Casio Tm-100 Troubleshooting guide

SlERV~ClE.MANUAL

aPARTS L~ST(without price)

REF. NO.S/M-242

APRIL 1887

MODULE NO.

OW-SSl

TM-100

Glenn Sim HC

A-PDF Watermark DEMO: Purchase from www.A-PDF.com to remove the watermark

OPERATION CHART: MODULE OW-561

(Time/calendar setting mode]

[Stopwiltch mode][Daily alarm model

Press©.

(Reversion to regular timekE'eping) The watch reverts to regular timekeeping modt" when

©button is pressed after operation, re~ardless of mode.

(Auto-retrieve function) Daily alarm and Time/calendar setting modes will automatically

return 10 regular timekeeping mode if no button is pressed for 1 10 2 minutes.

Time-signal-ON mark

Alann-ON mark IM~ator

_r--;::;:,,J:1l press~ .• ~,.r:,-j'''.~:lPress© .11n .•..q:;:~,1

LP':G~ . ~~!.."U!..I$L!/-".ryU:4iJHour /Mode indicator Minute rJ/10 second Hour ISecond

Minute Second Minute

Press©.

Press@.

~

©

®Press@. [Calendar}

® •••••••••.•••..,

"''''' ••• J

Release"@. Momh Date Day

Reading the display

[Regular timekeeping mode]

(Time) [Countdownalarm}

Countdown period

indicator

Hour Minute Second

PM

Countdown period

indicator

\©

®

,®

Countdown alarm operation

Countdown COl" bl" set from 1 minut€' to 30 minutes. To set

countdo\-\'n period. press@as many times as required.

(Setting countdown period I

Each press of@shifts countdown period.

Countdown starts when@is released. When countdown

reaches zero, beeper sounds for 10 second. Press any

bulton to stop beeper.

Antenna

Transmitter on/off

swiech

Using Transmitter

1) Switch on Fi\.t radio and set to a frequency (88 MHz

to 108 MHz) where a broddcast is not received. At

this time noise is heard.

•For radio "'fen stereo/mono swiech. set to "mono".

2) Switch on transmitter <lnd pull out antenna.

•Sh'itch of! eransmiuer when noe in use.

Tuning knob )\:5

Microphone (~)J:~ff

3) Slowly turn tuning knob to position where noise on

radio stops.

"If 88MHz· ••

:·.108MHz~·

• High !'olum~ setting may cause hOh'ling sound.

4) Speak mto microphone on transmitter and adjust

radio luning.

Daily alarm operation

Beeper sounds for 20 seconds at preset time every day until cleared when daily alarm is

Sl?'1.Press any button to stop beeper. Signal sounds every hour on the hour if time signal

is set.

(Sound demonstration) Press and hold @in alarm mode to sound beeper,

[Selling daily .Iarm]

1) Press@in daily alarm mode to set hour, Pressing@incrementsdigit. Keep pressed for

high speed change.

2) Press@to set minute digits, Pressing@incrementsdigit. keep pressed for high speed

change,

(Auto-retrievc function)

Display automatically returns to initial daily alarm mode display if no button is pressed

for 1 to 1. minutes.

3) Press© to complete.

{Transmitter precautions]

o This product is not intendt'd to hE' used to invade the privacy of olhers,

QNever attempt to incre'lse the power of the transmitter by altering the internal circuitry

or extendin~ the antenna, Doing so m.lY be violation of loccll laws ~overnin~ the use of

radio transmitters,

• Avoid frequencies used by commercial radio station.

• The efficiency of the transmitter is rpduced in low tE'mperature<;.

• The maximum communication distance is 60 meters under optimum conditions. The

a(1:ual distance, however, is determined by surroundings and the condition of the

radio.

• Orient the antenna to find the best position for communi<..ltion.

• Stable reception may b(' difficult to obtain whpn usin~ radios which utilize hc.-tdphone

· and earphone cords as antennas. For best results, use J high-sensitivity FM radio.

[Transmitter applications!

• Sending a voin' to a remote radio unit.

• Recording of converSiltion on a radio cassette recorder.

• Using a radio as a wireless PA device.

• Intercommunication b('lween molor vehidl's O\'£'r the FM radio.

Cot'er

-..Transmitrer banery should be replaced periodically el'ery 2years.

Do not leal'e dead battery in unie to al'oid malfunction caused

by battery leakage.

-..Rem01'e battery K'hen transmirter is noe used for extended periods.

