Samsung P1010 Block Diagram 7
Level
8.
Block Diagram
8-1.
Repair
3
8-8
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PCB Diagrams
8-2.
8-2-1.
Top
8-2
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8-2-2.
Bottom
8-3
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Flow Chart of Troubleshooting
8-3.
Equipments
Power Supply
↑
Oscilloscope
↑
Digital Multimeter
↑
driver, Tweezer
+
↑
8-4
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8-3-1.
Power On
Power On'does not work
'
Yes
Check"Power on" by power
cablewithjig-on
Yes
Check the Battery Voltage
is more than
Yes
Check U704(PMIC) and Power
on voltage(L703>1.35V,
L704>1.3V, L705>1.8V)
3.6V
No
No
No
Check the switch circuit,
FET gate voltage, FET voltage
Change the Battery
Battery power is low
(
Change the problem point
short, open, crack, etc.)
(
And if PMIC has problem, change U704)
)
Yes
Check the Clock at
OSC700(C701) that frequency
check the initial operation
is
END
32K
Yes
Yes
No
Check the clock generation circuit
related to OSC700)
(
8-5
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8-6
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8-3-2.
Charging Part
Check IFC500 pin#1whether
voltage reading is greater than
5V
Check U814 pin#6or
whether voltage reading is
Check U703 output pin C718
whether voltage reading is
Abnormal charging part
Yes
and current reading is
greater than
greater than
greater than
1.16A
Yes
5V
Yes
4.2V
#7
No
No
No
Check the TA and the DLC
TA or DLC may not be connected properly)
(
Check U814 chip
U814_OVP chip may not work)
(
Check U703 chip
U703 chip may not work at room temperature)
(
Yes
Check battery voltage is
change when TA is connected
Yes
Check U703 output pin C738
whether voltage is change
when TA is connected
Yes
END
No
No
Check U703 chip
U703 chip may not work)
(
Check U703 chip
U702 chip may not work)
(
8-7
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