Accessory Detection - Nokia 3155i Troubleshooting Manual

3155/3155i (RM-41), 3152 (RM-61)
Baseband Description and Troubleshooting

Accessory Detection

Figure 36 displays how the mobile terminal detects accessories. Dummy accessories pull
down to GND ACI Line. Smart accessories pull down ACI line with a 56K Ohm resistor
allowing communication between accessory and UEMEK.
Page 36
VFlash1 (2.78V)
Figure 36: Accessory Detection Diagram
©2005 Nokia Corporation
VAUX2 (2.78V)
Smart accessories detection
Company Confidential ISSUE 1 07/2005