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3. TROUBLE SHOOTING
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START
No
No
No
Replace U1600
Yes
Yes
Yes
Check TP1(C1613) at U1500
Check if there is any major difference referring
To Figure 3.2.1.4 Is it similar ?
Check TP2(C1612)at U1600
Check if there is any major difference referring
To Figure 3.2.1.4 Is it similar ?
Check TP3(C1603) at U1600 (VPWR)
Whether it is higher than 1.5V
Check C1613, C1614
PAM circuits OK See next page
The Problem may be Logic part
Refer to Logic troubleshoot
3.2.1.3 Checking B1 TX PA