Nokia 6235 Baseband Description And Troubleshooting page 19

Nokia Customer Care
• Check Vout, Vflash1, and ACI Line. If not correct, check UEMEK under X-ray or
change part.
• Check for activity on the USB D+ and USB D – lines, if nothing check D2800
under X-ray or change part.
USD ESD Protection
Vout
USB Vbus (5V)
Issue 1 04/2005
VFlash1 (2.8V)
USB D+
USB D-
Figure 17: USB Chip and Diagram
©2005 Nokia Corporation
6235/6235i/6236i (RM-60)
Baseband Description and Troubleshooting
ACI
Company Confidential
_OE (1.8V)
USB D+ (3.3V)
USB D- (3.3V)
Page 19