Casio BGX-180V series Troubleshooting guide

(WITHOUT PRICE)
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-724
DECEMBER 2000
QW-2209
MODULE NO.
R
BGX-180V

- 1 -
CONTENTS
1. SPECIFICATIONS : QW-2209
1. SPECIFICATIONS • • • • • • • • • • • • • • • • • • • • • • • • • • 1
2. OPERATION CHART • • • • • • • • • • • • • • • • • • • • • • • • 2
3. DRAWINGS • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 4
3-1. BLOCK DIAGRAM • • • • • • • • • • • • • • • • • • • • • • • • 4
3-2. CHECKING TERMINALS AND COMPONENTS• • • • 5
4. EXPLODED VIEW • • • • • • • • • • • • • • • • • • • • • • • • • • 6
5. PARTS LIST • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 7
6. PRECAUTIONS FOR REPAIR • • • • • • • • • • • • • • • • • • 8
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE • • 8
6-2. ACCURACY CHECKING • • • • • • • • • • • • • • • • • • • 8
Item Detail Item Detail
Battery CR1616 Accuracy ±15sec./month
Battery life Approx. 15 months Accuracy setting system Trimmer capacitor
Current consumption 3.685 µA maximum Accuracy checking See page 8
Alarm system Piezo plate on Back cover Accuracy setting +0.25~+0.35sec./day
Function
• Shock resistant
• Electro-luminescent backlight
Afterglow
• Low-temperature resistant (-20°C)
• 1/100-second stopwatch
Measuring capacity: 59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
Other: Auto-start
• Countdown timers
3 independent countdown timers
Input range: 1 minute to 60 minutes
Unit: 1/10 second
• Daily alarms
5 independent daily alarms 
• Hourly time signal
• Auto-calendar (to year 2039)
• 12/24-hour formats 
• Regular timekeeping: Hour, minutes, seconds, am/pm, month, date, day

