SERVICE MANUAL
& PARTS LIST
(WITHOUT PRICE)
QW-1851
MODULE NO.
R
REF. NO. S/M-588
FEBRUARY 1998
BGM-100PF
INDEX
CONTENTS
Page
1. SPECIFICATIONS: QW-1851 ..................................................................... 1
2. OPERATION CHART:QW-1851 ................................................................. 2
3. DRAWINGS ................................................................................................. 3
3-1. BLOCK DIAGRAMS: QW-1851 ....................................................................
3
3-2. CHECKING TERMINALS AND COMPONENTS: QW-1851 .........................
4
4. EXPLODED VIEW: QW-1851 ..................................................................... 5
5. PARTS LIST: QW-1851 .............................................................................. 6
6. PRECAUTIONS FOR REPAIR: QW-1851 ................................................. 7
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ......................................
7
6-2. ACCURACY CHECKING ..............................................................................
7
-- 1 --
1. SPECIFICATIONS: QW-1851
Battery
SR621W (for EL), SR1120W (for watch)
Battery life
Approx. 15 months
Current consumption
4.8 µA maximum
Alarm system
Piezo plate on Back cover
Accuracy
±15 sec./month
Accuracy setting system
Trimmer capacitor
Accuracy checking
See page 7
Accuracy setting
±0.25~0.35 sec./day
Functions
· Shock resistant
· Electro-luminescent backlight
· 1/100 sec. stopwatch
Measuring capacity: 23:59'59.99"
Measuring mode: Net time, split time, 1st-2nd place times
· Regular timekeeping: Hr, min, sec, am/pm, month, date day
· Auto-calendar (pre-programmed until the year 2039)
· Musical alarm (3 melodies and beep)
· Hourly time signals
· 12/24-hour formats
Item
Detail
-- 2 --
2. OPERATION CHART: QW-1851
A
C
D
B
E
GENERAL GUIDE
· The configuration of this watch may differ somewhat from that shown in the illustration.
· Press C to change from mode to mode.
· In any mode, press D to illuminate the display for about two seconds.
· The animated figures perform a variety of different actions, depending on the mode the watch is in.
Timekeeping Mode
Alarm Mode
Stopwatch Mode
TIMEKEEPING MODE
· Use E to switch the display between month/date
and date/day of the week.
· Press B to play a melody for about 10 seconds.
Pressing any key while a melody is play stops the
melody. The melody that plays depends on when
you press B.
A
C
D
B
E
Date
PM
indicator
Hour
Minutes
Seconds
Day of the week
To set the time and date
1. Hold down A while in the Timekeeping Mode. The seconds digits flash on the
display because they are selected.
2. Press C to change the selection in the following sequence.
3. While the seconds digits are selected (flashing), press E to reset the seconds to
"00". If you press E while the seconds count is in the range of 30 to 59, it is reset
to "00" and 1 is added to the minutes. If the seconds count is in the range of 00 to
29, the minutes count is unchanged.
4. While any other digits (besides seconds), are selected (flashing), press E to in-
crease the number or B to decrease it. Holding down either button changes the
current selection at high speed.
· While the day of the week is selected, pressing E advances to the next day, while
pressing B returns to the previous day.
· While the 12/24-hour setting is selected, press E to switch between the two for-
mats.
5. After you set the time and date, press A to return to the Timekeeping Mode.
· The date can be set within the range of January 1, 1995 to December 31, 2039.
· If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Timekeeping Mode automatically.
ABOUT THE BACKLIGHT
· Pressing D at any time illuminates the display for about two seconds and causes
an animated figure to appear. The type of animation that appears depends upon
when you press D.
· The backlight of this watch employs an electro-luminescent (EL) light, which loses
its illuminating power after very long term use.
· The watch will emit an audible sound whenever the display is illuminated. This is
caused by a transistor that vibrates when the EL panel lights up. It does not indicate
malfunction of the watch.
ALARM MODE
This watch include three built-in melodies, which you
can use in any of the following five settings to sound
when an alarm time is reached.
· When the Daily Alarm is switched on, the alarm sounds for about 20 seconds at the
preset time each day. Press any button to stop the alarm after it starts to sound.
When the Hourly Time Signal is switched on, the watch beeps every hour on the
hour.
To set the alarm time
1. Hold down A while in the Alarm Mode. The hour digits flash on the display be-
cause they are selected.
· At this time the Daily Alarm is switched on automatically.
2. Press C to change the selection in the following sequence.
3. Press E to increase the selected digits and B to decrease them. Holding down
either button changes the selection at high speed.
· The format (12-hour and 24-hour) of the alarm time matches the format you select
for normal timekeeping.
· When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning or afternoon.
4. After you set the alarm time, press A to return to the Alarm Mode.
· If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Alarm Mode automatically.
· If you do not operate any button for a few minutes in the Alarm Mode, the watch
goes back to the Timekeeping Mode automatically.
