Item Notation Specification/functionCIS HP sensor S31 Detects CIS home positionCopyboard Cover Open/Closed Sensor 0 S32 Ends original size identification with the copy board cover at 5 degCopyboard Cover Open/Closed Sensor 1 S33 Detects the copyboard cover open/close. Starts original size identificationwith the copy board cover at 30 deg.Original Size Sensor 0 S34 Helps identify original size (AB, INCH/AB/K, INCH/A)Original Size Sensor 1 S35 Helps identify original size (AB, INCH/AB/K, A)Original Size Sensor 2A S36 Helps identify original size (AB, INCH/AB/K, A)Original Size Sensor 2B S36 Helps identify original size (INCH/A)Original Size Sensor 3 S37 Helps identify original size (AB, INCH/AB/K, INCH/A, A)CIS unit - Indirect exposure by LED (LED & photoconductive body)Reader Heater H5 Prevents condensation on the copyboard glassReader relay PCB PCB2 Controls the reader unit drive and image process■ Reader relay PCBThe function configuration of reader relay PCB is described below.J551J560 J559J552J562J561J553J554J555IC2 IC7J557J558J563J556Jack No DescriptionJ551 Receives power from the machine (printer unit)J552 Communication with main controller PCBJ553 Communication with main controller PCBJ554 Communication with main controller PCBJ555 Connection to copyboard cover open/close sensorJ556 Connected to the contact image sensor (CIS) HP sensor.J557 Connection to original size sensor (2A/2B/3)J558 Connected to the contact image sensor (CIS) sensor.J559 Connection to Scanner motorJ560 Power supply to DADFJ561 Communication with DADFJ562 Communication with DADFJ563 Connection to original size sensor (0/1)2. Technical Explanation24
