Nokia 2650 Service Manual 07 RH53_54 troubleshoot
Nokia Customer Care
RH-53/54
7-T roubleshooting
Instructions
ISSUE 1 09/2004 Copyright © 2004 Nokia Corporation. All Rights Reserved.
RH-53/54
Nokia Customer Care 7-Troubleshooting Instructions
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Table Of Contents
Page No
Baseband Troubleshooting................................................................................ 7
Baseband test points ......................................................................................... 7
Troubleshooting diagrams ................................................................................. 8
Phone is dead.................................................................................................... 9
Flash programming does not work................................................................... 10
Power does not stay on or phone is jammed................................................... 11
Display information : "Contact Service"............................................................ 12
The phone does not register to the network, or the phone cannot make a call 13
Charging troubleshooting................................................................................. 14
Audio troubleshooting 1, 2............................................................................... 16
Audio troubleshooting 3: Headset does not work ............................................ 17
Upper block failures.......................................................................................... 18
Introduction to RH-53/54 RF Troubleshooting ...............................................23
General description of the RF circuits............................................................ 24
Receiver signal path ........................................................................................ 24
Transmitter signal path .................................................................................... 24
PLL................................................................................................................... 25
RF Key component placement......................................................................... 28
Troubleshooting................................................................................................ 29
Common circuit................................................................................................ 29
Power Supply Configuration ..........................................................................29
General instructions for Synthesizer troubleshooting ...................................... 31
26 MHz Reference Oscillator ( VCXO ) ........................................................... 31
Example Signal Measured at VCXO output (R420) ....................................... 32
VCO ...............................................................................................................32
Troubleshooting chart for the Synthesizer ....................................................... 33
Measurement points for the Synthesizer ......................................................... 34
Receiver Troubleshooting............................................................................... 37
Front End Module (FEM) control signals ......................................................... 37
Renesa FEM logic ..........................................................................................37
RFMD FEM logic ............................................................................................37
Measurements points....................................................................................... 38
Measurement points for the receiver .............................................................38
RH-54 Receiver ............................................................................................... 40
General Instructions for GSM850 RX Troubleshooting .................................. 40
General Instructions for GSM1900 RX Troubleshooting.................................. 43
RH-53 Receiver ............................................................................................... 46
General Instructions for GSM900 RX Troubleshooting .................................. 46
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General Instructions for GSM1800 RX Troubleshooting ................................ 48
RH-53/54 Transmitter Troubleshooting........................................................... 53
Measurement points for the transmitter ........................................................53
General instructions for TX troubleshooting ...................................................54
Troubleshooting chart for GSM900 transmitter .............................................. 56
Logic signals for the Front End Module ......................................................... 57
Renesa FEM logic ..........................................................................................57
RFMD FEM logic ............................................................................................58
Analog Power control signals (TXC, VPC, VDET) .........................................58
I/Q signals ...................................................................................................... 60
Alignment........................................................................................................... 61
Manual alignment with Phoenix ....................................................................... 61
RX calibration................................................................................................... 61
RX Band Filter Response ................................................................................ 64
Tx Power tuning............................................................................................... 64
I/Q tuning ......................................................................................................... 66
RF control ........................................................................................................ 69
Autotune (RH-53 with CMU200) .......................................................................70
File adjustments............................................................................................... 70
Phoenix setup.................................................................................................. 70
List of Figures
Page No
Fig 1 BB test points...............................................................................................7
Fig 2 BB test points 2............................................................................................8
Fig 3 Phone is dead troubleshooting..................................................................... 9
Fig 4 Flash programming troubleshooting............................................................. 10
Fig 5 Phone jammed troubleshooting ................................................................... 11
Fig 6 Troubleshooting when Contact Service message seen............................... 12
Fig 7 No call troubleshooting................................................................................. 13
Fig 8 Phone is OFF:no current from charger ........................................................ 14
Fig 9 Display info:charger connected, not charging.............................................. 15
Fig 10 Microphone does not work.........................................................................16
Fig 11 Top: Earpiece does not work ..................................................................... 16
Fig 12 Headset does not work .............................................................................. 17
Fig 13 Vibra troubleshooting ................................................................................. 20
Fig 14 Receiver signal path................................................................................... 24
Fig 15 Transmitter signal path............................................................................... 25
Fig 16 Frequency plan .......................................................................................... 27
Fig 17 RF key component placement ................................................................... 28
Fig 18 Power supply configuration........................................................................29
Fig 19 UEM measuring points.............................................................................. 30
Fig 20 Measured signal at VCXO output............................................................... 32
Fig 21 Troubleshooting chart for synthesizer........................................................ 33
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Fig 22 Measurement points for Synthesizer.......................................................... 34
Fig 23 Measurement points for the VCO............................................................... 35
Fig 24 Measurement points for the FEM............................................................... 38
Fig 25 RX interface points between N600/SAW filters.......................................... 38
Fig 26 Serial Bus interface measurement points .................................................. 39
Fig 27 I/Q measurement points............................................................................. 39
Fig 28 RF controls................................................................................................. 40
Fig 29 Troubleshooting chart for GSM850 receiver ..............................................41
Fig 30 Measuring with oscilloscope ...................................................................... 42
Fig 31 Control values............................................................................................ 43
Fig 32 Troubleshooting chart for GSM1900 receiver ............................................44
Fig 33 Measuring with the oscilloscope ................................................................ 45
Fig 34 Control values............................................................................................ 46
Fig 35 Troubleshooting chart for GSM900 receiver ..............................................47
Fig 36 Measuring with oscilloscope ...................................................................... 48
Fig 37 Rf controls..................................................................................................49
Fig 38 Troubleshooting chart for GSM1800 receiver ............................................50
Fig 39 Measuring with oscilloscope ...................................................................... 51
Fig 40 Front End Module FEM..............................................................................53
Fig 41 MjoelnerN600 test points .......................................................................... 53
Fig 42 TXP and TXC test points............................................................................ 54
Fig 43 Control values............................................................................................ 55
Fig 44 Troubleshooting chart for GSM900 transmitter.......................................... 56
Fig 45 Signals .......................................................................................................57
Fig 46 Power control signals.................................................................................59
Fig 47 RX calibration............................................................................................. 61
Fig 48 Calibration tuning ....................................................................................... 62
Fig 49 Calibration tuning ....................................................................................... 62
Fig 50 Calibration tuning ....................................................................................... 63
Fig 51 Calibration tuning ....................................................................................... 63
Fig 52 TX tuning....................................................................................................64
Fig 53 TX tuning....................................................................................................64
Fig 54 TX tuning....................................................................................................65
Fig 55 TX tuning....................................................................................................65
Fig 56 TX tuning....................................................................................................66
Fig 57 i/Q tuning....................................................................................................67
Fig 58 I/Q tuning.................................................................................................... 67
Fig 59 I/Q tuning.................................................................................................... 68
Fig 60 I/Q tuning.................................................................................................... 68
Fig 61 I/Q tuning.................................................................................................... 69
Fig 62 RF controls................................................................................................. 69
Fig 63 Phoenix-GPIB card .................................................................................... 70
Fig 64 Set loss ......................................................................................................71
Fig 65 Set loss 2 ................................................................................................... 71
Fig 66 Set loss 3 ................................................................................................... 72
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Baseband Troubleshooting
■ Baseband test points
Figure 1:BB test points
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Figure 2:BB test points 2
■ Tr oubleshooting diagrams
INOTE : Since both D200 (UEM) and D400(UPP) are underfilled, they can not be replaced. If
either D200 or D400 is defective, the whole PWB has to be discarded.
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■ Phone is dead
This means that the phone do not draw any current at all when supply is connected and/or
powerkey is pressed.
It is assumed that the voltage supplied is 3.6 VDC. The UEM will pre vent any functionality what
so ever at battery/supply levels below 2.9 VDC.
