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Programmes After Market Services
TME-3 Series Transceivers
Disassembly and Troubleshooting
Issue 3 10/03 Nokia Corporation.
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
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Page 2 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
Table of Contents
Page No
Introduction to troubleshooting...................................................................................... 5
Disassembly of TME-3 .................................................................................................. 6
RF Troubleshooting ....................................................................................................... 9
Introduction to RF troubleshooting .............................................................................9
Component notes:...................................................................................................... 9
Component handling: ................................................................................................ 9
Measurement notes:................................................................................................... 9
RF Key component placement ...................................................................................10
RF Measurement points .............................................................................................11
GSM900 & GSM1800 Transmitter ...........................................................................12
General instructions for Transmitter (Tx) troubleshooting ..................................... 12
Transmitter troubleshooting diagrams ..................................................................14
Oscilloscope screen shots of transmitter signals ..................................................... 17
GSM900 & GSM1800 Receiver ................................................................................20
General instructions for Rx troubleshooting ........................................................... 20
LNA gainstep checking GSM900 & GSM1800 ...................................................24
Synthesizer .................................................................................................................25
General instructions for synthesizer troubleshooting.............................................. 25
Pictures of synthesizer signals................................................................................. 27
Baseband Troubleshooting........................................................................................... 30
Troubleshooting steps ................................................................................................30
Terminal is dead (1) ...................................................................................................31
Terminal is dead (2) ...................................................................................................32
Flashing fault (1) ........................................................................................................33
Flashing fault (2) ........................................................................................................34
Terminal jammed (1) .................................................................................................35
Terminal jammed (2) .................................................................................................36
SIM card fault ............................................................................................................37
Signal diagrams .........................................................................................................38
13 MHz clock .......................................................................................................... 38
26 MHz signal ......................................................................................................... 38
Sleep clock signal.................................................................................................... 39
1 MHZ Cbus clock signal........................................................................................ 39
Timing diagram .........................................................................................................40
Flash 1 signal........................................................................................................... 41
Flash 2 signal........................................................................................................... 42
Flash 3 signal........................................................................................................... 42
Issue 3 10/03 Nokia Corporation. Page 3
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
Table of Figures
Page No
Fig 1 SIM card cover removal .............................................................................................6
Fig 2 Screw removal ............................................................................................................6
Fig 3 Remove the B-cover. ..................................................................................................7
Fig 4 B-cover removed ........................................................................................................8
Fig 5 RL7 module component placement 1.........................................................................10
Fig 6 Measurement points, PA 1/2 ......................................................................................11
Fig 7 Measurement points, PA 2/2 ......................................................................................11
Fig 8 Tx troubleshooting......................................................................................................14
Fig 9 Hagar Troubleshooting diagram.................................................................................15
Fig 10 PA&Ant troubleshooting diagram............................................................................16
Fig 11 TXI_0, Tx on, Random data, Burst mode ................................................................17
Fig 12 TXQ_0, Tx on, Random data, Burst mode...............................................................17
Fig 13 900/1800 antsw tx contr, Tx on, burst mode ............................................................18
Fig 14 900/1800 PA bias, Tx on, burst mode ......................................................................18
Fig 15 900/1800 PA ctrl, Tx on, burst mode, high power level ..........................................19
Fig 16 Tx out signal, 900 band, burst mode, channel 37 .....................................................19
Fig 17 Receiver signal .........................................................................................................21
Fig 18 Troubleshooting diagram for GSM900 receiver ......................................................22
Fig 19 Troubleshooting diagram for GSM1800 receiver ....................................................23
Fig 20 Synthesizer troubleshooting diagram .......................................................................26
Fig 21 26MHz XO out .........................................................................................................27
Fig 22 13 MHz clock ...........................................................................................................27
Fig 23 4GHz VCO ctrl.........................................................................................................28
Fig 24 4GHz VCO ctrl ........................................................................................................28
Fig 25 4GHz VCO output, 1800 band, RX on, continuous mode .......................................29
Fig 26 Dead terminal, 1 ......................................................................................................31
Fig 27 Dead terminal ...........................................................................................................32
Fig 28 Flashing fault 1 .........................................................................................................33
Fig 29 Flashing fault 2 ........................................................................................................34
Fig 30 Terminal jammed (1) ................................................................................................35
Fig 31 Terminal jammed (2) ................................................................................................36
Fig 32 SIM card fault ..........................................................................................................37
Fig 33 13 MHz clock ...........................................................................................................38
Fig 34 26 MHz signal ..........................................................................................................38
Fig 35 Sleep clock signal .....................................................................................................39
Fig 36 1 MHZ Cbus clock signal.........................................................................................39
Fig 37 Timing diagram ........................................................................................................40
Fig 38 Flash 1 signal ............................................................................................................41
Fig 39 Flash 2 signal ............................................................................................................42
Fig 40 Flash 3 signal ............................................................................................................42
Page 4 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
Introduction to troubleshooting
The first thing to do is carry out a through visual check of the module. Ensure in particu-
lar that:
