Iphone 4-Error 1 - GSM-Forum

DeeCoy · 04-04-2014, 13:51

Hello!
Recently I bought Iphone which turns on but wants to be plugged in to itunes. When I did that it stuck at updating firmware(bar at 60%). Then it returns error 1, which could be hardware problem. Any ideas what could I do?
Thanks in advance.

iphonerepair12 · 04-04-2014, 21:59

Mostly baseband IC problem, try a soft reflow and check if problem is solved. Else reball is needed.

DeeCoy · 04-04-2014, 23:18

Thank you, I made it in owen, it starts now, but I have problem at activation. I can select language and country and then it comes up with itunes connect.. When I do it, itunes says there is problem with my device. What should I do?

dog68 · 04-05-2014, 10:05

Only re-ball of both baseband ic's will fix this, Never heat glued ic's, they lose their balls, and short, Bad advise soft reflow.

DeeCoy · 04-05-2014, 10:12

Dog68, did you read my last post? Is this comment on it?
Can I just use heatgun to reheat chip? This iphone is to old and not worth enought to send it to service, so do you have any idea how could I fix it at home?

Olkowski · 04-05-2014, 10:14

check voltage on l2_rf and L3_rf if You dont have on L2_rf voltage thats Baseband problem.You must reflow two ic U9 and U4

DeeCoy · 04-05-2014, 10:22

As I told. I am not pro in this, I know how to replace LCD, how to disassembly anything, but I dont have much experience with this microparts on motherboard. Could someone please explain me what and how should I do it in simple language? I can check voltages, I have voltmeter, but where should I do it?

Olkowski · 04-05-2014, 10:30

If You dont working with microparts than cant do it sorry.

DeeCoy · 04-05-2014, 10:36

Do you have any idea what could I do? I dont want to throw almost working phone away. If there is anything I can do with heatgun, please advise me.
Thanks in advance.

Olkowski · 04-05-2014, 10:46

find schematic for ip4 and check voltage but I no is l2_rf not have ,than you can pick up baseband cheap.

DeeCoy · 04-05-2014, 11:00

I could not locate l2_rf even with searching on forum. Could you tell me where should I check it, do you have any picture?

Olkowski · 04-05-2014, 11:17

find service manual for iphone4

DeeCoy · 04-05-2014, 11:45

Okay so I found it, I checked l2_rf voltage, it was arounf 2V. Is that okay? Also, a smoke came out from l2_rf when messuring, I think this is not normal?
Also, with beeper, I find contact between both legs of l2_rf is that normal?

Olkowski · 04-05-2014, 11:58

voltage normal l2_rf is about 1.12-1.2V.L2 is a coil.L3_rf check voltage about 1.8V

Olkowski · 04-05-2014, 12:00

-------------------|----Phone-OFF--|-Phone-ON-no-SIM--|-Phone-ON-with-SIM-on-call-|-
VDD_PMU_LDO_IN-----|-------3.8V----|-------3.8V-------|----------3.8V-------------|-
VDDSD1_IN----------|-------3.8V----|-------3.8V-------|----------3.8V-------------|-
VDDSD2_IN----------|-------3.8V----|-------3.8V-------|----------3.8V-------------|-
VSD1_VAR-----------|--------0V-----|-------1.12V-(A)--|----------1.12V------------|-
VSD2_1V8-----------|--------0V-----|-------1.8V--(A)--|----------1.80V------------|-
VSIM_VAR-----------|--------0V-----|--------0V--------|----------2.85V------------|-
VANA1_1V3----------|--------0V-----|--------0V--------|----------1.30V------------|-
VANA2_2V5----------|--------0V-----|--------0V--------|-----------0V--------------|-
VRF2_2V85----------|--------0V-----|-------2.83V--(A)-|----------2.83V------------|-
VRF1_GPS-----------|--------0V-----|--------0V--------|-----------0V--(C)---------|-
VREF---------------|--------0V-----|-------0.6V-------|----------0.6V-------------|-
VPLL_1V35----------|--------0V-----|-------1.35V--(A)-|----------1.35V------------|-
VPMU_1V3-----------|-------1.3V----|-------1.30V--(A)-|----------1.30V------------|-
VRTC_2V3-----------|-------2.28V---|-------2.28V------|----------2.28V------------|-
VMIPI_1V2----------|--------0V-----|--------0V--------|-----------0V--------------|-
VDD_MAIN_RF--------|--------0V-----|-------2.8V---(B)-|----------2.8V-------------|-

check this voltage on your motherboard

04-04-2014, 13:51	#1 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	Iphone 4-Error 1 Hello! Recently I bought Iphone which turns on but wants to be plugged in to itunes. When I did that it stuck at updating firmware(bar at 60%). Then it returns error 1, which could be hardware problem. Any ideas what could I do? Thanks in advance.

04-04-2014, 21:59	#2 (permalink)
iphonerepair12 Freak Poster Join Date: Oct 2013 Posts: 105 Member: 2045117 Status: Offline Thanks Meter: 7	Mostly baseband IC problem, try a soft reflow and check if problem is solved. Else reball is needed.

04-04-2014, 23:18	#3 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	Thank you, I made it in owen, it starts now, but I have problem at activation. I can select language and country and then it comes up with itunes connect.. When I do it, itunes says there is problem with my device. What should I do?

