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Table Of Contents - Hitachi VK-S274R Service Manual

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1-1 Cautions ................................................... 1-1
circuit board diagrams ........................... 1-2
1-2-4 Table for indexing locations of parts ....... 1-2
electrostatic damage ............................. 1-3
optical pickup ......................................... 1-3
1-4 Lead-Free Solder ...................................... 1-4
1-4-2 Solder for servicing ................................ 1-4
1-4-3 Soldering iron for servicing .................... 1-4
2 General Description ........................... 2-1
2-1 Overview .................................................. 2-1
2-1-1 Servicing method ................................... 2-1
2-2 Features ................................................... 2-1
2-3 Specifications ........................................... 2-2
3 Description of Operation ................... 3-1
3-1 Structure Schematics ............................... 3-1
(IC1201: Camera ┬ÁP) ............................. 3-2
4 Troubleshooting .................................. 4-1
4-1 Trouble Diagnosis ..................................... 4-1
4-1-1 Setting to service position...................... 4-1
4-1-2 Trouble diagnosis flowchart ................... 4-2
5-1 Order of Disassembly ............................... 5-1
5-2 Disassembly ............................................. 5-1
6 Adjustment .......................................... 6-1
6-1 Preparations for Adjustment ..................... 6-1
6-1-1 List of equipment and jigs ...................... 6-1
6-1-3 Connections for adjustment ................... 6-2

Table of Contents

6-1-4 Setting test equipment ........................... 6-3
6-2 List of Adjustment Items ........................... 6-5
6-2-2 Adjustment flowchart ............................. 6-6
6-3 Data Initialize ............................................ 6-7
6-4 Electronic Volume ..................................... 6-7
6-5-1 Auto iris control adjustment ................... 6-9
6-5-2 White balance adjustment ..................... 6-9
6-5-3 Chroma gain adjustment ....................... 6-10
6-6 Auto Focus ............................................... 6-11
6-6-2 AF noise level adjustment ...................... 6-12
6-6-3 Check of zoom/focus trace .................... 6-12
6-7 Spot Noise ................................................ 6-13
7-1 Exploded View .......................................... 7-1
7-2 Replacement Parts List ............................ 7-2
7-2-1 Mechanical parts list .............................. 7-2
7-2-2 Electrical parts list ................................. 7-2
Diagrams .................................................... 1
1 Wiring Diagram .............................................. 1
2 Schematic Diagrams ..................................... 2
2-1 Sensor [SP] Schematic Diagram ............... 2
2-2 Process [PC] Schematic Diagram
2-3 Process [PC] Schematic Diagram
2-4 Process [PC] Schematic Diagram
2-5 Switching Reg. [CSR] ................................ 6
3 Circuit Board Diagram ................................... 7
3-1 PC Circuit Board Diagram ......................... 7
3-2 SP Circuit Board Diagram .......................... 8
3-3 CSR Circuit Board Diagram ....................... 8
3-9 Identification Parts Location ....................... 9
4 Block Diagrams ............................................. 10
4-1 Overall Block Diagram ............................... 10
4-2 Power Block Diagram ................................ 11
replacing major ...................................... 6-5
(For Display) .............................................. 3
(For Printing) A-a ....................................... 4
(For Printing) A-b ....................................... 5

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Vk-k274rVk-s274erVk-k274er