Nokia RM-840 User Manual

Table of Contents
General instructions for cellular RF troubleshooting......................................................................................... 4–5
Cellular RF key components.................................................................................................................................. 4–5
Cellular RF main troubleshooting ........................................................................................................................ 4–7
RF power supply self test troubleshooting......................................................................................................... 4–8
RF tuning and testing ........................................................................................................................................... 4–9
RF auto tuning and testing with Nokia Care Suite........................................................................................ 4–9
RF auto tuning procedure ............................................................................................................................... 4–9
Automatic RF testing with Nokia Care Suite............................................................................................... 4–11
Troubleshooting with Testing And Tuning Tool ........................................................................................ 4–13
Release variants information....................................................................................................................... 4–17
Antenna............................................................................................................................................................... 4–21
Antenna overview ......................................................................................................................................... 4–21
Main antenna functionality.......................................................................................................................... 4–21
Antenna troubleshooting............................................................................................................................. 4–21
FM radio troubleshooting (DS & SS).................................................................................................................. 4–22
FM radio troubleshooting............................................................................................................................. 4–22
FM radio headset troubleshooting .............................................................................................................. 4–25
Bluetooth Troubleshooting (DS & SS)............................................................................................................... 4–25
Bluetooth functional description (SS) ......................................................................................................... 4–25
Block diagram................................................................................................................................................ 4–26
Interface signals............................................................................................................................................ 4–26
Component placement ................................................................................................................................. 4–27
Symptom, Problem and Repair Solution..................................................................................................... 4–28
Test Coverage ................................................................................................................................................ 4–29
Test Procedure............................................................................................................................................... 4–29
Bluetooth troubleshooting .......................................................................................................................... 4–30
List of Tables
Table 4 Bluetooth Signal List............................................................................................................................. 4–26
List of Figures
Figure 12 3YK_30 Quark RF Rel5 RF Block............................................................................................................ 4–6
Figure 13 3yn_30 Rel4 RF block......................................................................................................................... 4–18
Figure 14 3Yn_30 Rel4 PWB layout ................................................................................................................... 4–19
Figure 15 3yk_30 Rel5 RF Block......................................................................................................................... 4–19
Figure 16 3yk_30 Rel5 PWB layout ................................................................................................................... 4–19
Figure 17 3ym_30 Rel6 RF block........................................................................................................................ 4–20
Figure 18 3ym_30 Rel6 PWB layout.................................................................................................................. 4–20
Figure 19 The version of the PWB layout......................................................................................................... 4–21
Figure 20 FM schematics (DS & SS).................................................................................................................... 4–23
Figure 21 FM components layout (DS & SS) ..................................................................................................... 4–24
Figure 22 Bluetooth block diagram.................................................................................................................. 4–26
Figure 23 Test points in Bluetooth ASIC circuit – BTHFMRDS4.4D.................................................................. 4–28
RM-839; RM-840; RM-841
Cellular RF troubleshooting
Issue 1 NOKIA INTERNAL USE ONLY Page 4 – 3
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Nokia RM-840 Specifications

General

Brand	Nokia
Model	RM-840
Category	Handhelds
Language	English