ICF-C112 SERVICE MANUAL FM/AM CLOCK RADIO. E Model. Ver Sony Corporation SPECIFICATIONS

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SERVICE MANUAL E Model Ver 1.0 2003. 03 SPECIFICATIONS Time display: 12-hour system Frequency range: : 87.5-108 MHz AM: 530-1710 khz Speaker: Approx. 6.6 cm (2 5/8 inches) dia.

1 SERVICE MANUAL E Model Ver SPECIFICATIONS Time display: 12-hour system Frequency range: : MHz AM: khz Speaker: Approx. 6.6 cm (2 5/8 inches) dia., 8 ohm 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 mm (w/h/d) (5 3/ /8 inches) incl. projecting parts and controls Mass: Approx. 570 g (1 lb 4 oz) not incl. battery Design and specifications are subject to change without notice. /AM CLOCK RADIO C Sony Corporation Personal Audio Company Published by Sony Engineering Corporation 1

2 Notes on Chip Component Replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. TABLE OF CONTENTS 1. SERVICING NOTES 1-1. Cord Dressing (Power Cord) Pointer Alignment GENERAL Installing the Battery... 4 Setting the Clock... 4 Operating the Radio... 4 Setting the Alarm... 4 Setting the Sleep Timer DISASSEMBLY 3-1. Panel (Front) Cabinet (Upper) Single Assy Main Board Section Main Board, LED101, Switch Board ELECTRICAL ADJUSTMENTS DIAGRAMS 5-1. Block Diagram Printed Wiring Boards Schematic Diagram IC Block Diagrams EXPLODED VIEWS 6-1. Cabinet (Upper) Section Main Board Section ELECTRICAL PARTS LIST SAFETY-RELATED COMPONENT WARNING!! 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. 2

3 SECTION 1 SERVICING NOTES ICF-C 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). screw P 3x10 power cord retainer board power cord 1-2. POINTER ALIGNMENT 6 P 3x10 5 MAIN board 4 1 pointer 3 2 knob (tuning) chassis 3

4 SECTION 2 GENERAL This section is extracted from instruction manual. 4

5 SECTION 3 DISASSEMBLY ICF-C112 Note : This set can be disassemble according to the following sequence. SET 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 PANEL (FRONT) claws 2 claws 3 panel (front) 1 P 2.6x8 5

6 3-2. CABINET (UPPER) SINGLE ASSY 4 cabinet (upper) single assy 3 2 P 3x30 1 P 3x MAIN BOARD SECTION 3 P 3x10 2 CN1 1 Removal the solders. 4 MAIN board section 6

7 3-4. MAIN BOARD, LED101, SWITCH BOARD 4 P 3x10 7 Removal the solders. 6 MAIN board claw 2 SWITCH board 5 8 LED101 claw 1 P 3x10 3 Removal the solders. 7

8 SECTION 4 ELECTRICAL ADJUSTMENTS SECTION 0 db = 1 µv Setting: BAND switch: VOLUME control: MIN RF signal generator AM SECTION Setting: BAND switch: AM VOLUME control: MIN 0.01µF 400Hz, 30% modulation frequency deviation ±22.5kHz Output level: as low as possible AM RF signal generator 400Hz, 30% AM modulation Output level: as low as possible lead wire antenna terminal set Put the lead-wire antenna close to the set. FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L2 CT MHz MHz TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L1 CT MHz MHz AM IF ADJUSTMENT Adjust for a maximum reading on level meter. T1 455 khz AM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L3 CT4 515 khz 1,750 khz AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L4 CT3 600 khz 1,400 khz Adjustment Location: See page 9. Connecting Level Meter ( and AM) set 16 Ω level meter (range: V ac) speaker terminal Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. 8

9 Adjustment Location: LEAD WIRE ANTENNA T1 AM IF ADJ L4, CT3 AM TRACKING ADJ SP1 (SPEAKER) SP1 + + T1 L2 L1 L4 CT5 CT3 CT6 CT4 L3 CV1 TUNING S1 BAND L1, CT5 TRACKING ADJ AM RV1 L3, CT4 AM FREQUENCY COVERAGE ADJ L2, CT6 FREQUENCY COVERAGE ADJ 9

10 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. All resistors are in Ω and 1 /4 W or less unless otherwise specified. f : internal component. C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. A : B+ Line. H : adjustment for repair. Total current is measured with no-signal. Power voltage is dc 9V and fed with regulated dc power supply from battery terminal. Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : ( ) : AM Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. Signal path. F : f : AM Common Note on Printed Wiring Boards: X : parts extracted from the component side. Y : parts extracted from the conductor side. f : internal component. : Pattern from the side which enables seeing. 10

