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Old 22nd February 2011, 12:37 PM   #1
VHF man is offline VHF man  Australia
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Default Aiwa ADF 990 Cssette deck

I purchased this on ebay for $100. After replacing the main drive belt the deck works fine except that it can't recognise a type 1 or 2 tape and hence can only auto calibrate a metal tape. The detect switches are working ok so it must be a dry joint or HR connector. The wiring loom looks really messy and ditto everything else inside.

Is there anyone who owns one of these beasts that's done a service and might know what common faults there are to look out for.
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Old 22nd February 2011, 01:45 PM   #2
tvi is offline tvi  Australia
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next I'd check voltages at the collectors of Q3 and Q4

see attached schem

servive manual is here

rgds
jms
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Old 22nd February 2011, 07:17 PM   #3
VHF man is offline VHF man  Australia
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Quote:
Originally Posted by tvi View Post
next I'd check voltages at the collectors of Q3 and Q4

see attached schem

servive manual is here

rgds
jms
Thanks. That looks like a good place to start.
I've also downloaded the service manual so I'll take the deck apart tomorrow.

cheers,
vhf
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Old 22nd February 2011, 07:26 PM   #4
mlloyd1 is online now mlloyd1  United States
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vhf man:

where'd you get the belt? i 've got one of these i'd like to get going again, too. needs a belt and a pinch roller.

mlloyd1

edit:
never mind, i found some info here:
Aiwa AD-F770 belts, which goes where - Tapeheads.Net

Last edited by mlloyd1; 22nd February 2011 at 07:35 PM.
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Old 22nd February 2011, 10:02 PM   #5
VHF man is offline VHF man  Australia
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Quote:
Originally Posted by mlloyd1 View Post
vhf man:

where'd you get the belt? i 've got one of these i'd like to get going again, too. needs a belt and a pinch roller.

mlloyd1

edit:
never mind, i found some info here:
Aiwa AD-F770 belts, which goes where - Tapeheads.Net
And here too..
Tape Deck Belts: Aiwa

Good luck with the restoration
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