Alienware M14x R2 with 7 beeps error

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

PDF has a search tool you can find any text in the file.
page 14 and 47.

pin 8 U48 - 3.319V
Still looking for KB930 on the board

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

that is strange. there should be some voltage.
now check voltage on pin8 of U48 and pins 95,104,107 of KB930 after turning on.

pin 8 U48 - 3.319V

KB930
pin 95 - 3.289V
pin 104 - 3.290V
pin 107 - 3.291V

[caspian]

Re: Alienware M14x R2 with 7 beeps error

KB930 is written on the IC, not beside it.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

KB930 is written on the IC, not beside it.

Results in previous post :-)

[caspian]

Re: Alienware M14x R2 with 7 beeps error

now go to page55 and measure voltage on pins 2,5,6,10 of PU303 after turning on.
report if you observe a temporary voltage on PL303 just after turning on.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

now go to page55 and measure voltage on pins 2,5,6,10 of PU303 after turning on.
report if you observe a temporary voltage on PL303 just after turning on.

Ether I've done this wrong or it's very odd

PU303 is very small and unsure if they're the correct pins
pin 2 - 3.322V
pin 5 - 155.5mV and keeps riseing/fluctuating
pin 6 - 3.322V
pin 10 - 0.1mV

PL303 - first on 0.8mV
0.5mV
0.3mV
0.1mV
0.3mV
0.1mV

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

Is this correct?

[caspian]

Re: Alienware M14x R2 with 7 beeps error

Is this correct?

no pins are not ordered like this on any IC.

[caspian]

Re: Alienware M14x R2 with 7 beeps error

I corrected the pin numbers.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

I corrected the pin numbers.

Thanks :-)

PU303
pin 2 - 1.497V
pin 5 - 3.287V
pin 6 - 0.604V
pin 10 - 3.320V

[caspian]

Re: Alienware M14x R2 with 7 beeps error

there is voltage on one side of PL303 but the other side has no voltage.
check resistance on pin2 of PL303 relative to GND.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

there is voltage on one side of PL303 but the other side has no voltage.
check resistance on pin2 of PL303 relative to GND.

PL303 has no continuity, how do I check resistance?

[caspian]

Re: Alienware M14x R2 with 7 beeps error

black probe on pin1 and red probe on pin2 of PL303.
put the multimeter on resistance mode.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

black probe on pin1 and red probe on pin2 of PL303.
put the multimeter on resistance mode.

I tried again and it gets continuity, resistance juggles from 0.2 to 0.1, tried voltage again and it's 1.497V, I must have done it wrong

[caspian]

Re: Alienware M14x R2 with 7 beeps error

so it is fine. then why are voltages different on the two sides of PL303?
now black probe on pin1 and red probe on pin2 of PL303. then after turning on, measure voltage.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

resistance juggles from 0.2 to 0.0, voltage is 1.497V on each side, I don't think it was making propper contace before, I gently scraped each side to clean the contacts

[caspian]

Re: Alienware M14x R2 with 7 beeps error

so there is a voltage there.
now measure voltage on PL403,PL504,PL604 again.
probably some of them were measured before by mistake.

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

so there is a voltage there.
Now measure voltage on pl403,pl504,pl604 again.
Probably some of them were measured before by mistake.

pl403 - 1.8v
pl504 - 0v
pl604 - 0v

[Johndill]

Re: Alienware M14x R2 with 7 beeps error

Thank you heaps for all your help so far, I'm heading off to bed as it's very late here in Australia, I'll give your next suggestions a try in the morning :-) Thanks

[Th3_uN1Qu3]

Re: Alienware M14x R2 with 7 beeps error

Please buy and fit a new LCD cable first. Many Dell and Alienware (since it is owned by Dell) models will NOT boot up unless the LCD cable is correctly fitted and the screen is okay. Some models even got a specific beep code for that.