NPD-1
Troubleshooting — RF
CCS Technical Documentation
Page 40
Nokia Corporation Confidential
Issue 1 11/2002
RF Power Supplies
Table 12: DC supplies for RF circuitry
Supply
Voltage
Supplied components
Probing location
VR1A
4.75
VCTCXO, UHF PLL, Charge Pump
figure 9
VR1B
4.75
Robin
Not accessible
VR2
2.78
Robin, Power Detector
figure 9
VR3
2.78
Robin, VCTCXO
figure 9
VR4
2.78
UHF PLL
figure 9
VR5
2.78
Batman
figure 9
VR6
2.78
UHF LO Buffer
figure 9
VR7
2.78
Batman
figure 9
VIO
1.8
Robin, UHF PLL
figure 9
VRX
2.78
Alfred
figure 9
VPLL
2.78
UHF PLL
figure 9
VBAT
3.1-4.2
PA
figure 9