|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
Thanks God for the internet and thanks for the service like this - proffessional solution on time.
;
About the service it's very fast and reliable. About the manual the quality is high enough to read even the tiniest details on the wiring diagrams so you can't ask much more than that, let it alone for a manual of a product from 20 years ago. Thank you, very satisfied.
;
The downloaded quality was as good as the orignial
 ;
This is a great and complete Service Manual for the Sharp GF8585HB. Giving full and detailed technical insight. Good to find these manuals online.
;
Everything was ok with the manual. If I have a small complaint, is that I ordered it during the weekend and I think you guys were closed. But I did receive it late Sunday. I will surely order from you again
CD SECTION
Note: 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.
S Curve Check
oscilloscope BD board TP (FEO) TP (VC) + �
Focus Bias check
oscilloscope BD board TP (FEO) TP (VC) + �
Procedure: 1. Connect oscilloscope to test point TP (RF). (GND terminal: VC) 2. Turned Power switch on. 3. Put disc (YEDS-18) in and playback. 4. Confirm that the shape ��� can be clearly distinguished at the center of the waveform and check the RF signal level. � RF signal
VOLT/DIV: 200 mV TIME/DIV: 500 ns
Procedure: 1. Connect oscilloscope to test point TP (FEO). 2. Connect between test point TP (FOK) and GND by lead wire. 3. Turn Power switch on. 4. Put disc (YEDS-18) in and turned Power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out.) 5. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 3 ± 1 Vp-p.
S-curve waveform symmetry A within 3 ± 1 Vp-p B
6. After check, remove the lead wire connected in step 2.
Note: � Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. � Take sweep time as long as possible and light up the brightness to obtain best waveform.
level: 1.3 ± 0.3 Vp-p
RF Level Check
oscilloscope BD board TP (RF) TP (VC) + �
Procedure: 1. Connect oscilloscope to test point TP (TEO) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in to play the number five track. 4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. � SF signal
VOLT/DIV: 200 mV TIME/DIV: 500 ns
level: 1.3 ± 0.3 Vp-p
Note: Clear RF signal waveform means that the shape ��� can be clearly distinguished at the center of the waveform.
� 20 �
|
|
|
> |
|
