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CONTENTS
1. SPECIFICATIONS : QW-2174 / 2177
1. SPECIFICATIONS • • • • • • • • • • • • • • • • • • • • • • • • • • 1
2. OPERATION CHART • • • • • • • • • • • • • • • • • • • • • • • • 2
3. DRAWINGS • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6
3-1. BLOCK DIAGRAM • • • • • • • • • • • • • • • • • • • • • • • • 7
3-2. CHECKING TERMINALS AND COMPONENTS • • • • 9
4. EXPLODED VIEW • • • • • • • • • • • • • • • • • • • • • • • • • • 10
5. PARTS LIST • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 11
6. PRECAUTIONS FOR REPAIR • • • • • • • • • • • • • • • • • • 12
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE • • 12
6-2. ACCURACY CHECKING • • • • • • • • • • • • • • • • • • • 12
Function
QW-2174
• Shock resistant
• Electro-luminescent backlight
Afterglow
• World time
27 time zones (40 cities), city code display, daylight
saving on/off
• Memory function
Memory capacity: Up to 20 sets of data, each set
including; Name (8 characters) and telephone
number (12 digits)
• Day Countdown with 5 Memories Automatically
counts down the days from the current date to a
target date. A mark appears on the display to let you
know when a target date is reached.
• 1/100-second stopwatch
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time, split time,
1st-2nd place times
• Daily alarm
• Hourly time signal
• Auto-calendar (to year 2039)
• 12/24-hour formats
• Regular timekeeping: Hour, minutes, seconds,
am/pm, month, date, day
QW-2177
• Shock resistant
• Electro-luminescent backlight
Afterglow
• Memory function
Memory capacity: Up to 10 sets of data, each set
including; Name (8 characters) and telephone
number (12 digits)
• Day Countdown with 10 Memories Automatically
counts down the days from the current date to a
target date. A mark appears on the display to let you
know when a target date is reached.
• Countdown timer
Input range: 1 minute to60 minutes
Unit: 1 second
• Daily alarm
• Hourly time signal
• Auto-calendar (to year 2039)
• 12/24-hour formats
• Regular timekeeping: Hour, minutes, seconds,
am/pm, month, date, day, daylight saving on/off
Item
Detail
Item
Detail
Battery
CR1616
Accuracy
±
15sec./month
Battery life
Approx. 24 months
Accuracy setting system Trimmer capacitor
Current
QW-2174 0.815
µ
A maximum
Accuracy checking
See page 12
consumption QW-2177 1.46
µ
A maximum
Accuracy setting
+0.25~+0.35sec./day
Alarm system
Piezo plate on Back cover