Introduction To Baseband Troubleshooting - Nokia E62 Service Manual

RM-88
BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Introduction to baseband troubleshooting

This chapter outlines the troubleshooting process for any baseband related problems reported from our
customer. All troubleshooting by service technicians will be limited to those parts that are not under any
shields.
Basic Troubleshooting for RM-88
The most likely problems that may be reported with RM-88 engine are listed below.
• Phone does not power up or gets jammed during startup.
• Abnormal current consumption.
• Flashing does not work.
• Charging does not work.
• Display does not work.
• Keypad does not work.
• Display backlight does not work.
• Keyboard EL dome sheet does light up.
• Mail indicator LED does not work.
• Phone gives SIM card error.
• Phone cannot access SD card.
• USB does not work.
• Audio (earpiece, microphone, and/or IHF) does not work.
• Audio headset does not work.
• Volume key does not work.
• Bluetooth does not work.
• IRDA does not work.
Issue 1 COMPANY CONFIDENTIAL Page 6 –5
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