Teac T-R670 Service Manual Download Page 8 | Manualshive

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KEY PCB

MAIN PCB

TRANSFORMER PCB

SELECT SW PCB

4 PC BOARDS AND PARTS LIST

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Summary of Contents for T-R670

Page 1: ...S PC boards shown are viewed from parts side The parts with no reference number or no parts number in the exploded views are not supplied As regards the resistors and capacitors refer to the circuit diagrams contained in this manual Parts marked with this sign are safety critical components They must be replaced with identical components refer to the appropriate parts list and ensure exact replace...

Page 2: ...gnal to Noise Ratio 45 dB at 85 dB m General Power Requirements 120 230 V AC 50 60 Hz Power Consumption 8 W Dimensions W x H x D 435 x 102 x 270 mm Weight net 3 6kg Standard Accessories AM Loop Antenna x 1 FM T type Antenna x 1 Matching Transformer x 1 Remote Control Unit RC 789 x 1 Improvements may result in specifications and features changing without notice Voltage Conversion General export mod...

Page 3: ...dulator Frequency counter Distortion analyser IMPORTANT 1 Check power source voltage 2 Set the function switch to band aligned 3 Keep the signal input as low as possible to adjust accurately 4 Modulation and modulation frequency Item Modulation Modulation frequency Band AM 30 400Hz FM 100 75KHz Dev 400Hz ADJUSTMENT POINT MAIN PCB T2 T3 2 T4 T5 TVR5 TVR4 TVR2 TVR1 TVR3 T1 TVC1 TVC2 TP1 L2 RF1 P5 P6...

Page 4: ...e AM ANT Coil through the loop antenna Adjust for the indication of VTVM of the wave form of scope to be maximum BAND Step Frequency Adjust for Adjustment 1 630KHz Maximum sensitivity L2 T2 2 1420KHz Maximum sensitivity TVC2 3 Repeat steps 1 and 2 several times AM NO Frequency Adjust for Adjustment 1 97 8MHz L rejection T4 2 P5 GND 3 97 8MHz 97 8MHz TVR3 T5 L R rejection R rejection 3 FM 19kHz REJ...

Page 5: ...T3 2 3 5 FM AM AUTO STOP LEVEL ADJUSTMENT FM SIGNAL GENERATOR Connect to FM ANT Jack FM IN through the dummy AM SIGNAL GENERATOR Connect to AM ANT Coil through the Loop antenna BAND STEP SIGNAL GENERATOR Adjust for Adjustment 1 97 8MHz 16dB Display ON TVR1 1 630KHz 74dB Display ON TVR2 AM FM TUNED TUNED 4 Repeat steps 1 and 2 Several times 97 8MHz Minimum T H D T1 TP1 TP1 NO Frequency Adjust for A...

Page 6: ... 6 2 4 5 6 12 13 17 16 15 14 21 20 19 18 23 22 3 7 8 9 10 11 1 3 EXPLODED VIEWS AND PARTS LIST ...

Page 7: ...200000 15 9A09231700 BRACKER U TYPE 78C206000000 16 9A09233500 TRANSFORMER PCB ASSY TR670B3852 17 9A09230100 UPPER COVER 78C266300000 18 9A09233300 MAIN PCB ASSY TR670B3850 19 9A09233600 SELECT SW PCB ASSY TR670B3853 20 9A09231500 BUSHING 98BSB4F4 21 9A09231400 AC CORD 651B2U56B24P 22 9A09231300 HOLER ANT 85A271 23 9A09229900 REAR PLATE 78C2661W0245 F1 F2 9A09231900 FUSE 0 5A 250V T 265200P521TQ F...

Page 8: ... 8 KEY PCB MAIN PCB TRANSFORMER PCB SELECT SW PCB 4 PC BOARDS AND PARTS LIST ...

Page 9: ... TYPE 10K TVR3 9A09241000 TVR 6 H TYPE 30K TVR4 TVR5 9A09241100 TVR 6 H TYPE 1M U1 9A09241900 IC AN278 U2 9A09242000 IC LA1266 U3 9A09242100 IC LA3450 U4 9A09242200 IC TC9257P U5 U7 9A09242300 IC AN7805 MAIN PCB ASSY REF NO PARTS NO DESCRIPTION U8 9A09242400 IC AN7812 U8 9A09244300 HEAT SINK VD1 VD2 9A09243600 VARICAP 1SV149 X1 9A09243700 CRYSTAL 7 2MHZ Z1 9A09243800 CERAMIC FILTER SFZ10 7MS2 Z2 9...

Page 10: ...ELECT SW PCB AM FM Stereo Tuner T T R R6 67 70 0 1 st Issue October 2001 INSTRUCTIONS FOR SERVICE PERSONNEL BEFORE RETURNING APPLIANCE TO THE CUSTOMER MAKE LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT ...

Page 11: ...8 6 7 4 5 2 3 1 E D C B A SCHEMATIC DIAGRAM T R670 KEY PCB AM FM Stereo Tuner T T R R6 67 70 0 1 st Issue October 2001 ...

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