17. TROUBLE SHOOTING
GENERAL
Problem | Cause | Measure | |
Unit can not | Unit fuse blown. | Replace with new fuse of correct rating. | |
Car battery fuse blown. | Replace with new fuse of correct rating. | ||
power on. | |||
ACC power is turn off | Turn on the ACC | ||
| |||
Unit can not |
| Turn off the power and press the [RESET] | |
| button with a thin rod. | ||
power on. |
| ||
|
| ||
Nothing happens |
| Note: | |
The microprocessor has | When the [RESET] button is pressed, turn off | ||
when buttons are | |||
pressed. | malfunctioned due to noise, etc. | the power.* | |
|
| ||
Display is not |
| * When the [RESET] button is pressed, | |
| frequencies of radio stations, titles, etc. stored | ||
accurate. |
| ||
| in memory are cleared. | ||
|
| ||
Remote control | Battery depleted. | Change the battery. | |
does not work. | Battery installed incorrectly. | Install the battery correctly. | |
| Improper audio output connection. | Check wiring and correct. | |
| Volume set too low. | Increase volume level. | |
No/low audio | Speakers damaged. | Replace speakers. | |
output | Heavily biased volume balance. | Adjust the channel balance to center position. | |
| |||
| Speaker wiring is in contact with | Insulate all speaker wiring connections. | |
| metal part of car. | ||
|
| ||
| Use a standard disc. | ||
Poor sound quality | Speaker power rating does not | Replace speakers. | |
match unit. | |||
or distortion |
|
| |
Wrong connections. | Check wiring and correct. | ||
| |||
| Speaker is shorted. | Check wiring and correct. | |
Unit resets itself | Incorrect connection between | Check wiring and correct. | |
ACC and Battery. | |||
when engine is off. |
|
| |
Battery voltage is too low | Charging the battery, or replace the new battery. | ||
| The brightness control is too low. | Adjust the brightness properly. | |
|
|
| |
| The operating condition is not | The temperature inside the vehicle may be 0°C | |
The display is | or lower. Set to an appropriate temperature | ||
good. | |||
dark. | (25°C or so) and check it again. | ||
| |||
|
| The display is made dark at night to prevent | |
| The headlight of the vehicle is lit. | the glare (When the headlight of the vehicle is | |
|
| lit in the daytime, the display gets dark.) | |
|
| This is not a faiure, but a phenomenon peculiar | |
There are red, |
| to a liquid crystal panel (The liquid crystal | |
| panel is produced according to technology | ||
green, and blue | ____________________ | with very high precision. Note that, though | |
points in display |
| there are effective pixels of 99.99% or more, | |
|
| pixel missing or normally lit pixels account for | |
|
| 0.01%). |
English
NX702 41