Microsd - Nokia 6275 Baseband Description And Troubleshooting

6275/6275i (RM-154)
Baseband Description and Troubleshooting

MicroSD

The mobile terminal supports up to 2G byte on a MicroSD card. Check the following:
• Visual inspection of the Level Shifter and ESD ASIP.
• Power supplies VIO, VBAT, and VMSD.
• Micro SD control line activity.
• MMC_CLK, MMC_cmd, MMC_dat0 after the Level Shifter; if not okay, check the
Level Shifter and the D2800.
• MMC_CLK, MMC_cmd, MMC_dat0 after the ESD ASIP; if not okay, replace the
ESD ASIP or check the connector.
MMC_DAT0
MMC_CLK
MMC_CMD
Page 22
Figure 23: MicroSD troubleshooting points - part 1
Figure 24: MicroSD troubleshooting points - part 2
Company Confidential
Nokia Customer Care
Issue 1 - September 2006