Figure 3:Phone is dead troubleshooting
Phone is dead
Yes
X105
VBAT = 3,6VDC
Yes
C103
L260,L261,L262,L263,L264,L265
C260,C261,C262,C263,C264,C265
Voltage = 3,6VDC
Yes
J404
Sleep-clock is
32.768 kHz, 1,8Vpp
Yes
J402
PURX = 1,8VDC,
1 sec. after power-key
is pressed
Yes
C227
VR3 = 2,78VDC
No
No
No
No
No
Check :
X105
Check :
C103
L260,L261,L262,L263,L264,L265
C260,C261,C262,C263,C264,C265
Check :
B200, C209, C210, PW B. Else
defective D200*
Check :
PWB.
Else defective D200*
Check :
C227, PWB.
Else defective D200*
Yes
26 MHz clock min. 300mVACpp,
R426
probe Cin=10-13 pF/10M
Yes
No
Check :
C227, C420, R420, PWB.
Else defective D200*
Check :
D450 (Flash).
Else defective D200*
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■ Flash programming does not work
The flash programming can only be done via the pads on the PWB (J396).
In case of Flash failure in FLALI station, problem is most likely related to SMD problems. Pos-
sible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH). Missing or misaligned components.
In flash programming error cases the flash prommer can give some information about a fault.
The fault information messages could be:
- Phone doesn't set FBUS_TX line low
Because of the use of uBGA components it is not possible to verify if there is a short circu it in
control- and address lines of MCU (UPP) and memory (flash).
Figure 4:Flash programming troubleshooting
Flash prgramming
do not work
Error fro m p ro mmer:
"Phone doesn't set
FBUS_T X line low"
Yes
J396, R108
Check connection between
pad 1,2 & 3 on J396
and R108
Yes
J409, J410, J411, J412
Voltage level at 1,8VDC
Yes
Try re a d in g MCU ID
with Phoenix.
Reading OK?
Yes
Try reading Flash ID
with Phoenix.
Reading OK?
No
No
No
No
Check :
R108, PW B
Check :
PWB.
Else defective D200*
Check :
PWB.
Else defictive D400*
Check :
Replace D450
Yes
Reflash phone
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■ Power does not stay on or phone is jammed
If this kind of failure is presenting itself immediately after FLALI, it is most likely caused by
ASICs missing contact with PWB.
If for some reason the MCU does not service the watchdog register within the UEM, the operations watchdog will run out after approximately 32 seconds. Unfortunately , the service routine
can not be measured.
Figure 5:Phone jammed troubleshooting
Power doesn't stay on,
or phone is jammed
J404
Sleep clock = 32.768 kHz,
1.8Vpp
Yes
J402
PURX = 1,8VDC,
1 sec. after power-key i s
pressed
Yes
UI functionality,
and keys react
to pressure?
Yes
R426
26 MHz clock min.
300mVACpp,
probe Cin=10-13 pF/10M
No
No
No
No
Check :
B200, C209, C210, PW B.
Else defective D200*
Check :
PWB.
Else defictive D200*
Check :
D450, Keymat,
Lightguide, PWB .
Else defective D400*
Check :
C420, C426, R420,
R426, N600(Mjoelner)
Yes
Reflash phone
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■ Display information : "Contact Service"
This error can only happen at power up where several self-tests is run. If any of these test cases
fails the display will show the message: "Contact Service".
It's individual test cases so the below lineup of error hunting's has no chronological order . Use
common sense and experience to decide which test case to start error hunting at.
Figure 6:Troubleshooting when Contact Service message seen
Display shows
"Contact Service"
Yes
EarDa & MicDa
between
UPP and UEM?
MBUS interface
between
UPP and UEM?
AuxDa & UEMInt
between
UPP and UEM?
SleepX & SleepClk
between UPP & UEM?
TXI/QD & RXI/QD?
SIM interface between
UPP & UEM
No
Check :
PWB.
Else defective D200*
or D400*
Key is stucked
Flash checksum
y ASIC version vs. compilation flag, PMM checksum
y PMM validity
y Warrenty Information State
y SIM-Lock
Check :
A-face, domesheet, PWB.
Reflash phone
Check :
PWB.
