Nokia 2160 Service Manual tuning
TUNING INSTRUCTIONS
NHC–4
Contents
Tuning Instructions 6–3–2
General 6–3–2
Required Equipment 6–3–3
Accuracy of the Equipment During Measurement 6–3–3
Equipment Setup 6–3–4
Equipment Setup for Tuning a Phone without Removing Covers 6–3–5
Equipment Setup for Tuning a Phone Removing Covers 6–3–6
Equipment Setup For Tuning A Booster 6–3–7
Starting The Program 6–3–8
Starting options for service software 6–3–8
Tuning Steps of Radio Unit 6–3–9
1. Bias Current Tuning 6–3–9
2. TX Output Power 6–3–10
3. FM Modulator Tuning 6–3–11
4. AFC tuning 6–3–12
5. RFI TX–IQ D.C. Offset Tuning 6–3–13
6. AMPS Demodulation Tuning 6–3–14
7. Analog mode RSSI 6–3–15
8. Digital mode AGC 6–3–16
9. Battery Voltage Adjustment 6–3–17
10. Charge Voltage Adjustment 6–3–17
11. SINAD Level Checking 6–3–18
Tuning Steps of Booster 6–3–19
1. Output Power Tuning 6–3–19
2. Transmitter Frequency Tuning 6–3–20
3. Output Power Check 6–3–21
4. Receiver Calibration 6–3–22
5. Voltage Calibration 6–3–22
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6–3–1
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TUNING INSTRUCTIONS
NHC–4
9618ARo
Technical Documentation
Tuning Instructions
General
In contrast to earlier second–generation analog cellular phones tuning operations of the NHC–4 are carried out using the Service software. The Service program turns the phone into the Locals mode, in which the phone can be outwardly controlled via the M2BUS interface.
The tuning values of the phone reside on the EEPROM. Before tuning these
values are read to the Service software and the user can change these values
with tuning functions.
N.B. During tuning, proceed as follows:
– Take care not to damage sensitive measuring instruments with excessive
RF power.
– Carry out all tuning steps in the shortest possible time to avoid excessive
heating of RF units.
6–3–2
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– Perform all tuning steps in the order presented.
– Never try to mask a fault by tuning it out!
TUNING INSTRUCTIONS
NHC–4
Required Equipment
– PC/AT computer with the Service software; see Sect. 5 for intructions on
installation and use.
– M2BUS adapter DAU–2 and other service accessories; see equipment set-
up pictures.
– Audio analyzer
– Spectrum analyzer
– RF power meter, power measurement sensitivity –10 dBm.
– Modulation analyzer with precise frequency measurement.
– RF generator
– Device to provide specified testmodulation to modulate RF generator.
– DMR tester
– Multimeter or DVM.
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– Attenuator and branching unit.
– Power supply 1, nom. voltage 12 V.
– Power supply 2, nom. voltage 6 V. This is needed only in that case, if you
want to connect the dummy battery direct to the to power supply.
Accuracy of the Equipment During Measurement
– Power supply 1; nominal voltage 12 ±0.5 V current cap. min. 1.5 A for ser-
vice box (JBS–7). If you test or tune also the RF booster BSH–4, you need
power supply, which has 5 A output capacity.
– Power supply 2 ;nominal voltage 6.0 ±0.1 V, current cap. min. 1.5 A.
– Mod. analyzer power level resolution 0.1 dB, accuracy ±0.5 dB. Frequency
counter accuracy 0.1 ppm 〈±80 Hz).
– RF generator; frequency res. 10 Hz amplitude res. 0.1 dB frequency stab.
±0.25 ppm.
– Spectrum analyzer; dynamic range 70 dB, accuracy ±1 dB (For power level
measurement accuracy ±0.5 dB).
TUNING INSTRUCTIONS
NHC–4
Equipment Setup
Caution: Make sure that you have switched off the PC and the printer before
making connections !
Caution: Do not connect the PKD–1 key to the serial port. You may damage
your PKD–1 !
Attach the protection key PKD–1 to parallel port one (25–pin female D–connector) of the PC. When connecting the PKD–1 to the parallel port be sure that you
insert the PC end of the PKD–1 to the PC (male side). If you use a printer on
parallel port one, place the PKD–1 between the PC and your printer cable.
Next connect the M2BUS adapter to the serial port (RS–232) of the computer.
In case you are using a 9–pin serial port (normal with an AT set) use the mating
adapter supplied with the M2BUS adapter.
Attach one end of the XCM–1 modular cable to the DAU–2 PC/M2BUS adapter
and the other end to the JBS–7 service box. Use suitable adapter, SCS–1 service cable when the covers of the phone are in place, JBS–8 test frame with the
phone covers off, and attach it to the phone. Then connect it to the service box.
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6–3–4
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TUNING INSTRUCTIONS
NHC–4
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Equipment Setup for Tuning a Phone without Removing Covers
6–3–5
Item: Service accessory: Product code:
2 Audio cable, ADS–1 0730011
3 Modular cable, XCM–1 4626131
4 Power connector, PCS–1 0730012
6 Dummy battery, BTS–4 0770009
8 RS–232 adapter (9 pin to 25 pin) 4626170
9 Service box, JBS–7 0770015
11 PC/M2BUS adapter, DAU–2 0750006
12 BCN cable (not available)
14 Banana cable (not available)
15 Banana cable (not available)
16 Service software diskette 3.5” 0774003
16 Service software diskette 5.25” 0774004
– Software protection key PKD–1 ”dongle” 0750018
TUNING INSTRUCTIONS
NHC–4
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Equipment Setup for Tuning a Phone Removing Covers
6–3–6
Item: Service accessory: Product code:
2 Audio cable, ADS–1 0730011
3 Modular cable, XCM–1 4626131
4 Power connector, PCS–1 0730012
7 Test frame, JBS–8 0770014
8 RS–232 adapter (9 pin to 25 pin) 4626170
9 Service box, JBS–7 0770015
11 PC/M2BUS adapter, DAU–2 0750006
16 Service software diskette 3.5” 0774003
16 Service software diskette 5.25” 0774004
17 Modular T–connector 4626134
– Software protection key PKD–1 ”dongle” 0750018
TUNING INSTRUCTIONS
NHC–4
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Equipment Setup For Tuning A Booster
20
2
17
5
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21
3
22
19
18
3
16
11
8
Item: Service accessory: Product code:
2 Audio cable, ADS–1 0730011
3 Modular cable, XCM–1 4626131
5 RF extension cable, XRH–1 0730017
8 RS–232 adapter (9 pin to 25 pin) 4626170
11 PC/M2BUS adapter, DAU–2 0750006
16 Service software diskette 3.5” 0774003
16 Service software diskette 5.25” 0774004
17 Modular T–connector 4626134
18 Booster, BSH–4 0500188
19 Front mount cable, SCE–8 9780091
20 Mobile holder, MCH–8 0620010
21 HF junction box, HFJ–3 0694009
22 Power cable, PCH–4 0730009
– Software protection key PKD–1 ”dongle” 0750018
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