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This is a service manual in every sense of the word ( French and German versions of the text are included, as well as English..)
There are explanations of the mechanical and electrical functions, plenty of mechanical drawings, and the needed schematics. The quality of the scanning is excellent - all the component values are clearly legible - and very usefully there are pcb component layouts, so you can find a component on the schematic, and then very quicky pinpoint its physical location on the relevant pcb.
I cannot see how I can give this manual any less than the maximum 5 stars! Great value for money, which will pay for itself immediately. Excellent all round!
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the manual is great and especially hard to find... thanks for the great service and having a hard to find manuel_
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Please tell us what you think and share your opinions with others. Be sure to focus your comments on the product. You will receive $2.50 of store credit for Your review.
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hat alles sehr gut geklappt. Das Servicemaual ist gut zu verwenden. Die Pläne und Schrift
ist klar und leserlich. Außerdem preiswert. Grüße an alle Hifi-Bastler
;
I got the manual quickly after the payment was transfered (1 day). The manual was exactly what i needed and the updates via e-mail were great. Thanx!
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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