(Transmitter IMttery mainten<lnct'j

Transmitter signal \\.'eakens when battery power decrcast's,

Batt<.>r}should then be replaced

1) Usmg a COlO. remove rear battl;"r\ cover te12) ~~~J~~ b~~~e~y~••a) rtng, r0-5~

• Ensure that plus Side of batrer) ISfacmg up. e

3) PI.lCe rrog on top of battery and screw on cowr +.

• Rmg prorec(fJ una from dwt and humlday.

RingO

®---~®-- .•®

(Re-stclrt) (Stop) (Reset)

Stopwatch operation

A signal confirms start/stop operation.

(Working range) Total elapsed time display is limited to

59 minutes 59.9 seconds. For longer times reset and

start again.

(On ~r~:s~.oiIY alarm an~r~s':'~~ress@.~~- -~-~

Daily alarm Daily alarm Daily alarm Time signal

and time and time signal only sounds. only sounds.

signal sound. do not sound. Press @.

-1-

Glenn Sim HC

(70200236)

Coil

Bottom view of P.C.B.

-2-

LCD drive terminals

LSI

P.C.B. with LSI

(71002128)

Top view of P.C.B.

(71032167)

Chip capacitor

.CIRCUIT DIAGRAM

2. CHECKING TERMINALS AND COMPONENTS

3. SPECIFICATIONS

PART 1 . WATCH BLOCK

Item Detail ItemDetail

Battery

NO.365/SRll16W (28mAH, 1.55Vdc)

Accuracy

±30 sec. /month

Battery life

Approx. 2 years Accuracy setting system

Pad selection (G1~G3)

Current consumption

1.55MA maximum Accuracy checkingSee page 5

Alarm system

Piezo plate on back cover

Accuracy setting

+0.9 ~ -0.7 sec./day

li-=========================================-

Glenn Sim HC

4. EXPL

1 (70004101)

67)

6 (7020 0236)

4 (71032167)

10 (7201 8877)

15 (72119649)

13 (7222 0404)

9 (7010 1343)

5(71101070)

2 (71002128)

7 (7225 1024)

11 (72118103)

14 (7222 0421)

12 (7212 5821)

Q~ 16_[N_O_._36_5_]

~ 8_(_7_2_12_3_1_7_4)

-3-

Glenn Sim HC

5. PARTS LIST

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

BRank Important

CRank Others

3. Our salesdepartment supplies all batteries, so order batteries separately through Casio Sales

Department.

4. As for order/supply of spare parts, refer to the separate publication "GU IDEBOOK for spare parts

supply".

Unit Price

Item Code No. Part Name

Spec. No.Applicable ModelO'ty

"

N.R. Yen (¥)

(FOB: JAPAN)

WATCH BLOCK OF MODULE OW-661C02

TM-100

A Rank 1

70004101

LCD C506·01

OW-661 C021

2

71002128

P.C.B. with LSIMSM6087C-459

"

1

3

7101 0074Transistor 2SC1622A

"

1

(10)

4

71032167

Chip capacitorCM-21YV104P15V

"

2

(10)

5

71101070

Ouartz oscillator

KF-26GT

"1

(5 )

6

70200236Coil OL3.3 x 1.6DR-01

"

1

(5 )

Bor CRank 7

72251024

.Battery contact(-) 156

032496-1OW-661 C021

(20)

8

72123174

Battery supporter 187

032612A-1

"1

(10)

9~

70101343Interconnector 506B0410135-1

"

1

(20)

10~

7201 8877

Coil spring 506B

0410700A-1

"

1

(50)

11

7211 8103Insulation sheet 231

043835-1

"

1

(20)

12~

72125821

Main (Switch) plate 661

023065-1

"

1

(10)

13

72220404

Housing 506-1

022124-1

"1

(20)

14

72220421

Housing 506-2

022125-1

"1

(20)

15

7211 9649Cushion 506B049500

"

1

(20)

16

BatteryNo. 365 (SR 1116W)

OW-661C02

1

Note: ~ - Newly employed parts

O'ty- Ouantity used per unit

" - Minimum order/supply quantity

-4-

Glenn Sim HC

6. AC (ALL CLEAR)

o Press the AC (All Clear) contact when inserting a new battery, or the memories and/or counters

may give erratic displays.

o Touch the AC contact and the positive battery side (+) with metal tweezers.

o The touch shou Id be made for about 2 seconds.

7. ACCURACY CHECKING

It is not possible to check the accuracy with the LCD sens r 0'" aa"'tz ."

operations are performed, because the internal display dri e .G e

To check the accuracy (by 32 Hz): Select the "ACCURACY C EK

The operations are shown below:

er unless the following

2.6 Hz.

ODE".

