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It's a full manual. All the parts are in there. I haven't found the problem yett, but I am working on it; hope I can rebuild the part myself. To make it more secure and unbreakable this time. Because the part has failed several times before and costs a lot to let it be repaired.
Thanks so much for this rich illustrated and parted manual.
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I downloaded the document. The manual was complete, well scanned and everything was legible. I could zoom in see what I needed to know. There's not much more that you can ask.
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It was complete service manual with all needed service informations. Thanks.
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El manual esta muy detallado, los numeros de partes y los esquemas de despiece son correctísimos y muy claros, tanto para los técnicos experimentados como para los novatos.
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Ottima qualità grafica e completo nelle notizie. Costo abbastanza contenuto.
SECTION 6 ELECTRICAL ADJUSTMENTS
Note: 1. Perform adjustments as given. 2. Power supply voltage: DC14.4 V (more than 3A).
� TRACKING OFFSET CHECK
[RF BOARD] � Conductor Side �
� FOCUS BIAS CHECK
CNJ12
[RF BOARD] � Conductor Side �
oscilloscope + � BP11 (TE)
+ �
oscilloscope CNJ12 TP (RF)
IC51
TP (VC) IC11
TP (VC) IC11
Procedure: 1. Connect the oscilloscope to BP11 (TE) and TP (VC) on the RF board. 2. Put the set into play mode by loading the disc. 3. Press the = AMS + button, and check the traverse waveform*.
IC51
Procedure: 1. Connect the oscilloscope to TP (RF) and TP (VC) on the RF board. 2. Put the set into play mode by loading the disc. 3. 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.
4. Confirm that the oscilloscope waveform is symmetrical on the top and bottom in relation to 0 V dc, and check this level.
* Traverse waveform: This is the tracking error wave form appears when crossing the track.
Traverse waveform
VOLT/DIV : 500 mV TIME/DIV : 2 ms Center : 0 V
RF signal waveform VOLT/DIV: 200 mV TIME/DIV: 500 ns level: 1.4 ± 0.3 Vp-p
A 0V B A=B traverse waveform (100 track jump waveform)
� 16 �
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