Cell Power Amplifier; Cell Pmic - Nokia RH-77 Troubleshooting Manual

2118 (RH-77)
RF Description and Troubleshooting
Tx Tuning
AGC Step
Tx AGC (6)
Tx AGC (7)*
*Not an actual FlaLi tuning PDM. The PDM produces approximately 25 dBm at the antenna
connector.

Cell Power Amplifier

The power amplifier (PA) has the DC/DC converter (PMIC device), which controls the
transmitter. The following tables show the circuits that have an effect on the transmitter
path and how to troubleshoot them.
Mode Name
Gain mode 0 V0
Gain mode 1 V1
Gain mode 3 V2
Gain mode 2 Bypass
Gain mode 0 V0
Gain mode 1 V1
*Not an actual FlaLi tuning PDM. PDM to produce approximately 25 dBm at
antenna connector.

Cell PMIC

The following tables show the PMIC troubleshooting information.
Page 12
Table 2: Tx AGC Tuning Steps (Continued)
Tx AGC
PDM Value
-94
-280*
Table 3: PA Power and Gain Measurements
Power Amp
Input Test Point
pin3-Z601
Table 4: PA Power and Gain Specifications
Power Output
Range
up to 6
6 to 11
Not used
11 up
up to 6
6 to 11
Table 5: PMIC Setup
Mode Tx
Local On
©2005 Nokia Corporation
Target Low
Power Limit
15 6
25 21
Power Amp
Output Test Point
left-R814
Nominal Gain Vcc Range
23.8 0.75- 0.88
25.2 1.125- 1.375
Not used 2 - 2.5
29 3 - 4
23.8 0.75- 0.88
25.2 1.125- 1.375
Rx Band
On CELL
Company Confidential
Nokia Customer Care
High
Limit
24
27
Vcc Test Point
C806
C806
C806
C806
C806
C806
Issue 01 04/2005