User Guide

PAMS Technical Documentation UI Module Troubleshooting
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Diagnostic Tests:
• Replace a good display module and verify.
• Visual inspection of the 36-pin B2B connector.
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Diagnostic Tests:
• Check VBAT with DVM
• Replace failed LED
• Visual inspection of the 36-pin B2B connector.
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Diagnostic Tests:
• Check VBAT with DVM
• Replace failed LED
• Visual inspection of the 36-pin B2B connector.
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Diagnostic Tests:
• Check that the dome sheet is properly aligned with the keypads.
• Ensure that there are no foreign particles on the keypads
• Check side keys SW753, SW754, SW755, and SW756. Ensure they are
intact.
• Check presence of VBAT, VBB and UC_VCC @ U501 (Table 7, “UI module