Sony UP-895 - Default Chapter; Table of Contents

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UP-895/(E)
Table of Contents
1. Operating Instructions
2. Service Information
2-1. Board Layout...............................................................................................2-1
2-2. Disassembly ................................................................................................2-1
2-3. Removal of Major Parts .............................................................................. 2-2
2-3-1. Removal of Mechanical Block ...................................................2-2
2-3-2. Removal of MA-99 Board .........................................................2-3
2-3-3. Removal of Switching Regulator ...............................................2-3
2-3-4. Removal of Thermal Head .........................................................2-4
2-4. Tightening the Screws .................................................................................2-5
2-5. Installation of Fan Motor ............................................................................2-6
3. Electrical Alignment
3-1. AGC Adjustment.........................................................................................3-1
3-2. Video Level Adjustment .............................................................................3-1
3-3. Brightness and Contrast Adjustment...........................................................3-2
3-4. Head Voltage Adjustment ...........................................................................3-3
3-5. Initialization of Print Count History ...........................................................3-3
4. Circuit Operation Description
4-1. Video Circuit ...............................................................................................4-3
4-1-1. BNC Input Connector - Trap Filter Circuit ................................4-3
4-1-2. nC-SYNC Generator Circuit ......................................................4-3
4-1-3. AGC Circuit ...............................................................................4-3
4-1-4. Brightness and Contrast Control ................................................4-3
4-1-5. A/D Conversion and D/A Conversion .......................................4-3
4-2. Clock Generator Circuit ..............................................................................4-4
4-3. Memory and Head Control Circuit .............................................................4-4
4-3-1. Reading the Serial Data from System Control ...........................4-5
4-3-2. Writing in Frame Memory .........................................................4-5
4-3-3. Transfer from Frame Memory to Line Memory ........................4-5
4-3-4. Thermal Head Control and One-Line Memory.......................... 4-5