Table Of Contents - Hitachi VM-H675LA Service Manual

CHAPTER 1 GENERAL INFORMATION
SPECIFICATIONS ..................................................... 1-1
COMPARISON OF FEATURES ................................ 1-2
COMPARISON OF MAIN CONTROL ICs ................. 1-3
JIGS AND TAPES FOR SERVICE ............................ 1-4
HOW TO USE THE EXTENSION CABLE AND JIG .. 1-5
SERVICE POSITION ................................................. 1-5
SERVICE MANUAL ABBREVIATION LIST ............... 1-6
EXTRACT FROM THE INSTRUCTION MANUAL ..... 1-8
Identifying Controls .............................................. 1-8
Fertures ................................................................ 1-9
Charging the Battery ............................................ 1-10
Items Selectable with Manu Displays .................. 1-11
Setting the Date and Time ................................... 1-11
General Maintenance ........................................... 1-12
CHAPTER 2 DISASSEMBLY
1. BEFORE STARTING DISASSEMBLY ................. 2-1
1.1 Disassembly Procedure ............................... 2-1
2. CASES AND CIRCUIT BOARDS REMOVAL ...... 2-2
2.1 Jack Cover, Front Cover Assembly,
Lens Cover, .................................................. 2-2
2.2 PSW Circuit Board, Microphone Unit,
DC Light, Front Cover .................................. 2-2
2.3 LCD Case-U, LCD Block, Cassette Lid,
Top Cover .................................................... 2-3
2.4 L-Case Assembly, R-Case Assembly .......... 2-4
2.5 Electronic Viewfinder (EVF) Assembly,
Speaker, CON Circuit Board, Fulcrum,
L-Case .......................................................... 2-5
2.6 Camera Chassis Assembly [Lens Frame,
Lens, SE Circuit Board, CCD Sensor],
VCR Chassis Assembly, Jack Unit, Rear
Cover, Power Terminal Unit ......................... 2-6
2.7 VCA Circuit Board, Mechanism Frame,
UH Mechanism ............................................. 2-7
2.8 Hand Strap, TW/PW Switch, R-Case ........... 2-7
2.9 LCD Circuit Board, Back light,
LCD Module, LCD Case-B ........................... 2-8
2.10 EVF Case-R, EVF Case-L, Eye Piece ......... 2-8
3. HOW TO OPERATE THE
MECHANISM MANUALLY ............................... 2-9
CHAPTER 3 ELECTRIC CIRCUIT
ADJUSTMENT
1. CONNECTION FOR ADJUSTMENT ................... 3-1
1.1 Before Starting Adjustment .......................... 3-1
2. CAMERA SECTION ADJUSTMENT .................... 3-2
2.1 Test Equipment Necessary for
Adjustment ................................................... 3-2
2.2 List of Charts for Camera Adjustment .......... 3-2
2.3 Adjustment Conditions ................................. 3-2
CONTENTS
2.4 Preset Positions of Switches and
Controls During Adjustment ......................... 3-2
2.5 Check After Replacing Major Components
in the Camera Section ................................. 3-3
2.6 Adjustment Procedure ................................. 3-3
2.6.1 Connections for Adjustment .................. 3-3
2.6.2 How to Start the MAP ............................ 3-4
2.6.3 Initial Setting by Model .......................... 3-4
2.6.4 Digital Adjustment Procedure ............... 3-5
(1) Auto Iris Control Adjustment ................. 3-5
(2) White Balance Adjustment .................... 3-5
(3) Chroma Gain Adjustment ...................... 3-6
2.6.5 Autofocus Adjustment Procedure ......... 3-7
(1) Zoom Trace Adjustment ........................ 3-7
(2) AF Noise Level Adjustment ................... 3-7
2.6.6 Stabilizer Adjustment Procedure ........... 3-8
2.6.7 Spot Noise Adjustment .......................... 3-8
2.7 Color LCD Monitor Adjustment .................... 3-9
2.7.1 Adjustment Procedure ........................... 3-9
(1) Flicker Adjustment ................................. 3-9
3. VCR SECTION ADJUSTMENT ........................... 3-10
3.1 Test Equipment and Alignment Tapes
Necessary for Adjustment ............................ 3-10
3.2 Adjustment Conditions ................................. 3-10
3.3 Preset Positions of Switches and
Controls During Adjustment ......................... 3-10
3.4 Check After Replacing Major Components
in the VCR Section ....................................... 3-10
3.5 System Control/Servo Circuits
Adjustment ................................................... 3-10
(1) Power Shut Off Level (ODC: Over
(2) Head Switching Point Adjustment ......... 3-11
4. ERROR MESSAGES ........................................... 3-12
4.1 Digital Adjustment ........................................ 3-12
4.2 Autofocus Adjustment .................................. 3-13
4.3 Stabilizer Adjustment ................................... 3-13
4.4 Spot Noise Adjustment ................................ 3-13
4.5 VCR Adjustment ........................................... 3-14
5. TROUBLESHOOTING OF AUTOFOCUS ........... 3-15
(1) No Zoom and Focus Operation .................... 3-15
(2) No Focus Lens Operation ............................ 3-17
(3) No Zoom Operation ..................................... 3-18
(4) No Autofocus Operation ............................... 3-19
(5) Subject is Greatly Out-of-Focus
When Zoomed ............................................. 3-21
CHAPTER 4
CABINET (1) .............................................................. 4-1
CABINET (2) .............................................................. 4-2
UH MECHANISM ....................................................... 4-3
ACCESSORIES ......................................................... 4-4
Discharge Control) Adjustment ............. 3-11
EXPLODED VIEW
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