jedyne do czego mogę mieć zastrzeżenie to jakość zdjęć zawartych w przesłanej instrukcji serwisowej ponieważ są fatalnej jakości, praktycznie nieczytelne. tak poza tym jestem zadowolony to jest to czego szukałem.
Instrukcja jest OK. Schematy czytelne, opisane niektóre procedury.
Tekstowy podgląd strony 3 (kliknij aby zobaczyć)
SECTION 1 SERVICING NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30cm away from the objective lens. Before Replacing the Optical pick-up Block Please be sure to check thoroughly the parameters as per the �Optical pick-up Block Checking Procedure� (Part No. : 9-960027-11) issued separately before replacing the optical Pick-up block. Note and specifications required to check are given below. � FOK output : IC601 ((£ pin (FOK). When checking FOK, remove the lead wire to disc motor. � S curve P-to-P value : 1.2 � 2Vp-p IC501 !§ pin. When checking S curve P-to-P value, remove the lead wire to disc motor. � RF signal P-to-P value : 0.5 � 0.9Vp-p � Traverse signal P-to-P value : 1.2 � 2.0Vp-p � The repairing grating holder is impossible. Laser Diode Checking Methods During normal operation of the equipment, emission of the laser diode is prohibited unless the upper panel is closed while turning ON the S804 (push switch type). The following two checking methods for the laser diode are operable. Method-1 (In the service mode or normal operation) : Emission of the laser diode is visually checked. 1. Open the upper lid. 2. Push the S804 as shown in Fig. 1-1. 3. Press the � key. 4. Check the object lens for confirming normal emission of the laser diode. If not emitting, there is a trouble in the automatic power control circuit or the optical pick-up. During normal operation, the laser diode is turned ON about 2.5 seconds for focus searching.
TP810
AC2211397 current value A : less than 48 mA year month date shift No. line No. version
3. Connect a digital voltmeter as shown in Fig. 1-2 4. Press the � key. 5. Calculate the current value by the reading of the digital voltmeter. Reading of the digital voltmeter V ÷ 4.7 � = current value (A) (Example) Reading of the digital voltmeter of 0.2256 V : 0.2256 V ÷ 4.7 � = 0.048 (A) = 48 mA 6. Check that the current value+5 within the following range. is � Current value of the label -11 mA(25�C) Variation by temperature : 0.4mA / �C Current increases with temperature increased. Current decreases with temperature decreased. If the current is more than the range above, there is a trouble in the automatic power control circuit or the laser diode is in deterioration. If less than the range, a trouble exists in the automatic power control circuit or the optical pick-up.
Q506
