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8. Level 3 Repair
8-4-3. No Service
No service
Yes
No
Yes
No
END
Check the Voltage
C2018 : 1.8V, C2023 : 1.2V
C2005/C2002 : 1.0V
No
Replace the U2009
Home screen
→
Phone
→
Keypad
→
*#1234#
→
Check
Phone version
→
CP :
A705FXXXX or unknown
Yes
No
CP : A705XXXXX
Check the connection of RF coaxial cable
Check the clock OSC5000
Is the frequency 38.4MHz?
No
Yes
No
Replace the OSC5000
Replace the U2009
Yes
No