To Service Personnel - Yamaha DP-U50 Service Manual

DP-U50
QQ
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I 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.
G Meter impedance should be equivalent to 1500 ohm shunted
by 0.15µF.
G Leakage current must not exceed 0.5mA.
"CAUTION"
"F1 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.0A, 125V FUSE."
A V
CAUTION
F1 : REPLACE WITH SAME TYPE 1.0A, 125V FUSE.
ATTENTION
F1 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.0A, 125V.
WARNING: CHEMICAL
CONTENT NOTICE!
TE
L 13942296513
The 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.
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EQUIPMENT
WALL
OUTLET UNDER TEST
INSULATING
TABLE
G Be sure to test for leakage with the AC plug in both
polarities.
Q Q
3 6 7 1 3 1 5
co
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9 4 2 8
AC LEAKAGE
TESTER OR
EQUIVALENT
0 5 8 2 9 9 4 2 8
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