Pantech PG-1400, Руководство по обслуживанию

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PG-1400 Service Manual
** Fl(n)= frequency value of the carrier , Fu(n)= corresponding frequency value in upper band
1.3
Item Name and Usage
1400, GSM digital cell phone, is supercompact, superlight mobile communication terminal for
personal use. It has a 900MHz and 1800MHz frequency band and adopts GSM and DCS mode
having excellent spectrum efficiency, economy, and portability.
This product is GSM Cellular type portable phone, adopting 1-cell Li-ion battery and power saving
circuit to maximize its operation time. Also, it is equipped with a fixed antenna and its color LCD with
font built in enables both Chinese and English text service. And power control(basic feature of GSM),
security feature, voice symbol feature, and variable data rate feature are used appropriately to
ensure its best performance. This product consists of a handset, battery pack, and Travel charger.
1.4
Characteristics
1) All the active devices of 1400 are made of semiconductors to ensure excellent performance and
semi-permanent use.
2) Surface mounting device (SMD) is used to ensure high reliability, compactness and lightness.
3 ) 1400 adopts the Silabs’s AERO RF transceiver, which is CMOS RF front-end for multi-band
GSM digital cellular handsets. The Aero's highly-integrated architecture eliminates the IF SAW
filter, low noise amplifiers (LNAs) for three bands, transmit and RF voltage-controlled oscillator
(VCO) modules, and more than 60 other discrete components found in conventional GSM
handsets to deliver smaller, more cost effective GSM solutions that are easier to design and
manufacture.
4) 1400 is designed to perform excellently even in the worst environment
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