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1. SPECIFICATIONS: QW-2424
Battery CR1620
Battery life Approx. 3 years
Current consumption 1.19 µA maximum
Alarm system Piezo plate on Back cover
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 8
Functions • Shock resistant
• Multi Illuminator (Multi-color LED backlight)
Afterglow
• 1/100-second stopwatch
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
Other: Auto-start
• Daily alarm
• Hourly time signal
• Auto-calendar (to year 2039)
• 12/24-hour formats
• Regular timekeeping: Hr, min, sec, am/pm, month, date, day, daylight
saving on/off
Item Detail
CONTENTS
Page
1. SPECIFICATIONS: QW-2424..................................................................... 1
2. OPERATION CHART: QW-2424 ................................................................ 2
3. DRAWINGS: QW-2424
3-1. LCD DIAGRAM ................................................................................... 3
3-2. CIRCUIT DIAGRAM ............................................................................ 4
3-3. CHECKING TERMINALS AND COMPONENT .................................. 5
4. EXPLODED VIEW: QW-2424 ..................................................................... 6
5. PARTS LIST: QW-2424 .............................................................................. 7
6. PRECAUTIONS FOR REPAIR: QW-2424
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE............................ 8
6-2. ACCURACY CHECKING .................................................................... 8