background image

SRF-H3

Australian Model

SERVICE MANUAL

FM STEREO/AM HEADPHONE RADIO

SPECIFICATIONS

Frequency range:

FM:

 87.6 – 108 MHz

AM:

 530 – 1 710 kHz

Power output:

5.0 mW + 5.0 mW (at 10 % harmonic
distortion)

Headphone type:

Dynamic

Power requirements:

1.5 V DC, one size AAA (R03) battery

Mass:

Approx. 132 g (4.7 oz) incl. a battery

Design and specifications are subject to change
without notice.

Ver 1.0  2000. 07

Summary of Contents for Walkman SRF-H3

Page 1: ...ncy range FM 87 6 108 MHz AM 530 1 710 kHz Power output 5 0 mW 5 0 mW at 10 harmonic distortion Headphone type Dynamic Power requirements 1 5 V DC one size AAA R03 battery Mass Approx 132 g 4 7 oz incl a battery Design and specifications are subject to change without notice Ver 1 0 2000 07 ...

Page 2: ...eception is too strong Under normal condition set it to DX 3 Turn TUNE tuning to tune in a station 4 Adjust the volume using VOL To turn off the radio Set POWER to OFF AAA R03 x 1 Head band Light reflector FM flexible antenna BAND SENS VOL Driver units POWER Support band Insert the side of the battery first Battery compartment Dial scale A TUNE B This section is extracted from instruction manual 1...

Page 3: ... 2 Push this portion down Cabinet rear R assy 1 Unsolder two lead wires Model name SRF H3 Gear tuning 1 Turn CV1 fully in the direction of arrow Cabinet rear R assy CV1 2 2 1 CABINET FRONT R ASSY 2 2 HOLDER WITH DRIVER 2 3 GEAR TUNING INSTALLATION Note Follow the disassembly procedure in the numerical order given ...

Page 4: ... trimmer capacitors FM IF ADJUSTMENT Adjust for a maximum reading on level meter T2 10 7 MHz FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L4 87 35 MHz CT1 3 108 05 MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L3 87 35 MHz CT1 2 108 05 MHz FM Setting BAND switch FM AM Setting BAND switch AM signal AM RF signal generator 30 amplitude modulati...

Page 5: ...BPF FM RF IN FM RF IN AM IF IN FM RF OUT 1 FM OSC 3 AM OSC 4 L2 FERRITE ROD ANTTENA L5 BUFFER Q1 CT1 1 CV1 1 CV1 TUNE 13 5 14 AM RF IN AM MIX OUT FM MIX OUT FM MIX AM MIX AM OSC FM OSC CF1 12 T1 CF2 7 8 5 13 16 15 2 AM AGC FM DET VCO R CH R CH RV2 38k 19k 90º 19k 0º AM DET AF OUT VCC1 R OUT L OUT 9 RV1 VCO L3 CT1 2 B R16 B R16 B R16 B R16 CV1 2 FM AM FRONT END IC1 1 3 STEREO MPX IC2 SP1 SPEAKER SP...

Page 6: ...SRF H3 7 8 4 2 SCHEMATIC DIAGRAM 16 ...

Page 7: ...SRF H3 9 10 4 3 PRINTED WIRING BOARD Ref No Location D1 F 3 IC1 E 9 IC2 E 3 IC3 C 2 Q1 D 10 Semiconductor Location ...

Page 8: ... CAP VARIABLE IC IC1 8 759 230 65 IC TA7792F COIL L1 1 414 142 61 INDUCTOR 1uH L2 1 402 505 11 ANTENNA FERRITE ROD MW L3 1 428 123 11 COIL AIR CORE L4 1 428 122 11 COIL AIR CORE L5 1 406 390 21 COIL OSC AUDIO TUNER Ref No Part No Description Remarks Ref No Part No Description Remarks SECTION 6 ELECTRICAL PARTS LIST NOTE Due to standardization replacements in the parts list may be different from th...

Page 9: ... 10K 5 1 10W R15 1 216 295 00 SHORT 0 R16 1 216 009 00 RES CHIP 22 5 1 10W R17 1 216 061 00 METAL CHIP 3 3K 5 1 10W R18 1 216 049 11 RES CHIP 1K 5 1 10W R19 1 216 025 11 RES CHIP 100 5 1 10W R21 1 216 049 11 RES CHIP 1K 5 1 10W SWITCH S1 1 554 667 00 SWITCH SLIDE SENS S2 1 553 510 11 SWITCH SLIDE BAND TRANSFORMER T1 1 404 920 21 TRANSFORMER IF T2 1 404 921 21 TRANSFORMER DISCRIMINATOR MISCELLANEOU...

Page 10: ...SRF H3 14 Sony Corporation Audio Entertainment Group 2000G16024 1 Printed in Japan 2000 7 Published by PE General Engineering Dept 9 927 940 31 ...

Reviews: