Nokia RH-37 Series Rf Troubleshooting Instructions page 32

RH-37
6(b) - RF Troubleshooting Instructions
EDGE
Ensure that GMSK is ok.
Use Phoenix to select
TX_Data Type: All 1
EDGE: On
TX Power Level: 5
Ch661
Ensure Vbatt=3.6 V
Yes
Oscilloscope
C7702
C7711
VPCTRL_1800 1900
Yes
Spectrum analyzer
RF@Test-Jig
Pout
= +21.5 dBm, 1880 MHz
Yes
GSM 1900 TX
OK
Page 32
IREF_900
V = 1.83 Volt
Mode
V = 2.78 Volt
R7715 V= 2.7 V
Check PA N7700
No Check Power Loop
(TXC, RFin 1800 1900,
DET)
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Nokia Customer Care
Check
No Baseband
Issue 1 07/04