Power Rail Checklist
(2)
4.
如果有
Power Rail
和
GND
短路
(
對地阻抗偏低
)
,先確認短路主因。
•
Ex.
假設量測到
VSD_1V8
對地短路
–
可以斷開
R1102
量測兩端阻抗
確認是否為
PMIC
內部短路
5.
如果確認為
U1101
或
U501
內部短路
…
•
照
X-Ray
檢查是否有短路或空焊
•
對
U1101 / U501
再度加熱
•
更換
U1101 / U501
1.8V
1200mA
VSD_SW1
VSD_1V8_PMIC
1
2
R1102
0Ohm
r0805_h24
1
2
C1103
10UF6.3VX5RC3M
VDD_PMU_SD1
AA8
VSS_PMU_SD1
AA7
VSS_PMU_SD1_ISO
W9
SD1SW1
Y 8
SD1FB
AA9
VDD_PMU_SD2
AA13
VSS_PMU_SD2
Y 13
VSS_PMU_SD2_ISO
W11
SD2_SW1
AA14
SD2FB
Y 11
U1101B
PMB9102
1
2
C1104
22UF/6.3V
VSD_1V8
VSYS
2
1
L1102 1UH
Irat=2.7A
Summary of Contents for Z300C
Page 1: ...ASUS Z300C CG Trouble Shooting Guide ...
Page 7: ......
Page 8: ...POWER ...
Page 11: ...LCM TOUCH PANEL ...
Page 19: ...CAMERA ...
Page 24: ...USB ...
Page 28: ...SENSOR ...
Page 33: ...AUDIO CODEC ...
Page 41: ...SIM CARD Only for Z300CG ...
Page 44: ...SD CARD ...
Page 47: ...EMMC ...
Page 50: ...CHARGER ...
Page 53: ...GAS GAUGE ...
Page 55: ...APPENDIX Points for Attention ...