Nokia 2010 TUNING INSTRUCTIONS
TUNING INSTRUCTIONS
NHE–3
Contents
Tuning Instructions 6–3–2
General 6–3–2
Required Equipment 6–3–3
Equipment Setup 6–3–3
Equipment Setup For Tuning A Phone Without Remowing Covers 6–3–4
Equipment Setup For Tuning A Phone With Remowing Covers 6–3–5
Starting The Program 6–3–6
Starting options for PCLocals service software 6–3–6
Tuning Steps 6–3–7
1. RSSI Reference Signal Level Storage 6–3–7
2. AFC Diagram Storage 6–3–7
3. I/Q Modulator Amplitude Balance and Phase Shift Tuning 6–3–8
4. Tuning of Transmitter Power Levels 6–3–10
5. Charge Voltage Adjustment 6–3–11
6. Battery Voltage Adjustment 6–3–11
9546HK
Technical Documentation
6–3–1
Copyright Nokia Mobile Phones
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TUNING INSTRUCTIONS
NHE–3
Tuning Instructions
General
In contrast to earlier second–generation analog cellular phones almost all tuning operations of the NHE–3 are carried out using the PCLocals software. The
PCLocals program turns the phone into the Locals mode, in which the phone
can be outwardly controlled via the M2BUS interface.
Tuning is based on the PCLocals software communicating with the D/A and A/D
converters of the phone. In some instances the phone processor will also calculate the required correction parameter.
The tuning values of the phone reside on the EEPROM. The contents of the
EEPROM can be read by the PCLocals program and saved as a file. This is advisable when there is need to retain that information, e.g. in view of replacement of the circuit. The program also enables writing the default parameters on
the EEPROM, in which case all tuning steps should be carried out.
9546HK
Technical Documentation
6–3–2
Copyright Nokia Mobile Phones
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.
– Perform all tuning steps in the order presented.
– Never try to mask a fault by tuning it out!
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TUNING INSTRUCTIONS
NHE–3
Required Equipment
– PC/AT computer with PCLocals software; see Sect. 5 for intructions on
installation and use.
– M2BUS adapter DAU–2 and other service accessories; see equipment set-
up pictures.
– Multimeter or DVM.
– GSM radio telephone test station or separate measuring equipment as fol-
lows:
– frequency counter (±1 ppm)
– RF generator
– pulse power meter
– spectrum analyzer
– attenuator and branching unit
9546HK
Technical Documentation
6–3–3
Copyright Nokia Mobile Phones
Equipment Setup
To set up the equipment, 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. Turn
off the computer before connecting to avoid possible damage to the serial port.
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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TUNING INSTRUCTIONS
NHE–3
9546HK
Technical Documentation
Copyright Nokia Mobile Phones
Equipment Setup For Tuning A Phone Without Remowing Covers
6–3–4
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–9 0770030
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)
13 Battery tester BT–20 4626146
14 Banana cable (not available)
15 Banana cable (not available)
16 PCLocals diskette 3.5” 0193682
16 PCLocals diskette 5.25” 0193681
17 Software protection key PKD–1 ”dongle” 0750018
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