3. TECHNICAL BRIEF
- 17 -
3.1 General Description
The U970/KU970 supports UMTS-2100, GSM-900, DCS-1800, and PCS-1900 based
GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne1Zero- IF
architecture to eliminate intermediate frequencies, directly converting signals between RF and
baseband. The quad-band GSM transmitters use a baseband-to-IF upconversion followed by an offset
phase-locked loop that translates the GMSK-modulated or 8-PSK-modulated signal to RF.
1
QUALCOMM’s branded chipset that implements a Zero-IF radio architecture.
3. TECHNICAL BRIEF
UMTS (21 00)
GSM (900, 1800, 1900)
Bluetoo t h
1. RTR6275 fo r GSM Tx
and WCDMA Tx
2. RTR6275 fo r GSM/EDGE
Rx and WCDMA Rx
3. Bluet oot h RF module
4. PM6650 for power
management
1
2
4
3
[Fig 1.1] Block diagram of RF part
Summary of Contents for U970
Page 1: ...Date April 2007 Issue 1 0 Service Manual Model U970 KU970 Service Manual U970 KU970 ...
Page 3: ... 4 ...
Page 20: ...3 TECHNICAL BRIEF 21 Fig 1 2 RTR6275 RX feature ...
Page 28: ...3 TECHNICAL BRIEF 29 Figure1 7 PM6650 Block Diagram ...
Page 41: ...3 TECHNICAL BRIEF 42 Table 1 1 Summary of MSM6280 device features ...
Page 45: ...3 TECHNICAL BRIEF 46 Figure 1 1 PM6650 Functional Block Diagram ...
Page 76: ...4 TROUBLE SHOOTING 77 4 1 RF CRF Component TOP SIDE BOTTOM SIDE 4 TROUBLE SHOOTING ...
Page 81: ...4 TROUBLE SHOOTING 82 Check C412 of PMIC U400 Check R214 of MSM U200 ...
Page 83: ...4 TROUBLE SHOOTING 84 Logic Table of the FEM ...
Page 89: ...4 TROUBLE SHOOTING 90 4 7 Checking GSM Block ...
Page 91: ...4 7 3 Checking RF Tx level 4 TROUBLE SHOOTING 92 ...
Page 94: ...4 TROUBLE SHOOTING 95 ...
Page 100: ...4 TROUBLE SHOOTING 101 R403 Q402 Q401 Q400 Charging part Main PCB Front ...
Page 103: ...4 TROUBLE SHOOTING 104 Q400 X 200 USB part 1 Main PCB Front U503 USB part 2 Main PCB Rear ...
Page 112: ...4 TROUBLE SHOOTING 113 CN601 CN701 CN700 ...
Page 115: ...4 TROUBLE SHOOTING 116 C500 C501 R501 R502 ...
Page 117: ...4 TROUBLE SHOOTING 118 SPK Audio Amplifier Analog Switch ...
Page 119: ...4 TROUBLE SHOOTING 120 MIC800 R507 C520 ...
Page 121: ...4 TROUBLE SHOOTING 122 R303 Ear_Sense_N C210 MIC Input ...
Page 141: ...5 DOWNLOAD 142 ...
Page 147: ...5 DOWNLOAD 148 Read IMEI BT address from UE 2 Step 4 Check IMEI and Bluetooth address ...
Page 158: ...6 BLOCK DIAGRAM 159 Table 2 1 RF Block Component ...
Page 163: ...6 BLOCK DIAGRAM 164 6 2 4 Placement Top Side ...
Page 164: ...6 BLOCK DIAGRAM 165 Bottom Side ...
Page 165: ... 166 ...
Page 175: ... 176 8 PCB LAYOUT U970 KU970 ...
Page 176: ... 177 8 PCB LAYOUT U970 KU970 ...
Page 177: ... 178 8 PCB LAYOUT U970 KU970 ...
Page 178: ... 179 8 PCB LAYOUT U970 KU970 ...
Page 179: ... 180 8 PCB LAYOUT ...
Page 180: ... 181 8 PCB LAYOUT ...
Page 181: ... 182 ...
Page 187: ... 188 ...
Page 189: ... 190 ...
Page 209: ...Note ...
Page 210: ...Note ...