MODULE NO.
R
REF. NO. S/M-541
SEPTEMBER 1996
QW-1498
DB-2000D
SERVICE MANUAL
& PARTS LIST
(WITHOUT PRICE)
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CONTENTS
1. SPECIFICATIONS ......................................................................................... 1
2. OPERATION CHART: MODULE QW-1498 ................................................... 2
3. DRAWINGS: MODULE QW-1498 .................................................................. 8
3-1. BLOCK DIAGRAM ............................................................................................. 8
3-2. CHECKING TERMINALS AND COMPONENTS ............................................... 9
4. EXPLODED VIEW: MODULE QW-1498 ...................................................... 10
5. PARTS LIST: MODULE QW-1498 ............................................................... 11
6. PRECAUTIONS FOR REPAIR: MODULE QW-1498 .................................. 12
6-1. BATTERY REPLACEMENT ............................................................................ 12
6-2. AC (ALL CLEAR) ............................................................................................. 12
6-3. ON CLOSING THE BACK COVER ................................................................. 12
6-4. ACCURACY CHECKING ................................................................................. 13
Item
Detail
Battery
CR2016
Battery life
Approx. 2 years
Current consumption
3.10
µA maximum
Alarm system
Piezo plate on back cover
Accuracy
±15sec./month
Accuracy setting system
Trimmer capacitor
Accuracy checking
See page 7
Accuracy setting
+0.25 ~ +0.35 sec./day
Functions
· Electro-luminescent backlight
· Telememo
200 data items, each with 8-character name and 12-digit number
Business:
Private: name, numbers (two numbers, 4 types), memo
Play: name, numbers (two numbers, 4 types), memo
Personal: preset types (13 built in) title, two numbers
Other:
· 1/100 sec. stopwatch
Measuring capacity: 23:59'59.99"
Measuring mode: Net time, split time, 1st-2nd place times
· Countdown alarm
Input range: 1 min. to 24 hr.
Unit: 1 sec.
Auto-repeat function
· Regular timekeeping
Hr, min, sec, pm, yr, mo, date, day
· Auto-calendar (pre-programmed until the year 2039)
· 5 multi-function alarms
· Hourly time signals
· 12/24-hour formats
company name, main telephone number, name,
numbers (two numbers, 4 types), memo
Auto sort function, index search (Private and Play modes),
secret function, (Personal mode)
1. SPECIFICATIONS
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2. OPERATION CHART: MODULE QW-1498
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