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PG-1810 Service Manual
6.7.2 Power Supply Check Point _ TEST CONDITION 1
1. Check to see U302.3 and 5 pin's Voltage are 2.8V : CP 146
NO
Check to see U201 and U302 cold solder,broken,short to the other PCB pattern or not
If you find out any defect, you replace it
2. Check to see U307.1 pin's Voltage is around 0.5 ~ 1.5V and U307.4 pin Voltage is 2.75V : CP 147
NO
Check to see U202 cold solder,broken,short to the other PCB pattern or not
If you find out any defect, you replace it
3. Check to see U307.3 pin's output Clock (26MHz) : CP148
NO
Check to see U307 cold solder, broken,short to the other PCB pattern or not
If you find out any defect, you replace it
4. Check to see C325, C331 and C332 and U306.11, 12, 13, 28, 29 pin's Voltage are 2.8V : CP149
NO
Check to see U302, C325, C331 and C332 cold solder, broken,short to the other PCB
pattern or
Not.
If you find out any defect, you replace it
5. Check to see CC301 and U303.2, 6, 17 pin's Voltage are 3.5V ~ 4.2V : CP150
NO
Check to see CC301 and U303 cold solder, broken,short to the other PCB pattern or not
If you find out any defect, you replace it
48
PANTECH
CP146
R&D CONFIDENTIAL
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