Samsung SCX4521F Service Manual - Page 87

System Overview SCX-4517F is made of Main Control part, Operation Panel part, PC Interface part, Scan part, Line Interface part, Power part. Each part is independent with each other and the design concept is common use/standard design rule. Chorus2 ASIC which is made for only printer is used in the Main Control part, and another Micom which can communicate with Chorus2 through UART for Key-Scan, LCD display, LED control, etc.. is used for OPE Panel part. PC Interface control part - USB 1.1 and IEEE1284 - is comprised in the Chorus2 Main Controller ASIC and Image processor and CIS Interface part is comprised in the Chrous2 too. Modem chip, FM336 which make a function of FACSIMILE can the machine communicate with the other FAX machine on the speed of 33.6Kbps and the LIU(Line Interface Unit) supports the line connection with PABX or PSTN line. Power part which made of two part - SMPS and HVPS - supplies Voltage source to the controller part and high voltage to the printing image developing process. 1. Engine H/W Specification 1) Recording Method : LSU(Laser Scanning Unit) 2) Printing Speed : 16ppm (In continuing printing base A4, printing pages from 2nd to last during 1min) 3) Recording Density: 600 dpi 4) Cassette Capa. : Cassette ; 150sheets(75g/㎡ Base), 1-sheet Feeding : N/A((DRIVE Selection : Paper, OHP, Envelop - 1 sheet) 5) Manual Tray : All paper 1 sheet 6) Paper Size : Cassette ,Manual; Width = 76 ~ 216mm, Length = 125mm ~ 356mm 7) Effective recording size - A4 : 202 x 291 mm - Letter : 208 x 273 mm - Legal : 208 x 350 mm - Folio : 208 x 325 mm - Top Margin : 2 ± 2 mm - Left, Right Margin : 2 ± 2 mm 8) CRU(Toner Cartridge)Life : 3,000pages Printing(A4, ISO 5% Pattern Printing) 9) First Print Out Time : within 11sec ( Standby ) 10) Warming up time : within 35sec (Ambient : 25℃ )