Phone Description - Nokia RM-70 Service Manual

RM-70
System module

Phone description

Introduction
This chapter describes the baseband module including engine, power management, interfaces, audio etc.
The baseband is based on BB5.0 with a RAPGSM main processor and Retu/Tahvo energy management. All
blocks that require high voltage process are in Tahvo and all other in Retu. The RF part is based on the ASIC
Ahne.
RM-70/Nokia 7370 operates on the GSM900/1800/1900 bands.
The phone is a swivel phone, with one main part and one wing board. They are connected with a micro coax
cable harness.
Main board includes: BB and RF blocks, Bluetooth, FM radio, HWA, camera, etc.
Wing board includes: LCD display and earpiece
Characteristic components
Function
RF ASIC
Energy management
Main processor
Memory
Power amplifier
Antenna
System connector
Battery
Swivel detection
Bluetooth
FM radio
Stereo IHF Speaker
Earpiece
Microphone
Vibra
Charger connector
Camera
Issue 1
Name
Ahne
Retu
Tahvo
RAPGSM
Combo: 128 Mbit SDRAM & 256 Mbit NOR flash
RF9282
PopPort
BL-4B, 3.7 V, 700 mAh, Li-ion
2 Hall ICs and 2 permanent magnets
BC4-ROM
TEA5761, single chip
13mm ALE
7/11
2 mm Nokia charger interface
1.3 Mpix SMIA85, no flash light
COMPANY CONFIDENTIAL
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