Manual for NV-U83T/NV-U73T

Manual for NV-U83T/NV-U73T

Brand: SONY

Category: Navigation Device

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 7:34 p.m.

Manual Publish Date: 2007-10-29

Warranty Information

No specific warranty period is mentioned in the provided pages.

  • Read This First: Contains instructions on installing the unit, locating controls, and featured navigation operations.
  • Before You Use (this manual): Provides important notices, warnings, specifications, and troubleshooting.
  • Quick Guide for Bluetooth Hands-free Calling (NV-U83T only): Instructions for basic Bluetooth functions.
  • Instruction Manual (PDF on disc): Descriptions of all functions.

Safety Precautions:

  • Install in a safe place, not obstructing driver's view or above airbags.
  • Securely attach the unit to the cradle.
  • Do not apply excessive force.
  • Comply with traffic rules.
  • Do not continuously watch the unit while driving.
  • Stop the car in a safe place to operate the system.
  • Do not modify or disassemble the unit.

Handling:

  • Keep foreign objects out of connectors.
  • Turn off and remove the unit when not in use to prevent battery drain.
  • Use only supplied or optional accessories.
  • Do not expose to fire or water.
  • Pull cables by the plug, not the cable.
  • Remove the unit from the car to prevent theft or heat damage.
  • Battery charging temperature: 5 – 45 °C (41 – 113 °F).
  • Avoid high ambient temperatures to preserve battery capacity.

GPS:

  • GPS information from satellites may be difficult to obtain in tunnels, under highways, between tall buildings, or dense foliage.
  • Windshield material can affect GPS reception.

Troubleshooting and error codes

Problem Solution
The unit does not turn on. → Charge the built-in battery.
→ Check that the car battery adapter is securely inserted into the cigarette lighter socket.
The built-in battery cannot be charged. →Turn on the unit, then turn off the unit.
→ If the car battery adapter is being used, disconnect it from the cigarette lighter socket, then reconnect.
→The built-in lithium-ion battery can be charged at temperatures between 5 – 45 °C (41 – 113 °F). The battery may not be charged if the temperature inside the unit increases because of direct sunlight exposure, etc. This is not a malfunction.
→Turn on the computer during USB charge. Note that the CHG indicator may light up in green in the computer standby mode, even though the built-in battery is not fully charged.
GPS signal cannot be received. Firstly, read the GPS overview (page 6), then check the GPS status by touching "General" → "GPS Status." in the main menu →
• The system cannot receive GPS signals due to an obstruction.
→Move your car to a place where signals can be received clearly.
• There is an obstacle in front of the GPS antenna.
→ Install the unit where the signal is not interrupted by the body of the car, etc.
• GPS signal reception may be poor depending on the material of the car's windshield.
→ Use the optional External GPS Antenna VCA-42. (NV-U73T only)
The car position on the map does not match the current road. The error margin of the signal from the GPS satellites is too large. A maximum error margin of a few hundred meters can exist.
Voice guidance cannot be heard. The volume is set too low.
→ Raise the volume.
The LCD is not displayed normally. • In high temperatures, the LCD may darken and not display clearly. In low temperatures, afterimage may occur on the LCD. These are not malfunctions, and the LCD will return to normal when the temperature returns to within the specified operating range.
• The LCD is dark.
→ The auto dimmer function may be activated because its sensor is covered by a hand, etc.
The cradle comes off the attachment surface. Attachment strength weakens if the surface of the suction cup or attachment surface becomes dirty.
→ Clean the surface of the suction cup and the attachment surface with a soft, wet lint-free cloth (page 11).
The demonstration mode starts automatically even if no operation is performed. → Turn off the auto demonstration mode by touching in the main menu → "General" → "Demonstration Mode." Then, confirm that "Demonstration Mode" is set to off.
Bluetooth function (NV-U83T only)
The connecting cellphone cannot detect this unit.		 → Set "Bluetooth Signal" to "ON."
• While connecting to the cellphone, this unit cannot be detected from another cellphone. Disconnect the current connection and search for this unit from another cellphone.
Bluetooth connection is not possible. → Perform pairing again.
• Depending on the model of your cellphone, searching from this unit may not be possible.
→ Search for this unit from the cellphone.
• Depending on the status of the cellphone, searching from this unit may not be possible.
→ Search for this unit from the cellphone.
→ Check the pairing and connection procedures in the manual of the cellphone, etc., and perform the operation again.
→ Go to the Sony website to verify that the cellphone model is one that can be connected to this unit.
The name of the detected cellphone does not appear. Depending on the status of the cellphone, it may not be possible to obtain the name.
The caller's voice volume is low. → Adjust the volume by touching +/- in the display.
Echo or noise occurs in phone call conversations. • Lower the volume.
• "Noise / Echo Cancellation" is set to "OFF."
→ Set "Noise / Echo Cancellation" to "Mode 1" or "Mode 2."
• If the ambient noise other than the phone call sound is loud, try reducing this noise. E.g.: If a window is open and road noise, etc., is loud, shut the window. If the air conditioner is loud, lower the air conditioner.
The sound quality of the caller's voice is poor. Phone sound quality depends on reception conditions of cellphone.
→Move your car to a place where you can enhance the cellphone's signal if the reception is poor.
Some functions do not work. → Check that the connecting cellphone supports the functions in question.
The name of the other party does not appear when a call is received. • The other party is not stored in the phone book.
→ Store in the phone book.
• The calling phone is not set to send the phone number.
Pairing failed due to time out. Depending on the connecting cellphone, the time limit for pairing may be short. Try completing the pairing within the time.
No sound is output from the unit's speaker during hands-free call. → If the sound is output from the cellphone, set the cellphone to output the sound from the unit's speaker.
Restoring the unit If the navigation software freezes, try resetting the unit.
Press the RESET button, then turn on the unit.
Note
After you reset the unit, it may take some time to receive GPS signals when turning on the unit.
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