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Sony SRF-HM03V Service Manual

Tv / weather / fm stereo / am pll synthesized headphone radio
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SERVICE MANUAL
Ver 1.0 2004.04
Time display: 12-hour system
Frequency range:
Band
Range
TV
2 - 13 ch
WEATHER
1 - 7 ch
FM
87.5 - 108 MHz
AM
530 - 1 710 kHz
531 - 1 710 kHz
Headphone type: Dynamic
Power output: 7 mW + 7 mW (at 10 % harmonic distortion)
Power requirements: 1.5V DC, one size AAA (R03) battery
Mass: Approx. 156 g (5.6 oz) incl. a battery
Supplied accessories: Operating instructions
Design
and specifications are subject to change without notice.
Sony Corporation
9-877-737-01
2004D05-1
Personal Audio Company
© 2004.04
Published by Sony Engineering Corporation
SRF-HM03V
SPECIFICATIONS
Channel step
1 channel
1 channel
0.1 MHz
10 kHz
9 kHz
PLL SYNTHESIZED HEADPHONE RADIO
Battery Life (Approx. hours)
Sony alkaline size AAA (LR03) battery
Sony size AAA (R03) battery
* Measured by JEITA (Japan Electronics and Information Technology
Industries Association) standards.
The actual battery life may vary depending on the circumstance of the
unit.
TV/WEATHER/FM STEREO/AM
US Model
(JEITA*)
TV
WEATHER
FM
AM
33
33
37
57
14
14
16
26

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Summary of Contents for Sony SRF-HM03V

  • Page 1 Battery Life (Approx. hours) (JEITA*) Frequency range: WEATHER Band Range Channel step Sony alkaline size AAA (LR03) battery 2 - 13 ch 1 channel Sony size AAA (R03) battery WEATHER 1 - 7 ch 1 channel * Measured by JEITA (Japan Electronics and Information Technology 87.5 - 108 MHz...

  • Page 2: Table Of Contents

    SRF-HM03V TABLE OF CONTENTS Notes on chip component replacement • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be dam- GENERAL ..............3 aged by heat. DISASSEMBLY 2-1. Disassembly Flow ............4 2-2.

  • Page 3: General

    SRF-HM03V SECTION 1 This section is extracted from instruction manual. GENERAL (Left) POWER ON/OFF Battery compartment lid (Right) Light reflector (L) This reflector TUNE +* /— reflects car lights TV/WB/FM SENS at night for your DX/LOCAL safety. VOL* Light reflector (R)

  • Page 4: Disassembly

    SRF-HM03V SECTION 2 DISASSEMBLY • This set can be disassembled in the order shown below. 2-1. DISASSEMBLY FLOW 2-2. POWER BOARD 2-4. MICON BOARD, (Page 4) MAIN BOARD (Page 5) 2-3. CABLE SETTING 2-5. PUTTING THE (Page 5) SHEET (A) (Page 6) Note: Follow the disassembly procedure in the numerical order given.

  • Page 5: Cable Setting

    SRF-HM03V 2-3. CABLE SETTING Note: When installing the POWER board, set the cables as shown figure. slit slit slit slit slit POWER board 2-4. MICON BOARD, MAIN BOARD 5 claw 3 two screws (1.7) 6 cabinet assy front (R) qs MAIN board q;...

  • Page 6: Putting The Sheet (A)

    SRF-HM03V 2-5. PUTTING THE SHEET (A) sheet (A) MICON board leaf (UCOM), copper...

  • Page 7: Electrical Adjustments

    SRF-HM03V SECTION 3 ELECTRICAL ADJUSTMENTS 0 dB=1 µV AM VCO VOLTAGE ADJUSTMENT Adjustment Part Frequency Display Reading on Digital Voltmeter [AM] 1.30 ± 0.05 V 530 kHz Setting: 8.10 ± 1.00 V Confirmation 1710 kHz BAND: AM Put the lead-wire...

  • Page 8: Diagrams

    SRF-HM03V SECTION 4 DIAGRAMS 4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAM Note on Printed Wiring Boards: Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF • X : parts extracted from the component side.

