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8. Level 3 Repair
8-4-1. Power On
Yes
Yes
Yes
Yes
No
Abnormal
No
No
Yes
No
Yes
No
Watch does not power on.
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
key-FPCB
(open, etc)
Change the key
-
FPCB
And retry to the power-on operation.
Power-on the Watch and
check the power-on sound
Sound or vibration is ok?
Check the U300 output
voltage
(C405 = 0.8V, C404 =
1.35V, C406=2.0V
Check the OSC400 output
clock
(C437,C438)
Change the OCTA LCD ASSY
Replace the U300
check the initial operation
END
Replace the OSC400.
※
Test condition (Oscilloscope setting)
: 20.0us.div (time division)
Check the
Clock OSC300(C306)
Is that frequency 26MHz?
Replace the C306 or OSC300