4. TROUBLE SHOOTING
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4.18. Transmitter Part Description
Tx Part component Description
• Tx I/Q signal from ABB signal
(ABB)
BAS
E
B
A
N
D
(DBB)
Triple Buffer
Xout
VC1
VC3
VC2
VC_GSM_RX_TX
VC_GSM850_TX
VC_GSM1800/1900_TX
< SI4205_BM >
TxVCO
Divider
/ 1,2
VC_TCXO
26MHz
Divider
/ 2
IF PLL
PAM
RF PLL
Tx Frequency
GSM850 : 824 ~849MHz
DCS : 1710 ~ 1785MHz
PCS : 1850 ~ 1910MHz
An
te
nna S
w
itch
GSM850
DCS / PCS
IF Frequency
GSM850 : 896MHz
DCS : 766MHz
PCS : 854MHz
RF2 Frequency
GSM850 : 1272 ~ 1297MHz
DCS : 1327 ~ 1402MHz
PCS : 1423 ~ 1483MHz
ABB
Si4205
TxQP
TxQN TxIN TxIP
Tx Block Diagram
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 ...
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Page 134: ... 133 11 EXPLODED VIEW REPLACEMENT PART LIST 11 1 EXPLODED VIEW ...
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