LG KE600 Service Manual - Page 105
Checking PLL Control signals, RF Transceiver Circuit Diagram
 |
View all LG KE600 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 105 highlights
5. Trouble shooting 5.15.4 Checking PLL Control signals Checking Points Checking Flow Figure 7. Transceiver RF Transceiver Circuit Diagram 1V5_RF 2V85_RF 2V7_VCXO 85_RF R617 10 C623 0.1u 33 FE2 34 35 VBIAS VDDTX1V5 36 TX1 37 TX2 VDDTX2V8 38 VDDMIX2V8 39 GND3 40 GND4 41 U602 PMB6272 32 FE1 VDDBIAS2V8 31 RX1X 30 RX1 29 RX2X 28 RX2 27 26 GND2 25 RX3X 24 RX3 23 RX4X 22 RX4 21 VDDLNA1V5 C624 0.1u C625 47n VDDRX2V8 20 VDDRX1V5 19 R616 820 VCO_RC VDDVCO2V8 18 EN 17 VDDXO2V8 16 FSYS1 15 GND1 14 13 C626 0.1u C627 0.1u R615 0 C628 0.1u XOX 12 XO 11 FSYS2 10 FSYS3 9 VDDDIG1V5 VDDDIG2V8 DA 8 CLK 4 BX 3B 2 AX A 7 5 6 1 C630 0.1u C631 0.1u 2V7_VCXO C629 1000p C633 100p R620 0 C641 C632 NA 1u 26MHz 4 VCC GND 2 3 OUT VCONT 1 X601 Figure 8. Transceiver Circuit Waveform Figure 9. PLL Control Waveform - 106 -
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78
-
79
-
80
-
81
-
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94
-
95
-
96
-
97
-
98
-
99
-
100 -
101 -
102 -
103 -
104 -
105 -
106 -
107 -
108 -
109 -
110 -
111
-
112
-
113
-
114
-
115
-
116
-
117
-
118
-
119
-
120
-
121
-
122
-
123
-
124
-
125
-
126
-
127
-
128
-
129
-
130
-
131
-
132
-
133
-
134
-
135
-
136
-
137
-
138
-
139
-
140
-
141
-
142
-
143
-
144
-
145
-
146
-
147
-
148
-
149
-
150
-
151
-
152
-
153
-
154
-
155
-
156
-
157
-
158
-
159
-
160
-
161
-
162
-
163
-
164
-
165
-
166
-
167
-
168
 |
 |
