Troubleshooting - Nokia 7088 Troubleshooting Manual

7088 (Flower)
Base band Description and Troubleshooting

Troubleshooting

First, carry out a thorough visual check of the module. Make sure in particular
that:
• There is no mechanical damage.
• Soldered joints are OK.
• ASIC orientations are OK.
The following hints should help find the cause of the problem when the
circuitry seems to be faulty. Troubleshooting instructions are divided into the
following sections:
• "Mobile Terminal is Dead"
• "Flash Memory Faults"
• "Power Does Not Stay ON or the Mobile Terminal is Jammed"
• "Charger Faults"
• "Audio Faults"
• "Display Faults"
• "Keypad Faults"
• "Camera Faults"
Note:
• MSM6025 (U625) is under filled and cannot be replaced.
• Memory IC (U6) is under filled and cannot be replaced.
• Backend IC (U11) is under filled and cannot be replaced.
• The Base band Shielding Cover Assy and RF Shielding Cover cannot
be reused after removal.
• After using the heat gun, the dome sheet is recommended to be
replaced.
Page 30 © 2006 Nokia Corporation Company Confidential Issue 1 12/2006