Kenwood TS-890S Operation Manual - Page 182

18 TROUBLESHOOTING Troubleshooting Check the following before requesting for repair of the transceiver. Problems Related to Reception and Transmission Symptom Probable Cause Corrective Action Power does not turn on when [ ] is The power switch of the regulated DC power Set the power switch to ON. pressed. supply is not turned on. The DC power cable is not correctly connected. Check the DC power cable to ensure that the polarity is correct. (Red: +, black: -) The DC power cable is not fully inserted. Ensure that the cable is fully inserted. The fuse of the DC power cable is blown. Address the cause of the blown fuse and replace it with a new fuse according to the designated capacity. A voltage exceeding the 13.8 V DC ±15% range Check the output voltage of the regulated DC is applied. power supply and configure it to the rated voltage (DC 13.8 V). The screen is not displayed normally The microcomputer is malfunctioning. when this transceiver is powered on. Reset this transceiver. A backup data damage detected screen is displayed. The initialization data was not configured correctly for some unknown reason. Press F4 [OK] on the "backup data damage detected screen" to perform Full Reset again. Signals cannot be received even when an antenna is connected. The RX sensitivity is low. The squelch is closed. The attenuator is ON. The preamplifier is OFF. Turn the [SQL] control and adjust accordingly. Set the attenuator to OFF. Set the preamplifier to ON. The antenna 1/2 selection is wrong. Select the correct antenna. RX ANT is ON. Check whether RX ANT is set to ON. Unable to perform tuning even though the antenna tuner is ON. Press and hold [AT] to perform tuning. Alternatively, stop the tuning operation. The gain level is lowered using the [RF] control. Turn the [RF] control all the way to the right. The transverter settings are not correctly configured. If the transverter is ON, check whether the settings are correctly configured and whether it is functioning properly. The transverter is ON. If the transverter is ON, check whether it is functioning properly. Signals received are not correctly demodulated. The operating mode is incorrectly selected. The AGC function settings are not correctly configured. Try switching to a different mode. Configure the AGC function settings correctly. The frequency does not change when The RIT/XIT function is OFF. the [RIT/XIT] control is turned. Press [RIT] or [XIT]. The cutoff frequency of the RX audio The RX DSP filter settings are not suitable for Change them to the appropriate settings. in the SSB mode is extremely high or operation. extremely low. There is significant distortion in the The AGC function is OFF. audio. Set the AGC function to ON, or turn the [RF] control to adjust RF gain. The [AF] control is set to a loud volume level. Turn the [AF] control to adjust the volume. No sound is output from the speaker. The [AF] control is turned all the way to the left. Turn the [AF] control to the right. The [SQL] control is turned all the way to the Turn the [SQL] control to the left. right. Headphones are connected. Unplug the headphones. CTCSS is set to ON in the FM mode. Set CTCSS to OFF. The S meter deflection is small in the The S meter sensitivity level is low. FM mode. Configure the S meter sensitivity to "High" in Menu [0-07]. "SCP.OVF" is displayed on the bandscope. The bandscope is receiving excessive signal. Use the attenuator for the bandscope. Refer to 4-1 1-1 1-1 17-4 1-1 17-1 4-2 6-1 5-6 4-10 4-10 4-11 4-2 16-15 16-15 4-4 5-2 5-7 6-2 5-2 4-2 4-2 4-2 1-2 5-30 4-10 7-1 18-2