|
|
|
Who's Online
There currently are 5575 guests online. |
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
The service manual is as described and received the link to the download sooner than expected. Great service, quality product. This site is a big help in the electronics repair business.
;
Il service manual molto accurato. Rapidi nella risposta
;
Quick site processing. A complete and very useful manual with all details. Thank you!
;
Quick service response. A useful and very rare service manual with all details. I recomend this service.
;
I ordered this manual sometime in the afternoon and I received it on my e-mail the same evening.
This is a fantastically good and properly scanned copy of the original manual. All pages are of the same scale and they overlap each other. It means that you can print the manual and easily make it as a convenient paper manual.
The content of the manual is fantastic. Alignment descriptions, PCB layouts and elementary diagrams are explicit and precise. I immediately found what I was looking for. Thanks to this manual and Owner-Manuals.com my amplifier is alive again. Many thanx indded!
FIGURE 1. USE SOLDERING IRON TO PRY LEADS
IC Removal/Replacement
Some utilized chassis circuit boards have slotted (oblong) holes through which the IC leads are inserted and then bent flat against the circuit foil. When holes are slotted, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 on the page under the title of general soldering guidelines.
Removal
1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. 2. Draw away the melted solder with an anti-static suction-type solder removal device (or with desoldering braid before removing the IC.
Replacement
1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. 3. Clean the soldered areas with a small wire-bristle brush. (lt is not necessary to reapply acrylic coating to the area).
�Small-Signal� Discrete Transistor Removal/Replacement
1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend the end of each of three leads remaining on the circuit board into a �U� shape. 3. Bend the replacement transistor leads into a �U� shape. 4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the �U� with long nose pliers to insoure metal-to-metal contact, then solder each connection.
Power IC, Transistor or Devices Removal/Replacement
1. Heat and remove all solders from the device leads. 2. Remove the heatsink mounting screw (if applicable). 3. Carefully remove the device from the circuit board. 4. Insert new device in circuit board. 5. Solder each device lead, and clip off excess lead. 6. Replace heatsink.
5
|
|
|
> |
|