a) there are not any mechanical damages
b) soldered joints are OK
Issue 3 10/03 Nokia Corporation. Page 5
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
Disassembly of TME-3
1. Remove the lens.
Figure 1: Lens removal
2
1
2. Turn the device upside down and remove the two screws.
Figure 2: Screw removal l
Page 6 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
3. Remove the B cover.
Figure 3: Remove the B-cover.
Issue 3 10/03 Nokia Corporation. Page 7
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
4. Remove the data module from the A-cover
Figure 4: B-cover removed
NOTE: The screws require Torx6 screwdriver tip. Thecorrect tightening torque is 25Ncm.
Page 8 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
RF Troubleshooting
Introduction to RF troubleshooting
The RF-section of the RL7 module is build around one RF-ASIC (HAGAR, N600). For easier
troubleshooting, the instructions are divided into three sections: transmitter, receiver
and synthesizer.
Component notes:
Apart from key components described in this document here are several discrete compo-
nents (resistors, inductors and capacitors), the troubleshooting of which is done by
checking whether the soldering of each component is OK.
Capacitors can be checked for short circuits and resistors for value by means of an ohm-
meter, but be aware that in-circuit measurements must be evaluated carefully.
Before replacing HAGAR, please check following: are the supply voltages and serial com-
munication signals (coming from baseband to HAGAR) correct?
Please note that the grounding of the PA module is directly below the PA-module so it is
difficult to check or change.
Component handling:
Most RF semiconductors are static discharge sensitive! ESD protection must be taken
care of during repair (use ground straps and ESD soldering irons).
HAGAR and PA are moisture sensitive components; parts must be pre-baked prior to sol-
dering.
Measurement notes:
Measurements must be done using spectrum analyzer with high-frequency high-imped-
ance passive probe (LO-/reference frequencies and RF power levels) and oscilloscope
with a 10:1 probe (DC-voltages and low frequency signals)
Please be aware that all measured voltages or RF levels in this document are rough fig-
ures. Especially RF levels vary due to different measuring equipment or different ground-
ing of the used probe. When using RF probe usually a good way is to use metallic
tweezers to connect probe ground to PWB ground as close to measurement point as pos-
sible.
Issue 3 10/03 Nokia Corporation. Page 9
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
RF Key component placement
Figure 5: RL7 module component placement 1
External antenna Dual PA Dual coupler
connector/switch (under frame)
Internal antenna
Antenna switch
pad
Dual RX 1st SAW
PCN LNA
EGSM LNA
EGSM TX SAW
PCN TX balun
PCN RX 2nd SAW
EGSM RX 2nd SAW
HAGAR RFIC
VCO balun
26MHz VCTCXO
4GHz VCO
NOTE! You can remove (cut) the frame above the power amplifier, ex. PA exchange
Page 10 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
RF Measurement points
PA environment
Figure 6: Measurement points, PA 1/2
EGSM PA ctrl
EGSM PA bias PCN PA ctrl
PCN antsw tx ctrl
EGSM antsw tx ctrl
EGSM RX
EGSM PA in PCN RX
PCN PA in PCN RX 1st SAW out
EGSM RX 1st SAW out
V500, RFin
LNA_P
PCN PA bias V500, RFout
LNA_G
V550, RFin
LNAB_G
V550, RFout
LNAB_P
HAGAR environment below:
Figure 7: Measurement points, PA 2/2
VrefRF01
EGSM bal out VR6
VrefRF02
RX_I_in
EGSM LNA out RX_Q_in
PCN bal out 26MHz out
AFC
PCN LNA out VR3
VR4 VR5
PCN mod out 4GHz out
VR2
EGSM mod out
VR7
VCO ctrl
RESET SDATA TX_I_out
SCLK SLE TX_Q_out
13MHz clk VR1a
Issue 3 10/03 Nokia Corporation. Page 11
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
GSM900 & GSM1800 Transmitter
General instructions for Transmitter (Tx) troubleshooting
Connect the test jig to the PC with the DAU-9S cable or to the FPS-8 Flash Prommer
with a XCS-4 modular cable.
