229DP-8032/80252008Ver. 1.25. Installing / Replacing Developer6. Installing / Replacing OPC Drum & Sensor Replacement7. Service Parameters for Copy Image CompensationAfter F8-09 => F6-21: TDC Gain Voltage (0.1% / Step)F6-26: TDC Judgement Level+TDC Adjustment QUANTUM ControlF8-09 Toner Density Adjustment (TDC)7 min. within 30 sec.AutomaticallyAfter F8-14 => F6-65: Black Density Reference (Voltage)F6-66: Black Density Output (Quantum Compensation = 0)+Gain Adjustment QUANTUM ControlF8-14 Black Density Gain (Sensor Output)within 30 sec.within 30 sec.AutomaticallyDensity Control7 Steps: Control PanelRead Density• F6-49 Text Mode Image Density• F6-50 T/P Mode Image Density• F6-51 Photo Mode Image DensityCotrastAuto ContrastScannerScanner GammaPrinter GammaPrinterPrinterText, T/P ModePhoto ModeQUANTUM TargetGammaLSU PWM Adjustment• F6-39 LSU Unit PWM Adjust 23 dots PWM adjustment value of LSU(In case of LSU replacement)QUANTUM• F5-25 Digital QUANTUM (QUANTUM On/Off)CCDImageSensor• Perform F8-18 and print out the Halftone Patch Pattern(3 dots PWM)• Check the slightly visible level of the halftone andinput the position value to F6-39 LSU Unit PWM Adjust 2.Print LSU PWM pattern • F8-18 LSU PWM Pattern 23 DotsPWMControlMEDErrorDiffusionLaserDutyControl LSU• F6-54 Text Mode Contrast• F6-55 T/P Mode Contrast• F6-56 Photo Mode Contrast• F5-50 Auto Contrast AdjustmentAuto ON/OFFDefault: ON
