Nokia 5510 - Page 69

PAMS Technical Documentation UI Module Troubleshooting
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• U301 MCU
• U101 DSP
• U201 NAND Memory
• U601 Audio Codec
• U602 Audio Routing Select
Diagnostic Tests:
• Check the Line-In jack has proper contact with the UI module.
• Check presence of VBAT, VBB and UC_VCC, DVCC, AVCC, CVCC (Table 7,
“UI module voltages,” on page 73)
• Check operating current during recording mode (Table 8, “UI current consump-
tion in normal conditons,” on page 73).
• Check presence of clock frequency 32.768kHz @ U301-Pin9 using oscillo-
scope (Figure 47, “MCU Clock Waveform – 32.768kHz,” on page 74).
• Check presence of clock frequency 11.9952MHz @ U101-Pin97 and U601-
Pin25 (Figure 48, “DSP Clock Waveform – 11.9952MHz,” on page 75).
• Connect Line-In jack and check signal line LIN_DET @ U301-Pin21 (Table 9,
“Accessories connection indication,” on page 73)
• Check the Audio Routing Select, U602-Pin10 and U602-Pin9 are routed cor-
rected (Table 10, “Audio routing select,” on page 73).
• Check for analog activities @ U601-Pin19 and U601-Pin20 using oscilloscope.
This check will verify that the music is successfully routed to the Codec.
• Check for digital activities @ U601-Pin6 using oscilloscope. This check will
verify that the Codec are sending digitized music information to the DSP.
• Verify recorded music file in the NAND using NAM.
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• U301 MCU
• U101 DSP
• U201 NAND Memory
• U601 Audio Codec