04-05-2014, 10:05	#4 (permalink)
dog68 No Life Poster Join Date: Mar 2012 Location: cambridgeshire, England Age: 55 Posts: 760 Member: 1728699 Status: Offline Thanks Meter: 212	Only re-ball of both baseband ic's will fix this, Never heat glued ic's, they lose their balls, and short, Bad advise soft reflow.

04-05-2014, 10:12	#5 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	Dog68, did you read my last post? Is this comment on it? Can I just use heatgun to reheat chip? This iphone is to old and not worth enought to send it to service, so do you have any idea how could I fix it at home?

04-05-2014, 10:14	#6 (permalink)
Olkowski Freak Poster Join Date: Sep 2003 Location: Poland Age: 57 Posts: 147 Member: 40262 Status: Offline Thanks Meter: 11	check voltage on l2_rf and L3_rf if You dont have on L2_rf voltage thats Baseband problem.You must reflow two ic U9 and U4

04-05-2014, 10:22	#7 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	As I told. I am not pro in this, I know how to replace LCD, how to disassembly anything, but I dont have much experience with this microparts on motherboard. Could someone please explain me what and how should I do it in simple language? I can check voltages, I have voltmeter, but where should I do it?

04-05-2014, 10:30	#8 (permalink)
Olkowski Freak Poster Join Date: Sep 2003 Location: Poland Age: 57 Posts: 147 Member: 40262 Status: Offline Thanks Meter: 11	If You dont working with microparts than cant do it sorry.

04-05-2014, 10:36	#9 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	Do you have any idea what could I do? I dont want to throw almost working phone away. If there is anything I can do with heatgun, please advise me. Thanks in advance.

04-05-2014, 10:46	#10 (permalink)
Olkowski Freak Poster Join Date: Sep 2003 Location: Poland Age: 57 Posts: 147 Member: 40262 Status: Offline Thanks Meter: 11	find schematic for ip4 and check voltage but I no is l2_rf not have ,than you can pick up baseband cheap.

04-05-2014, 11:00	#11 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	I could not locate l2_rf even with searching on forum. Could you tell me where should I check it, do you have any picture?

04-05-2014, 11:17	#12 (permalink)
Olkowski Freak Poster Join Date: Sep 2003 Location: Poland Age: 57 Posts: 147 Member: 40262 Status: Offline Thanks Meter: 11	find service manual for iphone4

04-05-2014, 11:45	#13 (permalink)
DeeCoy Major Poster Join Date: Apr 2014 Posts: 42 Member: 2161397 Status: Offline Thanks Meter: 1	Okay so I found it, I checked l2_rf voltage, it was arounf 2V. Is that okay? Also, a smoke came out from l2_rf when messuring, I think this is not normal? Also, with beeper, I find contact between both legs of l2_rf is that normal?

04-05-2014, 11:58	#14 (permalink)
Olkowski Freak Poster Join Date: Sep 2003 Location: Poland Age: 57 Posts: 147 Member: 40262 Status: Offline Thanks Meter: 11	voltage normal l2_rf is about 1.12-1.2V.L2 is a coil.L3_rf check voltage about 1.8V

04-05-2014, 12:00	#15 (permalink)
Olkowski Freak Poster Join Date: Sep 2003 Location: Poland Age: 57 Posts: 147 Member: 40262 Status: Offline Thanks Meter: 11	-------------------\|----Phone-OFF--\|-Phone-ON-no-SIM--\|-Phone-ON-with-SIM-on-call-\|- VDD_PMU_LDO_IN-----\|-------3.8V----\|-------3.8V-------\|----------3.8V-------------\|- VDDSD1_IN----------\|-------3.8V----\|-------3.8V-------\|----------3.8V-------------\|- VDDSD2_IN----------\|-------3.8V----\|-------3.8V-------\|----------3.8V-------------\|- VSD1_VAR-----------\|--------0V-----\|-------1.12V-(A)--\|----------1.12V------------\|- VSD2_1V8-----------\|--------0V-----\|-------1.8V--(A)--\|----------1.80V------------\|- VSIM_VAR-----------\|--------0V-----\|--------0V--------\|----------2.85V------------\|- VANA1_1V3----------\|--------0V-----\|--------0V--------\|----------1.30V------------\|- VANA2_2V5----------\|--------0V-----\|--------0V--------\|-----------0V--------------\|- VRF2_2V85----------\|--------0V-----\|-------2.83V--(A)-\|----------2.83V------------\|- VRF1_GPS-----------\|--------0V-----\|--------0V--------\|-----------0V--(C)---------\|- VREF---------------\|--------0V-----\|-------0.6V-------\|----------0.6V-------------\|- VPLL_1V35----------\|--------0V-----\|-------1.35V--(A)-\|----------1.35V------------\|- VPMU_1V3-----------\|-------1.3V----\|-------1.30V--(A)-\|----------1.30V------------\|- VRTC_2V3-----------\|-------2.28V---\|-------2.28V------\|----------2.28V------------\|- VMIPI_1V2----------\|--------0V-----\|--------0V--------\|-----------0V--------------\|- VDD_MAIN_RF--------\|--------0V-----\|-------2.8V---(B)-\|----------2.8V-------------\|- check this voltage on your motherboard