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This service Manual for my JVC AV29BF10EES is very helful. Everything is show in detailed diagrams!!!! If you need really good source of information for this type JVC you are on the right place. I am satisfied and very glad for this excellent book. Thank you.
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Great service, great value like always!!!
Some of the writing is a bit blur but all is usable.
A+++++++++++++++++
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Great service manua!
Always great value and fast service A++++++++++++++++++
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Excellent Service manual, good quality scans, quick service and very good value. Well reccomended ! All good.
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Great value service manual!
Good-quality scans. Detailed and valuable informations.
A+++++++++++++++
SD-EX220H
2-2 Tracking system check. Check the TE waveform at pin 15 on IC1.
If the waveform shown in Figure 7-3-1 appears and soon after NO DISC appears ? No "Initialization" is possible, but play is not possible ? No Yes The tracking servo is not activated. Check the peripheral circuits at pins 14, 15 and 20 on IC1, and CNS1A/B.
Yes
A normal jump operation cannot be completed or the beginning of the track cannot be found. Check the around pin 20 on IC1.
"Initialization" is not possible.
Data cannot be read. Check the VCO-PLL system.
Stopped CH1=10 V DC 10:1
T
CH2=1 V DC 10:1
100 ms/div (100 ms/div) NORM:100 kS/s
TE
2
T 1
DRF
=Filter= Smoothing : ON BW : FULL
=Offset= CH1 : 0.0 V CH2 : 0.00 V CH3 : 0.00 V CH4 : 0.00 V
=Record Length= Main : 100 K Zoom : 2K
=Trigger= Mode : NORMAL Type : EDGE CH1 Delay : 2.924 ms Hold off : 0.2 �s
Figure 7-3-1 2-3 Spin system check.
Press the OPEN/CLOSE switch without inserting a disc, and then try starting the play operation.
1. The turntable rotates a little ? (Waveform drawing Figure 7-3-2) No 2. The turntable doesn't rotate.
The spin driver circuit is OK. Yes
Check around pin 22 on IC1, pins 15 and 16 on IC2, and CNS3A/B.
Stopped CH1=200 mV DC 10:1
T
CH2=500 mV DC 10:1
1999/04/07 09:51:15 500 ms/div (500 ms/div) NORM:20 kS/s
T
FDO
2
1
SPDO
=Filter= Smoothing : ON BW : FULL
=Offset= CH1 : 0.000 V CH2 : 0.000 V CH3 : 0.00 V CH4 : 0.00 V
=Record Length= Main : 100 K Zoom : 2K
=Trigger= Mode : NORMAL Type : EDGE CH2 Delay : 2.924 ms Hold off : 0.2 �s
Figure 7-3-2
7�3
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