Sony ICF-C1200 Service Manual
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Sony ICF-C1200 Service Manual

Sony ICF-C1200 Service Manual

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See also: Operating Instructions
SERVICE MANUAL
Ver 1.0 2001.03
Sony Corporation
9-873-106-11
2001C0200-1
Audio Entertainment Group
© 2001.3
General Engineering Dept.
ICF-C1200
SPECIFICATIONS
US Model
AEP Model
E Model
Tourist Model
FM STEREO/AM PLL
SYNTHESIZED RADIO

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Summary of Contents for Sony ICF-C1200

  • Page 1 ICF-C1200 SERVICE MANUAL US Model AEP Model Ver 1.0 2001.03 E Model Tourist Model SPECIFICATIONS FM STEREO/AM PLL SYNTHESIZED RADIO Sony Corporation 9-873-106-11 2001C0200-1 Audio Entertainment Group © 2001.3 General Engineering Dept.

  • Page 2: Table Of Contents

    ICF-C1200 TABLE OF CONTENTS Specifications ................1 Notes on chip component replacement • Never reuse a disconnected chip component. 1. GENERAL • Notice that the minus side of a tantalum capacitor may be ..............2 damaged by heat. 2. DISASSEMBLY 2-1.

  • Page 3: Disassembly

    ICF-C1200 SECTION 2 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 2-1. MAIN BOARD 2 Screws (1.4X6 tapping) 5 Claw ANT101 Cabinet (rear) ASSY 4 Screws (1.4) 5 Claw 5 Claw S301 • Caution during assembly Align the hold switch(S301) to the knob(HOLD).

  • Page 4: Electrical Adjustments

    ICF-C1200 SECTION 3 ELECTRICAL ADJUSTMENTS FM FREQUENCY COVERAGE CONFIRMATION 3-1.TUNER SECTION Adjust part Frequency display reading on digital voltmeter AM Section 0dB=1µV Confirmation 87.5MHz 3.0 to 4.0V Confirmation 108MHz 9.5 to 10.5V BAND button : AM Volume : MIN FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter.
  • Page 5 ICF-C1200 VCO Adjustment Procedure : FM RF signal telescopic generator antenna terminal µ 0.01 F Carrier frequency : 98MHz Modulation : No modulation Output level : 1.38mV (–55dB) 1. Connect the frequency counter to TP (76k) and TP (3V) as shown the figure below.

  • Page 6: Diagrams

    ICF-C1200 SECTION 4 DIAGRAMS 4-1. EXPLANATION OF IC TERMINALS • IC301 TC9328AF-SR7491 (System control, LCD driver) Pin No. Pin name Description COM1-4 LCD common output. 5-26 S1-S22 LCD segment output. HOLD SW HOLD switch input. ON:L OFF:H 28-30 KR1-3 Key return input.

  • Page 7: Block Diagram

    ICF-C1200 4-2. BLOCK DIAGRAMS • Signal path. : Analog : Digital • Abbreviation : Tourist...

  • Page 8: Printed Wiring Boards - Main Section (1/2) (Side A)

    ICF-C1200 4-3. PRINTED WIRING BOARDS – MAIN SECTION (1/2) (SIDE A) – : Uses unleaded solder. SP101 Semiconductor SPEAKER Location MAIN BOARD (SIDE A) Ref. No. Location D109 D303 S310 D304 BAND D401 /ENT D402 R405 L102 D403 R314 R315...

  • Page 9: Printed Wiring Boards - Main Section (2/2) (Side B)

    ICF-C1200 4-4. PRINTED WIRING BOARDS – MAIN SECTION (2/2) (SIDE B) – : Uses unleaded solder. S301 S304 MAIN BOARD (SIDE B) HOLD MENU ANT1 Semiconductor S305 TELESCOPIC Location S307 WORLD/ S306 ANTENNA LIGHT LOCAL SNOOZE R122 Ref. No. Location...

  • Page 10: Schematic Diagram

    ICF-C1200 4-5. SCHEMATIC DIAGRAM Refer to page 11 for Notes. Refer to page 11 for IC Block Diagrams. Refer to page 11 for Waveforms.
  • Page 11 ICF-C1200 Note on Schematic Diagram: MAIN SECTION Waveforms • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and W or less unless otherwise specified.
  • Page 12 ICF-C1200 • IC BLOCK DIAGRAMS IC101 CX1238N-T4 28 27 26 25 24 23 22 21 FM FRONT-END AM FRONT-END FM IF/ MPX REG. DISCRI IF/DET COUNTER TUNING COUNTER INDICATOR AUTOBLEND MONO/ST MUTING SELECT BAND PASS MUTE RIPPLE DECODER AMP FILTER...

  • Page 13: Exploded Views

    ICF-C1200 SECTION 5 EXPLODED VIEWS NOTE : • -XX, -X mean standardized parts, so they • The mechanical parts with no reference may have some difference from the original number in the exploded views are not one. supplied. • Items marked “ * ”are not stocked since they •...

  • Page 14: Electrical Parts List

    ICF-C1200 SECTION 6 MAIN ELECTRICAL PARTS LIST NOTE : • Due to standardization, replacements in the • SEMICONDUCTORS In each case, u : µ , for example : parts list may be different from the parts uA..: µ A.., uPA..: µ PA..
  • Page 15 ICF-C1200 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C404 1-164-346-11 CERAMIC CHIP L104 1-414-693-11 INDUCTOR 150nH C405 1-164-850-11 CERAMIC CHIP 10PF 0.50PF 16V (FM FREQUENCY COVERAGE) (JE) C406 1-164-850-11 CERAMIC CHIP 10PF 0.50PF 16V...
  • Page 16 ICF-C1200 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R127 1-216-864-11 SHORT R342 1-218-989-11 RES-CHIP 1/16W R128 1-218-990-11 SHORT R343 1-218-965-11 RES-CHIP 1/16W R129 1-803-120-21 THERMISTOR, NTC R344 1-218-965-11 RES-CHIP 1/16W R130 1-216-813-11 RES-CHIP 1/16W...
  • Page 17 ICF-C1200 MAIN Ref. No. Part No. Description Remark < SWITCH > S301 1-771-790-21 SWITCH, SLIDE (HOLD) S302 1-786-015-21 SWITCH, TACTILE (RADIO ON/SLEEP) S303 1-786-015-21 SWITCH, TACTILE (OFF) S304 1-771-627-21 SWITCH, TACTILE (MENU) S305 1-786-015-21 SWITCH, TACTILE (WORLD/LOCAL) S306 1-572-473-11 SWITCH, TACTILE (SNOOZE)
  • Page 18 ICF-C1200 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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