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This manual provides the information necessary to repair, calibration, description and download the features of this model. Introduction, Purpose, Regulatory Information. Performance : 2.1 System Overview 2.2 Usable environment 2.3 Radio Performance 2.4 Current Consumption 2.5 RSSI BAR 2.6 Battery BAR 2.7 Sound Pressure Level 2.8 Charging. Technical brief : 3.1 General Description 3.2 GSM Mode 3.3 UMTS Mode 3.4 LO generation and distribution circuits 3.5 Off-chip RF Components 3.6 Digital Baseband(DBB/MSM7200) 3.7 Hardware Architecture 3.8. Subsystem(MSM7200) 3.9. Power Block 3.10. External memory interface. 3.11. H/W Sub System 3.12. Main Features. Troubleshooting Guide : 4.1 RF Component 4.2 SIGNAL PATH_UMTS RF 4.3 SIGNAL PATH_GSM RF 4.4 Checking VCTCXO Block 4.5 Checking Front-End Module Block 4.6 Checking UMTS Block 4.7 Checking GSM Block 4.8 Checking Bluetooth Block 4.9 Checking WLAN Block 4.10 Power ON Troubleshooting 4.11 Charger Troubleshooting 4.12 USB Troubleshooting. 4.13 SIM Detect Troubleshooting 4.14 Camera Troubleshooting 4.15 Keypad Backlight Troubleshooting 4.16 Main LCD Troubleshooting 4.17 Receiver Path 4.18 Headset path 4.19 Speaker phone path 4.20 Main microphone 4.21 Headset microphone 4.22 Vibrator. Block Diagram : 6.1 GSM & UMTS RF Block. Circuit Diagram 6.2 Interface Diagram. Exploded views and replacement part list. Out-of-band rejection or attenuation levels, usually specified to meet these conditions: - Far out-of-band signals - ranging from DC up to the first band of particular concern and from the last band of particular concern to beyond three times the highest passband frequency. - Tx-band leakage - the transmitter channel power, although attenuated by the duplexer, still presents a cross-modulation threat in combination with Rx-band jammers. The RF filter must provide rejection of this Tx-band leakage. PCB layout, and many more.

Tags : external memory interface, passband frequency, cross modulation, rf component, interface diagram, rf filter, distribution circuits, band signals, rf components, usb troubleshooting, hardware architecture, battery bar, model introduction, radio performance, manual content

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