Sharp GF-5757HB line-in?
- Thread starter LJV
- Start date
- Status
Sweeeeet sharp 
. Thanks for the post, I don't have that model on my spreadsheet yet. Do you have anymore photos you can post?
. Thanks for the post, I don't have that model on my spreadsheet yet. Do you have anymore photos you can post?
The DIN connector on the pack reads "AMP"... I doubt that it has just a line out on it, can't be sure.
I'm unsure too. It seams like DIN out to Amplifier, and it looks like there are one or two stereo connectors on the right, but I can't read what it written underneath. I mean, it would be strange for it not to have any kind of line-in, right?
I'm unsure too. It seams like DIN out to Amplifier, and it looks like there are one or two stereo connectors on the right, but I can't read what it written underneath. I mean, it would be strange for it not to have any kind of line-in, right?
No switch for line in usually means no true line in. Probably just through cassette deck which usually s--ks 
It's a 5-DIN . There's a diagram showing pins 1 and 4 as audio out, pins 5 and 3 as audio in. Maybe the connection is two-way 
http://en.wikipedia.org/wiki/DIN_connector
http://en.wikipedia.org/wiki/DIN_connector
It's a 5-DIN . There's a diagram showing pins 1 and 4 as audio out, pins 5 and 3 as audio in. Maybe the connection is two-way
http://en.wikipedia.org/wiki/DIN_connector
Indeed. My thoughts exactly, but manufacturers frequently build in 5 pin DIN connector just for the sake of wider compatibility with 5 pin DIN cable. That way they can't miss. I've seen it too many times - 5 pins and only 3 used. User manual or schematics would solve the problem, but I couldn't find any.
http://en.wikipedia.org/wiki/DIN_connector
Indeed. My thoughts exactly, but manufacturers frequently build in 5 pin DIN connector just for the sake of wider compatibility with 5 pin DIN cable. That way they can't miss. I've seen it too many times - 5 pins and only 3 used. User manual or schematics would solve the problem, but I couldn't find any.
Schematics are here,
Some models have line in, as you can see in the schematic, some do not.
I am not sure if the mic in would work as I think it only goes to tape.
But the DIN socket however has all the pins connected.
Some models have line in, as you can see in the schematic, some do not.
I am not sure if the mic in would work as I think it only goes to tape.
But the DIN socket however has all the pins connected.
Here is how to install a true line in on a GF-5757 and GF-600.
You need to use a 5 pin stereo 3,5 mm minijack (normalized/Switching) Whatever you call.
Ebay is your friend.
Maybe this works on other GF models as well.
This taps into the radio line and when the jack is inserted it switches the radio line off and uses the jack instead.
It's not the best idea to use tape line because you would need to press the play or record button, this is because the amplfier IC is turned off when the radio is not on "play mode"
No caps and no extra resistors needed.
You do need to connect the GND from the minijack to somewhere on the PCB where there is a real GND ref.
GL
You need to use a 5 pin stereo 3,5 mm minijack (normalized/Switching) Whatever you call.
Ebay is your friend.
Maybe this works on other GF models as well.
This taps into the radio line and when the jack is inserted it switches the radio line off and uses the jack instead.
It's not the best idea to use tape line because you would need to press the play or record button, this is because the amplfier IC is turned off when the radio is not on "play mode"
No caps and no extra resistors needed.
You do need to connect the GND from the minijack to somewhere on the PCB where there is a real GND ref.
GL
Attachments
Thanks for this. I'm going to give it a go tonight.acidbob said:Here is how to install a true line in on a GF-5757 and GF-600.
You need to use a 5 pin stereo 3,5 mm minijack (normalized/Switching) Whatever you call.
Ebay is your friend.
Maybe this works on other GF models as well.
This taps into the radio line and when the jack is inserted it switches the radio line off and uses the jack instead.
It's not the best idea to use tape line because you would need to press the play or record button, this is because the amplfier IC is turned off when the radio is not on "play mode"
No caps and no extra resistors needed.
You do need to connect the GND from the minijack to somewhere on the PCB where there is a real GND ref.
GL
A few additional resources here that people may find useful.
Firstly, the full service manual http://elektrotanya.com/sharp_gf-5757h_gf-5757e.pdf/download.html
Second, if you live in the UK then Maplins sell the minijack suggested - http://www.maplin.co.uk/p/35mm-pcb-mounted-stereo-socket-fk20w
And lastly, this is a zoomed in image showing the points where, I believe, you should be tapping into. I'm going to unsolder resistors R47 and R48, solder wires back onto the board and then bring this out to the miniojack.
I'll post pictures when i'm done (if it works
).
Hi, I'm new to the forum.
I've just bought a GF5757 with the intention of installing a line in so I'd be really interested to see how your upgrade went Disgraceland! I hope it worked as planned...
Cheers
Andy
I've just bought a GF5757 with the intention of installing a line in so I'd be really interested to see how your upgrade went Disgraceland! I hope it worked as planned...
Cheers
Andy
Found some pics on my phone, so craeted a quick gallery for you
http://imgur.com/gallery/qtZsh
Most importantly:
Ground connection
Points to access the board:
Found some pics on my phone so created a gallery for you.Andy Nolan said:
http://imgur.com/gallery/qtZsh
Most importantly:
Ground connection
Points to access the board:
- Status