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The service manual was very usable and clear enough to see the individual values of all of the components (unlike some of the service manuals I have gotten in the past from web sites similar to this one). The price was right and the information was greatly appreciated. It helped me with an otherwise very difficult repair. It was much needed and appreciated. A faster turn around on my order would be nice, but I understand the constraints on your staff's time. Thank you for your service.
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Excellent manual. Helped me out with disassembling and troubleshooting my projector.
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thanks you are the best.Very good detail, Quick service response. A useful service manual with all details.
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Great service!!! Polecam gorąco wszystkim zainteresowanym
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I liked the price plus it had everything i needed to service the tv.
thankyou Tim Hertz
XL-HP434H
(1) Focus-HF system check. Although a CD is inserted and the cover is closed, "NO DISC" is displayed.
Press the Tray1 CD Eject Button without inserting a disc, and try starting the playback operation.
T
Stopped CH1=500 mV DC 10:1
CH3=500 mV DC 10:1
500 ms/div (500 ms/div) NORM:20 kS/s
FDO
1
TDO
3
CH1 v/DIV 500 mV =Filter= Smoothing : ON BW : FULL =Offset= CH1 : 0.000 V CH2 : 0.0 V CH3 : 0.000 V CH4 : 0.00 V =Record Length= Main : 100 K Zoom : 2K =Trigger= Mode : AUTO Type : EDGE CH1 Delay : 0.0 ns Hold off : 0.2 µs
Figure 1 1. Does the pickup move to the PICKUP-IN Switch (SW1A) position? No Sled motor (M2A).
Yes 2. Does the focus (lens) move up and down? (Waveform drawing Figure 1)
No
Check the focus peripheral circuit.
Yes 3. Is the laser lit? No Check the laser diode driver Q1 peripheral circuit.
Yes 4. Is the turntable rotating? No Spindle motor (M1A).
When a disc is loaded, start playback operation.
1. Is focus servo activated? (Waveform drawing Figure 2)
No
Pins 7~11, 13,19 and 20 on IC1 Check the laser diode driver Q1 peripheral circuit.
Yes 2. Does DRF change from "L" to "H"?
No
Is the disc rotating?
No
Check the spin system. If the disc is spinning and a HF waveform is generated, DRF will go H.
Yes 3. Is the HF waveform normal? (Waveform drawing Figure 3) No If the level is not normal.
Stopped CH1=500 mV DC 10:1
CH2=10 V DC 10:1
CH3=1 V DC 10:1
500 ms/div (500 ms/div) NORM:20 kS/s
FDO
1
T 2
DRF
TE
3
CH Position To -3 div -1 div 0 div +1 div +3 div =Filter= =Offset= =Record Length= Smoothing : ON CH1 : 0.000 V Main : 100 K BW : FULL CH2 : 0.0 V Zoom : 2K CH3 : 0.00 V CH4 : 0.00 V
CH2 Position 0.20 div =Trigger= Mode : AUTO Type : EDGE CH1 Delay : 0.0 ns Hold off : 0.2 µs
Vp-p=1.0 V~1.3 V 0.5 mV/div,0.5 µsec/div
Figure 2
Figure 3
7�2
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