- 2 -
2. OPERATION CHART : QW-2209
•In the Timekeeping Mode, press to switch between the day of the week and
month screens.
•In the Timekeeping Mode, press to illuminate the display for about two seconds.
•In the Timekeeping Mode, press to switch between the 12-hour and 24-hour
formats.
•When the 12-hour format is selected, “p.m.” times are indicated on the display by P,
while “a.m.” times are indicated by A. No indicators are used with the 24-hour for-
mat.
•The graphic area of the Timekeeping Mode screens shows patterns that indicate
the passage of seconds.
•The figures in the animation area of the Timekeeping Mode screens perform vari-
ous different animated patterns.
To set the time and date
1.Hold down while in the Timekeeping Mode until the seconds digits start to flash
on the display. The seconds flash because they are
selected .
2.Press to change the selection in the following sequence.
3.While the seconds digits are selected (flashing), press to reset the seconds to
.
•If you press while the seconds count is in the range of 30 to 59, the seconds are
reset to 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 to in-
crease the number. Holding down changes the current selection at high speed.
5.After you set the time and date, press to return to the Timekeeping Mode.
•The day of the week is automatically set in accordance with the date.
•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
A backlight that uses an EL (electro-luminescent) panel causes the entire display to
glow for easy reading in the dark. Depending on the mode, pressing or turns on
the backlight for about two seconds. See the sections that cover each mode for infor-
mation on whether you should press .
•The backlight of the watch employs an electro-luminescent (EL) light, which loses
illuminating power after very long use.
•The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
•The watch will emit an audible sound whenever the display is illuminated. It does
not indicate malfunction of the watch.
•The backlight automatically turns off whenever an alarm sounds.
COUNTDOWN ALARM MODE
The Countdown Alarm Mode has three 60-minute timers
whose starting time can be set in one-minute increments.
When the countdown reaches zero, an alarm sounds.
•In the Countdown Alarm Mode, press to illuminate
the display for about two seconds. To illuminate the dis-
play while setting the countdown time (while the min-
utes digits are flashing), press .
•The starting times of the countdown timers are preset to
15, 30, and 60 minutes when you purchase it. You can
use these settings as they are, or you can change to
different starting times if you want.
GENERAL GUIDE
•Press to change from mode to mode.
•The animation area shows different animated characters and graphics, depending on the mode and the operation being performed.
•The operational procedures for Modules 1909, 2109, and 2209 are identical. All of the illustrations in this manual show Module 1909.
To use a countdown timer
1.Press while in the Countdown Alarm Mode to select the timer whose time you
want to use.
•Pressing does not change the timer selection if a countdown timer operation is
currently in progress or is paused. You must stop the ongoing countdown operation
before you can change to another timer.
2.Press to start the countdown timer.
•When the countdown reaches zero, an alarm sounds for 10 seconds or until you
stop the alarm by pressing any button. The countdown time is automatically reset
to its starting value after the alarm stops.
•Press while a countdown operation is in progress to pause it. Press again to
resume the countdown.
•To completely stop a countdown operation, first pause it (by pressing ), and then
press . This returns the countdown time to its starting value.
To change a countdown time
1.Press while in the Countdown Alarm Mode to select the timer whose time you
want to change.
2.After you select a timer, hold down until the minutes digits start to flash on the
display.
3.Press to increase the minutes. Holding down changes the minutes at high
speed.
4.After you set the countdown time, press to return to the Countdown 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 Countdown Alarm Mode automati-
cally.
About countdown indicators
An audible beep, the EL backlight, and the graphic area on the display keep you
informed about the progress of the countdown as noted in the following table.
TIMEKEEPING MODE
This section provides information on setting the time and using the backlight.
STOPWATCH MODE
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. You also get Auto-Start function.
The range of the stopwatch is 59 minutes, 59.99 seconds.
•In the Stopwatch Mode, press to illuminate the dis-
play for about two seconds.
To measure elapsed time
1.Press to start the stopwatch.
2.Press to stop the stopwatch.
•You can resume the measurement operation by press-
ing again.
3.Press to clear the stopwatch to all zeros.
To record split times
1.Press to start the stopwatch.
2.
Press to display the timing up to that point. Stopwatch timing continues internally.
3.Press 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 to stop the time measurement.
5.Press to clear the stopwatch to all zeros.
To time first and second place finishes
1.Press to start the stopwatch.
2.Press when the first finisher crosses the line, and record the time.
3.Press when the second finisher crosses the line.
4.Press to display the finishing time of the second finisher.
5.Press again to clear the stopwatch to all zeros.
About the Auto-Start function
With the Auto-Start function, the watch performs a 5-second countdown. When the
countdown reaches zero, stopwatch operation starts automatically. During the final
three seconds of the countdown, a beeper sounds with each second.
Seconds
Day
Hour Minutes
YearMonth
Timer 1 Timer 3Timer 2
Month ScreenDay of the week Screen
Day of week – Day Month – Day
Animation areaGraphic area
Press
PM indicator Hour : Minutes
Seconds
Indication More than Less than Time Up
5 minutes 5 minutes
Graphic Area
Indication Start 5'00"0 Time Up
Beep 1 second 1 second 10 seconds
Backlight 1 second 1 second 2 seconds
Graphic area
Mode indicator – Timer No.
Seconds
Minutes
1/10 second
Seconds
Minutes
1/100 second
Mode indicator
Stopwatch Mode Alarm Mode Timekeeping Mode Countdown Alarm Mode
[Module 2109][Module 2209] [Module 1909]
C
C
D
D
D
D
D D
D
D
D
D
D
D
D
D
D
E
E E
E
E
E
E
E
E
D
D
E
D
E
E
E
E
B
B
B
or
EB
B
B
A
A
A
A
Animation area

