Kenwood TS-990S - Manual (Page 272)

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 Release [CAL.T] (F7).
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. You must 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) to clear 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.