Service manuals, schematics, eproms for electrical technicians

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If you get stuck in repairing a defective appliance download this repair information for help. See below.
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SONY MZ-E75 VER1.0 service manual (1st page)
Preview of SONY MZ-E75 VER1.0 [1st page]
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Document preview [2nd page]
SONY MZ-E75 VER1.0 service manual (2nd page)
Preview of SONY MZ-E75 VER1.0 [2nd page]
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  • Also known:
    SONY MZE-75 MZE75 MZE 75 MZ E75 MZ-E75
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  • Please take a look at the below related repair forum topics. May be help you to repair.
If you are not familiar with electronics, do not attempt to repair!
You could suffer a fatal electrical shock! Instead, contact your nearest service center!

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Relevant AUDIO forum topics:
sony potentiometer 2x50KA alphs

Mine sony amplifier TA-F444ES needs a (alphs) balance potentiometer pn 1-228-905-00 res,var,carbon 50k/50k with center detent.
Anyone who knows a reliable source ? shaft 6mm length shaft 2cm diameter potmeter 16mm
repair sony amplifier str-de254
Want to share: Have downloaded the schematics from this forum to help repair the amplifier of a friend. Turned out that Sony decided to route the earth through the chassis, even the earth between the various supplies. When one takes the main board out of the chassis and switches the amp on, there are up to 20 volts difference between the eart (and hence reference) of the pre-amps and the main amps. Luckily the amp goes into protection but from a design point of view it is not nice to rely on screws and aluminum face plates to conduct up to 0.2 amps of current from one supply to another. What I did is solder wires to every eart point and connected them on the main board to make it stand alone and not rely on conducting current through the chassis anymore. Bad design, simple repair but took some digging in the schematics to find out what exactly was going on!
Sony hifitorony! Push Power Protect!
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