To switch the Daily Alarm and Hourly Time Signal on and off
Press E while in the Alarm Mode to change the status of the Daily Alarm and Hourly
Time Signal in the following sequence.
ALM : Daily Alarm
SIG : Hourly Time Signal
Alarm Precautions
The following are the initial default settings of this watch. These settings are in
effect when you purchase the watch, and they also are set automatically when-
ever the watch's battery is replaced.
Alarm = ON
Alarm Time = PM 7:00
Alarm Sound = Melody 1 (The night is still young)
· Use the procedure under
"To switch the Daily Alarm and Hourly Time
Signal on and off" to turn off the alarm.
To test the Alarm
Pressing B sounds the currently selected alarm sound.
It takes about 10 seconds for the alarm sound to finish. You can stop it manually by
pressing any key.
· Note that if 0 is set as the alarm sound, pressing B randomly selects one of the
melodies. The sound that is randomly selected when the next alarm time is reached
will probably be different from the one that sounds when you press B.
STOPWATCH MODE
The Stopwatch Mode lets you measure elapsed time,
split times, and two finishes. The range of the stop-
watch is 23 hours, 59 minutes, 59.99 seconds.
· Animated figures appear on the display while the
stopwatch is measuring an elapsed time.
· If you do not perform any key operation while in
the Stopwatch Mode, the watch automatically re-
turns to the Timekeeping Mode (except when an
elapsed time measurement is in progress.
To measure elapsed time
1.Press E to start the stopwatch.
2.Press E to stop the stopwatch.
· You can resume the measurement operation by
pressing E again.
3.Press B to clear the stopwatch to all zeros
(0H00'00"00).
To record split times
1. Press E to start the stopwatch.
2. Press B to display the timing up to that point. Stopwatch timing continues internal-
ly.
3. Press B to clear the split time and to continue time measurement on the display.
· You can repeat steps 2 and 3 as many times as you want.
4. Press E to stop the time measurement.
5. Press B to clear the stopwatch to all zeros.
To time first and second place finishes
1. Press E to start the stopwatch.
2. Press B when the first finisher crosses the line, and record the time.
3. Press E when the seconds finisher corsses the line.
4. Press B to display the finishing time of the second finisher.
5. Press B to clear the stopwatch to all zeros.
MELODY LIST
A
C
D
B
E
Hours
Mode indicator
Minutes
Seconds
1/100 seocnds
A
C
D
B
E
Alarm on
indicator
Hourly time
signal on
indicator
Current
time
Mode
indicator
Hour
Minutes
Setting
Alarm Sound
0.
Random play of melodies 1, 2, and 3
1.
Melody 1
2.
Melody 2
3.
Melody 3
4.
Beeper
Both OFF
Daily Alarm
Hourly Time
Both ON
only
Hour
Minutes
Year
1
The night is still young
2
Baby portable rock
3
The new song
T-9790186
Seconds
Hour
Minutes
Year
12/24-Hour
Day of
Date
Month
Format
the week
Signal only
-- 3 --
3. DRAWINGS
3-1. BLOCK DIAGRAMS: QW-1851
3C3
46C3
SEG58
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM4
COM3
COM2
COM1
SEG59
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48
SEG49
SEG50
SEG51
SEG52
SEG53
SEG54
SEG55
SEG56
SEG57
SEG45
SEG44
SEG43
SEG7
SEG6
SEG5
SEG4
SEG51
SEG52
SEG53
SEG54
SEG55
SEG56
SEG57
COM4
COM3
COM2
COM1
COM1
COM4
COM3
42C3
47C4
48C3
47C1
47C3
47C2
48C4
48C2
49C1
50C2
49C2
50C3
49C3
49C4
50C4
2C4
2C2
1C1
1C3
1C2
2C3
2C1
59C1
0C2
59C2
0C3
59C3
59C4
0C4
58C3
58C2
58C4
1C4
11C4
11C1
10C2
10C4
9C1
9C4
8C2
8C4
10C3
10C1
11C2
8C3
8C1
9C2
13C2
12C2
13C1
12C1
12C4
13C4
12C3
39C2
16C4
16C1
40C1
39C1
39C4
40C4
39C3
40C3
42C1
40C2
42C2
41C2
41C1
41C4
41C3
42C4
15C2
14C2
15C1
14C1
15C4
14C3
14C4
+
C1
C3
C7
C2
C4
C5
BAT1
BAT2
VSS2
VSSL
VSS1
VSS3 C1
C2
VDD
OSC0
OSC1B
TST3
R1
R3
V
PZ
LL1
R2
C8
TST2
TST1
COM1
COM4
SEG0
SEG59
P2.0
P2.1
P2.2
P6.0
P6.1
RESET
S4
S1
F0
S2
S3
P4.0
MD0
LSI
TOTAL
BONDING
99PINS
84PINS
LCD
CT
Xtal
Tr1
Tr2
VCCE
RT1
RT2
VCPE
GND
ENB
CIL
LL2
Di
EL
INV
ELD