Interrupted recordings on front side of chart.

TM 9-2320-211-20-3-2

(4) Interrupted recordings on front side of chart.

(a) Problem. All recordings on the front side of the chart are inter-

rupted, leaving a blank space for part of a trip.

(b) Cause. Tachograph was opened. Blank spaces will show on the

chart because the recording styluses were not touching the chart (Fig. 20-20).

Figure 20-20. All Recordings on Front Side of Chart Interrupted

In addition, check final mileage figures on odometer with original mileage figures on

next chart. If the figures are not the same, trips have been made between chart

changes. Check the time used to take out one chart and put in another. This will

be clearly recorded on the chart. Normally, a new chart should be put into the

tachograph as soon as the used one is taken out. If distance does match, the chart

may have been turned backwards to show different working times (Fig. 20-21).

Figure 20-21. Trip Made Between Removal of Used Chart

and Insertion of New Chart