Complete service manual in very good scanning quality with all schematic and PWB graphics as well as assembly & maintenance instructions. A slight drawback is that the rastering of the PWB graphics sometimes makes it a bit difficult to follow fine traces, but no showstopper.
Purchased the manual that I was looking for at a great price and could download it easily.. Great service experience and for future purchases I plan to use the site. Thank you very much
1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use LUV-P01 (4-999-032-01) 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
BD board TP(FEO) TP(DVC) Oscilloscope
Procedure : 1. Connect an oscilloscope to TP (TEO) and TP (DVC). 2. Turn Power switch on. 3. Load a disc (LUV-P01) and playback the number nine track. 4. Press the N button. (Becomes the 1 track jump mode.) 5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.
1 track jump waveform center of waveform B DVC level=1.0 ±0.5Vp-p symmetry A (DC voltage)
Procedure : 1. Connect an oscilloscope to TP (FEO). 2. Connect between TP (FEI) and TP (DVC) ( 1.65 V) by lead wire. 3. Turn Power switch on. 4. Load a disc (LUV-P01) and actuate the focus search. (In consequence of open and close the disc tray, actuate the focus search) 5. Confirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2 ± 0.5 Vp-p.
S-curve waveform symmetry
6. Adjust RV101 on the BD board so that the center of waveform becomes the same voltage of DVC. (i.e. A=0V) Adjustment Location: [BD BOARD] (Conductor Side)
A within 2 ±0.5Vp-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.
Procedure : 1. Connect an oscilloscope CH1 to TP (RFDC) and CH2 to TP (RFAC). 2. Turn Power switch on. 3. Load a disc (LUV-P01) and playback. 4. Confirm that oscilloscope waveform is clear and check if 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.
RV101
RF signal waveform VOLT/DIV : 200mV TIME/DIV : 500ns
