CONTENTS
FLOW CHART FOR REPAIR OF MODULE WITHOUT MOVEMENT ............................ 1
FLOW CHART FOR REPAIR OF MODULE WITH MOVEMENT ................................... 2
FLOW CHART FOR REPAIR OF CASING PARTS ........................................................ 3
1. Circuit Explanation of Quartz Watches ............................................................... 4
1-1 Circuit Diagram .............................................................................................................. 4
1-2 Digital Quartz Watches .................................................................................................. 5
1-3 Analog Watches ............................................................................................................. 5
2. Measurement of Current Consumption (Oscillation Check) ............................. 6
3. Quality Evaluation and Replacement of Electronic Parts .................................. 8
3-1 Capacitors/Chip ............................................................................................................. 8
3-2 Transistors ..................................................................................................................... 9
3-3 Coils ............................................................................................................................... 9
3-4 Oscillators/Quartz .......................................................................................................... 9
4. Accuracy Setting Method for Casio Watches ................................................... 10
4-1 Accuracy Setting by Capacitor/Trimmer ...................................................................... 10
4-2 Accuracy Setting by Pad Selection .............................................................................. 11
4-3 Digital Tuning (Pattern Cutting) Method ...................................................................... 11
5. LCD Replacement ................................................................................................ 12
Definition of Ranks B:
<Digital>
Ranks B refers to the level at which technical skills and tools are possessed that enable
evaluation of the quality of all parts at the individual part level, replace or adjust those parts
and perform waterproof inspections, excluding watches equipped with a sensor and the
Professional Diver’s Watches.
<Analog>
Ranks B refers to the level at which technical skills and tools are possessed that enable
evaluation of the quality of all parts at the individual part level, replace or adjust those parts
and perform waterproof inspections, excluding the train wheel unit.
Definition of Ranks A:
Ranks A refers to the level at which technical skills and tools are possessed that enable
evaluation of the quality of all parts of all watches at the individual part level, replace or adjust
those parts and perform waterproof inspections, excluding the Professional Diver’s Watches.
BASIC REPAIR MANUAL
(Ranks A and B)