This document mainly introduces the maintenance guide for SXG 75, including product features, interfaces, disassembly, assembly, common problems, etc.
This service manual covers the BenQ SXG75 brick‑style mobile phone. It includes key features, technical specifications, interface options, and a detailed exploded view of the device. The document also lists required service equipment, software configuration, and testing information.
The manual provides step‑by‑step disassembly and assembly instructions, connector diagnostics, and repair guidelines for common problems such as display, MMC, battery, camera, and IRDA issues. Safety notes, ESD requirements, and recommended soldering temperatures are included to ensure proper handling during repairs.
| Battery nominal capacity | 1000 mAh |
|---|---|
| Standby time | Up to 420 h |
| GSM talk time | Up to 3.6 h |
| WCDMA talk time | Up to 3.1 h |
| Display resolution | 240 × 320 pixels |
| Display colour depth | 256 k colours |
| Operating temperature | -10 °C to +55 °C |
| Storage temperature | -30 °C to +85 °C |
Use the resistor test function of a multimeter; the measured resistance should be approximately 0 Ω between the spring contacts and soldering contacts.
Set the soldering iron tip temperature to about 360 °C when removing or resoldering the MMC connector.
The SXG75 is equipped with a Li‑ion battery pack with a nominal capacity of 1000 mAh.