DAVIS DriveRight 600E Users Guide (8126, 8179) - Manual (Page 29)

25
Troubleshooting Guide
• The speed reading on the DriveRight 600
E
agrees with my
vehicle’s speedometer, but the distance reading on the
DriveRight 600
E
and my odometer differ (or vice versa).
For best accuracy, calibrate using the vehicle’s odometer (see
“Calibrating Using Distance Readings” on page 7). Use the PLUS
and MINUS buttons to readjust the distance reading to match the
vehicle’s trip meter reading periodically, to maintain accuracy.
• The DriveRight 600
E
seems to be recording erroneous readings
at low speeds.
Excessive mechanical vibrations at low speeds can cause erroneous
readings in GD (General Duty) and HD (Heavy Duty) models. Have
the installation checked if this problem keeps occurring.
• The DriveRight 600
E
indicates erroneous decelerations at low
speeds (VSS — Vehicle Speed Sensor — models only).
On some vehicles, the wrong dip switch settings can cause the
DriveRight 600
E
’s speed reading to abruptly drop to zero at around
10 to 13 mph, which generates an erroneous deceleration log. Check
the VSS cable dip switch settings if this problem occurs.The tamper
light won't go off.
Enter your security code (see “Tamper Log” on page 21).
• The display is black or all the segments appear to be on.
The display was left in direct sunlight. The display will return when
it cools down. Even though the display is black, the DriveRight 600
E
continues to record data.
• I’ve forgotten my security code.
Read the vehicle’s code settings using FMS (see FMS online Help
for details). Otherwise, ship the DriveRight 600
E
back to us with a
check for $25.00 and a note explaining the situation. Davis
Instruments returns the DriveRight 600
E
to you with the code set to
0000.