This document is technical information for Sony Ericsson repair technicians, aimed at assisting in service, repair, and troubleshooting operations on Sony Ericsson mobile phones. It should be used as a complement to other repair instructions and tools. Use the search function in Adobe Acrobat Reader to search for components throughout the entire document by entering the component name or other word.
This manual is intended for authorized Sony Ericsson service technicians and complements other repair instructions. It covers troubleshooting of on/off, flash, display, key, charging, SIM, and network problems for the C702 mobile phone.
The document includes a complete equipment list, voltage and current settings for power supplies, cable length limits, test probe recommendations, and step‑by‑step fixture setup instructions for performing calibration and diagnostic tests.
| Power Supply Channel 1 VBATT Voltage | 3.8 V |
|---|---|
| Power Supply Channel 1 VBATT Current Limit | 2 A |
| Power Supply Channel 2 DCI O/ SEPI Voltage | 5.0 V |
| Power Supply Channel 2 DCI O/ SEPI Current Limit | 2 A |
| GND to BDATA Resistance | ≈120 kΩ |
| Maximum Cable Length (VBATT to Dummy Battery) | 1 m |
| Recommended Test Probes for DMM | 0.64 mm |
Set the voltage to 3.8 V and limit the current to 2 A.
Approximately 120 kΩ.
The cable length must not exceed 1 meter.
An Agilent 6632B or a similar power supply is recommended.