To Service Personnel - Yamaha KMA-1080 Service Manual

KMA-1080/KMA-980
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TO SERVICE PERSONNEL

1. Critical Components Information
Components having special characteristics are marked Z
and must be replaced with parts having specifi cations 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 shunt-
ed by 0.15µF.
"CAUTION"
"F401: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE
2.5A, 250V FUSE."
A V
"F402: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE
4A, 250V (KMA-1080) / 3.15A, 250V (KMA-980) FUSE."
WARNING: CHEMICAL CONTENT NOTICE!
This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY
REASON WHAT SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or ex-
pose eyes to solder/fl ux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.
About Lead Free Solder
All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder.
Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair work.
• Sn + Ag + Cu (tin + silver + copper)
• Sn + Cu (tin + copper)
• Sn + Zn + Bi (tin + zinc + bismuth)
Caution:
As the melting point temperature of the lead free solder is about 30°C to 40°C (50°F to 70°F) higher than that of the lead solder, be
sure to use a soldering iron suitable to each solder.
WARNING: Lithium batteries
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
WARNING: Lithium batteries are dangerous because
they can be exploded by improper handling. Observe
the following precautions when handling or replacing
lithium batteries.
• Leave lithium battery replacement to qualifi ed service
personnel.
• Always replace with batteries of the same type.
• When installing on the PC board by soldering, solder
using the connection terminals provided on the battery
cells. Never solder directly to the cells. Perform the
soldering as quickly as possible.
• Never reverse the battery polarities when installing.
• Do not short the batteries.
• Do not attempt to recharge these batteries.
• Do not disassemble the batteries.
• Never heat batteries or throw them into fi re.
2
EQUIPMENT
WALL
OUTLET UNDER TEST
INSULATING
TABLE
Leakage current must not exceed 0.5mA.
●
● Be sure to test for leakage with the AC plug in both
polarities.
ADVARSEL!
Lithiumbatteri –Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat
og type. Levér det brugte batteri tilbage til leverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte. Använd samma
batterityp eller an ekvivalent typ som rekommenderas av
apparattillverkaren. Kassera använt batteri enligt fabri-
kantens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittele-
maan tyyppiin. Hävitä käytetty peristo valmistajan ohje-
iden mukaisesti.
AC LEAKAGE
TESTER OR
EQUIVALENT