Nokia 6150 Manuales De Servicio
PAMS
Technical Documentation
NSM–1
System Module
Original 10/98
Page 3–8
System Module
Circuit Description
The transceiver electronics consist of the Radio Module, RF + System
blocks, the UI PCB, the display module and audio components. The key-
pad and the display module are connected to the Radio Module with a
connectors. System blocks and RF blocks are interconnected with PCB
wiring. The Transceiver is connected to accessories via a bottom system
connector with charging and accessory control.
blocks, the UI PCB, the display module and audio components. The key-
pad and the display module are connected to the Radio Module with a
connectors. System blocks and RF blocks are interconnected with PCB
wiring. The Transceiver is connected to accessories via a bottom system
connector with charging and accessory control.
The System blocks provide the MCU, DSP and Logic control functions in
MAD ASIC, external memories, audio processing and RF control hard-
ware in COBBA ASIC. Power supply circuitry CCONT ASIC delivers oper-
ating voltages both for the System and the RF blocks.
MAD ASIC, external memories, audio processing and RF control hard-
ware in COBBA ASIC. Power supply circuitry CCONT ASIC delivers oper-
ating voltages both for the System and the RF blocks.
The RF block is designed for a handportable phone which operates in the
GSM and DCS1800 systems. The purpose of the RF block is to receive
and demodulate the radio frequency signal from the base station and to
transmit a modulated RF signal to the base station. The SUMMA ASIC is
used for VHF and PLL functions. The CRFU3 ASIC is used at the front
end.
GSM and DCS1800 systems. The purpose of the RF block is to receive
and demodulate the radio frequency signal from the base station and to
transmit a modulated RF signal to the base station. The SUMMA ASIC is
used for VHF and PLL functions. The CRFU3 ASIC is used at the front
end.
External and Internal Connectors
Rubber boot
Microphone
Solderable element,
2 pcs
Cable/Cradle connector,
guiding/fixing hole, 3 pcs
guiding/fixing hole, 3 pcs
Contact 1
DC–jack
Contact 2
Contact 9
Contacts
3...8
3...8
Microphone port