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Ref. No.

PART NO.

DESCRIPTION

CAPACITORS

C413

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C414

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C415

CCAT-J473Z-AAF

CAPACITOR CERAMIC

0.047uF Z 50V  F   T

C416

CFMT-N473J-GK0

CAPACITOR F/POLYESTR

0.047uF  J 100V 8.9x13.  T

C417

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C418

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C419

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C420

CEET-F470M-CI0

CAPACITOR E/ALUMINUM

47uF    M  25V 5x11      T

C421

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C422

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C423

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C501

CFST-O471J-CJ0

CAPACITOR F/STYROL

470PF  J 125V 5.5x12    T

C502

CCTT-J180J-0BC

CAPACITOR CERAMIC

18PF    J 50V  CH T

C503

CCCT-J473Z-0JF

CAPACITOR CERAMIC

0.047uF Z 50V  F T

C504

CCCT-J473Z-0JF

CAPACITOR CERAMIC

0.047uF Z 50V  F T

C505

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C506

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C507

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C508

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C510

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C511

CEET-E101M-DI0

CAPACITOR E/ALUMINUM

100uF   M  16V 6.3x11    T

C512

CEET-E101M-DI0

CAPACITOR E/ALUMINUM

100uF   M  16V 6.3x11    T

C513

CCTT-J470J-0DC

CAPACITOR CERAMIC

47PF    J 50V  CH T

C514

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C515

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C516

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C517

CCCT-J102K-0BB

CAPACITOR CERAMIC

1000PF  K 50V  B T

C518

CEET-JR47M-CI0

CAPACITOR E/ALUMINUM

0.47uF  M  50V 5x11      T

C519

CEET-J4R7M-CI0

CAPACITOR E/ALUMINUM

4.7uF   M  50V 5x11      T

C520

CEET-J2R2M-CI0

CAPACITOR E/ALUMINUM

2.2uF   M  50V 5x11      T

C521

CCCT-J473Z-0JF

CAPACITOR CERAMIC

0.047uF Z 50V  F T

C522

CEET-JR47M-CI0

CAPACITOR E/ALUMINUM

0.47uF  M  50V 5x11      T

C523

CFMT-N103J-DE0

CAPACITOR F/POLYESTR

0.01uF   J 100V 6x7      T

C524

CFMT-N272J-DJ0

CAPACITOR F/POLYESTR

0.0027uF J 100V 5.7x12   T

C528

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C529

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C530

CFMT-N273J-FK0

CAPACITOR F/POLYESTR

0.027uF  J 100V 7.8x13   T

C601

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 CERAMIC

33PF    J 50V  CH T

C605

CCTT-J390J-0DC

CAPACITOR CERAMIC

39PF    J 50V  CH T

C606

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C607

CCAT-F103Z-AAF

CAPACITOR CERAMIC

0.01uF  Z 25V  F   T

C608

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C609

CCAT-F223Z-AAF

CAPACITOR CERAMIC

0.022uF Z 25V  F   T

C610

CEET-F470M-CI0

CAPACITOR E/ALUMINUM

47uF    M  25V 5x11      T

C611

CCCT-J223Z-0FF

CAPACITOR CERAMIC

0.022uF Z 50V  F T

C612

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C613

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C614

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C615

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C616

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C701

CCTT-J271J-0FZ

CAPACITOR CERAMIC

270PF   J 50V  SL T

C702

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C703

CCAT-J101K-AAB

CAPACITOR CERAMIC

100PF   K 50V  B   T

C704

CEET-G100M-CI0

CAPACITOR E/ALUMINUM

10uF    M  35V 5x11      T

C706

CEET-F470M-CI0

CAPACITOR E/ALUMINUM

47uF    M  25V 5x11      T

C707

CCCT-J104Z-0FF

CAPACITOR CERAMIC

0.1uF   Z 50V  F T

C708

CCTT-J100D-0BC

CAPACITOR CERAMIC

10PF    D 50V  CH T

C709

CCTT-J100D-0BC

CAPACITOR CERAMIC

10PF    D 50V  CH T

C710

CEET-F470M-CI0

CAPACITOR E/ALUMINUM

47uF    M  25V 5x11      T

CT501

VCTC-00022-200

TRIMMER

CVCN06C200

CT502

VCTC-00022-200

TRIMMER

CVCN06C200

DIODES

VD501

DDSV-00120-S10

DIODE-VVC

SVC321SPA-C2 AM8V DO40S

VD502

DDSV-00120-S10

DIODE-VVC

SVC321SPA-C2 AM8V DO40S

D101

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D102

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D103

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D104

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D105

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D106

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D107

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D201

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D302

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D303

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D401

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D402

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D403

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

D404

DDTS-00070-SO0

DIODE-SI

1SS133 (40V 0.11A) DO-40 T

25

Summary of Contents for TU-940

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 7: ...7...

Page 8: ...DISASSEMBLY PROCEDURES 8...

Page 9: ...9...

Page 10: ...10...

Page 11: ...11...

Page 12: ...12...

Page 13: ...13 CIRCUIT DESCRIPTION 1...

Page 14: ...14 2...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 21: ...21 EXPLODED VIEW...

Page 22: ...22...

Page 23: ...PRINTED CIRCUIT BOARD MAIN 23...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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