Else defective D450 (FLASH)
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■ The phone does not register to the network, or the phone cannot make a call
If the phone doesn't register to the network, the fault can be in either BB or RF . Only few signals
can be tested since several signals is 'burried' in one or more of the inner layers of the PWB.
First of all check that SIM LOCK is not causing the error by using a Test-SIM card and connect
the phone to a tester.
Figure 7:No call troubleshooting
Phone do not register to
network
or phone cannot make a call
C222, C223, C224, C225,
C226, C227
Voltage = ~2,78VDC
All during GSM frame-
call mode.
Use TXP on C646 as trigger
Yes
C230, C231
Voltage = ~1,35VDC
All during GSM frame (call mode)
Use TXP on C646 as trigger
Yes
J421, J422, J423
Check RF serial bus during
GSM-frame :
Logic HIGH = 1,8VDC
Logic LOW = 0V DC
RFBUSC LK (J421),
RFBUSD A (J422),
RFBUSEN1X (J423)
Yes
R601, R603
Check analog signals during
GSM-frame (RX slot):
RXIP/N (R601) = 0-1,45VDC
RXQP/N (R603) = 0-1,45VDC
Check :
No
C222,C223, C224, C225,
C226, C 227 , P WB .
Else defective D200 or D400*
Check :
No
C230, C 231 , P WB .
Else defective
D200* or D400*
Check :
No
Else defective D200*
Check :
No
Else defective D200*
PWB.
or D400*
PWB.
or D400*
Yes
R610, R611
Check analog signals during
GSM-frame (TX slot):
TXIP/N (R610) = 1-1,75VDC
TXQP/N (R611) = 1-1,75VDC
Yes
No
Check :
R610, R 611 ,P WB .
Else defective D200*
or D400*
Check RF
ISSUE 1 09/2004 COMPANY CONFIDENTIAL 13
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■ Charging troubleshooting
Figure 8:Phone is OFF:no current from charger
Phone is OFF - battery is
completely empty
(<=3,1VDC)
and no current from
charger when connected
RH-53/54
L100
VCHAR > 2,1VDC
Yes
Defective D200*
Phone is ON or OFF - battery
nominal voltage (~3,6VDC)
and no current from
charger when connected
L100
VCHAR > 3,6VDC
No
No
Check :
F100, L100, V100, C100,
R200, System-connector.
Check :
F100, L100, V100, C100,
R200, System-connector.
Yes
Defective
D200 or D400*
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Figure 9:Display info:charger connected, not charging
Display info when
charger is connected :
"Not charging"
R206
Voltage on R206 towards
D200 is ~0,8VDC
when power is connected.
Yes
R207
Voltage (use scope) on R207
towards D200 is ~0,9VDC at
peak.
No
No
Check :
X105, R202, R206, C240.
Check :
X105, R202, R207, C220.
Yes
R200
Voltage on R200 towards
D200 same as VBAT voltage
Yes
R200
Voltage rises slowly on
R200 towards D200 when
charger is connected.
Yes
Check :
PWB
No
No
Check :
R200, PWB.
Else defective D200*v
Check :
PWB.
Else defective D200*
ISSUE 1 09/2004 COMPANY CONFIDENTIAL 15
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■ Audio troubleshooting 1, 2
Figure 10:Microphone does not work
Microphone do not work and
the isn't any mechanical
problem
RH-53/54
Z100
Check Z100 is
working correctly
(no short/open-circuit)
No
Replace :
Mic and micboot
Error still present
R165
Check voltage level on
R165 towards UEM (bias)
= 2,1V
Yes
No
R165, C168, PWB.
Else defctive D200*
R153
Check voltage level on
R153 towards mic-lines (bias)
= 1,0V - 1,4V
No
R153, R157,C151, C152,
C153, C154,R171, PWB.
