Safety Precaution For Service Manual - Sharp MD-X7H Service Manual

MD-X8H

SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS (CD)
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
OBSERVED DURING SERVICING TO PROTECT YOUR
EYES AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER IS
TURNED ON WITDOUT A COMPACT DISC IN POSITION
AND THE PICK-UP IS ON THE OUTER EDGE THE LASER
WILL LIGHT FOR SEVERAL SECONDS TO DETECT A
DISC. DO NOT LOOK INTO THE PICK-UP LENS.
2-THE LASER POWER OUTPUT OF THE PICK-UP UNIT
AND REPLACEMENT SERVICE PARTS ARE ALL
FACTORY PRE-SET BEFORE SHIPMENT.
DO NOT ATTEMPT TO RE-ADJUST THE LASER PICK-
UP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICK-
UP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR
PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.
ANTENNA
AM
LOOP
FM
75 OHMS
ANALOG IN/OUT
RIGHT LEFT
OUT SPEAKERTS
RIGHT LEFT
AUX 2
IN
RIGHT LEFT RATED SPEAKER
IMPEDANCE : 6 OHMS
GND
PHONE
RESET
AUX DIGITAL IN
DIGITAL 1
OPTICAL
DIGITAL 2
COAXIAL
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
CAUTION
Use the MD/CD component system only in ac-
cordance with the instructions given in this manual
and do not attempt to interfere with the interlock
switch or make any other adjustment as this may
result in exposure to hazardous radiation.
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.
The AEL (ACCESSIBLE EMMISSION 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
The laser will light for several second to detect a disk.
2) The laser power output of the pickup unit and replacement
Do not attempt to re-adjust the laser pick-up unit during
3) Under no circumstances stare into the pickup lens at any
4) If laser optical unit becomes faulty, replace the complete
5) CAUTION-USE of controls or adjustments, or performance
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA
EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD.
STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT
INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE
INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.
– 2 –
WARNINGS (MD)
(SW 1956) is turned on and then PLAY SW (SW 1954
mechanism PWB) is turned on in a few second.
service parts are all factory pre-set before shipment.
replacement or servicing.
time.
laser optical unit.
of procedures other than those specified herein may result
in hazardous radiation exposure.
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 LASERSTRALNING NAR DENNA DEL AR OPPNAD OCH
SPARRAR AR URKOPPLADE . STRALEN AR FARLIG.
ADVARSEL - USYNLIG LASERSTRALING NAR DEKSEL APNES OG SIKKERHEDSLAS
BRYTES . UNNGA EKSPONERING FOR STRALEN .
VARO! AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
NAKYMATON LASERSATEILYLLE . ALA KATSO SATEESEN .
VARNING - OSYNLIG LASERSTRALING NAR DENNA DEL AR OPPNAD OCH SPARREN
AR URKOPPLAD . BETRAKTA EJ STRALEN .
ADVARSEL - USYNLIG LASERSTRALING VED ABNING . NAR SIKKERHEDSAFBRYDERE
ER UDE AF FUNKTION . UNDGA UDSETTELSE FOR STRALING .
Figure 2-1
Magnet Head
Spindle Motor
Figure 2-2
Magnetic Head
Optical pickup
Laser Beam
Cartridge Holder
Mechanism
Chassis
Optical pickup