Vibra Troubleshooting; Connectivity Module Troubleshooting; Introduction To Connectivity Module Troubleshooting - Nokia RM-626 Service Manual

RM-626
BB Troubleshooting and Manual Tuning Guide

Vibra troubleshooting

Troubleshooting flow

Connectivity module troubleshooting

Introduction to connectivity module troubleshooting

The BOB1.0M-b module supports WLAN, BT and FMRX. From a troubleshooting point of view, WLAN is tested
separately, but BT and FMRX are checked in parallel.
REFOUT_EXT1 single ended 38.4 MHz analog clock from Linko RF is provided to BOB1.0M-b. The clock request
for the reference clock in the BOB1.0M-b module is shared between WLAN and BT blocks. When either system
requires a clock, this signal will be active. The CLK_REQ is connected to ExtSysClkReq pin of RAPU. The SLEEPCLK
input of 32.768 KHz clock from EM ASIC is used for power management and for FM in low power mode. The
internal SMPS supplies the whole BOB1.0M-b solution from the phone battery supply, VBAT, apart from VIO
which is needed for interface signal reference levels.
The following figure shows a top level block diagram of the BOB1.0M-b module.
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