Ikegami LH-780 Broadcast Camera Service Manual – PDF Download

Description

Ikegami LH-780 Broadcast Camera Service Manual – PDF Download

Description

This is the factory service manual for the Ikegami LH-780 broadcast camera system, used in studio, OB van, digital production, and live field acquisition work.

It provides deep technical service coverage, including:

• Optical path and prism block alignment

• Camera head signal processing & CCD system theory

• Full board replacement, testing, and voltage adjustment points

• Waveform reference & shading correction procedures

• Menu engineering settings and diagnostics

• Mechanical teardown, cable routing, and connector pinouts

This manual is required for:

• Broadcast engineers

• Field maintenance technicians

• Camera repair workshops

• Video production companies maintaining Ikegami fleet cameras

TABLE OF CONTENTS 

1. Product Overview

• System Description & Model Variants

• Features and Image Processing Concept

• Block Diagram & Signal Flow Overview

• Default Specifications and Interfaces

2. Safety and Handling

• High-Voltage and CCD Handling Precautions

• Optical Path Cleanliness Requirements

• Static Discharge & PCB Protection

• Connector Access and Cable Retention

3. Disassembly & Reassembly

• Exterior Housing Removal

• Camera Head & Chassis Disassembly

• Viewfinder Mount & Monitor Unit

• Lens Mount & Optical Front Assembly

• Internal Cable Routing Guide

• Reassembly & Torque Requirements

4. Optical / CCD System

• Prism Assembly Structure

• CCD Block Identification & Replacement

• Back Focus Calibration

• Flange Focal Adjustment

• Shading & White Accuracy Adjustment

5. Electronic Control System

• Power Supply System Layout

• Camera Control Unit (CCU) Interfacing

• DC-DC Conversion Sections

• Reference Clock & Sync Generator

• Sub-Boards: DSP, A/D Front-End, Encoder, VF Driver

6. Adjustment Procedures

• White Balance & Black Balance

• Gamma & Knee Setup

• Matrix / Detail / Aperture / Skin DTL Control

• VF Brightness, Contrast & Focus Marks

• Menu Engineering Access Parameters

7. Diagnostics & Troubleshooting

• Status Codes & LED Indicators

• Standard Waveform Reference Patterns

• Oscilloscope Check Points

• Symptom-Based Fault Table

• Video / VF / Encoder Failure Isolation

8. Wiring & Schematics

• Complete Board-Level Schematics

• Connector Pin Assignments

• Cable Harness Overview

• Power Distribution Chart

9. Parts & Assemblies

• Exploded Mechanical Diagrams

• Replacement Part Numbers

• Fastener, Seal & Spacer Index

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