This manual provides detailed information on GSM TELEPHONE SGH-C300's specifications, exploded view, troubleshooting, circuit diagrams and other information
This service manual covers the SGH-C300 GSM telephone, presenting detailed specifications, frequency bands, transmit power classes, and modulation details. It also includes safety precautions, repair guidelines, and a list of the phone's main functions such as SMS/MMS, voicemail, and calendar features.
The document contains exploded diagrams, parts lists with part numbers, block and PCB diagrams, and a troubleshooting flow chart to assist technicians in diagnosing and repairing the device.
| Frequency Bands | GSM 900 (890‑915 MHz), EGSM 900 (880‑915 MHz), DCS1800 (1710‑1785 MHz) |
|---|---|
| Transmit Power (MS Power) | 33 dBm‑13 dBm (GSM 900), 33 dBm‑5 dBm (EGSM), 30 dBm‑0 dBm (DCS1800) |
| Modulation | 0.3 GMSK |
| Receiver Sensitivity | -102 dBm (GSM 900/EGSM), -100 dBm (DCS1800) |
| Battery Capacity | 800 mAh |
It supports GSM 900, EGSM 900, and DCS1800 bands covering 890‑915 MHz, 880‑915 MHz, and 1710‑1785 MHz respectively.
The phone can transmit up to 33 dBm for GSM 900 and EGSM, and up to 30 dBm for DCS1800.
The manual includes a Repair Precaution section and an ESD (Electrostatic Sensitive Devices) precaution guideline.
It supports SMS/MMS messaging, voicemail, broadcast and SOS messages, as well as calendar, alarm, calculator, voice memo, and speed‑dial features.