4. TROUBLE SHOOTING
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4.3 Power On Trouble
VCORE
VABB
VMEM
VSIM
VRTC
VVCXO
VEXT
(1608)
2V8_VEXT
C115
1u
2V75_VABB
2V5_VMIC
2V85_VSIM
2V75_VVCXO
2V8_VMEM
VUSB
10K
R100
1u
C120
VBAT
1u
C117
1u
C114
C116
0.1u
C123
1u
1V8_VRTC
C118
2.2u
1u
C124
1u
VMIC
N16
T7
VRTC
VSIM
T6
E15
VUSB
VVCXO
D16
C119
VCORE1
P1
N1
VCORE2
VEXT1
A4
B4
VEXT2
T3
VMEM1
VMEM2
T2
H16
VABB
T4
1V8_VCORE
BACK_BATT
Test Points
Circuit Diagram
Z3X-BOX.COM
Summary of Contents for MG300d
Page 23: ...3 TECHNICAL BRIEF 24 Figure 3 1 SKY74400 FUNCTIONAL BLOCK DIAGRAM Z 3 X B O X C O M ...
Page 83: ...4 TROUBLE SHOOTING 84 4 6 LCD Trouble EMI FILTER CN600 Test Points Z 3 X B O X C O M ...
Page 110: ...5 DOWNLOAD AND CALIBRATION 111 8 Push the START button Z 3 X B O X C O M ...
Page 111: ...5 DOWNLOAD AND CALIBRATION 112 9 Phone test Finish is shown in below screen Z 3 X B O X C O M ...
Page 112: ...6 BLOCK DIAGRAM 113 6 BLOCK DIAGRAM Z 3 X B O X C O M ...
Page 113: ... 114 Z 3 X B O X C O M ...
Page 124: ... 125 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 125: ... 126 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 137: ... 138 Z 3 X B O X C O M ...
Page 138: ... 139 Z 3 X B O X C O M ...
Page 140: ... 141 12 EXPLODED VIEW REPLACEMENT PART LIST Z 3 X B O X C O M ...
Page 141: ... 142 Z 3 X B O X C O M ...