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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair

Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section.

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Old 11-18-2002, 10:13   #1 (permalink)
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Question 8210 mcu eeprom interface failed


I have problem with nokia 8210 . It has CONTACT SERVICE on the display . When I start self testing it displays me this message: "Mcu eeprom interface test failed , Eeprom tune checksum test failed"

I know that problem is probably in COBA . I am concerned that problem might be in lines from mcu to coba , or in Mcu it self.
I need your opinion!
I can flash the phone, but it woun`t update simlock.

Thanks in advance
Me@n
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Old 11-18-2002, 15:21   #2 (permalink)
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Me@n

1: flash rom no good
2: try flash a phone with eeprom area !
3: check CCONT
Willy
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Old 11-20-2002, 01:45   #3 (permalink)
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Try to flash from 3d0000 to 400000.
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Old 11-21-2002, 18:49   #4 (permalink)
DMD
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Talking 8210 repair

Hi Me@n
Just flash the phone then rewrite imei data and update faid then the "contact service " will be gone and the phone should be ok

laterD.

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Old 08-24-2003, 21:56   #5 (permalink)
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i have same problem.. tried a full flash and then reset locks , changed imei and update faid but still the same problem. please help
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Old 08-24-2003, 23:52   #6 (permalink)
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Re: 8210 mcu eeprom interface failed

Quote:
Originally posted by Me@n
I have problem with nokia 8210 . It has CONTACT SERVICE on the display . When I start self testing it displays me this message: "Mcu eeprom interface test failed , Eeprom tune checksum test failed"
Mcu eeprom interface test failed

is OK, because the 8210 has no external E2P like the for example the 3210/6110/5110 etc.

It is emulated in the flash ic.

And the checksum in the E2P of the flash is not ok, that is the problem.
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Old 08-25-2003, 04:47   #7 (permalink)
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@Tbaba

Quote:
Originally posted by Tbaba
i have same problem.. tried a full flash and then reset locks , changed imei and update faid but still the same problem. please help
in your case just replace Cobba, but if give us more details might be easier for us to diagnose the problem and give u the right answer..


good luck
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