Metrohm 870 KF Titrino plus Manual - Manual (Page 79)

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9 Troubleshooting
870 KF Titrino plus
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Problem Cause Remedy
The printer model is not
compatible. Use a printer which fulfills the required specifi-
cations (see Chapter 10.4.4, page 74).
The USB keyboard
or the PC mouse
does not function. The keyboard or mouse is
not recognized by the
instrument. ￭ Switch the 870 KF Titrino plus off and on
again.
￭ Use a hub on the USB connector and con-
nect the keyboard or mouse to the hub.
The keyboard or the mouse
is not compatible. Use a model which fulfills the required specifi-
cations (see Chapter 10.4, page 72).
The display is no
longer readable. The contrast is set incor-
rectly. Adjust the contrast correctly (see Chapter 6.1,
page 39).
Mettler XP balances
send "R" or "O ----"
as ID1. The automatic calibration
of the balance is switched
on. Switch off the automatic calibration.
Message 020-511
"Action not possi-
ble" is displayed. The USB stick is no longer
connected. 1. Connect the USB stick.
2. Switch the instrument off and on again.
The USB stick is full. ￭ Use a different USB stick.
￭ Delete files with the aid of a PC.