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Shimadzu SPD-M20A - User Manual

Shimadzu SPD-M20A
108 pages
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228-30772N
PHOTODIODE ARRAY UV-Vis DETECTOR FOR
SHIMADZU HIGH PERFORMANCE LIQUID
CHROMATOGRAPH
SPD-M20A
SERVICE MANUAL
CAUTION
This service manual has been edited for those that have received service related
training.
Those that have not been trained, should not use this manual.
Analytical & Measuring Instruments Division

Table of Contents

Questions and Answers

Shimadzu SPD-M20A Specifications

General IconGeneral
Wavelength Accuracy±1 nm
Wavelength Repeatability±0.1 nm
Light SourceDeuterium lamp (D2 lamp)
Wavelength Range190 to 800 nm
Bandwidth8 nm
Cell Temperature ControlOptional

Summary

Introduction

Scope of the Service Manual

Details the scope and purpose of the service manual.

Disclaimer

States limitations regarding product modifications and part availability.

Revision History

Records changes and updates made to the service manual over time.

Safety Precautions

Warning and Caution Definitions

Explains the meaning and usage of Warning and CAUTION symbols.

Specifications

Performance Specifications

Details on wavelength range, resolution, noise level, and drift.

Flow Cell Specifications

Information on cell volume, path length, pressure, and materials.

Safety Features

Lists safety mechanisms like thermistors and leak sensors.

Detector Main Unit Specifications

Covers interface, dimensions, weight, operating conditions, and power voltage.

Operating Principles

Explanation of how the detector functions and its light path.

Optical System Description

Detailed breakdown of the optical components and their arrangement.

Part Names

External Appearance Reference

Directs user to the instruction manual for external appearance details.

Assembly and Disassembly of Parts

Internal Structure and Disassembly Method

Procedures for removing covers, ducts, and main frame components.

Front Panel Adjustment Procedure

Steps for adjusting the front panel hinge and alignment.

Sensor and Connector Disassembly

Instructions for removing leak sensors, microswitches, and thermistors.

Printed Circuit Board (PCB) Procedures

Details on handling PDA-CPU and PDA-POWER circuit boards.

Optical System Unit Procedures

Steps for removing the optical system unit and its internal parts.

Maintenance and Adjustments

Preparations and Precautions

Important safety and preparation steps before maintenance.

Setup and Initialization Checks

Procedures for initial setup, connection, and basic operational checks.

Optical Axis Adjustment

Detailed steps for adjusting optical components like mirrors and slits.

PDA Utility Service Menu Operations

How to access and use various functions within the PDA Utility.

Operation Checks

Performing checks for initialization, safety functions, and leak sensor.

Absorbance Calibration and Checks

Procedures for absorbance accuracy and linearity calibration.

Refractive Index Effect Measurement

Measuring and verifying the refractive index effect on the baseline.

Sample Injection and Variance Test

Performing tests for sample injection consistency and peak variation.

Version Upgrade Procedures

Methods for upgrading the instrument's firmware via LAN or RS-232C.

Fault Diagnosis and Corrective Action

Troubleshooting Guide

Identifying and resolving issues based on error messages and system behavior.

System Configuration and Parts List

Consumable Parts List

List of parts considered consumable during normal operation.

Maintenance Parts List

Comprehensive list of parts for maintenance and repair.

Mechanical Parts List

Listing of mechanical components used in the instrument.

Electrical System Parts List

Listing of electrical and electronic components.

Optional Accessories List

List of optional items available for the instrument.

Parts Table

SPD-M20 A Main Unit Parts Table

Detailed parts breakdown for the main SPD-M20A unit.

Optical Unit Parts Table

Parts list specifically for the optical unit assembly.

Control Unit Parts Table

Parts list for the control unit and its internal components.

Temperature Controlled Cell Assy Parts

Parts list for the temperature-controlled cell assembly.

Circuit Diagrams

Cable Diagram

Wiring diagram showing connections between major boards and components.

Power Board Diagram

Schematic detailing the power supply circuitry.

PDA-POWER Schematics

Detailed circuit schematics for the PDA power section.

PDA-CPU Schematics

Detailed circuit schematics for the PDA CPU section.

LED Circuit Diagram

Schematic illustrating the LED indicator circuitry.

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