In most cases, the symptom is that nothing is output. It is more likely that the fault is in the primary side rather than the secondary
side. Check the primary side first.
side. Check the primary side first.
100
KX-FC962RU-T / KX-FC962UA-T
Click on the first or last page to see other KX-FC962RU-T / KX-FC962UA-T service manuals if exist.