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GSM 850, GSM900, GSM1800 & GSM1900 Transmitter
General instructions for Tx troubleshooting
ICQ: 343183001 QQ: 35070846 Email: Serviceic@yahoo.com.cn
Kindly refer to the Service Software Section, Service Concept dagram (p.40)
Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4 mod-
ular cable.
Make sure that you have PKD-1 dongle connected to computers parallel port.
Connect DC power supply to module test jig with FLC-2 cable.
Attention: When repairing or tuning transmitter use external DC supply with at least 3A
current capability. Set the DC supply voltage to 3.9V and set the jumper connector on test
jig to "bypass" position.
Connect an RF-cable to the module test jig (MJS-38) RF connector and to measurement equip-
ment or at least a 10dB attenuator, otherwise the PA may be damaged. Normally a spectrum
analyzer is used as measurement equipment.
Attention: Normally Spectrum analyzer maximum input power is +30dBm. It is recommended
to use 10dB attenuator on Spectrum analyzer input to prevent damage.
Set the phone module to test jig and start Phoenix service sofware
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 -> RH-30/RH-31
From toolbar set operating mode to "Local"
Activate RF controls window from the menu
Testing -> RF Controls
From the RF controls window
- Select band "GSM 850", "GSM900" or "GSM 1800" or "GSM1900" (Default = "GSM900" RH-
30, Default= "GSM850" RH-31)
- Set Active unit to "Tx" (Default = "Rx")
- Set Operation mode to "Burst" (Default = "Burst")
- Set Tx data type to "Random" (Default = "All1")
- Set Rx/Tx channel to 190 on GSM 850, 37 on GSM900 band or 700 on GSM1800 band or
661 on GSM1900 (Defaults)
- Set Tx PA mode to "Free" (Default)
- Set power level to 5 (Default = 19) on GSM 850 and GSM900 or to 0 (Default = 15) on
GSM1800 or GSM1900
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Troubleshooting
