The blinking CH means that the Developing cartridge not installed.
Here is how to correct the issue:
1)Turn OFF the power of the machine.
2)Open the front cover.
3)Install the developer unit and toner cartridge.
4)Turn ON the power of the machine with the cover opened.
5)Enter Sim25-02. (Entered value display section: "CH" is displayed. Start LED: OFF)
6)Close the front cover. (Entered value display section: "--" is displayed. Start LED: ON)
7)Press [START] key to execute Sim25-02.When [START] key is pressed, the main motor rotates for 3 minutes to determine the toner sensor reference value and clear the developer rotation time as well as to clear the developer counter.When the operation is completed normally, the ATC sensor reference value is displayed on the entered value display section. If an error occurs, one of the following indicators is lighted. LED Misfeed indicator Paper required indicator This simulation must be executed only immediately after installing developer, Do not execute this simulation for any developer which has been used. If the machine goes into the warm-up state before completion of this simulation, there is a possibility that toner may be supplied to the developer during warm-up. In such a case, therefore, the developer must be replaced with new one.
SOURCE: request service manual for sharp AR-5316
http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=7b292ec58f421b3b3b442c1437984770&q=Sharp+AR-5316
SOURCE: Sharp -COPIERS - AR-5316
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Sharp does offer a linux driver, look for a cups driver.. Sharp offers drivers for mac, linux, hp output servers, as/400, windows etc... of course this varies on model number...
SOURCE: sharp ar 250 copier error code CH
CH - open cover in the paper feed area
CH blinking - Dev unit is not properly
installed
For the 'CH' check the covers and make
sure all covers are closed properly.
For the 'Blinking CH' take the dev.
Unit open and the reinstall unit properly.
Pls rate – thank you
SOURCE: AR M700N copier jams... trouble code H5-01
h5-01 error is five consecutive jams in the fusingg section. P*C* gets you into dervice mode thenn 14 for trouble reset. then execute and restart. check the fuser pawls for dull edges and breaks. also check roller tensioning system on fuser.
SOURCE: ar-5316 showing error ch
CH steady means cover is open. Close either front or right cover well.
CH blinking means developer unit or toner cartridge not installed. Remove and return well and firmly.
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