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Sony ICF-C112 Service Manual

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SERVICE MANUAL
Ver 1.0 2003. 03
Sony Corporation
9-877-123-01
2003C0400-1
Personal Audio Company
© 2003. 03
Published by Sony Engineering Corporation
SPECIFICATIONS
Time display:
12-hour system
Frequency range:
FM: 87.5 - 108 MHz
AM: 530 - 1710 kHz
Speaker:
Approx. 6.6 cm (2
inches) dia., 8 ohm
5/8
Power output:
120 mW (at 10% harmonic distortion)
Power requirements:
120 V AC, 60 Hz
For the power backup function: 9 V DC, one 6F22 battery
Battery life:
Approx. 14 hours, using Sony 006P (6F22) battery
Dimensions:
Approx. 135 × 100 × 130 mm (w/h/d)
× 4 × 5
(5
inches) incl. projecting parts and controls
3/8
1/8
Mass:
Approx. 570 g (1 lb 4 oz) not incl. battery
Design and specifications are subject to change without notice.
ICF-C112
FM/AM CLOCK RADIO
E Model
1

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Table of Contents
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  Summary of Contents for Sony ICF-C112

  • Page 1 Power requirements: 120 V AC, 60 Hz For the power backup function: 9 V DC, one 6F22 battery Battery life: Approx. 14 hours, using Sony 006P (6F22) battery Dimensions: Approx. 135 × 100 × 130 mm (w/h/d) × 4 × 5 inches) incl.
  • Page 2: Table Of Contents

    COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 3: Servicing Notes

    ICF-C112 SECTION 1 SERVICING NOTES 1-1. CORD DRESSING (POWER CORD) 1) Set the power cord as shown in the figure. 2) Mount the chassis with power cord retainer board and screws (P 3 × 10). Note: Tighten completely the screws (P 3 × 10).
  • Page 4: General

    ICF-C112 SECTION 2 GENERAL This section is extracted from instruction manual.
  • Page 5: Disassembly

    ICF-C112 SECTION 3 DISASSEMBLY Note : This set can be disassemble according to the following sequence. 3-1. PANEL (FRONT) (Page 5) 3-2. CABINET (UPPER) SINGLE ASSY (Page 6) 3-3. MAIN BOARD SECTION (Page 6) 3-4. MAIN BOARD, LED101, SWITCH BOARD (Page 7) Note : Follow the disassembly procedure in the numerical order given.
  • Page 6 ICF-C112 3-2. CABINET (UPPER) SINGLE ASSY 4 cabinet (upper) single assy 2 P 3x30 1 P 3x30 3-3. MAIN BOARD SECTION 3 P 3x10 2 CN1 1 Removal the solders. 4 MAIN board section...
  • Page 7 ICF-C112 3-4. MAIN BOARD, LED101, SWITCH BOARD 4 P 3x10 7 Removal the solders. 6 MAIN board claw 2 SWITCH board 1 P 3x10 claw 8 LED101 3 Removal the solders.
  • Page 8: Electrical Adjustments

    ICF-C112 SECTION 4 ELECTRICAL ADJUSTMENTS FM SECTION 0 dB = 1 µV FM FREQUENCY COVERAGE ADJUSTMENT Setting: Adjust for a maximum reading on level meter. BAND switch: FM VOLUME control: MIN 86.5 MHz 109.5 MHz FM RF signal FM lead wire...
  • Page 9 ICF-C112 Adjustment Location: AM IF L4, CT3 TRACKING LEAD WIRE ANTENNA L1, CT5 TRACKING (SPEAKER) TUNING BAND L3, CT4 AM FREQUENCY COVERAGE ADJ L2, CT6 FM FREQUENCY COVERAGE ADJ...
  • Page 10: Diagrams

    ICF-C112 SECTION 5 DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. Common Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 11: Block Diagram

    ICF-C112 5-1. BLOCK DIAGRAM VREG w VOLUME BAND FM DISCRI LEAD WIRE ANTENNA DISCRI BAND SW DISCRIMINATOR FM ANT CV1-3 CT5 FM RF MIX OUT DET OUT AF IN CT5,L1 IF IN AF OUT FM IF AF POWER (SPEAKER) TRACKING...
  • Page 12: Printed Wiring Boards

    ICF-C112 5-2. PRINTED WIRING BOARDS • Refer to page 10 for Common Note on Printed Wiring Boards. MAIN BOARD • Semiconductor Location Ref. No. Location FERRITE-ROD ANTENNA D111 D112 LEAD WIRE D114 ANTENNA D301 D302 D304 BPF1 BATTERY IC101 DRY BATTERY SNAP "006P"...
  • Page 13: Schematic Diagram

    ICF-C112 5-3. SCHEMATIC DIAGRAM • Refer to page 10 for Common Note on Schematic Diagram and page 14 for IC Block Diagrams. LED101 JC105 R101 R136 JC103 CV1-1 CV1-3 CV1-4 CV1-2 R108 R113 R109 R110 R114 R111 R112 R115 BPF1...
  • Page 14: Ic Block Diagrams

    ICF-C112 5-4. IC BLOCK DIAGRAMS IC1 CXA1019S 29 28 27 26 18 17 16 AM IF DET AGC TUNING METER AF POWER AMP AM FE FM IF DISCRIMINATOR FM FE IC101 LM8560N 17 16 15 INPUT CONTROL STAND GATE BY DET...
  • Page 15: Exploded Views

    ICF-C112 SECTION 6 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by mark 0 or dotted line with mark number in the exploded views are not supplied. Example : 0 are critical for safety.
  • Page 16: Main Board Section

    ICF-C112 6-2. MAIN BOARD SECTION LED101 not supplied not supplied (SWITCH board) not supplied (POWER CORD RETAINER board) T301 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
  • Page 17: Electrical Parts List

    ICF-C112 SECTION 7 MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by mark 0 or dotted line with mark the parts list may be different from the they are seldom required for routine service.
  • Page 18 ICF-C112 MAIN SWITCH TRANSFORMER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > SWITCH BOARD ************* LED101 6-500-504-01 LED COG509T0A1 < SWITCH > < TRANSISTOR > S100 1-692-181-21 SWITCH, SLIDE (ALARM VOL) (BLACK) 8-729-026-52 TRANSISTOR 2SA1576A-T106-R...
  • Page 19 ICF-C112 MEMO...
  • Page 20 ICF-C112 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...