Panasonic RC-7290E Bedienungsanleitung

ORDERNO. AD0304088C8

Clock Radio

RC-7290E / RC-7290EB/ RC-7290EJ/ RC-7290GN

Colour

(S)............SilverType

SPECIFICATIONS

Specification

Radio frequencyrange:

FM; 87.50-108.00 MHz

AM; 520-1610 kHz

Intermediatefrequency:

FM; 10.7MHz

AM; 459.0kHz

Sensitivity:

FM; 5.62 V/50mW output(-3dB

limitsens.)

AM; 100 V/m/50mW output(Max

sens.)

Powerrequirement:

AC; 230 V, 50 Hz/ Power

consumption;6W

Battery; 9V(one6F22/6LR61, 006P

battery)

Poweroutput: 250 mW+250 mW (RMS...max.)

Speaker; 4cm

Dimensions(W×H×D): 215×64×149 mm

Mass (withoutbattery): 804g

Note:/ Specificationsaresubjectto changewithoutnotice. / Mass

and dimensionsareapproximate.

[Powerconsumption in standbymode:1.8W]

1. Caution forACMains Lead

2. Operation Checks and Component Replacement

Procedures

-Thissection describes procedures forchecking theoperation of

themajorprintedcircuitboardsand replacing themain

components.

-Forreassemblyafteroperation checks orreplacement, reverse the

respectiveprocedures. Special reassemblyprocedures are

describedonlywhenrequired.

2.1. Checking forthemainP.C.B. ass’y

2.2. ReplacementforthemainP.C.B.

-Follow the(Step1)-(Step5) ofitem2.1.

2.3. Replacementforthespeakers.

-Follow the(Step1)-(Step3) ofitem2.1.

3. SchematicDiagram

3.1. SchematicDiagramNotes

S1:

BRIGHTNESS HIGH/LOWselect switchin“HIGH”position.

S2:

DOZEswitch.

S3:

SLEEP switch.

S4:

TIMESETOFF switch.

S5:

RADIO switch.

S6:

AL1switch.

S7:

AL2switch.

S8:

FWDswitch.

S9:

REV switch.

S10:

FASTswitch.

S11:

BAND switchin“AM”position.

AL1:

ALARM1RADIO/OFF select switchin“RADIO”position.

AL2:

ALARM2BUZZER/OFF select switchin“BUZZER”position.

VR1:

Batteryback-up VR.

VR2-1, VR2-2:

Volumecontrol VR.

-DC voltagemeasurements aretakenwithelectronics voltmeter. The

negativeterminal ofthebatteryprovides negativemeter

connection point.

Nomark.........

().....................

-Batterycurrent:

Vol. min................

FM: 16mA

AM: 16mA

Vol. max...............

FM: 37mA

AM: 30mA

Measurementinstruction

AM:

74dB/m, 30%Mod.

FM:

60dB, 30%Mod.

-Importantsafetynotice

Components identifiedbymarkhavespecial characteristics

importanforsafety. / Whenreplacing anyofthese components,

use onlymanufacturer’sspecifiedparts.

-Thisshematicdiagrammaybemodifiedat anytimewiththe

developmentofnew technology.

3.2. SchematicDiagram

4. Printed Circuit BoardDiagram

5. Type Illustration of IC’s, Transistorsand Diodes

6. Measurement and Adjustment

6.1. ALIGNMENTINSTRUCTIONS

READCAREFULLYBEFORE ATTEMPTINGALIGNMENT

1. Setpowersource voltageto 230V/50HzAC.

2. Setvolumecontrol to maximum.

3. Setband switchto AMorFM.

4. Output of signal generatorshouldbeno higherthannecessaryto obtainanoutput reading.

-AM-IFALIGNMENT

Signal Generator or Sweep

Generator RadioDial Setting Indicator

(Electronic

Voltmeteror

oscilloscope)

Adjustment

(Shownin Fig.1 )

Remarks

Connections Frequency

Fashion aloop of

several turnsof

wireand radiate

signal intoloop of

receiver.

459 kHz30%

Mod. at400 Hz Pointofnon-

interference. (on/

about600 kHz)

Connectvert.

amp. ofscopeto

testpointTP3.

Negative sideto

testpointTP4.

T3(AMIFT)

Adjust

maximum

output.

-AM-RFALIGNMENT

Dieses Handbuch passt für folgende Modelle

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