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Level 3 Repair
8-6
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8-3. LOGIC
8-3-1. Power On
Check the Battery Voltage
is more than 3.5V
(TP:C315, C316)
' Power On ' does not work
Change the Battery
END
No
Yes
Check the Clock at
OSC200 (C227, C228,
32.768kHz, ±20ppm)
No
Yes
VDD_1.8V = 1.8V?
(TP: C231)
No
Yes
Check the initial operation
Yes
Yes
replace the OSC200
Check the Main Chip related to
SD1_FB=1.8V (TP:C231)
(to lookover the Chip damage)
Check the Clock at
OSC201 1,3pin
(when normal operating
condition, 26MHz ±11ppm)
Yes
No
Check the Main Chip
(to lookover the Chip damage)
(TP : OSC201 1,3pin / look over the waverform
using the oscilloscope)
Summary of Contents for GT-C3750
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