Aiwa ADF 990 Cssette deck

[VHF man]

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.

[tvi]

next I'd check voltages at the collectors of Q3 and Q4

see attached schem

servive manual is here

rgds
jms

[VHF man]

Originally Posted by tvi

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

[mlloyd1]

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

[VHF man]

Originally Posted by mlloyd1

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