Bluetooth Troubleshooting; Fig 13 Bluetooth Troubleshooting - Nokia RM-14 Rf Troubleshooting And Manual Tuning

RM-14
RF Troubleshooting and Manual Tuning
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Bluetooth troubleshooting

Phoenix normal mode: Tx data 1 ch. 39 (2441 MHz approx. 1 MHz BW).
BC02 Bluetooth control. Options: Internal gain = 52
Spectrum analyzer: RBW = 500 kHz, VBW = 500 kHz,
center = 942 Mhz and span = 20 Mhz.
Measure N130 BT supply voltage = 2.8V (C6036).
Measure N6030 VDD-ANA voltage regulator output = 1.8V (C6031)
Measure a) N6030 VDD_VCO supply voltage = 1.8V (C6048)
b) VDD_MEM supply voltage = 1.8V
c) Rx/Tx supply voltage = 1.8V (C130)
Measure SYSCLK voltage = 800 mVpp (26 MHz) 1.8 VDC (C6038).
Measure N6030 XTAL_IN
voltage = 0.6Vpp square wave (R6042)
Measure RF level = -15 dBm at a TX_A and TX_B,
(C6046) at both terminals
Measure RF level = -18 dBm at Z6030 SAW filter output.
ISSUE 1 11/04
Figure 13:Bluetooth troubleshooting
Bluetooth troubleshooting
OK
OK
OK
OK
OK
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COMPANY CONFIDENTIAL
Copyright © 2004 Nokia. All Rights Reserved.
NOK
Replace N6031
NOK
NOK
NOK
NOK
Measure D6030 supply voltage = 2,8V
at C6040
Check L6031, L6032. If passive components
OK, replace D6030.
NOK
Check L6031, L6032. If passive componen
OK, replace N6030
NOK
Replace Z6030
Nokia Customer Care
Replace N6030
Check L6033
Check L6033
and and L130
and R6034
Check C6038 and go to
Synthesizer
troubleshooting.
NOK
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