Hi, I'm looking for the schematic and boardview of the JS471/JS573 NM-E541 board. the pu6001 is shorted.
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Re: need schematic NM-E541
What is the make / model of your unit? -
Re: need schematic NM-E541
Can you post a picture of your defective PU6001 on the logic board?
Can you read the topside markings of this part?Comment
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Re: need schematic NM-E541
Sy8386Comment
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Up for this post. If anyone has Schematic or BoardviewComment
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If someone helps me with the scheme please lenovo... -
Hello, I have this board in question. When I connect an AC-DC adapter charger (without a battery), the consumption is 19mA, with only +5VALW and 3VL present. When I press the power button, all voltages appear OK, the consumption rises to 260mA and remains stable. There's no video.
My question is if anyone has this board or information on the power-up sequence, and if the other ALW voltages are present when the load is connected.
What I noticed is that at first, 3VALW and 1.8VALW appear for a second or less. The BIOS is never read. Even so, the BIOS has been reprogrammed... -
Hello.
Please, help me to remove bios password.
Here is bios dump.
Model: LENOVO IdeaPad 1 15ALC7
S/N: PF4QG7XP
MB: JS471/JS573 Rev: 1.0
Thanks in advance.
LENOVO IdeaPad 1 15ALC7.zip... -
Hey everyone,
I'm currently working on a mid-70s Sharp Electronic Digital Clock Radio, Model FY-70CH. I found the service manual online, printed it out, and have been studying it for a while. My main reasons for tackling this are: (1) I want to learn electronics and figured I'd start with something I had on hand, and (2) I want to fix its issues. Right now, the radio sounds awful, has about 5V DC at the speaker terminals, and the alarm time setting doesn't work. But I'm not asking how to fix these problems.
Instead, here's what's been bugging me so far:
The schematic... -
Ii wonder if anyone can help me. I have a Acer x163w monitor which is not powering up. The PSU main capacitor's one leg had completly come off - I replaced it but the PSU is still not outputting DC. I found the monitor in questions service manual here on manuals lib but the schematic in there is a completely different - the schematic shows no mosfet to drive the transformer while the one I have does use a mosfet - also the schematic shows only one optocoupler but mine has two.
The PSU board is labelled FM-20A02-AAA made by APD as per the image below. I am trying to find a schematic for this...
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