Amplifier/Subwoofer BU-80/BU80E/HTS-10
SAFETY INFORMATION/VERSION DIFFERENCES
WarningLeakage/Resistance Check
Any person performing service of this unit will be exposedBefore returning the unit to the customer, perform a leakage
to hazardous voltages and the risk of electric shock. It isor resistance test as follows:
assumed that any person who removes the amplifier fromLeakage Current. Note there is no power switch on this unit.
this cabinet has been properly trained in protecting againstWhen the power plug is plugged in, the unit is live. Connect
avoidable injury and shock. Therefore, any servicethe unit to its rated power source. Using an ammeter,
procedures are to be performed by qualified servicemeasure the current between the neutral side of the AC
personal ONLY!supply and chassis ground of the unit under test. if leakage
current exceeds 0.5mA, the unit is defective. Reverse the
Cautionpolarity of the AC supply and repeat.
Resistance. Measure the resistance from either side of the
This unit does not have a power switch. Hazardousline cord to chassis ground. If it is less than 500k ohms, the
voltages are present within the unit whenever it isunit is defective.
plugged in.
WARNING! DO NOT return the unit to the customer if it
Before the amplifier is plugged in, be sure its rated voltagefails one of these tests until the problem is located and
corresponds to the voltage of the AC power source to becorrected.
used. Incorrect voltage could cause damage to the amplifier
when the AC power cord is plugged in. Do not exceed rated* See Service Bulletin (INF2000-01) page 15.
voltage by more than 10%: operation below 90% of rated
voltage will cause poor performance or may shut the unit** See Service Bulletin (INF2000-02) page 16.
off.
Rev A version of the BU-80/HTS-10 subwoofer uses
List of Safety Components Requiringthe following SAFETY PARTS:
Exact Replacements#80103 - T1 Power Transformer #4300
#80104 - F1 Line fuse 0.5A 250V T type slo-blo
F1 **Fuse SLO BLO 0.50A or 1.0A 250VRev B version of the BU-80/HTS-10 subwoofer uses the
5 x 20mm.UL approvedfollowing SAFETY PARTS:
See Bulletin (INF2000-02) page 16.#80127 - T1 Power Transformer #4300F
PWRCORD SPT-2 or better with polarized plug, UL#80111 - F1 Line fuse 1.0A 250V T type slo-blo
approved wired with the hot side to fusedEither Rev A or Rev B can be identified by:
side. Use with factory replacement panelThe correct fuse rating will be printed on the amplifier
strain relief only.label, also:
T1 **Transformer. Use only factoryBU-80: Rev A version
Replacement.serial #AM0011-29474 and below;
DBR or D001Bridge diode. Use only factoryRev B version serial #AM0011-29475 and
replacement.above.
C1, 2 3300uF, 50V electrolytic filter caps. BeHTS-10: Rev A version serial #AM0011-07400
sure replacement part is at least the sameand below;
working voltage and capacitance rating.Rev B version serial #AM0011-07401 and
Also the lead spacing is important.above.
Incorrect spacing may cause premature
failure due to internal cabinet pressureHTS-10 subwoofer only
and vibration.
C6 *10uF 50V electrolytic radial (BU80 andThere is a third version, ?C?, with minor internal
HTS-10 version ?A?,?B? only)differences.
S53AMI Power output module. Use only factoryData for this version is included, and differences are
or CON101replacementnoted in the manual.
Faceplate Use only factory replacementUnits can be identified for service as follows:
Air leak cover Use only factory replacementAmplifier faceplate says ?Made in Canada? on the ?B?
CMC1 Use only factory replacement
version.
L1 Use only factory replacementAmplifier faceplate says ?Made in China? on the ?C?
Fuse PCB Use only factory replacementversion.
Main PCB Use only factory replacement
R29 470 ohmW METAL OXIDE, non
BU80E = HTS-10 version, ?C?
flammable |
ACEC
HARMAN KARDON
