Chapter 55-18F-5-437) Remove the 4 screws [1], and detach the cover [2].F-5-448) Disconnect the 2 connectors [1], and free the cable from the wire saddle[2].F-5-459) Remove the 2 screws [1], and pull out the reader controller PCB base [2].F-5-4610) Remove the 7 screws [1], and detach the reader controller PCB [2].F-5-475.4.2.7 After Replacing the Reader Controller PCB orAfter Initializing the RAM 0007-0746iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N // iR4570N / iR2230 / / / iR3530 /- Before replacing the reader controller PCB, be sure to generate the latest P-PRINT printout.the PCB>- Using the SST, upload the reader controller backup data; after initializingthe RAM, download the data, thus eliminating the need for the followingadjustment.1. Reader Unit-Related Adjustment1) Using the SST, download the latest system software (R-CON).2) Make the following selections in service mode:COPIER>FUNCTION>CLEAR>R-CON; then, press the OK key toinitialize the RAM. Thereafter, turn off and then on the main power.3) Enter the appropriate values using the following service mode items:a. service label (behind reader unit left cover) valuesa-1. CIS read position adjustment (fixed reading)COPIER>ADJUST>ADJ-XY>ADJ-Xa-2. main scanning direction position adjustment (fixed reading)COPIER>ADJUST>ADJ-XY>ADJ-Ya-3. shading position adjustment (fixed reading)COPIER>ADJUST>ADJ-XY>ADJ-Sa-4. main/sub scanning direction MTF valueCOPIER>ADJUST>CCD>MTF-MG2. ADF-Related AdjustmentThe machine keeps ADF-related service mode data in the RAM of the readercontroller; as such, you will have to make the appropriate adjustments ifyou have replaced the reader controller or initialized the RAM.1) Enter the values indicated in the P-PRINT printout you have previouslygenerated for the following:a. main scanning direction position adjustment (stream reading)COPIER>ADJSUT>ADJ-XY>ADJ-Y-DFb. original stop position adjustmentFEEDER>ADJSUT>DOCSTc. original feed speed (magnification) adjustmentFEEDER>ADUST>LA-SPEED2) Make adjustments using the following items:a. tray width adjustmentFEEDER>FUNCTION>TRY-A4FEEDER>FUNCTION>TRY-A5RFEEDER>FUNCTION>TRY-LTRFEEDER>FUNCTION>TRY-LTRRb. CIS read position adjustment (stream reading)COPIER>FUNCTION>INSTALL>STRD-POSc. white level adjustmentCOPIER>FUNCTION>CCD>DF-WLVL1COPIER>FUNCTION>CCD>DF-WLVL2When you have finished the foregoing adjustments, put the P-PRINT print-out [1] you have previously generated in the service book cassette to replacethe old P-PRINT printout.[1] [2][2][1][1][1][2]
