The TWAIN driver must be told how to find your printer before you can scan.
: Common jams near the registration roller or fuser unit can be cleared by releasing the front cover lever. KYOCERA Document Solutions South Africa twain driver kyocera taskalfa 1800
On the Taskalfa 1800 hardware: System Menu -> Timer -> Network Timeout -> Set to . If set too low, the printer stops listening for the TWAIN command before your PC sends it. The TWAIN driver must be told how to