User Guide

CC Technical Documentation Troubleshooting - RF (Part 1)
RM-11
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 23
Supply Lines Distribution by RF Components
12 Supply Lines Resistance to Ground
Note: Always measure resistance with the phone powered OFF.
Component Part Number Supply Lines
Alfred N750 VR5
Batman N701 VR5, VR7, VIO, V
REF
RF1
Robin N601 VR2, VR3, VR6, VIO, VR1B, V
REF
RF2
Tomcat N603 VBAT
PA N801 VR2, VBAT
PA Detector N806 VR2
VCTCXO G503 VR3, VR1A
UHF PLL N507 VIO, VR1A
VCO G502 VR4
VCO Buffer N502 VR6
Supply Line Resistance Components
VR1A 100kΩ to GND Synthesizer (VCTCXO, UHF PLL)
VR1B 29kΩ to GND Robin
VR2 4.4kΩ to GND Robin, PA, PA Detector
VR3 4.5kΩ to GND Robin, VCTCXO
VR4 4.7kΩ to GND VCO
VR5 3.2~5.1Ω to GND Alfred
VR6 39kΩ to GND Robin, VCO Buffer
VR7 38kΩ to GND Batman
VIO 15kΩ to GND Batman, Robin, UHF PLL
V
REF
RF1 45kΩ to GND Batman
V
REF
RF2 46kΩ to GND Robin
VCORE 4.5kΩ to GND UEM, UPP