Marantz SD385 - UK Vintage Radio Repair and Restoration Discussion Forum

toshiba tony · 11th Mar 2017, 8:37 am

Good morning, I am trying to find a service manual for the Marantz SD380 cassette deck, just rebelted one and I have no playback on deck two. I thought I may have damaged a leaf switch as I was reassembling but they seem ok, there are 6 of them but they all switch OK when the various parts operate them. It's a puzzle because before it was belted both decks were functioning. I can't suss out what how the machine decides which deck to switch in for playback (signal wise). All the mechanical functions are correct. IE, auto reverse, auto play from deck a-b, fast dubbing. But with a manual I could suss it, thank you.

tri-comp · 11th Mar 2017, 10:14 am

Could you possibly check that type-no. again, please ?
I don't know that number,
My electronic parts supplier doesn't know it,
and worst of all, Google is at a loss.
Possibly post a picture of the dual-cassette to help identifying it.

toshiba tony · 11th Mar 2017, 10:15 am

Sorry, 385, I'm usually accurate re models, cheers.

Grubhead · 11th Mar 2017, 4:41 pm

I think that model is similar to the 285 model that I posted a thread on in this section.

toshiba tony · 11th Mar 2017, 7:45 pm

Thanks, I was told the same, I'll look.

toshiba tony · 11th Mar 2017, 7:58 pm

Well Grubhead, A Yorkshire man eh? so am I, originally, just a different part, Huddersfield. Anyway, back to the Marantz, I had gone as far with the scope as I could without a manual, It's not the heads or alignment, there was plenty of audio going into the main board. And the audio that was there was crisp, also with the heads unplugged there was nothing like the normal amp noise you hear when you up the volume on deck B. I think the PDF will sort it, the bit that threw me I was sure both decks worked (signal wise) before I rebelted it. The kit cost me 25 quid, so I can't sling it, you know how tight we Yorkshire folk are. On a final note, do you remember Crazy Daisies in Sheffield, used to go every week from Huddersfield. Anyway cheers, will look at PDF

Grubhead · 11th Mar 2017, 8:46 pm

If it is like the 285 circuit wise there should be a UPC 1228 chip as the pre-amp for deck II. Check pin 4 to see if it gets 9 volts. If it doesn't it might be caused by the 100uf cap that feeds it.
There are on the 285 some leaf switches right under the deck that switch the audio on or off keep your eyes peeled for them.

I have heard of that club, but have never been in it.
My real name is Graham, but that would confuse people with the other Graham on the site so I don't use it on here.

toshiba tony · 11th Mar 2017, 8:47 pm

My scope is at work and I'm home for the weekend, but even with no tapes inserted, when play is pressed on deck b there isn't the characterisic hiss that you should hear. I have a meter here and on P4 the "play" switch remains o\c whichever function I select. This PDF is certainly a big help but I feel there are discrete differences. P4 on mine has 10 pins to it. Did you sort your's Grubscrew?
Mine is deck b that is faulty, but I'll suss it, take care and thanks again.

toshiba tony · 11th Mar 2017, 9:40 pm

Right the 285 is one way play, the 385 is auto-reverse, shouldn't matter re tracing , thanks.

toshiba tony · 11th Mar 2017, 10:03 pm

Got it, there's a leaf switch mounted in the middle of deck B, it's activated in the play mode only, the lever that actuates it wasn't reaching it. Thanks for your help re the pdf, only found it with your help, I unplugged the main plug to the board and shorted ot the various switches from the board end which sped things up. Cheers Graham.

11th Mar 2017, 8:37 am	#1
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Marantz SD385 Good morning, I am trying to find a service manual for the Marantz SD380 cassette deck, just rebelted one and I have no playback on deck two. I thought I may have damaged a leaf switch as I was reassembling but they seem ok, there are 6 of them but they all switch OK when the various parts operate them. It's a puzzle because before it was belted both decks were functioning. I can't suss out what how the machine decides which deck to switch in for playback (signal wise). All the mechanical functions are correct. IE, auto reverse, auto play from deck a-b, fast dubbing. But with a manual I could suss it, thank you.

11th Mar 2017, 10:14 am	#2
tri-comp Heptode Join Date: Oct 2008 Location: Aalborg, Denmark Posts: 903	Re: Marantz SD380 Could you possibly check that type-no. again, please ? I don't know that number, My electronic parts supplier doesn't know it, and worst of all, Google is at a loss. Possibly post a picture of the dual-cassette to help identifying it.

11th Mar 2017, 10:15 am	#3
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: Marantz SD380 Sorry, 385, I'm usually accurate re models, cheers.

11th Mar 2017, 4:41 pm	#4
Grubhead Heptode Join Date: Dec 2016 Location: Sheffield, South Yorkshire, UK. Posts: 539	Re: Marantz SD385 I think that model is similar to the 285 model that I posted a thread on in this section.

11th Mar 2017, 7:45 pm	#5
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: Marantz SD385 Thanks, I was told the same, I'll look.

11th Mar 2017, 7:58 pm	#6
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: Marantz SD385 Well Grubhead, A Yorkshire man eh? so am I, originally, just a different part, Huddersfield. Anyway, back to the Marantz, I had gone as far with the scope as I could without a manual, It's not the heads or alignment, there was plenty of audio going into the main board. And the audio that was there was crisp, also with the heads unplugged there was nothing like the normal amp noise you hear when you up the volume on deck B. I think the PDF will sort it, the bit that threw me I was sure both decks worked (signal wise) before I rebelted it. The kit cost me 25 quid, so I can't sling it, you know how tight we Yorkshire folk are. On a final note, do you remember Crazy Daisies in Sheffield, used to go every week from Huddersfield. Anyway cheers, will look at PDF

11th Mar 2017, 8:46 pm	#7
Grubhead Heptode Join Date: Dec 2016 Location: Sheffield, South Yorkshire, UK. Posts: 539	Re: Marantz SD385 If it is like the 285 circuit wise there should be a UPC 1228 chip as the pre-amp for deck II. Check pin 4 to see if it gets 9 volts. If it doesn't it might be caused by the 100uf cap that feeds it. There are on the 285 some leaf switches right under the deck that switch the audio on or off keep your eyes peeled for them. I have heard of that club, but have never been in it. My real name is Graham, but that would confuse people with the other Graham on the site so I don't use it on here.

11th Mar 2017, 8:47 pm	#8
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: Marantz SD385 My scope is at work and I'm home for the weekend, but even with no tapes inserted, when play is pressed on deck b there isn't the characterisic hiss that you should hear. I have a meter here and on P4 the "play" switch remains o\c whichever function I select. This PDF is certainly a big help but I feel there are discrete differences. P4 on mine has 10 pins to it. Did you sort your's Grubscrew? Mine is deck b that is faulty, but I'll suss it, take care and thanks again.

11th Mar 2017, 9:40 pm	#9
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: Marantz SD385 Right the 285 is one way play, the 385 is auto-reverse, shouldn't matter re tracing , thanks.

11th Mar 2017, 10:03 pm	#10
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: Marantz SD385 Got it, there's a leaf switch mounted in the middle of deck B, it's activated in the play mode only, the lever that actuates it wasn't reaching it. Thanks for your help re the pdf, only found it with your help, I unplugged the main plug to the board and shorted ot the various switches from the board end which sped things up. Cheers Graham.