Code defines the possible causes

e-12 -. exposure lamp is lit when the feedback voltage is higher than 4.2v or 0.5v less than the exposure lamp goes exposure lamp voltage is higher than 1v 1 Open 2 Open 3.ac thermostat control board driver board failure 4 . fault

e-13 cpu is not received within .56 seconds to zero signal 1 . control board failure 2 . zero line open

e-20 cpu issued after changing the magnification signal is not received within 10 seconds to prepare for a signal from the optical plate optical board failure 2 control board failure

e-21 continuous copying , scanner stranded in the return to the original time of more than 0.4 seconds

An in situ sensor failure

2 . Scanning motor pulley or rope oil or damage

3 . Scanning motor does not turn

4 Optical board failure

5 control board failure

e-24 position sensor starts the next time the scanner is not turned on at the beginning of

After the e-2u scanner starts, still in situ sensors conduction state more than 1.3 seconds

e-28 in progress when the lens retracted mode, the lens in situ transmission output level within 6.4 seconds failed to change from low to high one . situ transmission failure

2 lens drive support organ failure .

3 Optical board failure

4 main control board failure

e-29 carried zoom mode when the lens when the lens position sensor output level within 6.4 seconds failed to change from low to high

e-2a Dou run when reflecting on the zoom mode and into their original sensor within 3.5 seconds , the mirror position sensor output level failed to change from low to high 1 mirror position sensor failure

Two mirror driving mechanism failure.

3 Optical board failure

4 main control board failure

e-2b when the mirror run into zoom mode in situ sensors, mirror position sensor output voltage can not change from high to low in 3.5 seconds

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