Troubleshooting.pdf

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8. Level 3 Repair
8-1.Block Diagram
8-1
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Level 3 Repair
8-2. PCB Diagrams
8-2-1. Top
8-2
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Level 3 Repair
8-2-1. Bottom
8-3
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Level 3 Repair
8-3. LOGIC
8-3-1. Power On
Power switch on
NG
Check the current
consumption
>= 100mA?
Yes
Check the battery
voltage
>= 3.3?
Yes
Check the clock at
OSC200 =32KHz?
NO
Resolder OSC200
NO
Download
NO
Change the battery
Yes
C280(VDD_CORE)=1.2V?
C208(VDD_RF1)=2.85V?
C262(VDD_DCDC)=1.8V?
NO
Change the UCP200
Yes
Check the clock
OSC100 = 26Mhz ?
Yes
Check the initial operation
NO
Check the clock generation circuit
8-4
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Level 3 Repair
8-5
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.

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