- 3 -
To use the Auto-Start function
1.While the stopwatch display is showing all zeros
( ) in the Stopwatch Mode, press .
•At this time the auto-start indicator appears on the dis-
play to indicate that auto-start is on. Press again to
turn auto-start off (indicated when the auto-start indica-
tor is not on the display).
2.Press to start the countdown.
•Pressing also causes the countdown time to appear
on the display.
•When the countdown reaches zero, a tone sounds, the backlight illuminates the
display, and a stopwatch timing operation starts automatically.
•To stop the Auto-Start countdown and return to the all-zeros display, press .
•Pressing while the Auto-Start countdown is in progress immediately start the
stopwatch.
ALARM MODE
Five independent Daily Alarms can be set. Each alarm
lets you set the hour and minutes. When the Daily Alarm
is turned on, the alarm sounds for 20 seconds at the pre-
set time each day. Press any button to stop the alarm
after it starts to sound.
Whenthe HourlyTime Signalis turnedon, thewatch beeps
every hour on the hour.
•In the Alarm Mode (including alarm time setting), press
to illuminate the display for about two seconds.
•The graphic area in the Alarm Mode shows the current
on/off status of each of the five alarms.
To set an alarm time
1.Press while in the Alarm Mode to select the alarm whose time you want to set.
2.After you select an alarm, hold down until the hour digits start to flash on the
display. The hour digits flash because they are
selected .
•This operation automatically turns on the alarm.
3.Press to change the selection in the following sequence.
4.Press to increase the selected digits. Holding down 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 a.m. (Aindicator) or p.m. (Pindicator).
5.After you set the alarm time, press 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.
To turn an alarm and the Hourly Time Signal on and off
1.In the Alarm Mode, press to select an alarm or the
Hourly Time Signal.
2.Press to toggle the select item on and off.
•The indicators ALM and appear on the display when-
ever an alarm is turned on.
•The indicators SIG and appear on the display when-
ever the Hourly Time Signal is turned on.
•In other modes (besides the Alarm Mode), the ALM in-
dicator remains on the display as long as at least one of
the alarms is on, while the SIG indicator remains on the
display while the Hourly Time Signal is on.
•Indicators in the graphic area of the Alarm Mode show which alarms are turned on.
<Graphic Area>
To test the alarm
Hold down while in the Alarm Mode to sound the alarm.
Alarm 1 Alarm 4
Alarm 5
Alarm 2 Alarm 3
Hourly Time Signal
Hour Minutes
[Module 1909] [Modules 2109/2209]
AL-2 (off) AL-4 (off)
AL-1 (on) AL-5 (off)
AL-3 (on)
AL-2 (off) AL-5 (off)
AL-1 (on) AL-4 (off)
AL-3 (on)
Alarm on indicator
Graphic area
Auto-start indicator
Mode indicator – Alarm No.
Graphic area
Alarm on indicator
AM indicator
Hour : Minutes
C
D
D D
D
D
D
D
EE
E
E
B
B
A
A

- 4 -
3. DRAWINGS : QW-2209
3-1. BLOCK DIAGRAM
T1
AC
BD2
VDD
XTB
Xtal
CT XT
N1
N2
N3
N4
C4
BAT
KI4
KI3
KI8
KI5
KI6
KI7
KC4
KC3
KC2
KC1
KI2
KI1
BD1
LL1
LD
EL
FRONT
BACK
R
VSS2
LC1~LC5 L8~L48 L49~L52L1~L7
VCH VSS1 VSS3
LSI
TOTAL
BONDING 87PINS 80PINS
VC VCC
PZ
Tr

C1
C5+
C2
C6
C3
V
C7
+
+
S4
S3
SA
S2
S1
LCD
11
1
2
1
2
1. Not bonding.
2. KC2 : Open (No soldering).
KC3 : Open (No soldering).
Tr3
TE
PE
PF
TB Tr2Tns1
SE
SF
SEG. COM.
LC1 LC2 LC3 LC4 LC5
L 8 X3Y1
X3Y2
X3Y3
X3Y0
X3Y4
X3Y5
X3Y6
X3Y7
X3Y8
X4Y7
X4Y6
X4Y5
X4Y8
X4Y4
X4Y3
X4Y2
X4Y1
X4Y0
K1
K2
K3
K0
K4
K5
K6
K7
K8
X8Y7
X8Y6
X8Y5
X8Y8
X8Y4
X8Y3
X8Y2
X8Y1
X8Y0
X1Y1
X1Y2
X1Y3
X1Y0
X1Y4
X1Y5
X1Y6
X1Y7
X1Y8
X6Y7
X6Y6
X6Y5
X6Y8
X6Y4
X6Y3
X6Y2
X6Y1
X6Y0
X2Y1
X2Y2
X2Y3
X2Y0
X2Y4
X2Y5
X2Y6
X2Y7
X2Y8
X5Y7
X5Y6
X5Y5
X5Y8
X5Y4
X5Y3
X5Y2
X5Y1
X5Y0
HYP
c6b6
X0Y1
X0Y2
X0Y3
X0Y0
X0Y4
X0Y5
X0Y6
X0Y7
X0Y8
X7Y7
X7Y6
X7Y5
X7Y8
X7Y4
X7Y3
X7Y2
X7Y1
X7Y0
a6 c0d6g6 b0
a7 c1d7g7 b1
f6 d0a0e6
c8b8
a8 d8g8 COL ALM
MIN
f8 e8
g0
d1a1
a4
g1
e0c7b7 f0
c2b2
f7 d2a2e7 g2 e2f2
e1
c3b3 d3a3 g3 SIG
e3f3
f1
c4b4 d4g4
h8 b9 c9
e9 d9
c5b5 e4
f9 g9
a9 h9 i9 AMPM
f4
a5 d5g5 e5f5
AS
L 9
L 10
L 11
L 12
L 13
L 14
L 15
L 16
L 17
L 18
L 19
L 20
L 21
L 22
L 23
L 24
L 25
L 26
L 27
SEC
L 28
L 29
L 30
L 31
L 32
L 33
L 34
L 35
L 36
L 37
L 38
L 39
L 40
L 41
L 42
L 43
L 44
L 45
L 46
L 47
L 48
Y0 X0
d9
a9
g9
i9 h9
b9
f9
c9
c5
e5 f5
b5
e9
d8
a8
h8
PM a5
g5
d5
c4
e4 f4
b4
a4
g4
d4
c3
e3 f3
b3
a3
g3
d3
c2
c1
e1
b1
f1
e2 f2
b2
a2
a1
g1
d1
c0
e0
b0
f0
a0
g0
d0
g2
d2
COL
MIN SEC
ASSIGALM
AM
g8
HYP
b8
f8
c8
e8
d7
a7
g7
b7
f7
c7
e7
d6
a6
g6
b6
f6
c6
e6
K0 K1 K2 K3 K4 K5 K6 K7 K8
X1 X2 X3 X4 X5 X6 X7 X8
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y1
L8 L9
L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 L24 L25
LC1 LC2 LC3 LC4 LC5
L48 L47 L46 L45 L44 L43 L42 L41 L40 L39 L38 L37
L36
L35 L34 L33 L32 L31 L30 L29 L28 L27 L26

