Canon PowerShot S400, Digital IXUS 400 Service Manual

Application

This manual has been issued by Canon Inc. for qualified persons to learn technical theory, and repair of the products.

Corrections

This manual could include typographical errors or technical inaccuracies due to improvements or changes in the products. When changes occur in applicable products or in the content of this manual, Canon will release service manual report as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon may issue new editions of this manual.

The following paragraph does not apply to any countries where such provisions are inconsistent with local law.

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SAFETY PRECAUTIONS

The following precautions should be observed when servicing.

1. Since many parts in the unit have special safety-related characteristics, always use genuine CANON replacement parts. Especially critical parts in the power circuit block should not be replaced with other makes. Critical parts are marked with ! in the schematic diagrams.

2. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

3. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

4. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards. 4-1 Leakage Current Cold Check

1) Unplug the AC cord and connect a jumper between the two prongs on the plug.

2) Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MΩ and 5.2MΩ. When the exposed metal does not have a return path to the chassis, the reading must be ∞.

4-2 Leakage Current Hot Check

1) Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2) Connect a 1.5KΩ 10 watt resistor, paralleled by 0.15µF capacitor, between each exposed metallic parts on the unit and a good earth ground such as a water pipe, as shown in the figure below.

3) Use an AC voltmeter, with 1000Ω/volt or more sensitivity, to measure the potential across the resistor.

4) Check all exposed metallic parts of the cover (Cable connection, Handle bracket, metallic cabinet. Screwheads, Metallic overlays, etc), and measure the voltage at each point.

5) Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6) The potential at any point should not exceed 0.75V RMS. A leakage current tester (FLUKE MODEL : 8000A equivalent) may be used to make the hot checks. Leakage current must not exceed 0.5 milliamp. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and corrective action must be taken before returning the instrument to the customer.

AC OUTLET

DEVICE UNDER TEST

AC VOLTMETER

Test all exposed metal parts

Figure. 1 Leakage Current Hot Check

1.5KΩ

0.15µF Water pipe

(Earth Ground)

CHAPTER 1. GENERAL DESCRIPTION

OF PRODUCT

CONTENTS

1 Development Background

1-1 Development Objectives ---------------------------------------------------------------------------------------------------- 1-1 1-2 Product Concept -------------------------------------------------------------------------------------------------------------- 1-1 1-3 Design Concept --------------------------------------------------------------------------------------------------------------- 1-5 1-4 IXY DIGITAL 400 and IXY DIGITAL 320 Specifications Comparison -------------------------------------------- 1-6

2 Features

2-1 High Quality Design / Ultra Compact ------------------------------------------------------------------------------------- 1-8 2-2 Full Features/Ease of Operation -------------------------------------------------------------------------------------------- 1-9 2-3 High Image Quality -------------------------------------------------------------------------------------------------------- 1-13 2-4 System accessories ----------------------------------------------------------------------------------------------------------1-14

3 Exterior

3-1 Exterior photos---------------------------------------------------------------------------------------------------------------1-15 3-2 6-dimentional diagram------------------------------------------------------------------------------------------------------1-16 3-3 Nomenclature ----------------------------------------------------------------------------------------------------------------1-17 3-4 UI Information ---------------------------------------------------------------------------------------------------------------1-18

4 Specifications

4-1 Camera Specifications ------------------------------------------------------------------------------------------------------1-22 4-2 Functions’ availability and data’s memory in each shooting mode --------------------------------------------------1-29 4-3 Replay compatibility --------------------------------------------------------------------------------------------------------1-31

5 System

5-1 Accessories’ compatibility -------------------------------------------------------------------------------------------------1-32 5-2 System diagram--------------------------------------------------------------------------------------------------------------1-34

* The “IXY DIGITAL 400” Product designation used in this document refers to the IXY DIGITAL 400, The

DIGITAL IXUS 400 and PowerShot S400 DIGITAL ELPH designations are used in various marketing areas.