Level 3 Repair
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8-5
8-3-1. Power On
Check the key-FPCB
(open, etc)
Watch can`t power on.
Change the key
-
FPCB
And retry to the power-on operation.
END
No
Yes
Check the U400 output voltage
(C438 = 1.15V, C440 = 1.05V,
C442 = 1.35V, C443 = 2.1V,
C420 = 1.2V, C421 = 1.15V)
If the output voltage is not satisfied with normal
condition, Change the U400.
No
Yes
Check the U400 output clock
C437
Is that frequency 32KHz
If the output frequency is not satisfied with normal
condition, Change the U400.
No
Yes
Check the Internal Battery
Voltage.
Is it more than 3.4V?
Charging the battery by TA.
If its voltage level is extremely low(under 3.0V),
Change the battery.
check the initial operation
Yes
Abnormal
Check the Clock
OSC400(C401)
Is that frequency 19.2MHz?
If the output frequency is not satisfied with normal
condition, Change the OSC400.
No
Yes
Yes
Change the OCTA LCD ASSY
Power-on the Watch and check
the power-on sound
Sound or vibration is ok?
Yes
No
