16 TROUBLESHOOTING
TROUBLESHOOTING
The problems described in this table are commonly encountered operational malfunctions. These types of difficulties are usually caused by improper
Note: Placing a powered portable transceiver near this transceiver may cause noise in the transceiver.
Problem |
| Probable Cause |
| Corrective Action | Page | ||
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The transceiver will not | 1 | DC power supply is OFF. | 1 | Switch ON the DC power supply. | 18 | ||
power up after | 2 | Faulty power cable | 2 | Inspect the power cable. Confirm | 2, 3 | ||
connecting a 13.8 V DC |
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| polarities are correct. |
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power supply and |
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| Red: positive (+); Black: negative |
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pressing [ |
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appears on the display, |
| securely. |
| power supply are secure. |
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and no receiver noise is | 4 | Power cable fuse is open. | 4 | Look for the cause of the blown fuse. | 5 | ||
heard. |
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| After inspecting and correcting any |
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| problems, install a new fuse of the |
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| specified rating. |
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After switching ON the | 1 | The input voltage is outside 13.8 V | 1 | Correct the input voltage or use a 12 to | 2, 3 | ||
power, the transceiver |
| DC ±15% (11.7 to 15.8 V DC). |
| 16 V battery. |
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does not function | 2 | The microprocessor has | 2 | Review “MICROPROCESSOR | 88 | ||
normally. For example, |
| malfunctioned. |
| RESET”. After understanding what |
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no digits or incorrect |
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| data will be lost, do a Partial Reset. If |
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digits appear on the |
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| the problem remains, do a Full Reset. |
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display. |
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After switching ON the | 1 | The current rating of the DC | 1 | Use the DC power supply that has | 3 | ||
transceiver, the |
| power supply is too low. |
| 20.5 A or more current rating. |
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transceiver refuses to | 2 | Two same DC power supplies | 2 | Connect 2 DC power supplies to the | 3 | ||
transmit. |
| (20.5 A or more each) or a DC |
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| power supply that has 41 A more |
| difference between 2 DC power |
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| current capacity. |
| supplies must be within 1.0 V to |
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| transmit. Also, confirm each DC power |
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| supply has a 20.5 A or higher current |
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| rating. If a DC power supply that has |
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| 41 A more current capacity, two same |
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| type of DC cables must be used. |
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The transceiver does | 1 | Procedures are not being | 1 | Review “WRITING CONVENTIONS | ii | ||
not respond correctly |
| followed precisely. |
| FOLLOWED”. |
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after pressing key | 2 | The Frequency Lock function is | 2 | Press [MENU/ F.LOCK] (1 s) to switch | 63 | ||
combinations or turning |
| ON. |
| the function OFF. |
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controls per instructions | 3 | The microprocessor and its | 3 | Review “MICROPROCESSOR | 88 | ||
in this manual. |
| memory need resetting. |
| RESET”. After understanding what |
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| data will be lost, do a Partial Reset. If |
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| the problem remains, do a Full Reset. |
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The frequency cannot | The Frequency Lock function or | Press [MENU/ F.LOCK] (1 s) to turn the | 63 | ||||
be changed. | Lock All function is ON. | Frequency Lock function OFF. The “ ” |
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| icon disappears. |
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SSB audio quality is | 1 | The wrong operation mode is | 1 | Select USB or LSB for the mode. | 19 | ||
very poor; the high or |
| selected for the receiver. |
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low audio frequencies | 2 | The AF DSP filter is incorrectly | 2 | Press [FIL/ NAR] then turn the MULTI | 46 | ||
are absent. |
| set. |
| control to adjust the DSP filter width. |
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| 3 | Noise Reduction 1 or 2 is ON. | 3 | Press [NR] until the NR function turns | 47 |
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| OFF. |
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| 4 | Beat Cancel 1 or 2 is ON. | 4 | Press [BC/ CW.T] until the BC function | 47 |
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| turns OFF. |
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84
