Yamaha DV-C6860 - DVD Changer, Service Manual

DV-C6860

2

DV-C6860

■ 

TO SERVICE PERSONNEL

1. Critical Components Information

Components having special characteristics are marked 

Z

and must be replaced with parts having specifications equal
to those originally installed.

2. Leakage Current Measurement (For 120V Models Only)

When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.

●

Meter impedance should be equivalent to 1500 ohms
shunted by 0.15µF.

●

Leakage current must not exceed 0.5mA.

●

Be sure to test for leakage with the AC plug in both
polarities.

WARNING: CHEMICAL CONTENT NOTICE!

T

he solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where

applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to
solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling
food.

WARNING: Laser Safety

This product contains a laser beam component. This component may emit invisible, as well as visible radia-tion, which may cause eye
damage. To protect your eyes and skin from laser radiation, the following pre-cautions must be used during servicing of the unit.

1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from the laser pick-up

unit at all times. Do not stare at the laser beam at any time.

2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.

3) CAUTION : Use of controls, adjustments or perform-ance of procedures other than those specified herein may result in hazardous

radiation exposure.

Laser Emitting conditions:

1

) When the Top Cover is removed, and the STANDBY/ ON SW is turned to the “ON” position, the laser compo-nent will emit a beam for

several seconds to detect if a disc is present. During this time (5–10 sec.) the laser may radiate through the lens of the laser pick-up unit.
Do not attempt any servicing during this period! If no disc is detected, the laser will stop emitting the beam. When a disc is loaded, you
will not be exposed to any laser emissions.

2) The laser power level can be adjusted with the VR on the pick-up PWB, however, this level has been set by the factory prior to shipping

from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this manual. Adjustment of this con-trol
can increase the laser emission level from the device.

Laser Diode Properties

Type:

Semiconductor laser GaAlAs

Wave length:

650 nm (DVD)
780 nm (VCD/CD)

Output Power:

7 mW (DVD/VCD/CD)

Beam divergence

60 degree

VARO! :

AVATTAESSA JA SUOJALUKITUS
OHITETTAESSA OLET ALTTIINA
NÄKYMÄTTÖMÄLLE LASER-SÄTEILYLLE.
ÄLÄ KATSO SÄTEESEEN.

VARNING! :

OSYNLIG LASERSTRÅLNING NÄR DENNA
DEL ÄR ÖPPNAD OCH SPÄRREN ÄR
URKOPPLAD. BETRAKTA EJ STRÅLEN.

AC LEAKAGE
TESTER OR
EQUIVALENT

EQUIPMENT
UNDER TEST

INSULATING
TABLE

WALL
OUTLET