Block Diagram - Nokia NSE–3 SERIES Service Manual

PAMS
Technical Documentation

Block Diagram

CHARGE
SMPS
V_IN CHRG_CTRL
System con- protec–
nector X100 tion
FBUS
AUDIO
HS / Data con– protec–
nector X200 tion
Original 11/97
EXTERNAL
I / O
CRM
AMC
CHGON
CONTROL
CIRCUITS
MBUS
MUTE
AUDIO
AUDIO
INTERFACE
MUTE
EAR
POWER
AMPLIFIER
EAR
VCC
CRM
protec–
DC connector
AMC
tion
X300
IGNS
VCC
IGNS
RESET
POWER
SUPPLY
PWRON
MICROPHONE
MUTE
AMPLIFIER
LOGIC
PASSIVE
MIC
External Microphone
protec–
Connector X200
tion
protec– External Speaker
tion Connector X500
HFU–2
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