Figure 11:Top: Earpiece does not work
Headset earpiece do not
work and the isn't any
mechanical problem
Replace :
Z100
Check :
Check :
R183, Z102
Check R183, Z102 is
working correctly
(no open-circuit)
No
Replace :
C183 and/or Z102
Defective D200*
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■ Audio troubleshooting 3: Headset does not work
Figure 12:Headset does not work
Headset microphone do not
work and the isn't any
mechanical problem
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Z101
Check Z101 is working
correctly
(No short/open circuit)
Yes
R151
Check voltage level on R151
towards UEM (bias)
= 1,0V - 1,4V
Yes
R151
Check voltage level on R151
towards UEM (bias) = 1,0V -
1,4V
Check XMIC line to UEM
(D200)
Error still present
Defective D200*
No
No
No
Replace :
Z101
Check :
R166, R151, C171
Check :
R156, C170, C174, C172,
R169
ISSUE 1 09/2004 COMPANY CONFIDENTIAL 17
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Upper block failures
All checks can be done while the phone is partially disamsembled (no need for full reasembly
inbetween debugging steps):
SIM failure (including insert SIM faults)
1. Flex B2B connector pressed in?
2. Change LCD can assembly (for new flex) works?
3. C314 (VSIM cap) short circuitting?
4. C313 (SIMIO cap) short circuitting?
5. Voltages (SIM startup sequence)? Board to Board connector pin17
6. Change main PWB (UEM)?
The hardware of the SIM interface from UEM (D200) to the SIM co nnector can be teste d wit hout a SIM card. When the power is switched on the phone first check for a 1,8V SIM card and
then a 3V SIM card. The phone will try this four times, whereafter it will display ”Insert SIM
card”.
VSIM – Board to board connector pin 17
Reset – Board to board connector pin 29
Clock – Board to board connector pin 20
Data – Board to board connector pin 19
Check for SIM voltage during power-up
Ch1 : VSIM
Ch2 : RESET
Ch3 : CLOCK
Ch4 : DATA
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The error ”SIM card rejected” means that the A TR message received from SIM card is corrupted, e.g. data signal levels are wrong. The first data is always ATR and it is sent from card to
phone.
For reference a picture with normal SIM power-up is shown below.
Normal SIM power-up sequence
Ch1 : VSIM
Ch2 : RESET
Ch3 : CLOCK
Ch4 : DATA
Vibra failure
1. Flex B2B connector pressed in?
2. Change C2 cover assembly(new vibra)/Vibra works?
3. Change LCD can assembly (new flex) works?
4. Change main PWB (UEM)?
ISSUE 1 09/2004 COMPANY CONFIDENTIAL 19
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Figure 13:Vibra troubleshooting
Start
Wrong setting or
software error.
Contact problem.
Mechanical problem
Is there any
vibration?
Yes
No
- counterweight is
blocked
Defective o r missing
vibra.
Defective UEM.
RH-53/54
Is there
sufficient
vibration?
Yes
Vibra is
constantly
switched
on?
No
Intermittent
vibration?
No
Acoustical
noise?
No
Yes
Yes
Software error
Contact problem.
Defective vibra.
Defective UEM.
Software error.
Defective UEM.
Short circuit.
Yes
Bad connection.
Defective vibra.
Defective vibra.
Mechanical problem
- counterweight hits
LCD can/C2 cover
Loose parts in
phone.
Speaker failure
1. Flex B2B connector pressed in?
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Display failure
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2. C2 cover mounted correct (red snap not vissible)?
3. Check if system connector is misplaced slightly?
4. Check for ”headset inserted symbol” in display?
5. Change speaker chamber/antenna works?
6. Change LCD can assembly (for new flex) works?
7. Change main PWB (UEM)?
1. Flex B2B connector pressed in?
2. Display B2B connector pressed in (press through hole in C2 cover assembly)?
3. Change display works?
4. Change LCD can assembly (for new flex) works?
5. R316 (LCDRESETX) missing?
Fold detection failure
1: Check if magnet is mounted on bottom side of C2 cover assembly
(with a spare screw)
2: Check if N306 (Hall IC) is mounted?
Note:
Don’t try and rework flex!! Handling is likely to cause the solder pads to brake or disconncect
from track, which cannot be repaired in a reliable wa y by resoldering. Only reliable repair option
is to change the flex (LCD can assembly)!
ISSUE 1 09/2004 COMPANY CONFIDENTIAL 21
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