- 5 -
3-2. CHECKING TERMINALS AND COMPONENTS : QW-2209
Top view of P.C.B. ass'y Bottom view of P.C.B. ass'y
KI8 KI8
KI1
KI1
KI3
KI3
KI4
KI4
VDD
VSS2
VSS2
VSS2
VSS2
VSS2
LD
BD1
L
VDD
L
L
L VDD
VDD
VDD
VCC
VDD
VDD
VC
VC
VCH
VCH
VDD
VDD TE
TE
TE
SF
SF
SE
SF
PE PE
TE
VSS2
VSS1
VSS3
AC
VDD
VDD
XT
XT XTB
KI2 KI2
KI7 KI7
KC3
KC2
N3
N2
N1
N4 VDD
VDD
VDD
VDD
VDD
SE
KI5
KI5
SF(TB)
PF(VDD)
3 .PCB ass'y
(7640 2060)
Resistor / Chip
R
Transistor
Tr
Transistor
Tr2
Transistor
Tr3
Transfurmer
Tns1
Capacitor / Tantalum
C5
Capacitor / Tantalum
C7
Capacitor / Tantalum
C4
4 .Capacitor / Trimmer
(7103 0458)
CT
7 .Cushion 506 
(7211 9631)

8 .Cushion 6 
(7211 0064)

Xtal
5 .Oscillator / Crystal 
(7110 1263)
C1
Capacitor / Chip
C3
Capacitor / Chip
C2
Capacitor / Chip
C6
Capacitor / Chip
LL1
Coil

- 6 -
14 (7230 0980)
12 (7230 0616)
9 (7010 4674)
3 (7640 2060)
PCB ass'y
2a (7020 6090)
2b (7020 6092)
2c (1001 3459)
2d (1002 4508)
13 (7230 0511)
Battery / Lithium (CR1616)
1a (1003 3957)
1b (1003 3958)
1c (1003 3951)
11 (7233 2736)
4. EXPLODED VIEW : QW-2209
6 (1002 7903)
10 (7424 3212)

- 7 -
5. PARTS LIST : QW-2209
Note: 1. Prices and specifications are subject to change without prior notice.
2. Spare parts are classified as follows according to their importance in after-sales service.
A Rank ............................... Very Important
B Rank ............................... Important
C Rank ............................... Less important
3. Batteries in Bulkpackonthe tray will be supplied from our OverseasSpare Parts Section under charge basis.
Batteries in Brister pack will be supplied from our Sales Department.
4. As for order/supply of spare parts, refer to the separate publication “GUIDEBOOK for spare parts supply”.
Notes: Q – Used quantity
R – Rank
Item Code No. Parts name Specification Applicable Q R
7640 4037 MODULE/WITHOUT MOVEMENT QW-2209YC-01TK BGX-180V-1A 1 A
7640 4038 MODULE/WITHOUT MOVEMENT QW-2209YC-02TK BGX-180V-4 1 A
7640 4039 MODULE/WITHOUT MOVEMENT QW-2209YC-03TK BGX-180V-2 1 A
7640 4040 MODULE/WITHOUT MOVEMENT QW-2209YC-04TK BGX-180V-3 1 A
1a 1003 3957 LCD C2209-01P QW-2209YC-01/03 1 A
1b 1003 3958 LCD C2209-02P QW-2209YC-02 1 A
1c 1003 3951 LCD C2209-03P QW-2209YC-04 1 A
2a 7020 6090 EL YEL-1951-A-03 QW-2209YC-01 1 A
2b 7020 6092 EL YEL-1951-A-63 QW-2209YC-02 1 A
2c 1001 3459 EL YEL-1951-A-01 QW-2209YC-03 1 A
2d 1002 4508 EL YEL-1951-A-33 QW-2209YC-04 1 A
3 7640 2060 PCB ASS'Y Q254112*1TK QW-2209YC-01/02/03/04 1 A
4 7103 0458 CAPACITOR/TRIMMER TSF-2L2-120-4.2 QW-2209YC-01/02/03/04 1 B
5 7110 1263 OSCILLATOR/CRYSTAL DT-26S07 QW-2209YC-01/02/03/04 1 B
6 1002 7903 CONTACT/BATTERY (-) 156 Q39603B-1 QW-2209YC-01/02/03/04 1 C
7 7211 9631 CUSHION/506 Q49364-1 QW-2209YC-01/02/03/04 1 C
8 7211 0064 CUSHION/6 Q4914-1 QW-2209YC-01/02/03/04 1 C
9 7010 4674 INTERCONNECTOR/1951 Q463662-1 QW-2209YC-01/02/03/04 2 C
10 7424 3212 LABEL/1995 Q463482-1 QW-2209YC-01/02/03/04 1 C
11 7233 2736 SPACER/1951-1 Q463659A-1 QW-2209YC-01/02/03/04 1 C
12 7230 0616 SPRING/COIL 1199-1 Q437728B-1 QW-2209YC-01/02/03/04 2 B
13 7230 0511 SPRING/COIL 1253-2 Q439219-1 QW-2209YC-01/02/03/04 1 B
14 7230 0980 SPRING/COIL 1514 Q456768-1 QW-2209YC-01/02/03/04 1 B
BATTERY/LITHIUM CR1616 QW-2209YC-01/02/03/04 1
* For the price, new parts and minimum quantity of the above parts, please refer to the Parts Price List P.P.L.-565.

- 8 -
6. PRECAUTIONS FOR REPAIR : QW-2209
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE
1.Perform AC (ALL CLEAR) when inserting a new battery, or else the memories and or counters may
give erratic displays.
Touch the AC contact and the positive (+) side of the battery or main plate with the metallic tweezers.
The contact should be made for about two seconds.
For 2 seconds after the AC operation, do not make any button operations on these modules.
2.On removing of the module from the case, please insert the precision screw driver between the module
and the case pointed by arrows.
6-2. ACCURACY CHECKING
Check the accuracy of the module with the quartz timer after switching the module to "ACCURACY CHECKING
MODE".
The operations are shown below:
A) SWITCHING TO "ACCURACY CHECKING MODE"
While pressing the D button, press the A and C buttons, at the normal time keeping mode.
Then all the segments are displayed and the LCD drive signals are changed to the static drive signal of
"32 Hz" so that you can check the accuracy with the quartz timer.
B) CANCELLATION OF THE "ACCURACY CHECKING MODE"
Press any button except for D button.
Then the display is returned to its original state.
NOTE: The "ACCURACY CHECKING MODE"
will automatically return to the regular
mode in 1 ~ 2 hour(s) without any operation.
Metallic tweezers

Nishi - Shinjuku Kimuraya Bldg. 1F
5-25, Nishi-Shinjuku 7-Chome
Shinjuku
- ku , Tokyo 160-0023 , Japan
Printed in Japan
Overseas Service Division
CASIO TECHNO CO.,LTD.
EI1200601A