Tx Dc Test Points - Nokia RH-66 Troubleshooting Manual

Nokia Customer Care

TX DC Test Points

1
Table 4 shows the Tx DC test points shown in
Table 4: Tx DC Test Points and RF Supply Line Resistance to Ground
Test
Description
Point
1 VIO
2 VR3
3 VR7
4 VR5
5 VR4
6 VR6
7 VR2
8 VR1B
Issue 1 03/2005
Figure 8: Bottom side Tx DC test points
Value
1.8 V
2.78 V (synthesizer)
2.78 V (Rx)
2.78 V (Rx)
2.78 V (Rx)
2.78 V (Tx)
2.78 V (Tx)
4.75 V (Tx)
©2005 Nokia Corporation
2115i/2116/2116i (RH-66)
RF Description and Troubleshooting
4
6
8
Figure 8.
RF Supply Lines Resistance to Ground*
Ω
>1M to ground
Ω
>500k to ground
Ω
~500k to ground
Ω
3.2~5.1 to ground
Ω
4.3k to ground
Ω
300k to ground
Ω
7.5k to ground
Ω
>100k to ground
Company Confidential
2
3
5
7
9
10
N7100, N7000, UHF PLL
VCTCXO
N7100
N7160, N7100
VCO
N7000
N7000, PA detector
N7000
Page 13