|
|
|
Who's Online
There currently are 5492 guests online. |
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
This scanned manual is well done in that most all the pages except for one is straight and clear- the way I would do them. One page was upside down but that happens. For the money that is charged on this site you get a pretty good deal. Now with complex repairs, I still prefer to us paper manuals which I have to buy at stereomanuals but the one I got here was much less than the $45 he was charging but this is a larger than normal manual for three different units. I am a picky manual user because I have used original manuals from Sony and Teac.
;
Very useful service manual, was exactly what i needed.Good quality,reasonable price.Thank you.
;
Acurate informations inside the SM and I could repair my old Sansui SC-3330 without any problems. Thanks.
;
I used it to repair a NAD 7030, but unfortunately, the 7045 is different !
But documentation was useful.
;
Content A4 and A3 format pages. Exactly what I needed to restore my old receiver.
61R-WP5H 55R-WP5H
Servicing precautions 1. Protector Operation
This model is provided with five protector circuits. Below discussed are the behaviors and indications of these circuits. (Note: In some cases, the LED flashing cycle and possible trouble spot may be inconsistent.) 1 Over-current Protector Circuit: A rush current into the flyback transformer is detected. The circuit is activated if an over-current flows in. Indication: The power LED (red) flashes once. 2 X-Radiation Protector Circuit: This circuit is activated if the rectified heater voltage rises above its specified level. Indication: The power LED (red) flashes once.
ON
OFF
0.2
1.4
(seconds)
3 Vertical Output Protector Circuit: The vertical output is detected. The circuit is activated if the vertical output is missing (horizontal-only screen or the like). Indication: The power LED (red) flashes twice
ON
0.2 0.2
OFF
0.2
1.4
(seconds)
4 +B Under-voltage Protector Circuit: The voltages at the 10V, 25V, 32V, -8V and -25V lines of the switching regulator are detected. The circuit is activated if any of the voltages drops below its specified level. 5 +B Over-voltage Protector Circuit: The voltages at the 10V, 25V, 32V and -25V lines are detected. The circuit is activated if any of the voltages rises above its specified level. Indication: The power LED (red) flashes three times.
ON
0.2
OFF
0.2
0.2
0.2
0.2
6 IC507 (DEF PROCESSOR) I2C Bass ERROR Protector: If for any reason, the IC507 fails to return an ACKNOWLEDGE signal to the microprocessor.
ON
OFF
0.4 0.2
0.2
0.4
2. Stop of Protector Operation
The protector may be kept inactive by opening the detection circuits or grounding C3230 and C3231 (on the Signal Unit). The vertical output protector circuit, however, cannot be made inactive. Note: Be sure to get the protector back to normal after servicing.
0.2
(seconds)
22
0.2
1.4
(seconds)
|
|
|
> |
|
