CD-MD3000H/CD-MD3000W
– 2 –
SAFETY PRECAUTION OF MD SECTION FOR SERVICE MANUAL
The AEL (ACCESSIBLE EMISSION LEVEL) of the laser power output is less than class 1 but the laser component is capable of emitting
radiation exceeding the limit for class 1. Therefore it is important that the following precautions are observer during servicing to protect your
eyes against exposure to the laser beam.
1) When the unit case cover is removed and LOADING SW (SW 1956) is turned on and then PLAY SW (SW 1954 mechanism PWB) is turned
on in a few second.
The laser will light for several second to detect a disk.
2) The laser power output of the pickup unit and replacement service parts are all factory pre-set before shipment.
Do not attempt to re-adjust the laser pickup unit during replacement or servicing.
3) Under no circumstances stare into the pickup lens at any time.
4) If laser optical unit becomes faulty, replace the complete laser optical unit.
5) CAUTION-USE of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous
radiation exposure.
VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.
VARNING! Osynlig laserstralning när denna del är öppnad och spärren är urkopplad. Betrakta ej strälen.
Precaution to be taken when replacing and servicing the laser pickup.
The following precautions must be observed during servicing to protect your eyesvagainst exposure to the laser.
Warning of possible eye damage when repairing:
If the AC power plug is connected when the inner cover of the unit is removed, the laser will light up during focus access (about
1 second) (Fig. 2-1).
During this operation, the laser will leak from the opening between the magnetic head and cartridge holder (Fig. 2-2).
In order to protect your eyes, you must not look at the laser during repair.
Before repairing, be sure to disconnect the AC power plug.
Figure 2-1 Figure 2-2
Magnetic Head
Optical Pickup
Magnetic Head
Optical PickupSpindle Motor
Laser Beam
Cartridge Holder
Mechanism
Chassis
Laser Diode Properties
● Material: GaAlAs
● Wavelength: 785 nm
● Pulse time:
Read mode: 0.8 mW Continuous
Write mode: max 10 mW 0.5S
min cycle 1.5S
Repetition
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED
AVOID EXPOSURE TO BEAM .
VARNING - OSYNLIG LASERSTR LNING N R DENNA DEL R …PPNAD OCH SP RRAR
R URKOPPLADE. STR LEN R FARLIG.
ADVARSEL - USYNLIG LASERSTR LING N R DEKSEL PNES OG SIKKERHEDSL S
BRYTES. UNNG EKSPONERING FOR STR LEN.
VARO! AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
N KYM T…N LASERS TEILYLLE. L KATSO S TEESEN.
VARNING - OSYNLIG LASERSTR LING N R DENNA DEL R …PPNAD OCH SP RREN
R URKOPPLAD. BETRAKTA EJ STR LEN.
ADVARSEL - USYNLIG LASERSTR LING VED BNING N R SIKKERHEDSAFBRYDERE
ER UDE AF FUNKTION. UNDG UDSETTELSE FOR STR LING.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ KÄYTTÖOHJEESSA MAI
NITULLA TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA BRUKSANVISNI
NG SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING,
SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
WARNINGS
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