Copier turns on but will not copy

Here is a list of error code meanings for your device. You need to find out the sub code should be E7-?? To find the root cause. Sharp AR 161 Error Codes Trouble Codes

E7

E7 03 LSU trouble
E7 04 CCD white level trouble
E7 05 CCD black level trouble

The service manual was not available for the AL-2021 but the error codes are the same for the AR-5316
F5-02 error cause and remedy
Sharp AR 5316 Service Manual Page 27
E7-11 error cause and remedy
Sharp AR 5316 Service Manual Page 26

E7-10--shading trouble (black correction)

E7-11 = Shading Trouble

As part of it's calibration process the copier measures the light given off from the copy lamp by its reflection from a white strip under the glass. If the copy lamp has failed this will also give this code.

With the power off and the machine unplugged try cleaning the mirrors and the white strip under the glass. It is sometimes possible to fit the glass upside down so it's worth checking that the white strip is facing down.

This code will normally reset by powering off/on.

Hope this helps

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IMPRPER CONNECTION OF THE CCD UNIT CABLE DIRT ON THE MIRROR,THE LENS,AND THE REFERANCE WHIT PLATE
copy lamp lighting abnormality
ccd unit abnormality
MCU PWB abnormality
(when occurred in the scan position)improper installation of the mirror unit

Code E7 has got sub-codes. Go and press copy button to see the sub-code and then report it. Generally, this concerns the laser unit and i would advice you to clean the optical platen glass from interior and screw back well. If a code occurs, then report it for more help.

Hello sir;There have a procedure to reset;
1, press "program", "interupt", "clear", "interupt"
2, enter 14, then press start,then enter 0, press start again. then press clear.

Push P * C* in quick succession to enter simulation mode. Once there, enter 16 on the keypad. push the print button (like making a copy). Push 1 for yes then print button again. push the CA button. Copier should reboot and run fine for you.

E7 15 copy lamp disconnection : Copy Lamp Drive Circuit

you need a tech to replace the circuit board for the scanning lamp

can not be reset

26 = 2 & 6
39 = 3 & 9

E7 codes deal with the optical scanner unit and or the laser unit. It could also be the lamp in the scanner unit. The E7 is the main code. There is a sub code associated with it. To view the sub code hold down the start button. Below is a list of specific codes and their meanings:
E7-02: LSU trouble
E7-10: Shading trouble (Black Correction)
E7-11: Shading trouble (White Correction)
E7-12: Shading Trouble
E7-16: Abnormal laser output
If it is a laser (LSU) issue then the LSU may need replacing.
If it is a shading error the first step is to remove the platen glass carefully (with the power off because the inverter board). There is a thin white strip on the bottom side of the platen next to the slit glass. Clean this white strip with a soft cloth and a small amout of isopropyl alcohol.
Dust on the optics can also cause shading reference errors so gently blow off the mirrors with canned air.
Perform the following key procedure to reset error:
"#" key, Interrupt key, "C" key, Interrupt key
"1" key, "4"key
Start key, "CA" key.
See if unit cycles and comes back up. If not turn off and then back on the main power.
If error reappears on site technical service may be required.