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User manual for Sony Walkman WM-FX251 - Sony Audio Players & Recorders

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Sony Walkman WM-D6C

If your WM-D6C has a serial number below 267201 (take out the battery block and you'll see the serial number sticker there) then the problem is electronic, not mechanical. It is likely due to the speed controller chip (labeled as IC601 on the circuit board), which is made by Sony and is type CX20084. This chip decides the voltage that is fed to the motor which is only about 2.4 volts, Should the chip be defective then the motor receives about twice this voltage and thus runs too fast. If you take the back off the recorder you will see the circuit board; it looks like a rectangle with a small square extra bit sticking out to the right. It is here that the IC601 resides. It is about the size of a small pinky finger nail and has 8 tiny legs down each side. Measure the voltage on pin 15 (put one voltmeter probe (+) on the second leg down on the right side (pin 15) and the other one (-) on the battery negative), it should read about 4.8 volts, which it feeds into the base of transistor (Q601) that in turn will then feed 2.4 volts to the motor (if everything is working OK). If the chip is damaged, then the voltage on pin 15 will be close to zero, and the transistor Q601 will not be "held back" and so will feed about 5 volts to the motor. CX20084 is (unfortunately) obsolete, someone in the UK sells them for about $50, but an excellent company in Hong Kong (utsource.net) sells them for $5 (plus $8 S&H). Taking out the old chip and putting in a new one is close to microsurgery, you will need a micro soldering iron (18Watt Antex), a good eye, a powerful magnifying glass and a steady hand, but it can be done - I've done it! There is a possible second reason that could cause the motor to run too fast. There is a pick up coil on the main flywheel called FG901. If this is damaged it will be open circuit and then the only use for your recorder is probably a paper weight. You can test this by going back to chip IC601 and locating pin 1 (top left pin; a small circle on the body of the chip is next to pin 1), Pin 1 is connected to the positive side of a capacitor,  C602 (0.47 microF), check the resistance from the negative side of C602 to the ground (take battery out, and use battery (-) as ground). You should get about 600 - 650 ohms reading. If you get nothing, sorry there is not much you can do about it as these pick up coils are definitely not available. Finally, chip 601 (CX20084) goes bad if you connect the batteries back to front. Good luck. Giles..

Posted on Jan 16, 2009

caroldon
  • 17129 Answers

SOURCE: I have a sony walkman WM-3. It suddenly stopped

Please check for the belts if the battery you have installed is new and the set gives a hum on play. If not you will have to check the power switch, the mechanism switch and the line to the main board.
If the motor turns but not the capstan and the reel then change the belt, the rollers or the pulley. I hope this will get your set back to action. Good day

Posted on Jul 21, 2010

caroldon
  • 17129 Answers

SOURCE: how to replace the drive belt on the sony walkman

Since this is a very small player what is important is to be very careful and delicate to open the rear cover and do the repair. The printed circuit board has to be removed and moved up carefully not to damage or detach wires. Now remove the capstan cap and take out the old belt, check the size with the new one and if OK run in the same direction you had taken out. replace the lid and the pcb carefully and fix the wires according to the same pattern so as not to touch the belt and drives. Now put in a cassette and test. If it works ok with the speed close the rear cover. clean the headd, the rollers and the transport section . Now your tape has been serviced and must work well. Hope my advice helps you . Good day

Posted on Jul 22, 2010

issikiki
  • 563 Answers

SOURCE: i need to have a user manual for a SONY

Hello.
You can get the manual here.

Posted on Aug 11, 2010

  • 186 Answers

SOURCE: how do I dismantle a sony wm-ex39 walkman. I

i had this problem.i use a knife to pry it open

Posted on Oct 17, 2010

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Please can you send me the user manual for Sony casset/radio modal WM-FX 277 thank you


You can download the manual from the manufacturer's web site at
http://esupport.sony.com/US/perl/model-find.pl?mdl=WM-FX277

Aug 11, 2010 | Sony Walkman WM-FX277 Personal Cassette...

1 Answer

Who can I send it to for maintenance/repair?


Get in touch with me and describe the problem. I have repaired many d6c and high-end Walkman and, when possible, increase the performance. doctor.walkman @ gmail.com

May 14, 2010 | Sony Walkman WM-D6C Personal Cassette...

1 Answer

My Sony Walkman Professional WM-D6C will turn on but the take-up spindle just slowly inches the tape along in short bursts, not a continious action.


Contact me at my email doctor.walkman @ gmail.com, I'll ask you some questions and some photos of the WM-D6C in his possession. We will solve the problem

Apr 23, 2010 | Sony Walkman WM-D6C Personal Cassette...

2 Answers

While trying to rewind or fast forward, it stops before reaching the end, and I have to restart it.


Send an email to service@tvps.com or call (800) 644-9525. Please indicate model, serial and detailed description of problem

Dec 10, 2009 | Sony Audio Players & Recorders

2 Answers

Sony Walkman cassette player/recorder will not rewind the tape


Fat chance to repair yourself! we repair that WmD6c but very hard to do!

Feb 23, 2009 | Sony Walkman WM-D6C Personal Cassette...

1 Answer

Tape fails to return to cassette when cassette removed.


I'm an repairer of electronic and micromeccanaca I have repaired many walkman analog (WM-D6C, wm-dd9, etc.. Improve your performance if required and if possible) and many like dat walkman Sony TCD-D3. I just started to repair even for those who come out of Italy. If you would contact me to explain the problem better I'll try to help. Email: doctor.walkman@gmail.com Sono un riparatore di elettronica e micromeccanaca ho riparato analogico walkman molti (WM-D6C, WM-dd9, ecc. Migliorate le prestazioni, se richiesto e se possibile) e molti come dat walkman Sony TCD-D3. Ho appena iniziato a riparare anche per chi si trova fuori d'Italia. Se vuoi contattarmi per spiegare meglio il problema cercher? di aiutarti. Email: doctor.walkman@gmail.com

Jul 29, 2008 | Sony Walkman TCD-D100 Personal Cassette...

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