A) CHANGE TO THE "ACCURACY CHECKING MODE"

Push all the buttons (®,®and@) at the same time for abo' 3secOltC1S

All the segments will be displayed and the LCD drive signals i c -

from 42.6 Hz to 32 Hz. Then, check the accuracy with the LCD se

of a quartz timer.

B) CANCELLATION OF THE "ACCURACY CHECKING ODE"

Push any button.

Then the display will return to the regular timekeepi g mode.

Note: The "ACCURACY CHECKING MODE" will automatically return

to the regular mode in 1 ~ 2 hour(s) without any operation.

P.'rf

©

@

-5-

Hour Minute Second

Glenn Sim HC

PART 2: TRANSMITTER BLOCK

1. SPECIFICATIONS

MODULATION: Frequency modulation (FM)

TRANSMISSION FREQUENCY: 88 MHz ~ 108 MHz

ANTENNA: 105mm overall length (77mm extended portion)

FIELD STRENGTH: Lessthan 15j.LV/mat a distance of 100 meters

Approx. 60m in flat area, line-of-sight

(Actual distance differs according to environmental and

radio conditions.)

TRANSMISSION RANGE:

A) TYPE: 3-transistor FM transmitter

B)

C)

D)

E)

F)

G) BATTERY TYPE: No. 389/SRl130W (1.55V, 85mAH)

H) BATTERY LIFE: Approx. 5 hours (continuous operation)

I) CURRENT CONSUMPTION: 6mA~ 8mA

2. REPAIR

A precise adjustment and a fine tuning by a special instrument is always required when

repairing the P.C.B. ass'y in the transmitter block.

Therefore, in casea trouble occurs in the P.C.B. ass'y, replace the whole P.C.B. ass'y with

new one.

-6-

Glenn Sim HC

3. EXPLODED VI EW

*Battery cover

Set the crown button ass'y to be correctly

joined with the trimmer capacitor on the

P.C.B. ass'y.

£O-ring

*Antenna

~ect sheet

£Antenna guide

£C ~tact switch

*Back seal rubber (for Battery cover)

£Bcck cover ass'y

13 (/2180926)

972 26061)

6 -'2 78470)

4 72252133)

16 :No.389]

aTE: F ponents marked "*",

:fa to the Parts List P/L-401.

*Back seal rubber (for Bac' cover ass'y)

~

°7. ~ 3_(7_2_2_5_2_14_1_)

©-! ~ 12 (72180470)r"k I2 (7105 0033)

(-) ~ (+) Set the microphoneI .-~~ ...- as in the figure.

3H 9H *Scre v

side side (for Fro -:Dutton ass'y)

5 (7201 9106)

8 (7212 5837)

*Screw (for Back cover ass'y)

7 (72125829)

1 (72402134)

11 (6324 0443)

*Screw

(for Terminal plate 661-1)

15 (7218 1000)

*Crown button ass'y

*Push button ass'y (for Set)

*Push button ass'y

(for Function)

*Case center sub ass'y with glass

*Packing ring

WATCH BLOCK

14 (72180982)

*Front button ass'y

10 (72126093)

-7-

Glenn Sim HC

4. PARTS LIST

Note: 1. Prices and specifications are subject to change without prior notice.

2. Spare parts are classified asfollows according to their importance in after-sales service.

A Rank Very Important

'B Rank. . . . . . . . . . . . . . . .. Important

CRank Others

3. Our sales department supplies all batteries, so order batteries separately,through Casio Sales

Department.

4. As for order/supply of spare parts, refer to the separate publication "GUIDEBOOK for spare

parts supply".

Unit Price

Item Code No. Part Name

Spec. No.

Applicable Model

O'ty

*

N.R. Yen (¥)

(FOB: JAPAN)

TRANSMITTER BLOCK OF MODULE OW-661 C02

TM-l00

A Rank 1~

72402134

P.C.B. ass'y 023164*2

OW-661C02

1

2~

71050033

Microphone WM-62A

"

1

Bar CRank 3~

72252141

Battery contact (+) 661

0311052-1QW-661 C021

(20)

4~

72252133

Battery contact (-) 661

0311048-1

"

1

(20)

5~

72019106

Coil spring

661

0412827-1"

1

(50)

6

72078470Screw 465B 048694B-l

"

3

(50)

7~

72125829

Terminal plate 661

0311051-1

"

1

(20)

8~

72125837

Terminal plate 661-1

0412892-1

"1

(10)