Make sure that you have the PKD-1 dongle connected to the PCs parallel port.
Connect DC power supply to module test jig with a suitable cable.
Attention: When repairing or tuning transmitter use external DC supply with at
least 3A current capability. Set the DC supply voltage to 13.5V.
Connect a RF- test cable (K-1888) to the external antenna connector and to measure-
ment equipment or at least 10dB attenuator, otherwise the PA may be damaged.
Normally Spectrum analyzer is used as measurement equipment. Another way is connect
RF-cable to the module test jig (MJS-46) RF connector to and to measurement equip-
ment or at least 10dB attenuator.
NOTE: Normally a Spectrum analyzer maximum input power is +30dBm. A 10dB attenua-
tor on Spectrum analyzer input must be used to prevent damage
Set the module in the test jig and start Phoenix service software.
Initialize connection to phone. (use FBUS driver when using DAU9S and COMBOX driver
when using FPS-8).
Select product from the menu.
File -> Choose product -> TME-3
From toolbar set operating mode to "Local"
Activate RF controls window from the menu
Maintenance -> Testing -> RF Controls
From the RF controls window
- Select band "GSM900" or "GSM 1800" (Default = "GSM900")
- Set Active unit to "Tx" (Default = "Rx")
- Set Operation mode to "Burst" (Default = "Burst")
- Set Tx data type to "Random" (Default = "All1")
Page 12 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
- Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band (Defaults)
- Set Tx PA mode to "Free" (Default)
- Set power level to 5 (Default = 19) on GSM900 or to 0 (Default = 15) on GSM1800
For transmitter schematics refer to the A3 size diagrams at the end of the manual.
Issue 3 10/03 Nokia Corporation. Page 13
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
Transmitter troubleshooting diagrams
g gFigure 8: Tx troubleshooting
Page 14 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
Figure 9: Hagar Troubleshooting diagram
Issue 3 10/03 Nokia Corporation. Page 15
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
Figure 10: PA&Ant troubleshooting diagram
Page 16 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
Oscilloscope screen shots of transmitter signals
Figure 11: TXI_0, Tx on, Random data, Burst mode
Figure 12: TXQ_0, Tx on, Random data, Burst mode
Issue 3 10/03 Nokia Corporation. Page 17
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
Figure 13: 900/1800 antsw tx contr, Tx on, burst mode
Figure 14: 900/1800 PA bias, Tx on, burst mode
Page 18 Nokia Corporation. Issue 3 10/03
TME-3
PAMS Technical Documentation Disassembly and Troubleshooting
Figure 15: 900/1800 PA ctrl, Tx on, burst mode, high power level
Figure 16: Tx out signal, 900 band, burst mode, channel 37
Issue 3 10/03 Nokia Corporation. Page 19
TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
GSM900 & GSM1800 Receiver
General instructions for Rx troubleshooting
Connect test jig to the PC with DAU9S cable or to FPS-8 Flash Prommer with XCS-4
modular cable.
Make sure that you have PKD-1 dongle connected to the PCs parallel port.
Connect DC power supply to module test jig with a suitable cable.
Set the DC supply voltage to 13.5 V.
Connect an RF-cable to the module test jig (MJS-63) RF connector and to RF signal gen-
erator.
Set the phone module to test jig and start Phoenix service software.
Initialize connection to phone. (use FBUS driver when using DAU9S and COMBOX driver
when using FPS-8)
Choose product from the menu
File -> Choose product -> TME-3
From toolbar set operating mode to "Local"
Activate RF controls window from the menu
Maintenance -> Testing -> RF Controls
From the RF controls window
- Select band "GSM900" or "GSM 1800" (Default = "GSM900")
- Set Active unit to "Rx" (Default = "Rx")
- Set Operation mode to "Continuous" (Default = "Burst")
- Set AGC to "8: FEG ON + 46 dB (Default = "8: FEG ON + 46 dB")
- Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band (Defaults)
Apply 942.46771 MHz (channel 37 + 67.710 kHz offset) or 1842.86771 MHz (channel
700 + 67.710 kHz offset) ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo