Table of Contents
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• MAIN-A UNIT (BOTTOM VIEW)
3.3 V
REGULATOR
(IC852)
13.8 V DC/DC
CONVERTER CIRCUIT
9 V DC/DC
CONVERTER
(IC801)
3.3 V DC/DC
CONVERTER
(IC802)
3.8 V DC/DC
CONVERTER
(IC821)
REVERSE CONNECT
PROTECT
(D851)
DC/DC ENABLE
CONTROL CIRCUIT
MAIN-A UNIT
8 V REGULATOR
(IC803)
SDRAM
(IC103)
Inside the shielded case.
5 V REGULATOR
(IC831)
2-4
POWER ON
ETHERNET REFERENCE CLOCK
CONTROL CIRCUIT
(X951)
SIM SELECTOR
CIRCUIT
J254
J253
CODEC
(IC401)
ELECTRONIC
VOLUME
(IC703)
SDRAM
(IC102)
Inside the shielded case.
ETHERNET TRANSCEIVER IC
(IC951)
FLASH ROM
(IC104)
CPU
(IC101)
Inside the shielded case.
ANALOG SWITCH
(IC752)
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