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Citizen Quartz 7872 User Manual

Citizen Quartz 7872
27 pages
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Citizen Quartz 7872 Specifications

General IconGeneral
BrandCitizen
ModelQuartz 7872
CategoryWatch
LanguageEnglish

Summary

§1. OUTLINE

§2. SPECIFICATIONS

§3. FEATURES

1) Quick start feature

Explains the 2-second operation when light is applied to a stopped watch.

2) Time setting indication feature

Describes the irregular second hand movement to indicate incorrect time.

3) Insufficient recharging warning feature

Details the 2-second second hand movement when the battery is low.

4) Overcharging prevention feature

Explains how the IC stops charging when the battery is fully charged.

§4. HANDLING

§5. PRECAUTIONS FOR DISASSEMBLY AND ASSEMBLY

1) Handling of solar cell

Precautions for handling the solar cell to avoid damage and ensure continuity.

2) Replacing secondary battery (CAL. 782,787)

Guidelines for replacing secondary batteries, emphasizing correct types.

3) Handling of capacitor (CAL 781, 786)

Warnings about installing batteries with capacitors to prevent explosion.

4) Removal and installation of setting stem

Instructions for removing and installing the setting stem for different case structures.

§6. DISASSEMBLY AND ASSEMBLY OF MODULE

§7. TROUBLESHOOTING AND ADJUSTMENT METHOD

1 Measurement of secondary battery or capacitor voltage

Measures the voltage of the secondary battery or capacitor.

2 Confirmation of output signal

Confirms the output signal from the electronic circuit.

3 Check of connection parts

Inspects connection parts for issues like looseness, dirt, or damage.

4 Measurement of coil resistance

Measures the resistance of the coil.

5 Check of train wheel

Inspects the train wheel mechanism.

6 Check of dial side mechanism

Inspects the mechanism on the dial side.

7 Check of solar cell

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

8 Measurement of current consumption

Measures the current consumption of the module.

9 Measurement of time

Measures the timekeeping accuracy of the watch.

10 Confirmation of using condition

Confirms the watch's operating condition and environment.

11 Inspection of outside and functions

Inspects the watch's exterior and overall functions.

§1. DESCRIPCIÓN GENERAL

§2. ESPECIFICACIONES

§3. CARACTERÍSTICAS

1) Función de inicio rápido

Explains the 2-second operation when light is applied to a stopped watch.

2) Función de indicación de ajuste de la hora

Describes the irregular second hand movement to indicate incorrect time.

3) Función de indicación de ajuste de la hora

Details the 2-second second hand movement when the battery is low.

4) Función de prevención de sobrecarga

Explains how the IC stops charging when the battery is fully charged.

§4. MANEJO

§5. PRECAUCIONES DE DESMONTAJE Y MONTAJE

1) Manejo de la célula solar

Precautions for handling the solar cell to avoid damage and ensure continuity.

2) Reemplazo de la batería secundaria (CAL. 782,787)

Guidelines for replacing secondary batteries, emphasizing correct types.

3) Manejo del capacitor (CAL 781, 786)

Warnings about installing batteries with capacitors to prevent explosion.

4) Extracción e instalación del vástago de ajuste

Instructions for removing and installing the setting stem for different case structures.

§6. DESMONTAJE Y MONTAJE DEL MÓDULO

§7. MÉTODO DE INSPECCIÓN Y DE AJUSTE DEL MÓDULO

1 Medición de la tensión de la batería secundaria y del capacitor

Measures the voltage of the secondary battery or capacitor.

2 Confirmación de la señal de salida

Confirms the output signal from the electronic circuit.

3 Inspección de las piezas de conexión

Inspects connection parts for issues like looseness, dirt, or damage.

4 Medición de la resistencia de la bobina

Measures the resistance of the coil.

5 Inspección del tren de rodaje

Inspects the train wheel mechanism.

6 Inspección del mecanismo del lado de la esfera

Inspects the mechanism on the dial side.

7 Inspección de la célula solar

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

8 Medición del consumo de corriente

Measures the current consumption of the module.

9 Medición de tiempo

Measures the timekeeping accuracy of the watch.

10 Confirmación de las condiciones de utilización

Confirms the watch's operating condition and environment.

11 Inspección del exterior y de las funciones

Inspects the watch's exterior and overall functions.

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