Notes On Handling The Laser Diode; Base Unit (Ddx-G3000)]; (D9001: Mvc-Cd400) - Sony MVC-CD250 Service Manual

MVC-CD250/CD400

1-3. NOTES ON HANDLING THE LASER DIODE

[LASER UNIT (D9001: MVC-CD400) AND BASE UNIT (DDX-G3000)]
The laser diode may suffer electrostatic breakdown because of the
potential difference generated by the charged electrostatic load, etc.
on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
1-3-1. Precaution for Checking Emission of Laser
Diode [Base Unit (DDX-G3000)]
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface of
the disc. Therefore, be sure to keep your eyes more then 30 cm
apart from the object lens when you check the emission of laser
diode.
1-3-2. Soldering Conditions of Laser Unit
Temperature of
the Soldering Iron
Time to Solder
Interval to Solder
Optical pick-up
(Laser diode)
1-2

(D9001: MVC-CD400)

350 °C
3 seconds
Next terminal is soldered after
waiting for 1 second
Laser unit
(D9001)
[MVC-CD400]