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2
Enter Test Program
2.1
Introduction
To be able to use EFRA the phone has to be programmed with test program.
The programming is also performed in EFRA.
If the phone does not start in the radio calibration or trouble shooting part of EFRA, despite an
approved flash programming, go to section 2.2
If the phone can not be programmed, go to section 2.3.
2.2
The phone does not start in the test program
Attach a dummy battery and press the On/Off button.
Check the display and the current consumption.
If the phone starts, showing the revision of the test program in the display,
and consumes 30 – 50 mA, the phone usually is without fault.
Check your equipment.
Following things are necessary for the phone to start in the test program:
Correct battery voltage + 4.8 V
The current limit must be set high enough on the output of the power supply (2A).
The phone must be started before clicking on the "Start-up" in EFRA.
The following signal must be found at the system connector of the phone, TTMS, TFMS,
VPPFLASH, GND and VDD.
Hardlock connected and installed.
If the fault really is electrical, open the phone and make a visual check of the board.
Make sure there is not any liquid damage, burned or damaged pads at the system connector or
bad soldering of D600 or D610.
No further action should be taken for a liquid damaged telephone.
Give the board power and start it using the On/Off button.
Check the amplitude of MCLK at C680 using the spectrum analyser >3 dBm.
We propose the following settings: CF – 13MHz, SPAN – 1 MHz, RBW – 10 kHz, VBW – 10
kHz and SWEEP – 30 ms.
If MCLK is too low, the fault usually is due to L540, B510 or a short circuit in C542.
If the fault still remains, try to program the phone again.
If the phone consumes more then 200 mA, go to section 2.4.3.
If the phone consumes no current at all when the button is pressed, there probably is a liquid
damage.
Open the phone and check for liquid damage.
No further action should be taken for a liquid damaged telephone.
4/00021-3/FEA 209 544/18 B
.
DC
Trouble Shooting Guide, Advanced
8(121)
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