Technics SE-HDA710 User manual

ORDERNO. AD0008145C2
Amplifier
SE-HDA710
Colour
(N).......................GoldType
Areas
EB.......................Great Britain.
EG.......................Europe.
System:SC-HDA710
Because ofuniqueinterconnecting cables, whena
compact requires service, send or bring intheentire
system.
SPECIFICATIONS
Specification

Amplifier Section (Lowfrequencyside)
Power output
DIN100Hz, THD 1%, 4 both channels
driven:
2x12W
RMS 100Hz, THD 10%, 4 both channels
driven:
2x15W
Load impedance: 4
Amplifier Section (Mid Frequencyside)
Power output
DIN1kHz, THD 1%, 8 both channels
driven:
2x8W
RMS 1kHz, THD 10%, 8 both channels
driven:
2x10W
Total harmonicdistortion
Halfpower at1kHz8 : 0.09%
Load impedance: 8
S/N: 81dB
S/N(2VInput, Rated power output): 100dB
Amplifier Section (High frequencyside)
Power output
DIN10kHz, THD 1%, 4 . both channels
driven:
2x4W
RMS 10kHz, THD 10%, 4 both channels
driven:
2x5W
Load impedance: 4
Headphones
Jack type: 3.5mm STEREO
Load impedance: 16-32
General
Power consumption 115W
STANDBYcondition Normal:11W
Eco:0.9W
Power supply
[For(EG)area]: AC230V,50Hz
[For(EB)area]: AC230-240V,50Hz
Dimensions(WxHxD): 196x105.8x261mm
Weight: 3.6kg
Notes:
1.Design and specificationsare subjectto changewithout
notice.
2.Dimensionsand weightare approximate.
3.Total harmonicdistortion ismeasured bythedigital
spectrumanalyzer.
System/SC-HDA710:
Tuner:ST-HDA710, DVDAudio/Video Player:SL-HDA710,
Amplifier:SE-HDA710 , CassetteDeck:RS-HDA710, Speakers:
SB-HDA710 (Madein MAES.)

ó

2000 Matsushita ElectricIndustrial Co., Ltd. / / All rights
reserved. Unauthorizedcopying and distribution isaviolation of
law.
1. Accessories
2. Before Repairand Adjustment
1. Turn off thepowersupply. Using a10 , 10Wresistor, connect
bothendsofpowersupplycapacitors(C102-105, 127) inorderto
dischargethevoltage.
2. Beforeturning thepowersupplyon, aftercompletion ofrepair,
slowlyapplytheprimaryvoltagebyusing apowersupplyvoltage
controllertomake surethat theconsumedcurrentat 50/60 Hzin
NO SIGNALmodeshouldbeshownbelowwithrespect tosupply
voltage230 V/240 V.
Areas (EG) (EB)
Powersupplyvoltage AC 230V AC 230-240V
Consumedcurrent 50 Hz 90-180 mA 50 Hz 90-180 mA

3. Aboutthe Protection Circuitry
The protection circuitrymayhave operatedifeitherof the following conditions is noticed:
*Nosound is heardwhenthe poweris supplied.
*Sound stops during a performance.
The functions of this circuitryis to prevent circuitrydamage, forexample, the positive and
negative speakerconnection wires are “shorted”, orifspeakersystems with animpedande less
thanthe indicatedratedimpedance of thisunitare used.
Ifthis occurs, followthe procedure outlinedbelow:
1. Press theSTANDBY /ONbutton, switchtoSTANDBY mode.
2. Determinethecause oftheproblemand correct it.
3. Press theSTANDBY /ONbutton once again, supplythepower.
Note:
Whenthe protection circuitryfunctions, the unitwill not operate unless the STANDBY /ON
button is firstswitchedSTANDBYand thenON again.
4. Caution for ACMainLead
5. Operating Instructions
6. Operation Checks and ComponentReplacement
Procedures
-Thissection describes procedures for checking theoperation of
themajor printedcircuitboardsand replacing themain
components.
-For reassemblyafteroperation checks or replacement, reverse the
respectiveprocedures. Special reassemblyprocedures are
describedonlywhenrequired.
6.1. Checking for thepowersupply(1) P.C.B., powersupply(2)
P.C.B. and speakerterminal P.C.B.

-Check thepowersupply(1) P.C.B., powersupply(2) P.C.B. and
speakerterminal P.C.B. as shownbelow.
6.2. Checking for theoperation P.C.B.
-Followthe(Step1) -(Step3) ofitem6.1.
-Check theoperation P.C.B. as shownbelow.

6.3. Checking for themainP.C.B.
-Followthe(Step1) -(Step3) ofitem6.1.
-Check themainP.C.B. as shownbelow.

6.4. Replacementfor thepowerIC
-Followthe(Step1) -(Step3) ofitem6.1.
-Followthe(Step1) -(Step4) ofitem6.3.

7. Power Source ON/OFF and Signal Check
Tooperate this unitSE-HDA710 normally, itis necessaryforconnecting with the unitST-
HDA710. / Whenoperating the unitSE-HDA710, be sure to connectthe unitST-HDA710 by
connection cable.
1. Connect withtheTuner(ST-HDA710). (Asshownin Fig. 1 )
2. Connect theACmainsleadtoAmplifier(SE-HDA710). (Asshown
in Fig. 1 )
3. Connect thespeakerstospeakerterminal. (Asshownin Fig. 1 )
4. Turn on thepoweroftheAmplifier(SE-HDA710).
5. Press INPUTSELECTORtoselect theexternal source (EXT/MD) of
theAmplifier(SE-HDA710).
6. Inputasound signal toexternal inputterminal ofTuner(ST-
HDA710), and confirm tobeoutputtedfrom thespeaker. (Every
ranges of“High“, “Mid“ and “Low“.)
Fig. 1