Table of Contents
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2.3.1 Introduction ........................................................................................................................................ 2-12
2.3.2 Block diagram..................................................................................................................................... 2-13
2.3.3 MCU and the Peripheral Circuit Operation Theory............................................................................ 2-13
3. ALIGNMENT PROCEDURE ............................................................................................................................................. 3-1
3.1 Preparation for Alignment ................................................................................................................................... 3-1
3.2 BAdjustment........................................................................................................................................................ 3-1
3.3 HV Adjustment.................................................................................................................................................... 3-1
3.4 H-center Adjustment............................................................................................................................................ 3-1
3.5 H-size Preset ........................................................................................................................................................ 3-1
3.6 Factory Setting Mode Adjustment....................................................................................................................... 3-1
3.7 Focus Adjustment ................................................................................................................................................ 3-2
3.8 Convergence Adjustment..................................................................................................................................... 3-2
3.9 Color Temperature Auto Aalignment .................................................................................................................. 3-2
3.9.1 Preparing Items................................................................................................................................... 3-2
3.9.2 Alignment Procedure.......................................................................................................................... 3-2
3.9.3 Clear All of User Mode Data.............................................................................................................. 3-2
3.10 Geometry Specification ..................................................................................................................................... 3-2
3.11 Power Saving Function Check........................................................................................................................... 3-3
4. TROUBLESHOOTING ...................................................................................................................................................... 4-1
4.1 Check MCU and OSD for No Video Output ....................................................................................................... 4-1
4.2 Check OSD, MCU for No OSD Window............................................................................................................ 4-2
4.3 Video Board......................................................................................................................................................... 4-2
4.4 No Output Power ................................................................................................................................................. 4-3
4.5 No Raster ............................................................................................................................................................. 4-4
4.6 H.V. Abnormal .................................................................................................................................................... 4-4
4.7 Check IC201 ........................................................................................................................................................ 4-5
4.8 No Vertical Output and Retrace Line No Blanking............................................................................................. 4-6
4.9 Spot Killer NG..................................................................................................................................................... 4-6
4.10 Focus NG........................................................................................................................................................... 4-7
4.11 Horizontal Size Can Not Control....................................................................................................................... 4-7
4.12 Size Regulation NG ........................................................................................................................................... 4-8
4.13 Unstable Vertical Display.................................................................................................................................. 4-8
4.14 No Blanking....................................................................................................................................................... 4-9
Appendix A.............................................................................................................................................................................. A-10
7277E Spare Parts List............................................................................................................................................... A-10
Important Service Instruction ...................................................................................................................... A-11
Table of Contents
2.3.3.1 MCU Function................................................................................................................... 2-13
2.3.3.2 How to Detect Mode Timing............................................................................................. 2-13
2.3.3.3 Hat are the Valid Key Functions for User ......................................................................... 2-14
2.3.3.4 How to Memorize the Timing and Adjusted Data............................................................. 2-14
2.3.3.5 How to Display the OSD Menu......................................................................................... 2-14
2.3.3.6 How to Execute the Auto Alignment Function.................................................................. 2-14
2.3.3.7 Flowchart for Auto Calibration ......................................................................................... 2-15
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