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Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-6
8-3-1. AP Power On
Power on
No
Check the Voltage of TA1100
3.6V ~ 4.35V ?
No
Check the BTC1100
Repair the BTC1100
Yes
Check the Resistance between
1st pin of TAC1000 and Ground
when you press the Power key
No
Check the TAC1000
Repair TAC1000
Yes
Check the Voltage of C1133 when
3.6~4.35V Battery is connected
→
3.3V or above
No
Check the Q1103
Repair the Q1103
YES
Check the voltage of C1133 when TA is
connected without Battery
→
2V or above(Voltage is switching
No
Check the U1107
Repair the U1107
YES
Check the C1045 = 19.2MHz and
R603 = 32764.5Hz
1. Check the OSC900
Repair the OSC900
2. Check the U900
Repair the U900
YES
No
Check the AP initial operation
Check the Voltages of C961=1.225V, C901=1.05V,
C902=1.8V, C930=3.075V, C931=1.8V, C932=2.95V,
C933=2.95V, C934=2.95V, C947=1.05V and C948=1.225V ?
Check the U900
Repair the U900
No
YES
Check the R925 = 1.8V ?
Check the U900
Repair the U900
YES
No
Check the R919 = 1.8V ?
1. Check the Binary Download
2. Check the UCP700
Repair the UCP700
YES
No
Summary of Contents for SCH-I535
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