Nokia 6255 Description And Troubleshooting page 22

6255/6255i6256/6256i (RM-19)
Baseband Description and Troubleshooting
• Ch1= PURX
• Ch2 = MBUS toggled three times for MCU initialization
• Ch3 = FBUS_TX low, MCU indicates that prommer has been noticed
• Ch4 = FBUS_RX
Page 22
Figure 11: Flashing, continued
©2005 Nokia Corporation
Nokia Customer Care
FLASH_2
Company Confidential
CH1 = PURX
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
M easure points
Production test pattern
(J396)
Issue 2 05/2005