Sharp FO-2970M Service Manual - Page 53

j. Timing chart • Printing process Pre-revolution processing Timing from DPAGE (internal signal of ASIC) to BIAS ON (pre-revolution processing) is specified. Before rotation of printing (unit:sec) MM PMD APCSTT LEND_ HSYNC_ LDATAEN LD_ MC 3.5 ACSIN TC/Bias PU HLON DREADY_ DPAGE_ 1.03 0.7 68%DC ON 0.98 44%DC ON AC SIN AC 68% AC 44% 143.9 93.1 211.7 unit(µs) Fig. 17 Laser control becomes hard control from the movement when HSYNC interruption was permitted. Post-revolution processing Timings from POUT to motor stop (post-revolution processing for printing) are specified. After rotation of printing (unit:sec) MM PMD APCST LEND HSYNC_ LDATAEN LD_ Harf line discharge(20Line) 0.47 Harf line discharge(20Line) MC Sine wave form output ACSCN TC output TC/Bias output 50% DC ON 4.8 POUT 0.54 OFF Cleaning OFF 3.0 OFF 68% DC ON 0.5 OFF OFF OFF DREADY DPAGE After rotation of printing STOP Fig. 18 FO-2970MU Continuous printing processing *1 Waiting according to fixing temperature (Environmental temperature) *2 Top margin READY DPAGE VSYNC PRSTT MM 3.5 PMD APCSTT LEND HSYNC LDATAEN LD_ MCON 4.0mm(*2) ACSIN Min1.0(*1) Tc/BiasON 0.28 0.68 PUS PIN 1.25Typ. POUT Before rotation of printing (Letter Size) (0.5) 3.0 0.54 After rotation of printing Fig. 19 Revolution before cleaning when power is on and cover is closed Unit: second MM PMD APCSTT ON ON 3.5 5.6 3.0 LEND_ Hard control start LEND_ Hard control end LEND_ HSYNC_ Generation LDATAEN LD_ MC ACSIN TC/Bias output voltage TC/Bias HLON DREADY_ DPAGE_ ON 1.0 OFF 68%DC ON OFF Cleaning (5.0) OFF Fig. 20 5 - 17