9~

72126061

Terminal plate 661-2

0311482-1

"

1

(20)

10~

72126093

Terminal plate 661-4

0311694-1

"

1

(10)

11

63240443

Insulation seal for battery

A43337·1

"

1

(10)

12~

72180470

Insulation sheet 661

0412889-1

"

1

(20)

13~

72180926Insulation sheet 661-10413218-1

"

1

(20)

14~

72180982Insulation sheet 661-20413396-1

"

1

(20)

15~

72181000

Insulation sheet 661-3

0413397-1

"

1

(20)

16

Battery NO.389

QW-661C02

1

(SR1130W)

Note: ~

O'ty

*

Newly employed parts

Ouantity used per unit

Minimum order/supply quantity

-8-

Glenn Sim HC

practical

ssible,

5. TRANSMITTER CHARACTERISTIC

A. Field strength and transmission range

What is meant by a field strength of 15 pV 1m?

It is a value indicating the strength of a radio wave which is expressed by the voltage induced

in a conductor of 1 meter long (unit length) placed in space. In other words, the value of 15

pV 1m means that the voltage induced in a 1-meter-long conductor by a radio wave is 15 pV

(15/1,000,000 of one volt).

Transmission range by a field strength of 15 pV 1m

A highly sensitive radio set is normally possible to receive an input of several dB .•

use. However, if the noise level in surroundings is high, reception will be almost .

unless the desired signal input level is considerably higher than the noise input le.e.

The relation between the desired signal and the noise levels is normally expressec as a signal-

to-noise (SIN) ratio. In general, the SIN ratio needs to be morethan 20dB (that ·s. -" e signal

strength is ten times the noise strength).

The field strength of 15 pV 1m is equivalent to 23.5 dB.

The field strength measured at 23.5 dB is good enough for practical use in s 0

noise level is lower, but in urban or industrial areas where the noise level is g e, teSIN

ratio becomes lower. It is, therefore, necessary to get near to the radio so . order to

improve the SIN ratio.

o Transmission range varies depending on radio set performance (sensitivity, e·

o Transmission range varies depending on the noise level around the rece'

(Normally, the noise level in urban areas is approximately 20 dB.)

o When there are high-rise buildings or hills on the propagation path, the prac::-

mission range will be shorter.

B. Transmission range depending on surroundings

-'

Since the field strength produced by the TM-1 00 is very feeble and ~" e a~-"~-;' - orter

for the radio wavelength in use, the transmission range may be a~e ~. ions

of surrou nd ings.

Any conductive material located close to the TM-1 00 makes .- weak or

strong. Such variations are closely related to the radio a

Radio field strength becomes weak in the following cases.

o Communication between a room enclosed by eTa

concrete building) and the qutside

o Though the window is open, it is smaller for t

o Communication over obstacles such as fe ces

-9-

c as a ferro-

Glenn Sim HC

Radio field strength becomes strong in the following cases.

o Field strength is induced around a conductive object near the TM-l 00.

o Areas close to the water

o The TM-l00 is being operated at a high altitude.

C. Transmission techniques for the TM-l00

The radio wave produced by the TM-l 00 is very weak, and the antenna is also so short that it

can be retracted into the watch case. This means that it is far shorter than a conventional rod

antenna ..

The antenna is so designed that variations in the radio field strength will occur depending on the

direction in which the person holding the TM-l 00 faces or the position of his wrist at which the

TM-l00 is worn.

Example: When the person holding the TM-l 00 turns his back toward the receiving station,

reception will be better, since directivity is produced in the backward direction.

Also, variations in the radio field strength will be caused by the height of the

person holding the TM-l 00.

(When the holder bends forward, a similar result is obtained.)

Like other transmitters, the distance travelled by radio waves will differ according to the voice

input level through a microphone.

If the voice input level is lower and the communication distance is longer, the articulation of

speech will be reduced. When a microphone is positioned too close to the speaker's mouth, the

sound will be distorted. Keep your mouth 5 to 8 em off the microphone and speak in at the

proper input level.

Note: Never attempt to increase the power of the transmitter by altering the internal circuitry

or extending the antenna. Doing so may be violation of local laws governing the use of

radio transmitters.

D. Receiving techniques by radio sets

To increase the transmission range without violating of local laws, radio set performance also

needs to be improved.

o Connect a high-performance antenna to the radio antenna.

o Attach an FM receiving amplifier sold on the market.

By adjusting the direction of the receiving antenna, the best receiving effect can be obtained .

..,..10-

Glenn Sim HC

Casio TM-100 Troubleshooting guide

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