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Description of the Citizen Quartz CAL C050 watch, featuring yacht sports functions.
Description of the Citizen Quartz CAL C070 watch, designed for racing with necessary information.
Description of the Citizen Quartz CAL C080 watch, combining pilot and world time functions.
Detailed technical specifications for the Citizen Quartz Caliber C050 watch module.
Detailed technical specifications for the Citizen Quartz Caliber C070 watch module.
Detailed technical specifications for the Citizen Quartz Caliber C080 watch module.
Identification and labeling of the parts of the CAL C050 watch.
Overview of digital section modes and indication changeover for CAL C050.
Procedure for setting time and calendar in the CAL C050 watch.
Instructions on how to set Alarm I for the CAL C050 watch.
Instructions on how to set Alarm II, including snooze, for the CAL C050 watch.
Explanation of the two types of racing timers (I and II) for the CAL C050 watch.
Detailed operation guide for Racing Timer I, focusing on automatic repeating function.
Detailed operation guide for Racing Timer II, focusing on automatic chronograph.
Instructions for operating the timer function on the CAL C050 watch.
Identification and labeling of the parts of the CAL C070 watch.
Procedure for setting the analog time on the CAL C070 watch.
Introduction to the digital section, covering time and racing modes for CAL C070.
Detailed operation of small modes within the Time Mode for CAL C070.
Instructions for setting and using the alarm function on the CAL C070 watch.
Guide on operating the stopwatch functions, including lap times for CAL C070.
Detailed operation of small modes within the Racing Mode for CAL C070.
How to measure and display race data like lap times and speeds for CAL C070.
Procedure to measure and indicate time differences between two racers on CAL C070.
Explanation of the goal operation for chronograph modes on the CAL C070 watch.
Summary diagram illustrating the operational flow within the racing mode of CAL C070.
Identification and labeling of the parts of the CAL C080 watch.
Procedure for setting the analog time on the CAL C080 watch.
Introduction to the digital section modes for CAL C080, including time, calendar, alarms, and zones.
How to change indications between modes like Time, Calendar, Alarm, and Stopwatch for CAL C080.
Guide to using the Zone Monitor mode for checking time differences and summer time settings.
Instructions for setting cities and summer time in the Zone Setting mode for CAL C080.
Operation of the Time Mode, displaying times for two cities (main and sub time) on CAL C080.
Procedure for setting and using Alarm I on the CAL C080 watch.
Instructions for setting the calendar for the main time on the CAL C080 watch.
Guide to operating the stopwatch function on the CAL C080 watch.
Introduction to the calculation functions available on the watch, including scales and marks.
Explanation of basic calculation functions like multiplication and division using the watch.
How to calculate flight distance using speed and time with the watch's function.
How to calculate the fuel consumption ratio using flight time and fuel consumed.
How to calculate the quantity of fuel consumed based on consumption ratio and flight time.
How to determine flight duration based on fuel consumption ratio and available fuel.
Exploded view diagram identifying all parts of the CAL C050, C070, C080 watch modules.
Essential precautions and handling instructions for disassembling and assembling the watch module.
Designations for different types of lubricants (A, V, F, CH-1) used during assembly.
Specific steps to take when replacing the power cell to avoid damaging the microcomputer IC.
Guidelines for correctly installing the circuit unit supporter, including hook and switch spring.
Instruction to confirm the caliber number printed on the unit of the electronic circuit.
Initial inspection points covering power cell voltage, output signals, LC display, and connections.
Procedure for inspecting the movement, circuit patterns, and push buttons for proper function.
Steps to check the alarm output, piezoelectric element, buzzer spring, and circuit for defects.
How to measure the resistance of the coil unit and expected normal values.
Inspection of train wheels for clearance, rotor for bust, and proper oiling.
Confirmation that dial-side components are not deformed and are properly lubricated.
How to measure and adjust the time rate using the trimmer capacitor.
Procedure to measure the module's current consumption and interpret the results.
Final checks on case cleanliness, back tightness, switch operation, and display segments.
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