Kenwood TS-990S Operation Manual - Page 280
Resetting All Configurations, Replacing The Fuse For An External Antenna Tuner
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18 TROUBLESHOOTING 6 Press [-] (F4) or [+] (F5). • You can press [-] (F4) or [+] (F5) until the interval of the double-beat caused by the received beat and the sidetone is maximized to make the double-beat inaudible. In this case, the frequency difference between the received audio and the sidetone is minimized. • You can also rotate the MULTI/CH control for the calibration. Pressing and holding [(RESET)] (F2) resets the transceiver to its default configuration. 7 Press [d
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18 TROUBLESHOOTING
18-2
Index
Contents
6
Press
[-]
(F4) or
[+]
(F5).
•
You can press
[-]
(F4) or
[+]
(F5) until the interval of the
double-beat caused by the received beat and the sidetone
is maximized to make the double-beat inaudible. In this
case, the frequency difference between the received audio
and the sidetone is minimized.
•
You can also rotate the
MULTI/CH
control for the
calibration. Pressing and holding
[(RESET)]
(F2) resets
the transceiver to its default configuration.
7
Press
[<MAIN]
to exit the
Advanced Menu
screen.
8
Press
[ESC]
to exit.
Note:
◆
If the signal for calibration is outside the level of the exterior
reference signal, ranging from -10 dBm to +10 dBm, or the
frequency accuracy, 10 MHz ´10 ppm, the internal reference
frequency may not be correctly calibrated.
RESETTING ALL CONFIGURATIONS
You can reset all configuration data in the transceiver to
their defaults.
Note:
◆
Once any reset begins, the data will be cleared. Reset the
transceiver after the configuration data has been stored in another
storage device.
[F1]~[F7]
[MENU]
F[RESET]
Follow the procedure below to fully reset the transceiver.
1
Press
[RESET]
(F) from the
Menu
screen to open the
RESET
screen.
2
Press
[
]
(F2) or
[
]
(F3), or rotate the
MULTI/CH
control to select the full reset.
Press
[MENU TOP]
(F) to exit the
Reset Configuration
Data
screen and display the
Menu
screen.
3
Press
[SELECT]
(F4).
•
A message prompting the start of the Full Reset appears.
•
Pressing
[CANCEL]
(F4) clears the message prompting
you to start Full Reset, without starting the Full Reset.
4
Press
[SELECT]
(F4).
The transceiver is reset and automatically restarts.
REPLACING THE FUSE FOR AN EXTERNAL
ANTENNA TUNER
There is a 4 A fuse employed in the external antenna tuner
circuit. If a fuse blows, determine the cause then correct
the problem. Then, replace the blown fuse with a new fuse
supplied with the transceiver.
If the fuse blows again even after replacing it with a
new fuse, disconnect the AC power cord and contact a
KENWOOD service center.
PRECAUTION
◆
The supplied 4 A fuse is the fuse to be used for the external
antenna tuner. Do not use a fuse with a different rating.
HOW TO REPLACE THE FUSE
1
Disconnect the AC power cable from the transceiver.
2
Unscrew the screws on the upper case and detach the
upper case.
3
Replace the fuse as shown in the illustration.
FUSE
4A
4
Attach the upper case and tighten the screws.
Note:
◆
Pay attention not to lose the screws removed during this process.
◆
The edge of the chassis and case can be sharp. Use caution to
prevent accidental injury.