Marantz CD63 & CD67 mods list - Page 1373 - diyAudio
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Old 14th December 2009, 08:35 AM   #13721
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Look at the back ground of the sell, seems the fight is on
Wich one of you is the CD Mod Guru?
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Old 14th December 2009, 08:43 AM   #13722
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Brent
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Old 14th December 2009, 08:54 AM   #13723
Thomo is offline Thomo  United Kingdom
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I cannot understand why someone would feel so threatened by a nooble_cd_mod_guru_meister

Lee.
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Old 14th December 2009, 08:59 AM   #13724
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LOL

I used his image (like everyone else does on ebay) to sell one of his products and he complained like a baby. So I relisted and took a piccy that is very similar to the one he uses lol.

It did annoy me a little.

Brent
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Old 14th December 2009, 09:04 AM   #13725
6h5c is offline 6h5c  Netherlands
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Maybe you shouldn't have mentioned the "C2 upgrade" part
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Old 14th December 2009, 09:14 AM   #13726
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LOL That may have upset him. People always say why they are selling - don't they?

Brent
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Old 14th December 2009, 09:25 AM   #13727
6h5c is offline 6h5c  Netherlands
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Yes, that is considered good practice!
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Old 14th December 2009, 11:07 AM   #13728
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From the SAA7345 datasheet:

The motor servo has the operation modes as shown in Table 9 and is controlled by the motor mode register
(address 0001).

MODE DESCRIPTION
Start mode 1 Disc is accelerated by applying a positive voltage to the spindle motor. No decisions are involved and the PLL is reset. No disc speed information is available for the microcontroller.

Start mode 2 The disc is accelerated as in Start mode 1, however the PLL will monitor the disc speed. When the disc reaches 75% of its nominal speed, the controller will switch to Jump mode. The motor status signals are valid (register 0010).

Jump mode Motor servo enabled but FIFO kept reset at 50%. The audio is muted but it is possible to read the subcode.

Jump mode 1 Similar to Jump mode but motor integrator is kept at zero. Used for long jumps.

Play mode FIFO released after resetting to 50%. Audio mute released.

Stop mode 1 Disc is braked by applying a negative voltage to the motor. No decisions are involved.

Stop mode 2 The disc is braked as in Stop mode 1, but the PLL will monitor the disc speed. As soon as the disc reaches 12% of its nominal speed, the MOTSTOP status signal will go HIGH and switch the motor servo to off mode.

Off mode Motor not steered.

---

My decoder seems to be in Start mode 1 permanently, as it just goes and goes at max. speed. Could this be caused by absence of PLL signal, in turn caused by absense of proper signal HFREF and HFIN (pins 8 and 9) ?
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Old 14th December 2009, 11:11 AM   #13729
SimontY is offline SimontY  United Kingdom
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Steve,

Usually when a CD63/7 fails it's because a voltage rail has been knocked off, something has been shorted out or one of the two ribbon connectors has failed.

If none of your chips have been fried then check all their voltages, not just the one you've just done. Check your clock is connected ok and has the correct voltage (if used).

If these things are ok and visually everything looks spot on and there are no bad smells then fiddle with the ribbon connectors, carefully.

Have you regulated the servo drivers? This can stop it from working or make it intermittent.

Simon
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Old 14th December 2009, 11:37 AM   #13730
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Simon,
Thanks. I hope the Decoder wasnt fried... did smell anything and visually looks ok... I suspect though that the SAA7345 is sending out a command to the servo amps/motor to start running. Not sure if that would be a response that could be sent out from a fried chip (probably it would not send out anything at all).

TDA1301 is regulated, but I tested it prior to regulating the decoder, and then it worked. It stopped working when I regulated the decoder.

Clock setup is still stock. I'll check the voltages of the chips, need to buy a scope to find out more I think...
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