Fujitsu Ten @3000M amp doesn´t power up - Page 2 - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 17th April 2006, 08:05 PM   #11
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I've scanned objects on a flatbed scanner before but nothing that large.

It looks like the positive side of the coil goes to the center pin of the 3 pin connector (one blue wire and two black wires) via a resistor. I can't see where the other end of those wires connect. Confirm that this is correct with an ohm meter and follow the wires back to their origin.
  Reply With Quote
Old 17th April 2006, 08:16 PM   #12
sdoom is offline sdoom  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Heidelberg
Well, I have to wear glasses , so sometimes things are better when they are bigger

ok. The 3pin connector(2blk, 1 blue) are the LED-wires. blue wire is GND (GND for speakers and RCA connector shilding) . center black is connected to the Anode of the power-LED, outer black wire is connected to the Anode of the protection-LED .

i´m really confused as the TA7317 is supposed to put the pin6 to GND potential .....how could the LED ever been lit ? i think they connect the positive side of the relays to Bat + . But Signal GND is not directly connected to battery GND.
  Reply With Quote
Old 17th April 2006, 08:31 PM   #13
sdoom is offline sdoom  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Heidelberg
ok that´s the protect LED on pin 6 . That means that if the TA activates the relays, the protection LED will be turned off.
  Reply With Quote
Old 17th April 2006, 08:33 PM   #14
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I can't follow the traces around the IC. Can you clean the flux off with some acetone and a toothbrush?
  Reply With Quote
Old 17th April 2006, 09:46 PM   #15
sdoom is offline sdoom  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Heidelberg
hi again,

I ´ve drawn the curcuits around the TA7317 . Compared to the datasheet the only thing missing is a connection to the positive power supply (I mean secondary side) . There is one line that goes back into the SMPS part. This is connected to the bigger transistor´s collector. (2sb891) near the SG3524 .

The 2SB981 ´s emiter is connected to bat+

I will try to set up the amp to +/-24V and connect 12v battery power . I assume that the relays will then be activated. if that works we traced down the fault into the SMPS section.

  Reply With Quote
Old 29th June 2007, 09:39 AM   #16
rashid is offline rashid  Pakistan
diyAudio Member
 
Join Date: Jun 2007
Default Fujitsu Ten Amplifier

I have Fujitsu Ten Model #: 910SD1 Car Amplifier 3000M I want to know its specifications.
  Reply With Quote
Old 29th June 2007, 06:12 PM   #17
sdoom is offline sdoom  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Heidelberg
its something around 4x40W-4x50W RMS @ 4 Ohms
  Reply With Quote
Old 3rd October 2009, 09:17 AM   #18
sdoom is offline sdoom  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Heidelberg
uhhps just found this old post.

The amp was actually working fine but signal ground and power ground is connected through the heatsink. Making the missing "connections" with wires powered the amplifier up.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Exactly titles of old transistor data books from NEC, SONY and Fujitsu (1975 - 1985) tiefbassuebertr Solid State 5 12th December 2011 05:31 PM
Fujitsu FRL 644D24/2AS Relay jblmar Solid State 1 16th February 2009 03:41 PM
Timedomain Corp, Yoshii Hiroyuki, Fujitsu, Cepstral analysis jzagaja Full Range 2 11th January 2008 06:02 PM


New To Site? Need Help?

All times are GMT. The time now is 01:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2