Telephone Description - Motorola DCS StarTac Service Manual

1. CELLULAR PERSONAL

TELEPHONE DESCRIPTION

1.1 GENERAL
The DCS StarTac personal cellular telephone (shown on next
page, in Figure 3) is a microprocessor controlled, full duplex,
synthesized FM radiotelephone using digital modulation
techniques, for use in compatible 1800 MHz cellular
radiotelephone systems. When operated properly, the
equipment will provide the user with land-linked telephone
service through individual cell site base stations, all linked
to a central control office. The StarTac has a 1.0 Watt
maximum output power capability.
1.2 PHYSICAL PACKAGING
The transceiver circuitry is contained in a water resistant
polycarbonate plastic housing measuring 98.3 mm (L) x
57.3 mm (W) x 22.5 mm (D); with a capacity of less than
100cc at a weight of approximately 99.5g; including Slim
LiIon battery pack and antenna.
The main internal electronic circuitry is contained on two
multi-layer boards, the RF/Logic board, and the keyboard
assembly.
The keypad board assembly incorporates the display, keypad
contacts and LEDs. Electrical connections between the two
boards are provided by connectors at the lower end of each
board.
The RF/Logic board houses the RF and Audio/Logic
circuitry on separate sides in addition to SIM contacts, the
alert, a 16 position ZIF connector, the microphone, and an
external connector.
The accessory connector, situated at the base of the phone
on the main board, allows connections to the audio/logic
circuitry and antenna for accessory applications such as a
mobile adaptor and chargers. When the accessory RF
connector is used (ie terminated with a resistance of
approximately 10 Kohms or less to ground) the RF to the top
antenna is disconnected.
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Operating power for the personal telephone can be obtained
from various methods including the following:-
Standard NiMH Battery pack
Standard Slim LiIon Battery pack
Standard XT LiIon Battery pack
Auxilliary NiMH Battery
The Auxilliary LiIon Battery
Rapid Charging Power Supplies
Cigarette Lighter Adaptors
The battery charger plugs into the accessory connector
socket, situated at the base of the telephone, and a vehicle's
cigar lighter socket. As well as providing a battery charging
function, the adaptor provides power directly to the phone
whilst it is in use even with a 'dead' battery.
1/. Vehicle Adaptor Kits.
There will be a DHFA available which supports Hands Free
Operation, battery charging, automatic answering, ignition
sense, entertainment mute and auxilliary alert. The kit will
be compatible with ETACS StarTac but a separate hangup
cup will be necessary. It will accomodate an external
microphone and speaker, optional handset and the analogue
3 watt booster capability. The auxiliary battery cannot be
used with the DHFA. The vibra- alert is inactive when
phone is in use with the DHFA.
NOTE: The StarTac may have various battery options as
standard depending on the particular market requirements.
68P09304A85
DESCRIPTION
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