Harman Kardon TU-940 Скачать руководство пользователя | Manualshive

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FM Tuned Indication Lighting Level Adjustment

Procedure:
1. Tune the set to 98MHz. Set FM SSG. output level to 20dBµ.
2. Adjust VR301 to the point that the “TUNED” indicator begins to illuminate.

FM Signal Level Adjustment

Procedure:
1. Tune the set to 98MHz.
2. Adjust VR401 and VR402 to light all RF Level Bars on the display.
• NORMAL: VR402
• NARROW: VR401

FM Stereo Separation Adjustment

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Содержание TU-940

Страница 1: ...AL PARTS LIST 24 IC FUNCTIONAL BLOCK DIAGRAM 32 PACKAGE 33 WIRING DIAGRAM 35 SCHEMATIC DIAGRAMS 36 harman kardon Parts and Service Office 80 Crossways Park West Woodbury N Y 11797 Printed in Korea LOC...

Страница 2: ...using Simpson Model 229 Leakage Tester standard equipment item no 21641 RCA model WT 540A or use alternate method as follows plug the power cord directly into a 230 volt AC receptacle do not use an is...

Страница 3: ...z 80 dB 65dB AM Suppression 60 dB 50 dB RDS Sensitivity 31 2 6 2 dBf 31 2 6 4 dBf Output Voltage Mono 5006100mV 5006150mV DIMENSIOS W H D 442 92 350 WEIGHT 3 9 Kg POWER SUPPLIES AC 230 V 5 Hz POWER CO...

Страница 4: ...display panel contains a large display for station frequency information and RDS data as well as status indicators for various tuner functions and 5 step RF level indicator bars 4 BAND Press to chang...

Страница 5: ...lower frequencies will be scanned The tuner will stop at the first station that has acceptable signal strength Turn the knob again in the same direction to tune to the next available station When TUN...

Страница 6: ...ations will be muted Press so that the MONO indicator is lit and all stations including all stereo transmissions will be heard in mono NOTE When experiencing weak or noisy reception of a stereo broadc...

Страница 7: ...7...

Страница 8: ...DISASSEMBLY PROCEDURES 8...

Страница 9: ...9...

Страница 10: ...10...

Страница 11: ...11...

Страница 12: ...12...

Страница 13: ...13 CIRCUIT DESCRIPTION 1...

Страница 14: ...14 2...

Страница 15: ...l 36 P37 N C Not used 37 P36 STEREO Input to light STEREO indicator At H it is active 38 P35 TUNED Input to detect station during tuning If L is inputed during tuning tuning stop at that frequency Whe...

Страница 16: ...Meter AC Voltmeter DC Voltmeter FM Standard Signal Generator FM SSG Frequency Counter Stereo Modulator Note Remove FM external antenna from terminal when aligning 2 Alignment and Test Points Refer to...

Страница 17: ...e 1 Tune the set to 98 MHz 2 Adjust L302 to obtain 0V between TP301 3 reading on the VOM NULL 3 Adjust L200 for a minimum reading on the distortion meter MONO Distortion 4 Repeat adjustments in step 2...

Страница 18: ...SSG output level to 20dB 2 Adjust VR301 to the point that the TUNED indicator begins to illuminate FM Signal Level Adjustment Procedure 1 Tune the set to 98MHz 2 Adjust VR401 and VR402 to light all RF...

Страница 19: ...ng L CH Stereo separation R CH Stereo separation IF BAND Switch NORMAL Adjust VR 201 NARROW Adjust VR 202 The separation of both channels should be equal AM SECTION AM VT Adjustment 1 Set to AM 522 kH...

Страница 20: ...epeat the above adjustments 1 2 and 3 AM TUNED Level Adjustment Procedure 1 Set AM SSG output level so that antenna input level of the set becomes 800 V 58 dB m 2 Adjustment VR 502 to the point that t...

Страница 21: ...21 EXPLODED VIEW...

Страница 22: ...22...

Страница 23: ...PRINTED CIRCUIT BOARD MAIN 23...

Страница 24: ...J 100V 8 9x13 T C221 CCCT J681K 0BB CAPACITOR CERAMIC 680PF K 50V B T C222 CCAT J101K AAB CAPACITOR CERAMIC 100PF K 50V B T C223 CEET J1R0M CI0 CAPACITOR E ALUMINUM 1 0uF M 50V 5x11 T C224 CEET J1R0M...

Страница 25: ...CEET JR47M CI0 CAPACITOR E ALUMINUM 0 47uF M 50V 5x11 T C602 CCCT J103Z 0DF CAPACITOR CERAMIC 0 01uF Z 50V F T C603 CEET F470M CI0 CAPACITOR E ALUMINUM 47uF M 25V 5x11 T C604 CCTT J330J 0DC CAPACITOR...

Страница 26: ...0 E20 COIL AM OSC AAO046 MW 7mm CAN L503 KIAA 00260 E20 COIL AM IFT AAA 026 7MC K502713N4 KR L504 KIAA 00270 E20 COIL AM IFT B AAA 027 L701 KI0T 4101K 003 COIL INDUCTOR 100uH K LA 40 T L 02 CW101 KNCW...

Страница 27: ...5 T R307 RCFT E221J 000 RESISTOR CARBON FILM 220ohm 1 5W 5 T R308 RCFT E471J 000 RESISTOR CARBON FILM 470ohm 1 5W 5 T R309 RCFT E102J 000 RESISTOR CARBON FILM 1Kohm 1 5W 5 T R310 RCFT E103J 000 RESIST...

Страница 28: ...223J 000 RESISTOR CARBON FILM 22Kohm 1 5W 5 T R518 RCFT E473J 000 RESISTOR CARBON FILM 47Kohm 1 5W 5 T R519 RCFT E104J 000 RESISTOR CARBON FILM 100Kohm 1 5W 5 T R520 RCFT E102J 000 RESISTOR CARBON FIL...

Страница 29: ...22C 472 RESISTOR SEMI FIXED RH063MCS3R 4 7Kohm VR401 VFEB A022C 103 RESISTOR SEMI FIXED RH063MC14R 10Kohm VR402 VFEB A022C 103 RESISTOR SEMI FIXED RH063MC14R 10Kohm VR501 VFEB A022C 104 RESISTOR SEMI...

Страница 30: ...M 270ohm 1 5W 5 T R937 RCFT E472J 000 RESISTOR CARBON FILM 4 7Kohm 1 5W 5 T R938 RCFT E473J 000 RESISTOR CARBON FILM 47Kohm 1 5W 5 T R939 RCFT E682J 000 RESISTOR CARBON FILM 6 8Kohm 1 5W 5 T R940 RCFT...

Страница 31: ...2V 50mA SW920 SWTA 00220 060 SWITCH TACT SKHV10910 A 12V 50mA SW921 SWTA 00220 060 SWITCH TACT SKHV10910 A 12V 50mA SW922 SWTA 00220 060 SWITCH TACT SKHV10910 A 12V 50mA SW923 SWTA 00220 060 SWITCH TA...

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