  • Page 9: Schematic Diagram

    SRF-HM03V • 4-2. SCHEMATIC DIAGRAM • See page 12 for Waveforms. • See page 12 for IC Block Diagrams. See page 13 for IC Pin Function Description. R112 4.7k HEADPHONE Q6,7 (R-CH) 220k 1000p AM BAND R113 SWITCHING 100k 100k 100p 4.7k...

  • Page 10: Printed Wiring Boards - Main/Power Boards

    SRF-HM03V 4-3. PRINTED WIRING BOARDS – MAIN/POWER Boards – AM FERRITE-ROD ANTENNA MAIN BOARD (COMPONENT SIDE) R113 HEADPHONE (R-CH) MICON BOARD CN301 (Page 11) 1-861-919- (11) FM/TV/WEATHER POWER BOARD LEAD-WIRE ANTENNA HEADPHONE DRY BATTERY (L-CH) SIZE "AAA" (IEC DESIGNATION R03) 1PC.

  • Page 11: Printed Wiring Board - Micon Board

    SRF-HM03V 4-4. PRINTED WIRING BOARD – MICON Board – MICON BOARD (COMPONENT SIDE) LCD301 LIQUID CRYTAL DISPLAY S303 S305 S301 MODE ENTER C319 C320 R329 TUNE R327 R328 IC301 R326 R325 R324 S302 – X301 R322 R323 R321 S306 S304...
  • Page 12 SRF-HM03V • Waveforms • IC Block Diagrams – MAIN Board – – MICON Board – – MAIN Board – 1 Q201 (Collector) 3 IC301 tg (XOUT) IC1 TA2154FN-EL 0.4 Vp-p 1.8 Vp-p BUFFER FM/AM/TV PW SW 1/8 OR 1/16 LEVEL...
  • Page 13 SRF-HM03V • IC Pin Function Description MICON BOARD IC301 TC9329FA-112 (SYSTEM CONTROLLER) Pin No. Pin Name Description 1 to 4 COM1 to COM4 Common drive signal output to the liquid crystal display 5 to 15 S1 to S11 Segment drive signal output to the liquid crystal display...

  • Page 14: Exploded Views

    SRF-HM03V SECTION 5 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they may have some difference from the original are seldom required for routine service. Some one. delay should be anticipated when ordering •...

  • Page 15: Cabinet (R) Section

    SRF-HM03V 5-2. CABINET (R) SECTION board section (MICON board) board section (MAIN board) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4577-093-A EARPHONE (R) ASSY 3-241-280-01 SHEET (A) 3-254-136-11 SCREW (B1.4) 3-265-166-01 BELT, MAIN 3-265-179-01 RAIL (R)

  • Page 16: 5-3. Board Section

    SRF-HM03V 5-3. BOARD SECTION LCD301 MICON board BATT2 MAIN board not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 3-236-792-01 CASE (LCD) * 107 A-4547-258-A MAIN BOARD, COMPLETE 1-780-125-11 CONDUCTIVE BOARD, CONNECTION 3-254-135-11 SCREW (B1.4)

  • Page 17: Electrical Parts List

    SRF-HM03V SECTION 6 ELECTRICAL PARTS LIST POWER MAIN NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference number, please include the board. parts list may be different from the parts speci- are seldom required for routine service.
  • Page 18 SRF-HM03V MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C202 1-162-910-11 CERAMIC CHIP 0.25PF 50V < RESISTOR > C203 1-162-915-11 CERAMIC CHIP 10PF 0.5PF C204 1-164-156-11 CERAMIC CHIP 0.1uF 1-216-845-11 METAL CHIP 100K 1/10W 1-216-845-11 METAL CHIP...
  • Page 19 SRF-HM03V MICON Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4547-261-A MICON BOARD, COMPLETE < TRANSISTOR > ********************** Q301 8-729-037-92 TRANSISTOR 2SD2216J-R (TX).SO 1-780-125-11 CONDUCTIVE BOARD, CONNECTION Q302 8-729-037-92 TRANSISTOR 2SD2216J-R (TX).SO 3-236-792-01 CASE (LCD) Q303...
  • Page 20 SRF-HM03V REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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