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SRF-QT1

4-2. SCHEMATIC DIAGRAM

• Refer to page 6 for Note on Schematic Diagram and IC block diagrams.

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Summary of Contents for SRF-QT1

Page 1: ...5 mW at 10 harmonic distortion Power requirements 1 5 V DC one R03 size AAA battery Dimensions Approx 49 8 64 8 26 0 mm w h d 2 2 5 8 1 1 16 inches not incl projecting parts and controls Mass Approx 50 g 1 8 oz incl a battery and headphones Accessories supplied Stereo headphones 1 Carrying pouch 1 Design and specifications are subject to change without notice Ver 1 0 1999 12 ...

Page 2: ...GENERAL 1 GENERAL 2 2 DISASSEMBLY 2 1 Lid Battery Case 3 2 2 Cabinet Front Knob Tune 3 2 3 Main Board 4 3 ELECTRICAL ADJUSTMENT 5 4 DIAGRAMS 4 1 Printed Wiring Board Main Board 7 4 2 Schematic Diagram Main Board 9 5 EXPLODED VIEWS 11 6 ELECTRICAL PARTS LIST 12 2 ...

Page 3: ...OB TUNE Lid Battery Case Cabinet Front Knob Tune Main Board Set 2 Two screws B1 7 8 1 Slide Lid Battery Case in the direction of the arrow 6 Screw P1 7 2 5 claw two claws 7 Knob Tune claw 5 Knob Power 3 Release from the claw 4 Remove the Cabinet Front in the direction of the arrow 2 Release them from the two claws 1 Release from the claw 1 0 8 88 96 2 1 LID BATTERY CASE ...

Page 4: ... 4 2 3 MAIN BOARD 2 Remove the MAIN board in the direction of the arrow 1 Remove the leads at the two points of battery terminals by unsoldering Lead wire white Lead wire red ...

Page 5: ... Power voltage is dc 1 5 V and fed with regulated dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark FM Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Signal path F FM FM 2nd OSC Adjustment Procedure 1 Connect frequency counter to the position...

Page 6: ...g Board 7 8 MAIN BOARD SIDE A MAIN BOARD SIDE B DRY BATTERY SIZE AA IEC DESIGNATION R03 1PCS 1 5V S1 POWER ON OFF C8 L2 L6 TP9 L1 RV1 VOL CV1 Tuning 1 676 431 11 11 1 676 431 11 11 CT1 CV1 2 CV1 1 CT2 TP6 TP10 TP GND TP GND J1 10 6 5 1 1 15 16 30 TP8 1 2 A B C D E 3 4 5 6 7 8 ...

Page 7: ...SRF QT1 4 2 SCHEMATIC DIAGRAM Refer to page 6 for Note on Schematic Diagram and IC block diagrams 9 10 Tuning ...

Page 8: ... 01 TERMINAL BATTERY 4 3 041 671 01 KNOB POWER BLUE 4 3 041 671 11 KNOB POWER GREEN 4 3 041 671 21 KNOB POWER WHITE 4 3 041 671 31 KNOB POWER PINK 5 3 041 667 01 CABINET FRONT BLUE 5 3 041 667 11 CABINET FRONT GREEN 5 3 041 667 21 CABINET FRONT WHITE 5 3 041 667 31 CABINET FRONT PINK 6 3 041 669 01 PLATE TRANSPARENT 7 3 044 855 01 SHEET ADHESIVE 8 7 627 552 07 SCREW PRECISION P 1 7X2 5 9 3 041 672...

Page 9: ...IP 1uF 10V C33 1 164 156 11 CERAMIC CHIP 0 1uF 25V C34 1 164 156 11 CERAMIC CHIP 0 1uF 25V C35 1 126 206 11 ELECT CHIP 100uF 20 6 3V C36 1 126 206 11 ELECT CHIP 100uF 20 6 3V C37 1 126 246 11 ELECT CHIP 220uF 20 4V C38 1 164 156 11 CERAMIC CHIP 0 1uF 25V C39 1 162 927 11 CERAMIC CHIP 100PF 5 50V C40 1 162 927 11 CERAMIC CHIP 100PF 5 50V C41 1 124 778 00 ELECT CHIP 22uF 20 6 3V C43 1 164 357 11 CER...

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