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Old 1st July 2006, 09:40 PM   #1
wising is offline wising  Sweden
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Default Schematics for Pioneer SX-434

Hello.

Im searching for the schematics or service manual for Pioneer SX-434, maybee anybody here got one or knows where to get one?

regards / Wising
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Old 2nd July 2006, 08:13 PM   #2
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I may have a schematic fo an sx-535. Would that be of any help?
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Old 3rd July 2006, 03:39 AM   #3
Leolabs is offline Leolabs  Malaysia
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Hi wising,any problem with the Pioneer???
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Old 23rd September 2009, 01:10 PM   #4
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No output from left channel on my Pioneer SX434. Well, I got the schematic now. On the AWK-034 (power amp section) I replaced Q16 (2SC1318), Q20 (2SD131) and Q22 (2SB507) - all transistors went short - as well as R73 (18ohm 1/2W) - burnt out. But still no output.
Am I missing something? Any ideas?
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Old 23rd September 2009, 01:33 PM   #5
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Do you check R 83/85 & R 79/81?

Regards zeoN_Rider
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Old 23rd September 2009, 04:31 PM   #6
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Default Schematics for Pioneer SX-434

Just finished checking. R83 / R85 and R79 / R81 are fine. 2 pins on Q16 were inverted (wonder how it could have happened???).
But still no sound on the left channel. Now I've got a very loud hum.
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