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SERVICE POLICY AND LIMITED WARRANTY

The PS0.5 Power Amplifier has been carefully  engineered to

provide many years of trouble-free service. Every unit is tested

before and after a 24 hour ‘burn-in’ under load. ensuring that

any marginal component or operating condition is corrected,

and that all operating parameters are stabilized before the unit is

released for shipment.

If  a problem arises, we urge you to take advantage of the

factory service facilities. Many of the components in the P505

are not readily obtainable in the field. and performance is likely

to  suffer by the use of ‘similar type’ substitutions. 

Priority

Service  is provided for all Hafler Professional products.

Requests  for technical assistance or parts replacements may be

telephoned to (609)  662-6084  from  8AM  to  4PM eastern time

on weekdays. Please have the unit serial number at hand. While

we are glad to help. we do not recommend that you perform

your  own service unless you have considerable technical

experience.

It is the owner’s responsibility to ship the unit prepaid to the

factory  service  facility. Collect shipments will be refused. Use

the complete original carton and all packing materials to ship the

amplifier.  Enclose the following information:

1.  The complete return shipping address. (Post Office box

numbers  are acceptable only for correspondence, not for

shipment). A daytime telephone contact may be helpful if our

service department has any questions.
2.  The unit serial number.
3.  copy of  the bill of sale, if service is expected

under the

warranty.
4.  A description of the malfunction, under

occurred. and whether it is intermittent.

what  conditions it

You are responsible for proper packing. Insure it for the retail

value.  United Parcel Service is suggested for domestic

shipments, and is the usual carrier for its return. Units which

required service under the warranty will normally be returned by

UPS prepaid, within continental USA. Other return shipments

will be at the owner’s expense. All service work is guaranteed

for 90 days.

If  you choose. you may return only the complete audio

module  for service. if the fault has been isolated therein. It

should  be insured for $400. Or, you can remove the power

transformer to reduce weight and the likelihood of damage in

shipment.  See “Trouble  Shooting Hints”. Unsolder, do not

cut, transformer leads in particular, for the transformer warranty

is voided if the leads are cut too short for re-use. The Hafler

Company  will not be responsible for consequential damage

caused  by removal and/or reinstallation of the module or

transformer.

WARRANTY

The P505 is warranted for three years from the purchase date.

including parts. labor and normal return shipping costs from the

service facility to the owner, within the continental USA. The

owner  is responsible for shipment to the service facility. and

must submit a copy of the dated bill of sale. Warranties apply to

the original purchaser only. The warranty is void if the P5O5 has

been modified without factory authorization. or if it has been

electrically or physically abused, or if it has been used for some

purpose for which it was neither designed nor intended.

This warranty gives you specific legal rights.

have other rights which vary from state to state.

You may also

Prlnted   In   U S A

Содержание P505

Страница 1: ...PERATION CAUTION IF THE SPEAKER FUSES BLOW SOME DISTORTED SOUND CAN BE HEARD THEREFORE IF AMPLIFIER MALFUNCTIONS ALWAYS CHECK FOR BLOWN FUSES FIRST LM135 THE DAVID HAFLER COMPANY 5910 Crescent Boulevard Pennsauken New Jersey 08109 Hafler P505 Professional Power Amp ...

Страница 2: ...ferred to 1 watt into 8 ohms A weighting Input Impedance 47 000 ohms in parallel with 50K ohms input level control Input Sensitivity 2 35 volts for 255 watts into 8 ohms 0 14 volt for 1 watt 2 volts for 400 watts into 4 ohms 0 08 volt for 1 watt Damping Factor 200 to 1 kHz into 8 ohms 60 to 10 kHz into 8 ohms Rise Time 10 kHz 80 volts p p square wave 10 to 90 2 5µs Slew Rate 1 kHz 120 volts p p sq...

Страница 3: ... and equipment service and provides a high level of protection to associated equipment and operating personnel P505 POWER AS A FUNCTION OF IMPEDANCE POWER PER CHANNEL BOTH CHANNELS DRIVEN The P505 incorporates a number of protective devices Separate power supply fuses for B and B on each channel individual thermal sensors on each heat sink a relay to disengage the output if excessive DC offset is ...

Страница 4: ...avier 3 wire cord Input The amplifier is supplied with standard 2 circuit tip sleeve or T S phone jacks for normal unbalanced input connections These use single conductor shielded cable shield connected to the sleeve or you may choose two wire shielded cable With two wire cables and an unbalanced input the signal or hot black lead connects to the plug tip and the ground white or red lead connects ...

Страница 5: ...r the rubber clad cables with woven shielding outperform vinyl coverings The vinyl insulation is usually supplied with a foil shield which can be easily tom so plugs must be wired with great care If permanent wiring involves fishing cables through conduits the vinyl cable is easier to use because it has less surface resistance but the foil shield is susceptible to splitting with undue stress Some ...

Страница 6: ...al having a specific porosity so exact replacement is best They may be ordered from the Hafler Company as part AF002 6 Back Panel Controls An input level control adjusts the sensitivity of each channel They are usually left at full clockwise rotation for maximum sensitivity and best signal to noise ratio Then 2 volts will drive each channel to full output 4 ohm load These controls have a B taper w...

Страница 7: ...50 or 60 Hz power lines The Export version includes an additional terminal strip to terminate the extra transformer leads In units supplied for 200 volt and higher AC lines the line fuse is a 7 ampere slo blo type and a different fan is installed along with different fan controlling power resistors which are mounted on the underside of the audio module The diagrams below show schematically and pic...

Страница 8: ...low impedance load where the fuse sizes may need to be increased If the amplifier requires factory service and the power transformer output appears normal when its secondary leads are disconnected from the diode bridge the transformer can be removed and the rest of the amplifier returned for service This greatly reduces the cost of shipping and the risk of damage in transit If you have isolated th...

Страница 9: ...iven in the event of excessive signal levels The output current is limited by the B and B fuses and the speaker fuses A protective relay circuit has a j section low pass filter which prevents signals above 10 H z from triggering the relay This circuit allows direct current to pass to IC101 which senses any offset above 3 5 volts and then opens the relay to protect the load RI06 and R107 form the r...

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Страница 12: ...ch QBI I5 TAI I2 RPOI I RPOI I RF036 TAI I6 TAI I7 SZI 13 SLIII s402 S403 TR40 I TR402 TR40 I TS40 I TS402 DPDT slide switch DPDT slide switch Thermal breaker Thermal breaker Inrush limiter Thermal sensor Thermal sensor Fan I20 volt Fan 200 240 volt alternate SCHEMATIC DIAGRAM P505 PowerAmplifier r Copyright 1985 All rights reserved SZl22 SZl22 S F 0 2 4 S F 0 2 4 RZOl6 S F 0 2 5 S F 0 2 5 AAI I4 ...

Страница 13: ...anty 4 A description of the malfunction under occurred and whether it is intermittent what conditions it You are responsible for proper packing Insure it for the retail value United Parcel Service is suggested for domestic shipments and is the usual carrier for its return Units which required service under the warranty will normally be returned by UPS prepaid within continental USA Other return sh...

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