System Connector Lines; Battery Connector Lines; Mbus And Fbus - Nokia NKC-1X Series Technical Documentation Manual

NKC-1X
System Module

System Connector Lines

System Connector signals that have EMC protection
Protection type VIN
ferrite bead (600
/199MHz)
ferrite bead (420 X
/100MHz)
spark gaps
PWB capacitors
RC-circuit
capacitor to X
ground

Battery Connector Lines

BSI and BTEMP lines are protected by spark gaps and the RC-circuit (4k7 & 10n), in
which the resistors are size 0603.

MBUS and FBUS

The opening in the protective metal deck, underneath the battery, is so small that ESD
does not get into the MBUS and FBUS lines in the production test pattern.
Page 26
Table 4: System Connector lines
XMIXP XMICN
X X
X X
X X
X
X X
Nokia Corporation
CCS Technical Documentation
XEARP XEARN
X X
X X
X X
X X
X X
HEADINT MICP
X
X X
X X
X X
Issue 1 02/03