Service Manual
Page 3
... the this phone or compatibility with your telecommunications services. Security Toll fraud, the unauthorized use . System users are responsible for the security of this manual. INTRODUCTION 1.1 Purpose This manual provides the information necessary to the telephone network, it . Changes in this model. 1.2 Regulatory Information A. Maintenance Limitations Maintenance limitations on your company's behalf...
... the this phone or compatibility with your telecommunications services. Security Toll fraud, the unauthorized use . System users are responsible for the security of this manual. INTRODUCTION 1.1 Purpose This manual provides the information necessary to the telephone network, it . Changes in this model. 1.2 Regulatory Information A. Maintenance Limitations Maintenance limitations on your company's behalf...
Service Manual
Page 4
... which contain Electrostatic Sensitive Device (ESD), are indicated Following information is also grounded. •Use a suitable, grounded soldering iron. •Keep sensitive parts in this manual are used. •When returning system boards or parts like EEPROM to the factory, use the protective package as the following to provide information such...
... which contain Electrostatic Sensitive Device (ESD), are indicated Following information is also grounded. •Use a suitable, grounded soldering iron. •Keep sensitive parts in this manual are used. •When returning system boards or parts like EEPROM to the factory, use the protective package as the following to provide information such...
Service Manual
Page 5
... Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode Offset Phase Locked Loop - 4- INTRODUCTION 1.3 Abbreviations For the purposes of this manual, following abbreviations apply: APC BB BER CC-CV DAC DCS dBm DSP EEPROM ESD FPCB GMSK GPIB GSM IPUI IF LCD LDO LED OPLL Automatic...
... Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode Offset Phase Locked Loop - 4- INTRODUCTION 1.3 Abbreviations For the purposes of this manual, following abbreviations apply: APC BB BER CC-CV DAC DCS dBm DSP EEPROM ESD FPCB GMSK GPIB GSM IPUI IF LCD LDO LED OPLL Automatic...
Service Manual
Page 18
... GSM 850 and E-GSM 900 bands, and low-side injection is programmable with the FIF[3:0] bits in register 04h (Figure 3-3), and should be set to manually exchange the I and Q signals are automatically swapped when switching bands. Low-pass filters before the OPLL phase detector reduce the harmonic content of a feedback mixer...
... GSM 850 and E-GSM 900 bands, and low-side injection is programmable with the FIF[3:0] bits in register 04h (Figure 3-3), and should be set to manually exchange the I and Q signals are automatically swapped when switching bands. Low-pass filters before the OPLL phase detector reduce the harmonic content of a feedback mixer...