LG KG280 Service Manual - Page 93
Circuit Diagram
 |
View all LG KG280 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 93 highlights
7. Circuit Diagram 1 2 3 4 5 6 7 8 9 10 10V Over ECTH0004804 10V Over ECZH0000830 10V Over ECZH0000816 10V Over ECCH0000113 10V Over ECCH0000155 VBAT VBAT R600 1K C650 39p TX_RAMP A A VAPC 20 VBATT 17 VCC1B 6 VCC1A 2 10V Over ECCH0000155 ECCH0000155 10V Over C605 C651 TP600 TP601 TP602 C600 C601 C602 C603 C604 0.01u 0.01u 33 uF 33p 12p 18p 0.01u R604 0 R625 0 C649 R603 NA R607 220 R605 24 R608 220 C608 33p 5.6p R606 C609 0 15 DCS_PCS_OUT DCS_PCS_IN 3 R612 C611 R609 0 NA R610 C610 0.5p C652 NA 11 EGSM_OUT 4 EGSM_IN R611 30 19 U600 RSVD_GND ENABLE 18 180 SKY77318 21 1 R613 10p 180 P_GND BS R601 100ohm NA R602 100ohm PA_EN 2V75_VVCXO PA_BAND B GND2 GND1 GND3 10 GND4 GND6 GND5 GND7 16 GND8 GND9 G1 RF G2 SW600 RF500 ANT ENWY0004501 C653 22p C612 1.2p C613 NA 14 13 12 9 8 7 5 C606 27p C607 NA QN R614 0 R615 NA 26M_DBB C615 22p ANT_SW2 ANT_SW1 R616 R617 100ohm 100ohm FL600 20 GND7 19 GND6 GND5 18 GND4 16 13 GND3 11 GND2 GND1 9 15 VC2 VC1 14 LSHS-M085FJ GSM850_900_TX 12 GSM1800_1900_TX 10 GSM1900_RX_OUT2 GSM1900_RX_OUT1 8 7 GSM1800_RX_OUT2 GSM1800_RX_OUT1 6 GSM900_RX_OUT2 5 4 GSM900_RX_OUT1 3 GSM850_RX_OUT2 GSM850_RX_OUT1 2 1 ANT 17 C618 2.7p C619 2.7p L602 6.2nH C620 6.8p L603 C614 39p QP C625 0.1u VCC_FE VCC_BBQ 24 23 Q 22 IB VCC_BBI QB REF_OP 21 SDATA REFIN 20 19 RX1900B 25 26 RX1900 VLDO2 16 27 RX1800B RX1800 U601 VLDO1 VBAT 15 28 29 RX900B AD6549 VDD 14 13 30 RX900 VCC_TXVCO 12 31 RX850B RX850 TXOP_HI TXOP_LO 11 32 VLDO3 10 9 33 GND REFINB 18 SEN NC VAFC_NC VCC_REF 17 C616 0.1u C617 0.1u 2V8_VMEM VBAT C626 C627 C628 0.1u NA 0.1u C621 C622 C623 0.1u 0.1u NA 7 SCLK 3I 8 5 6 4 1 2 C630 C631 6.2nH 39p 39p C624 6.8p EUSY0280103 ECCH0000182 GSM_TX DCS/PCS_TX GSM_RX DCS_RX PCS_RX ANT_SW1 HIGH LOW LOW LOW LOW ANT_SW2 LOW HIGH LOW LOW LOW C629 6.8p C632 6.8p L604 18nH C633 6.8p C635 6.8p L605 18nH IP C634 39p IN S_DATA S_CLK S_EN C642 C643 C644 27p 27p 27p C636 C641 39p 0.01u C639 C645 C646 NA NA 0.1u R619 0 2V75_VVCXO U602 SN74AHC1GU04DCKR C637 5 2 VCC 4 1000p IN GND OUT 3 R620 1M C640 2.2u R624 0 R623 0 R621 0 26M_MIDI 26M_DBB 26M_BT D 2V75_VVCXO X600 AFC R622 1 VCONT OUT 3 15K C647 2 GND VCC 4 1000p 26MHz C648 TG-5010LH-26M 2.2u EXSK0008101 E 1 2 3 4 5 6 7 LGIC(42)-A-5505-10:01 LGE Internal Use Only - 94 - LG Electronics Inc. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes
-
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
 |
 |
