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Citizen Quartz 7870 User Manual

Citizen Quartz 7870
27 pages
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Citizen Quartz 7870 Specifications

General IconGeneral
BrandCitizen
ModelQuartz 7870
CategoryWatch
LanguageEnglish

Summary

Introduction and Specifications

Outline of Solar Power Watch

Describes the analog solar power watch that converts optical energy into electric energy.

Technical Specifications Overview

Details specifications like module size, accuracy, oscillation, operating temperature, and secondary battery usage.

Watch Features and Handling

Key Watch Features Explained

Explains quick start, time setting indication, insufficient recharging warning, and overcharging prevention.

General Watch Handling Instructions

Provides guidance on handling the watch, similar to a common analog watch, emphasizing light exposure.

Disassembly and Assembly Precautions

Solar Cell Handling Precautions

Instructions for careful handling of the solar cell to prevent damage and maintain performance.

Secondary Battery Replacement Guidelines

Guidelines for replacing secondary batteries in specific calibers, emphasizing designated types.

Capacitor Handling Precautions

Precautions for handling capacitors, especially regarding over-charging and installation.

Setting Stem Removal and Installation

Procedures for removing and installing the setting stem for different case back structures.

Module Disassembly and Assembly Procedures

Troubleshooting and Adjustment Method

Measurement of Secondary Battery or Capacitor Voltage

Procedure to measure the voltage of the secondary battery or capacitor for diagnostic purposes.

Confirmation of Output Signal

Checks the output signal from the watch's electronic circuit for proper operation.

Inspection of Connection Parts

Examines connection parts for looseness, stains, or detachment to identify faults.

Measurement of Coil Resistance

Measures the resistance of the coil unit to check its integrity.

Inspection of Train Wheel

Inspects the train wheel mechanism for proper function and alignment.

Inspection of Dial Side Mechanism

Examines the dial side mechanism for any operational issues or damage.

Inspection of Solar Cell

Checks the solar cell for breakage, stains, or electrode issues.

Measurement of Current Consumption

Details how to measure current consumption of the module and electronic circuit unit.

Time Measurement

Covers measuring the watch's timekeeping accuracy and rate.

Confirmation of Using Condition

Confirms the watch's operational status under various environmental conditions.

Inspection of Outside and Functions

Inspects the external appearance and overall functions of the watch.

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