Samsung SCX4521F Service Manual - Page 94

10) Document Scan sensor (a) Type (b) Position (c) LED : - Max current - Max Voltage (d) Output - Logic "H" - Logic "L" (e) LEVER-SENSOR SCAN : Photo interrupt : ADF PBA : 50mA : 3.3V : Off(No Position),No Paper : On (Doc Position),Paper : Scan Lower Torsion Spring 10. OPE(Operational Panel Equipment) 1) Ope Panel OPE Panel has a MICOM Chip on it and communicates with Main CPU using Serial communication Line(SIO). OPE Panel consists of Micom, Key Matrix Part, LED Driving Part and LCD Part. 2) Key Description No Part 1 Common 2 Save 3 Copy 4 Fax 5 Scan Feature 3*4Key Start Stop/Clear Menu Upper Level Enter ▶ ◀ Toner Save Reduce/Enlarge No.of Copies Original Type Darkness Template Resolution Phone Book Broadcasting On Hook Dial Redial / Pause Scan to Function Dialing and Option Input Starting Fax/Copy Job Cancel Current Job/Return to default Option select Return to upper level menu Option select/Execute Next menu or Next option item Previous menu or Previous option item TONER SAVE MODE select Select ZOOM ratio when copy Select the number of copies Change Copy Modes(Text,Text/Photo,Photo) Change the Darkness of the Copied image (Light/Normal/Dark) Select one of the predefined Copy templates. STANDARD>FINE>SUPER FINE>PHOTO>COLOR Search the user defined Phone number. When sending FAX data to many place in the same time. On Hook Dial Last number Redial / Pause select [scan to PC], [scan to FAX], [scan to E-mail] function.