background image

Ref. No.

PART NO.

DESCRIPTION

DIODES

D405

DDTS-00070-SO0

DIODE-SI

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

D406

DDTS-00070-SO0

DIODE-SI

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

D407

DDTS-00070-SO0

DIODE-SI

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

D408

DDTS-00070-SO0

DIODE-SI

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

D409

DDTR-00040-T10

DIODE-RECTIFIER

1N4004S(400V 1A  0.6mm) T

D410

DDTS-00070-SO0

DIODE-SI

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

D501

DDTS-00070-SO0

DIODE-SI

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

D502

DDTS-00070-SO0

DIODE-SI

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

D503

DDTS-00070-SO0

DIODE-SI

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

ZD101

DDTZ-G056B-SOS

DIODE ZENER

MTZJ5.6B 5.45-5.73  DO34 T

ZD102

DDTZ-G330C-SO0

DIODE ZENER

MTZ33C 30.90-32.50  DO40 T

ZD201

DDTZ-G051B-SOS

DIODE ZENER

MTZJ5.1B 4.94-5.20  DO34 T

RELAY

RL401

ESRY-00350-121

RELAY

V23105-A5003-A201

FUSE

FGFB-S1001-137

FUSE GLASS

100mA 250V FST0034.3107  T

INTEGRATED CIRCUITS

IC101

ICRG-00218-SE0

IC REGULATOR

KA7812   12V  3A   TO-220

IC102

ICRG-00043-SE0

IC REGULATOR

KA7805      5V 3mm TO-220

IC201

ICLN-03610-S10

IC PLL FM MPX

LA3401 DIP22

IC202

ICPC-00010-TB0

IC PHOTOCOUPLER

LTV817B DIP4

IC203

ICOP-00131-SE0

IC DUAL OP AMP

KA4558C DIP8

IC301

ICLN-00180-S10

IC FM IF

LA1235 DIP16

IC401

ICLN-00180-S10

IC FM IF

LA1235 DIP16

IC501

ICLN-00160-S10

IC AM TUNER

LA1245 DIP20S

IC601

ICLN-03680-S10

IC PLL

LC7218JM SOP-24

IC701

ICLN-03630-SR0

IC RDS DEMODULATOR

TDA7479D SOP16

COILS

L101

KI0T-42R2K-003

COIL-INDUCTOR

2.2uH M LA 50 T L 02

L201

KIML-A0010-E20

COIL-FM MPX FILTER

AMA001 19KHz 10mm-CAN

L202

KIML-A0010-E20

COIL-FM MPX FILTER

AMA001 19KHz 10mm-CAN

L301

IFFD-00100-E20

IFT-FM DET

AFD010  7mm-CAN

L302

IFFA-00110-E20

IFT-FM

AFA011  7mm-CAN

L303

KIFK-00080-E20

COIL-FM CHOKE

AFK016 A187LY-K5006 20.8mH

L304

KI0T-42R2K-003

COIL-INDUCTOR

2.2uH M LA 50 T L 02

L501

KIAT-00540-E20

COIL-AM ANT

AAT-054

L502

KIAO-00460-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-00140-6TM

CONNECTOR-WAFER

5267-06A 2.5mm MILK

CW102

KNCW-00990-2T9

CONNECTOR-WAFER

JE202A-1T-02

CW103

KNCW-00990-2T9

CONNECTOR-WAFER

JE202A-1T-02

CW601

KNCW-00760-IT0

CONNECTOR-WAFER

8370-181 1.25mm TOP 18P

TP301

KNCW-01490-2T9

CONNECTOR-WAFER

JE115-AT-02P

TP401

KNCW-01490-2T9

CONNECTOR-WAFER

JE115-AT-02P

TP501

KNCW-01490-2T9

CONNECTOR-WAFER

JE115-AT-02P

RESONATORS

X601

KTAL-00041-072

CRYSTAL

HC-49/U 7.200000MHz

X701

KTAL-00321-433

CRYSTAL

HC-49/U 4.332MHz

CF201

KTRE-00300-288

RESONATOR

ZTB456F11

PCB

PCB1

PCST-05070-11B

PCB-SINGLE

A1T-507 330x197x1.6t

RESISTORS

R101

RCFT-E102J-000

RESISTOR-CARBON FILM

1Kohm   1/5W 5% T

R102

RCFT-E473J-000

RESISTOR-CARBON FILM

47Kohm  1/5W 5% T

R106

RCFT-F101J-010

RESISTOR-CARBON FILM

100ohm  1/4W 5% T

R107

RCFT-F101J-010

RESISTOR-CARBON FILM

100ohm  1/4W 5% T

R108

RCFT-E473J-000

RESISTOR-CARBON FILM

47Kohm  1/5W 5% T

R109

RCFT-E1R0J-000

RESISTOR-CARBON FILM

1ohm    1/5W 5% T

R110

RCFT-E1R0J-000

RESISTOR-CARBON FILM

1ohm    1/5W 5% T

R111

RMOE-H121J-020

RESISTOR-METAL OXIDE

1W ERG(X)1SJ121E 120ohm T

R112

RMOR-G1R2J-0C0

RESISTOR-METAL OXIDE

ERX-12SJ1R2E 5% 1.2ohm

R113

RMOR-G1R2J-0C0

RESISTOR-METAL OXIDE

ERX-12SJ1R2E 5% 1.2ohm

R114

RMOR-H100J-0C0

RESISTOR-METAL OXIDE

10ohm 1W 5% ERG(X)1SJ100E

R115

RMOH-H330J-100

RESISTOR-METAL OXIDE

PR01 1W 33ohm 5% R-SHAPE T

R116

RMOH-H330J-100

RESISTOR-METAL OXIDE

PR01 1W 33ohm 5% R-SHAPE T

R117

RCFT-E184J-000

RESISTOR-CARBON FILM

180Kohm 1/5W 5% T

R118

RCFT-E184J-000

RESISTOR-CARBON FILM

180Kohm 1/5W 5% T

R201

RCFT-E103J-000

RESISTOR-CARBON FILM

10Kohm  1/5W 5% T

R202

RCFT-E103J-000

RESISTOR-CARBON FILM

10Kohm  1/5W 5% T

R203

RCFT-E332J-000

RESISTOR-CARBON FILM

3.3Kohm 1/5W 5% T

R204

RCFT-E101J-000

RESISTOR-CARBON FILM

100ohm  1/5W 5% T

R205

RCFT-E473J-000

RESISTOR-CARBON FILM

47Kohm  1/5W 5% T

26

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...

Page 32: ...32...

Page 33: ...33...

Page 34: ...34...

Page 35: ...35...

Page 36: ...36...

Page 37: ...37...

Reviews: