4. TROUBLE SHOOTING
- 87 -
Triple Buffer (NC7NZ34K8X)
• From DBB, three control signals (VC1, VC2, VC3) are fed into the Triple Buffer
• Triple buffer controls the Ant SW
RF Transceiver Chip (SI4205_BM)
1) LNA input port of RF Main Chip(Si4205)
• Balanced-type LNA Input
VC1
VC2
VC3
Triple Buffer
VCC = 2.85 V,
from LDO(U805)
SI4205_BM
GSM850 LNA Input
GSM1800 LNA Input
GSM1900 LNA Input
Summary of Contents for L1150
Page 1: ...Service Manual Model L1150 Service Manual L1150 P N MMBD0034601 Date June 2004 Issue 1 0 ...
Page 3: ......
Page 18: ...3 H W Circuit Description 17 Figure 1 Receiver Part Block Diagram ...
Page 42: ...3 H W Circuit Description 41 A BaseBand Components Component Side ...
Page 102: ...5 DISASSEMBLY INSTRUCTION 101 5 DISASSEMBLY INSTRUCTION 2 1 1 2 ...
Page 103: ...5 DISASSEMBLY INSTRUCTION 102 1 2 3 ...
Page 104: ...5 DISASSEMBLY INSTRUCTION 103 2 1 1 2 ...
Page 105: ...5 DISASSEMBLY INSTRUCTION 104 3 ...
Page 106: ...5 DISASSEMBLY INSTRUCTION 105 ...
Page 113: ...7 BLOCK DIAGRAM 112 Baseband Part 7 BLOCK DIAGRAM The Block Diagram of the Baseband Part ...
Page 122: ... 121 9 PCB LAYOUT ...
Page 123: ... 122 9 PCB LAYOUT ...
Page 133: ......
Page 134: ... 133 11 EXPLODED VIEW REPLACEMENT PART LIST 11 1 EXPLODED VIEW ...
Page 135: ......
Page 137: ...11 EXPLODED VIEW REPLACEMENT PART LIST 136 ...
Page 138: ...11 EXPLODED VIEW REPLACEMENT PART LIST 137 ...
Page 140: ...11 EXPLODED VIEW REPLACEMENT PART LIST 139 ...
Page 141: ...11 EXPLODED VIEW REPLACEMENT PART LIST 140 ...
Page 142: ...11 EXPLODED VIEW REPLACEMENT PART LIST 141 ...
Page 143: ...11 EXPLODED VIEW REPLACEMENT PART LIST 142 ...
Page 144: ...11 EXPLODED VIEW REPLACEMENT PART LIST 143 ...
Page 145: ...11 EXPLODED VIEW REPLACEMENT PART LIST 144 ...
Page 146: ...11 EXPLODED VIEW REPLACEMENT PART LIST 145 ...
Page 147: ...11 EXPLODED VIEW REPLACEMENT PART LIST 146 ...
Page 148: ...11 EXPLODED VIEW REPLACEMENT PART LIST 147 ...
Page 149: ...11 EXPLODED VIEW REPLACEMENT PART LIST 148 ...