Nidek Medical CP-690 User Manual

MCP7**RDA001B/E
Total Page 70
2006.7
NIDEK
AUTOMATIC CHART PROJECTOR
Model CP-690
SERVICE MANUAL

Nidek Medical CP-690 Specifications

General

Brand	Nidek Medical
Model	CP-690
Category	Projector
Language	English

Summary

§1 INTRODUCTION

§2 CAUTIONS

Before service

Safety precautions to take before performing servicing.

During service

Safety precautions to take while performing servicing.

§3 TROUBLESHOOTING

§4 SUB TROUBLESHOOTING

4.1 The Initialization does not Start

Troubleshooting steps for when the initialization process fails to begin.

4.2 The Motor does not Work

Steps to diagnose and resolve issues with the chart or mask motors not functioning.

4.3 The Motors do not Stop

Troubleshooting guide for when the chart and mask motors fail to stop correctly.

4.4 The Projection Lamp does not Go On

Procedures to follow if the projector lamp fails to illuminate.

4.5 The Chart Image is Partly Blocked

Steps to fix issues where the projected chart image is obstructed.

4.6 The Chart Brightness is Unsuitable

Guide to address problems with incorrect chart brightness levels.

4.7 The Chart Brightness is Uneven

Steps to resolve uneven brightness across the projected chart.

4.8 The Chart Image is not Clear

Troubleshooting procedures for a blurry or unclear projected chart image.

4.9 The Chart Image does not Change as Operated by the Remote Control

Steps to diagnose why the projected chart fails to change via remote control.

4.10 The Polarized Chart does not Disappear

Guide to troubleshoot when the polarized chart image does not vanish as expected.

4.11 The LED does not Go On

Troubleshooting steps for when the unit's LED indicator fails to illuminate.

§5 REPLACEMENT

5.1 How to Remove the Covers

Instructions for safely removing the external covers of the projector.

5.2 Replacement of the Circuit Boards

5.2.1 Replacement of the BA01 board

Detailed steps for replacing the main BA01 circuit board.

5.2.2 Replacement of the BA02 board

Procedure for replacing the BA02 IR board.

5.2.3 Replacement of the BA14 board

Steps for replacing the BA14 resistor board.

5.3 Replacement of the Sensors

5.3.1 Replacement of the chart sensor

Guide for replacing the chart sensor component.

5.3.2 Replacement of the mask sensor

Procedure for replacing the mask sensor component.

5.4 Replacement of the Chart Motor

5.5 Replacement of the Chart ASSY

5.6 Replacement of the Mask Motor and Mask ASSY

5.7 Replacement of the Bottom Cover ASSY (Power LED)

5.8 Replacement of the Power Switch

5.9 Replacement of the Power Transformer

5.10 Replacement of the LED ASSY/C lens ASSY

5.11 Replacement of the Holder ASSY

5.12 Replacement of the Fuses

5.13 Cleaning

5.13.1 Cleaning of the chart and mask

Steps for cleaning the chart and mask components.

5.13.2 Cleaning of the condenser lens

Instructions for cleaning the condenser lens.

5.13.3 Cleaning of the holder ASSY

Procedure for cleaning the holder assembly.

§6 ADJUSTMENT

6.1 Adjustment of the Initialized Position

Steps to adjust the initial position of the projector's components.

6.2 Adjustment of the Sensor Voltage

6.3 Adjustment of the Lamp (LED) Position

6.4 Adjustment of the Fixed Mask Position

6.5 Adjustment of the Chart and Mask Positions

6.6 Setting

6.6.1 Setting of the voltage selector

Instructions for setting the voltage selector on the instrument.

6.6.2 To display or not display the visual acuity

How to configure the display of visual acuity information.

6.6.3 Selecting the amount of chart light

Steps to select and adjust the chart illumination brightness.

6.6.4 Setting of the beep sound volume (Response sound)

Procedure for setting the volume of the unit's beep sound.

6.6.5 Setting of the DIP switch

Guide to configuring the DIP switch settings for various functions.

Setting when using several units (Switch code setting)

How to set switch codes when using multiple CP-690 units together.

§7 INFORMATION

7.1 Wiring Diagram

Schematic diagram illustrating the internal wiring of the projector.

7.2 How to Carry Out the Wiring

Instructions and visual guide on how to correctly perform wiring tasks.

§9 TOOLS AND MEASURING DEVICES

Tools and measuring devices

List of essential tools and measuring devices required for servicing.

Others

List of other necessary consumables and materials for maintenance.