Technics SA-EH790E Manual de usuario

ORDERNO.AD0303004C2

Tuner/Amplifier

SA-EH790E / SA-EH790EB / SA-EH790EG / SA-EH790EP

Colour

(S)...................Silver Type

System: SC-EH790

Because of unique interconnecting cables, when a

compact requires service, send or bring inthe entire

system.

SPECIFICATIONS

Specification

Amplifier section

Power output (L/R bothchannel driven)

StereoMode

DIN 1kHz THD 1%/6 (High) 2×25 W

100 Hz THD 1%/8 (Low) 2×45 W

RMS 1kHz THD 10%/6 (High) 2×35 W

100 Hz THD 10%/8 (Low) 2×65 W

PRO LOGIC mode

DIN FRONT

1kHz THD 1%/6 (High) 2×25 W

100 Hz THD 1%/8 (Low) 2×45 W

SURROUND 1kHz THD 1%/8 2×30 W

CENTER 1kHz THD 1%/8 60 W

RMS FRONT

1kHz THD 10%/6 (High) 2×35 W

100 Hz THD 10%/8 (Low) 2×65 W

SURROUND 1kHz THD 10%/8 2×40 W

CENTER 1kHz THD 10%/8 80 W

PMPO 1kHz/High 6 , Low8 ,

CENT. 8 , SURR. 8 3000 W

Total harmonic

distortion

Ratedpower at 1kHz 1%(6 )

Half power at 1kHz 0.1%(6 )

Loadimpedance

FRONT(High) 6

FRONT(Low) 8

SURROUND 8

CENTER 8

DIGITALS. WOOFER

Center frequency 60 Hz

LEVEL(VOL-20 db) MID +3db

MAX +6db

FM tuner section

Frequencyrange 87.50—108.00 MHz

(0.05 MHz steps)

Sensitivity 1.8V (IHFusable)

S/N 26 db 1.5V

S/N

MONO 70 db (75 db, IHF)

Antennaterminal(s) 75 (unbalanced)

AM tuner section

Frequencyrange 522—1629 kHz (9kHz steps)

520—1630 (10 kHz steps)

Sensitivity(S/N 20 db) 500 V/m

Timer section

Clock Quartz-lock type

Function Playtimer (1time, daily),

Rec timer (1time, daily)

Sleep(120 min, 30 min

intervals)

Setting intervals(Play/Rec) 1 minute—23 hours 59 minutes

(1minintervals)

General

Power supply

(For(E) ,(EG),(EP)areas) AC 230V 50Hz

(For(EB) area) AC 230—240V 50Hz

Power consumption 190 W

Standby 0.5W

Dimensions(W×H×D) 293×118.5×345 mm

Mass 5.2kg

Nots 1.Design and specificationsare subject to

changewithout notice.

2.Dimensionsand mass are approximate.

3.Total harmonicdistortion ismeasuredbythe

digital spectrumanalyzer.

System/SC-EH790

Sound processor: SH-EH790, CD changer: SL-

EH790, Tuner/ Amplifier: SA-EH790 , Cassette

Deck: RS-DV290, Speakers: Front*(SB-DV290),

Center* (SB-PC95),Surround*(SB-PS95)(*Made

inMAES.)

Unauthorized copying and distribution isaviolation of law.

1. Before Repairs

1. Turn off the power supply. Using a10 , 10 Wresistor, connect

both ends of power supplycapacitors (C701, C703 and C702,

C704) inorder to discharge the voltage.

2. Before turning the power supplyon, after completion of repair,

slowlyapplythe primaryvoltage byusing apower supplyvoltage

controller to make sure that the consumed current at 50 HzinNO

SIGNALmode shouldbe shownbelow with respecttosupply

voltage 230/240 V.

Powersupply

voltage AC 230 V AC 240 V

Consumedcurrent

50 Hz 100 - 350 mA

2. Protection Circuitry

The protection circuitrymayhave operatedif eitherof the following conditions is noticed:

-Nosound isheard when the power isswitched ON.

-Sound stops during aperformance.

The functions of this circuitryis toprevent circuitrydamage if, forexample, the positive and

negative speakerconnection wires are shorted, orif speakersystems withanimpedance less

thanthe indicatedratedimpedance of this unit are used.

If this occurs, followthe procedures outlinedbelow.

1. Switch OFF the power.

2. Determine the cause of the problem and correct it.

3. Switch ONthe power once again.

Note:

Whenthe protection circuitryfunctions, the unit will not operate unless the poweris first

switchedOFF and thenON again.

3. Accessories

-AC mains lead for (E),(EG)and (EP) areas

(RJA0019-2X)....................1pc.

-AC mains lead for (EB)area

(RJA0053-3X)....................1pc.

-Remote control

(EUR7702270)....................1pc.

-Remote control batteries

(R6/LR6,”AA”,UM-3)....................1pc.

Note: These are available on sales route.

-FM indoor antenna

(RSA0007)....................1pc.

-AMloop antenna set

(RSA0022-L)....................1pc.

-Speaker leads

(REE1234-1)....................2pc.

(Red/Black)

(REE1233-1)....................2pc.

(Gray/Blue)

-Antenna plug adaptor for (EB)area

(SJP9009)....................1pc.

4. Caution for AC Mains Lead

5. Location of Controls

6. Operation Checks and Component Replacement /

Procedures

-Thissection describes procedures for checking the operation of

the major printed circuitboards and replacing the main

components.

-For reassemblyafter operation checks or replacement, reverse the

respective procedures. Special reassemblyprocedures are

described onlywhen required.

6.1. Checking for the AC INP.C.B.

-Check the AC INP.C.B. as shownbelow.

6.2. Checking for the operation P.C.B.

-Follow the (Step 1) -(Step 3) of item 6.1.

-Check the operation P.C.B. as shownbelow.

6.3. Checking for the mainP.C.B.

-Follow the (Step 1) -(Step 3) of item 6.1.

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