Off, Projection Lamp Voltage Control Circuit | Kodak 2400DSV

4

Mechanical and Electrical

4.1.3 Projection Lamp Voltage Control Circuit

The intensity of the light emitted by the Projection Lamp is adjusted to a level optimum for the image density by controlling the voltage applied to the Projection Lamp.

The exposure data optimum for film image density is determined through auto exposure data sampling made during prescan.

This exposure data is output as a Projection Lamp clock from the Main Control Board (PWB-BB) to the Projection Lamp Regulator (PU2).

The ON and OFF periods of the Projection Lamp clock extending 606

∝sec. are varied to control the Lamp voltage. The longer the OFF time, the

higher the Lamp voltage.

Projection Lamp clock

ON	OFF
H
L
606 ∝sec.

38

Image 45

Kodak 2400DSV service manual Off, Projection Lamp Voltage Control Circuit

Contents

2400DSV Preface Contents Mechanical and Electrical Disassembly and Cleaning Precautions Overview Function Mode List Function Mode and AdjustmentMode Operations Handling of P.W.Boards SE The print function at the time of Toner Empty detection Troubleshooting for malfunction 113 TroubleshootingImage Troubleshooting 117 110 Safety Precautions for Inspection and Service Page Page Safety Precautions for Inspection and Service Avoid Direct Exposure To Beam Other Precautions Vorsicht Used Batteries Precautions Usage Environment Installation Environment Installation Space Installing The Power Supply 1 MS Specifications General Information 2 MS 6000 & MSP3000 Printer System System Configuration Connection Mode Parts Identification Component Layout Electrical Components Layout Symbol Name PWB-D PWB-F Electrical Parts Function Symbol Name Function PC I/F Board Communicates with the Personal Computer Machine Connectors Layout PJ3F 2P 2 I/F Board PWB-EE Electrical Service Parts on P.W.Boards 3 I/F Board PWB-SS RSW1 .. For Scsi ID setting Control Panel Basic Output Explanation of Control PanelSelection Masking When this lamp is lit Page Manual Masking → OFF Itive for print production Display Contents Unit Tion set to ON, the previous setting remains valid Correction Control Panel Shift Function Output Maximum level Screen Image → Print Image Explanation Image Processing General Information Projection Lamp LA1 Illumination Mechanism Projection Lamp Voltage Control Circuit OFF Thermostat TS1 Condenser Lens Projection Lens Image Rotation Prism RotationAuto Image Rotating Motor M5 Control Circuit Optical Section Scan Path Reader Path Scan Table Drive Mechanism Scan Mirror Motion Control DC24V Mirror Scan Motor M1 Control Circuit CCD Section CCD PWB-A PWB-BB Image Bus Mechanical and Electrical Converts the output resolution PWB-EE Auto Masking Masking Area DetectionRequirements for Auto Masking 17mm or more 10mm or more Requirements for Auto Skew Correction Auto Image Skew Correction Manual Frame Masking J K Operation 2 to 1 Printing Function Identification Marks Precautions for Disassembly and Cleaning Precautions Precautions when replacing PWBs Precautions regarding transportation and storagePrecautions when checking PWBs Handling of P.W.Boards Maintenance and Inspection Preventive Maintenance Schedule ListDetails of readjustments needed when parts are replaced Removal of the Outer Covers Disassembly and Cleaning ProcedurePage Page Replacing of the Projection Lamp Cleaning of the Condenser Lens and Mirrors Cleaning of the Projection Lamp Cleaning of the each Mirrors Cleaning of the CCD Filter Removal of the CCD Assy Loosen the four screws Removal of the Power Unit PWB-BB Replacing Scan Motor bushing and friction plate Replacing the Fuse of the Power Unit Replacing the Main Fuse Exchanging the Oscillator Chip Reinstall all the covers Overview Function Mode and Adjustment Mode Setting Function Function Mode List Mode Setting Function Mode Setting Function Mode machine operation checks About the Function Mode Setting Label Operation of the Function Mode Entering the Function ModeExecution method in F and b mode except F4, F8 and b6 Execution method in F and b mode F4, F8 and b6 Execution method in S, y and o modeLeaving the Function Mode 1 S1 Auto Reset Mode Operations2 S2 Auto Power Save 4 S4 Coin Vender / Foot Switch Setting 5 S5 Fine Mode Setting 6 S6 Paper Tray feed size MSP 3000 Printer7 S7 Machine ID Printing 8 S8 Cycle print mode 9 S9 Nega Contrast AdjustmentSA Posi Contrast Adjustment SC Scan Table Stop Position Adjustment Reader Position Sb Scan Table Stop Position Adjustment Scan Position SE The print function at the time of Toner Empty detection Sd Auto image rotation 90 degree rotation function 1 y2 Auto Paper Source Switching 2 y3 Auto Film Format Select Print3 y5 Memo Image Masking 5 y7 Auto Skew Correction Retain 4 y6 Prescan OperationYb Magnification Warning Display YC Print Reserve Function 1 o1 Inch/Metric Select 2 o2 N-P Auto Exposure Coarse Adjustment 3 o3 P-P Auto Exposure Coarse Adjustment 4 o4 Scan Speed Adjustment 5 o5 Adjustment of the image area Lengthwise Position 6 o6 Adjustment of the Top and Bottom Frame Black Band Width 7 o7 Adjustment of the Right and Left Frame Black Band Width 8 o8 Projection lamp burn out detection L2 setting OA Host Driver SettingOb Vender/Model Name Setting 2 F2 Scan Counter 1 F1 ROM Version Check3 F3 Print Counter 4 F4 Counter Clear 7 F7 Projection Lamp Voltage Adjustment PU2 8 F8 Reset the Setting Data 1 b1 Checking the Scan Table Unit Function 2 b2 Scanning mirror operation check3 b3 For Factory use 5 b5 Single scan operation check 4 b4 Prism rotation operation check 6 b6 Shading Correction 8 b8 For Factory use 7 b7 Test Print Function How to Use This Section Troubleshooting Malfunction Indications 1 L2 Projection Lamp malfunction Malfunction Detection Timing2 C1 Scan Unit Drive malfunction 3 C2 Scan Mirror Drive malfunction 4 C3 Shading Correction malfunction Cb Communication Error5 C4 Cooling Fan Motor malfunction CL Printer Clock malfunction ↓OK Troubleshooting for malfunction code Replace M3 Reinstall the Oscillator Troubleshooting for malfunction No PowerProjection Lamp does not Light Up Electrical Components Check 10 S1 Power Switch 8 PU1 Power Unit6 PC3 Reader Position Sensor 7 PC4 Scan Position Sensor 12 TS1 Thermostat 11 S201 Interlock Switch Image Troubleshooting Troubleshooting 118 0820-0003-51D 0820-0004-58A Title Wiring Diagram 2/4 Model Voltage Title Wiring Diagram 3/4 Model Voltage Title Wiring Diagram 4/4 Model Voltage Copyright