Casio ABX-68B, Repair Manual, Page: 43 / 52

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Remove the coil ass'y from the module/with movement
and measure the resistance value at the two terminals
with a multimeter. If the resistance value at this time is
roughly 3 K
Ω
, the coil ass'y is not defective. (Fig. 14-1)
Furthermore, some models of analog watches use a
battery/lithium (3 V).
The resistance value of the coil ass'y in these models
is roughly 6 K
Ω
.
When grabbing the coil ass'y with a tweezers, al-
ways make sure to grab onto the metal portion (side
opposite that with the terminals).
Never grab the coil ass'y on the terminal side or coil
(wire) (since this can break the coil wire).
15. Repair of Module/with movement
Regular maintenance must be performed on modules/with movement to eliminate friction between
mechanical components and maintain smooth operation.
In the case of metal movements in particular, the watch may stop running as a result of being out of oil
even when there are no malfunctions.
There are many cases in which this is repaired by cleaning and lubricating of the movement.
There are two types of modules/with movement used in Casio watches, namely plastic movements
and metal movements.
Although plastic movements require little maintenance such as regular lubrication, they are more
susceptible to shock than metal movements, thus requiring that caution be used when handling parts.
Although metal movements are more resistant to shock than plastic movements, they require mainte-
nance in the form of regular cleaning and lubrication.
15-1 Precautions when Repairing Modules/with movement
1) Since several extremely small gears and screws are used in analog movements, caution must be
taken during repair work to ensure that they are not lost.
2) Since modules/with movement are susceptible to fine particles of dust and hair, in addition to
keeping the location where repair work is performed clean, an effort should be made to remove
any dust and hairs by blowing the movement with an blow brush several times during the course of
repair work.
Particular caution should be taken with respect to plastic movements since they easily pick up
electrostatic charge making it easy for dust and hair to become adhered to the movement.
3) When repairing an module/with movement, anti-magnetic tweezers should be prepared exclu-
sively and distinguished from tweezers used in other repairs (see below).
4) When grabbing the coil ass'y with a tweezers, always hold onto the metal portion to prevent break-
ing of the wire.
5) When picking up plastic gears with tweezers, grab the shaft or body from above or below.
Fig. 14-1