RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
Service Tools
■ List of service tools
The table below gives a short overview of service tools that can be used for testing, erro r analysis and repair of product RM-127, refer to various set-ups.
10pcs 2A fuse for MJ-22 module jig
10pcs Test pins for MJ-22 module jig
10pcs Test pins for MJ-22 module jig
1pc Wing screw M3x20 for MJ-22 module jig
10pcs Test pins for SF-17 POS flash adaptor
10pcs Flash interface pins for DA-61 docking station adaptor
10pcs SIM interface pins for DA-61 docking station adaptor
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ JVB-1 docking station with DA-61 docking station adapter
The JVB-1 docking station has been designed for calibration and software update use. The DA61 docking station adapter makes signal connections to the phone. JVB-1 and DA-61 are used
as one unit.
JVB-1 main electrical functions include the following:
•adjustable VBATT calibration voltage, current measurement limit voltage
“VCHAR”, current measurement calibration “ICHAR”
•adjustable ADC calibration voltage via BTEMP and BSI signal
•BTEMP and BSI calibration resistor
•signals from FBUS to the phone via parallel jig
•control via FBUS or USB
•Flash OK/FAIL indication
In calibration mode JVB-1 is powered by external power supply 11-16V DC. In flashing power
for the phone can be taken from FPS-8 or external power supply 11-16V DC.
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■ DA-61 docking station adapter
Docking station adapter DA-61 with special white adapter is designed for assembled RM-127
phones. The docking station adapter supports testing, flashing, energy management calibration. If used in conjunction with the RF-coupler SA-25, also RF function testing is possible.
Features include:
•compatible for JBV-1
•easy phone attachment and detachment
•reliable phone locking
•switch for reliable detection of phone attachment
•replaceable test pins
•internal SIM holder with interface to phone SIM reader
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ SA-25 antenna coupler
RF antenna coupler for use with the docking station adapter (DA-61).
Extends the docking station adapter to allow RF function tests in GSM bands 850, 900, 1800
and 1900 MHz.
Features include:
•easy attachment to DA-61 without use of tools
•reliable RF connection to phone module under test
•low attenuation and small “ripple” over the width of each GSM band
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
Remove the four screws fixing the PWB by using Torx T6 screw driver. These screws are too
short, therefore four longer screws are delivered together with the coupler.
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ SF-17 CCS POS flash adapter
Point of sales flash adapter for RM-127 phones.
SF-17 establishes a simple environment for SW update purposes and connects to the same
flash test pattern and the phone battery contacts.
Features include:
•flashing and testing of the attached phone
•overvoltage and reverse polarity protection of adapter and attached phone
•green LED: power supply valid and attached to the phone (3.5V<Vcc<7V)
•red LED: overvoltage condition, phone power supply disconnected (Vcc>7V)
•shielded 10-pin Western connector towards flash equipment or PC
•3mm DC-jack for phone and adapter power supply
•phone battery contacts (VCC, GND, BSI)
•flash test pattern pins
View of SF-17
Spare parts
There are no serviceable parts inside SF-17, and SF-17 is not de signed for disassembly. Only
serviceable part are the spring loaded test pins that can be replaced without soldering and disassembly. Used test pin type is SX-1-J-2.0-G from manufacturer IDI.
Bent pins can be extracted from adapter’s receptacle using a tool. T o rn off pins can be replaced
using a slowly spinning 0.8 mm. For more detail, please refer to th e Service Tool Troubleshooting section.
RM-127
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Communication and status LED’s
•green: Power supply
•green: MBUS activity
•orange: FBUS activity
•jumper to disable LED’s for precise phone module current consumption measurements
Spare parts
•spring loaded test pins (used in upper part, can be replaced by soldering)
- Test pins (10pcs / plastic bag)
•both ends spring loaded test pin (used in lower part, can be replaced by hand after
disassembly of lower PCB)
- Test pins (10pcs / plastic bag)
•fuse inside holder
•wing screw M3x20
Usage hints
•Before first use, verify setting of power supply jumper on the rear (=bottom PCB)
of the jig; if power supply is >4.2 V, make sure jumper enables power regulation of
the jig in order to prevent overvoltage for the phone module under test and the jig.
•In case of flashing problems in the jig, verify the switch on the upper part of the
jig is in position “Flash”; position “Accessory” is intended for ACI tests with connected
ACI-communication enabled accessories, such as car kits or camera headsets.
•When shielding lids are removed from the shielding frame on the PWB, new
shielding lids must be used for proper closing of the shielding. It is not allowed to reuse the removed ones.
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■ RJ-107 soldering jig
Soldering jig is used for module level repair, either as fixation in µBGA rework places or when
there is need to hold a module on the work bench for any other repair.
Features include:
•convenient locking mechanism
•four (optional mount) rubber feet allow usage also on repair benches
•fixation of phone module in both ways possible (bottom or top side up)
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■ ST-13 PA rework stencil
The PA rework stencil is reused from RH-23.
SK-9PA rework kit
containing
RJ-21PA rework jig
(designed for RH-23 and RM-17)
ST-11PA rework stencil
(designed for RH-23)
For RM-127 power amplifier repairs, the following sten cil is needed instead of the above mentioned stencil (to be ordered separately).
ST-13 PA rework stencil
(designed for RM-17)
If spreader is needed, please refer to
SPS-2 Spreader
Note: For RM-127, another stencil than the one included in the rework kit SK-9 is needed, because another PWB pad layout is used. Therefore, ensure that for RM-127 the stencil ST-13 is
used for PA repairs.
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ Rework procedure
Due to the large mechanical tolerance of the power amplifiers, the following procedure is necessary:
1. Put the power amplifier into the RJ-21 rework jig. The PA should be placed in the
best fit location, this is determined by placing it in the largest location first, if this is to
large reposition the PA in the next size location. This should be carried out until the
best fit location is found.
2. Once the best fit location has been found, leave the PA there and put the stencil
on top of the jig and PA.
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■ FPS-8 flash prommer
The flash prommer FPS-8 is used with e.g. docking station (+adap ter) or the POS flash adapter.
Power is supplied to FPS-8 from the universal power supply.
The sales pack includes the following hardware items:
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ XCS-1 service cable
The XCS-1 service cable is used to connect FLS-4 to SF-17.
View of XCS-1
■ SW security device PKD-1
SW security device is a piece of hardware enabling the use of the service software when connected to the parallel (LPT) port of the PC. Without the dongle present it is not possible to use
the service software. Printer or any such device can be conne cted to the PC through the dongle
if needed.
Caution: Make sure that you have switched off the PC and the printer before making connections!
Caution: Do not connected the PKD-1 to the serial port. You may damage your PKD-1!
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ CA-52PS power cable
Charger plug to charger plug service cable.
View of CA-52PS
■ SX-4 smart card
SX-4 is a BB5 security device used to protect critical features in tuning and testing.
SX-4 also needed together with FPS-10 when DCT-4 phones are flashed.
RM-127
4 - Service Tools and Service ConceptsNokia Customer Care
■ Module jig service concept
This concept is for troubleshooting and RF calibration.
MJ-22 is intended to use with external power supply.
MJ-22 input voltage: normal +4V , maximum +6.5V .Ensure that the jumper is set for volt age reg-
ulation before the external power supply is connected. When a prommer is used for power supply (+4V), the jumper should be set to bypass regulator . EM calibration including Zocus are only
done with JBV-1. Module jig MJ-22 does not support Zocus calibration.