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Old 14th January 2011, 12:24 AM   #1
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Default Nakamichi mb2 problem

i bought this unit with door sticking issues upon opening it up found that the laser was dead, i purchased a cheap knock off kss210a to replace it but upon installing it that one does not work,is there a way to test these to make sure power is making it to the laser? i assumed they both were bad when i applied power there is no red light in the laser indicating the unit is actually working.all i get is err code under the s on the front panel.
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Old 14th January 2011, 02:05 AM   #2
singa is offline singa  Singapore
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Hi, I think you forgot to remove the ESD (electrostatic discharge) shorting
links on the tiny pcb where the flexible cable goes.Just use a desoldering pump or solder wick .That should get it operational. There is no need to calibrate just plug and play.

Do not look directly at laser ( 12 o'clock or directly above,look at a distance and angle to prevent eye damage).

regards.
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Old 14th January 2011, 02:20 AM   #3
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removed the esd still no go and i did use caution when looking at the laser i am thinking that the new laser was defective i emailed the seller awaiting a response.
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Old 14th January 2011, 03:59 AM   #4
singa is offline singa  Singapore
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Quote:
Originally Posted by transamz2000 View Post
removed the esd still no go and i did use caution when looking at the laser i am thinking that the new laser was defective i emailed the seller awaiting a response.
Hi, There is the possibility that the flexible cable may be damaged
in the first place due to age or to much bending when the laser
module goes back and forth and human handling like insertion
and removal. Regards.
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Old 14th January 2011, 05:02 PM   #5
Mooly is offline Mooly  United Kingdom
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I'm not familiar with the MB2 but are you sure all the conditions are correct for the laser to emit. Normally you only see the laser light during a focus search routine (when the lens moves up/down 3 times or so). All other times it is off unless playing.

Are you sure it is not a mechanical problem with the loading mech giving incorrect info to the system control IC ?
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