|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
;
A complete manual with all the needed details of calibrations and service instructions about the radio receiver.
A big deal.
Many thanks !
;
Fast delivery and good quality copy. To be recommended
;
Excellent product, very clear print. Detailed circuit and assembly diagrams - this enabled me to repair my CD player with confidence. I highly recommend this site.
;
Fast access, 100% correct and complete service manual
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. 5. Adjust the focus bias adjustment when optical block is replaced.
S Curve Check
oscilloscope BD board TP (FEO) TP (VC) + �
Procedure: 1. Connect oscilloscope to test point TP (FEO). 2. Connect between test point TP (FOK) and GND by lead wire.
Focus Bias check
oscilloscope (DC range) BD board TP (RF) VC + �
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
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
symmetry
A within 3 ± 1 Vp-p B
6. After check, remove the lead wire connected in step 2.
Notes: � 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 ± 0.3Vp-p
RF Level Check
oscilloscope BD board TP (RF) TP (VC) + �
Procedure: 1. Connect oscilloscope to test point TP (RF) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in and playback. 4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.
Note: Clear RF signal waveform means that the shape ��� can be clearly distinguished at the center of the waveform.
� RF signal
VOLT/DIV: 200 mV TIME/DIV: 500 ns
level: 1.3 ± 0.3Vp-p
� 23 �
|
|
|
> |
|