11 5-1. BLOCK DIAGRAM LEAD WIRE ANTENNA 16 BAND SW S1 BAND AM CF3 DISCRI 3 DISCRI RV1 w VOLUME VOL 5 Q1 VREG CT3,L4 AM TRACKING CT5,L1 TRACKING CT6,L2 FREQUENCY COVERAGE CT4,L3 AM FREQUENCY COVERAGE AM FERRITE-ROD ANTENNA L1 L2 L3 L4 CV1 TUNING CV1-3 CT5 CV1-4 CT6 CV1-1 CT3 CV1-2 CT4 +B ANT 13 RF MIX OUT OSC 8 AM ANT 11 AM OSC 6 FRONT-END AM FRONT-END REG 9 VREG T1 T1 AM IF CF2 OSC 1/25 or 1/30 CF1 DISCRIMINATOR IF IN 18 IF DET OUT AF IN AF OUT AF POWER 28 AMP AM IF IN 17 AM IF IC1 /AM FRONT-END IF AMP,DET IC101 CLOCK TIME CTR +B 27 OUTPUT CONTROL Q302 RIPPLE FILTER S100 VOL HIGH LOW VDD 15 SLEEP OUT 17 NF 4 +B SWITCH Q301 S101-1 S101-2 D302 D301 D304 D111 D112 SP1 (SPEAKER) DRY BATTERY "006P" 9V (IEC DESIGNATION 6F22) KEEP THE CORRECT TIME DURING POWER STOPPAGE < BACK UP > T301 POWER TRANSFORMER ~ AC IN 14 Signal path LED101 LED DISPLAY (12H) , DISPLAY DECODER/ DRIVER S108 SLEEP DISPLAY CONTROL SLEEP INPUT DISP INPUT CONTROL S105 TIME SET M MIN SET HOUR SET S106 TIME SET H SNOOZE INPUT OUT 16 OFF 18 S111 SNOOZE/SLEEP OFF S101 (Function Selector) BUZZER RADIO : : AM S103 D114 S104 CLOCK +B RADIO ON OFF 11 11

12 5-2. PRINTED WIRING BOARDS Refer to page 10 for Common Note on Printed Wiring Boards A MAIN BOARD Semiconductor Location B C D E F G S1 BAND AM JC1 CT3 CT4 S1 JW2 C1 CV1 TUNING C32 C31 CV1-1 CV1-2 CV1-3 CV1-4 C6 L3 AM OSC L4 AM FERRITE-ROD ANTENNA C2 C3 CT5 CT6 L1 RF S108 SLEEP R2 C15 C33 C17 L2 OSC C4 R9 C34 R11 C5 BPF1 R8 R3 CF3 15 R15 C18 16 C14 C16 JW5 S103 CF2 IC1 C23 C24 C27 JW C28 CF1 S101 (Function Selector) -2 BUZZER RADIO RADIO ON OFF C21 C22 C25 JW3 C26 R14 T1 M S105 C29 C35 JW4 TIME SET R13-1 RED WHT D114 JC105 JW6 3 1 JW101 C306 RED D1 D2 Q301 B C E B C E Q302 R305 JW7 S104 CLOCK D304 RED WHT GRY BLK RED LEAD WIRE ANTENNA BATTERY SNAP RED SP1 (SPEAKER) DRY BATTERY "006P" 9V (IEC DESIGNATION 6F22) KEEP THE CORRECT TIME DURING POWER STOPPAGE <BACK UP> SWITCH BOARD LOW S100 HIGH VOL 1 3 RED (11) RED TRANSFORMER BOARD 1 4 T301 POWER TRANSFORMER Ref. No. Location D1 B-8 D2 B-8 D111 I-3 D112 I-3 D114 G-7 D301 H-9 D302 I-8 D304 D-9 IC1 D-5 IC101 H-5 LED101 I-6 Q1 H-2 Q301 D-8 Q302 E-8 H I RV1 VOLUME RV1 Q1 B C E C9 R10 R5 D111 C118 R6 C12 R4 R135 R137 C119 JW104 C109 R136 R108 R109 R110 R111 R112 IC101 R116 R115 C116 C115 R117 C104 C105 R114 R113 R JC103 JW102 JW103 S111 SNOOZE/ SLEEP OFF S106 H C304 1 C303 R303 R101 D302 C301 C302 D301 CN1 4 JW300 JW301 1 D112 LED101 LED DISPLAY (12H) (11) (11) ~ AC IN J 12 12

13 C116 C115 C105 R117 C104 D114 C12 R6 C31 C32 C9 ICF-C SCHEMATIC DIAGRAM Refer to page 10 for Common Note on Schematic Diagram and page 14 for IC Block Diagrams. LED101 L4 C1 CT3 L1 CT5 C3 C2 L2 C4 C5 R2 CT6 L3 CT4 C6 JC105 R101 R136 CV1-1 CV1-3 CV1-4 CV1-2 R108 R109 JC103 R113 BPF1 R3 C33 JW2 R10 RV1 R5 Q1 JC1 R110 R111 R112 R116 R114 R115 D1 D2 R8 C14 C15 R9 JW5 R4 C16 C17 CF3 C34 IC101 R135 R137 IC B/D C118 C119 JW7 IC1 S101 D111 D112 S1 IC B/D S105 S106 S108 S111 JW1 C18 R14 R15 C21 C22 C23 C24 C25 C26 C27 R11 JW103 JW102 C109 S103 JW104 S104 R133 T1 CF1 CF2 C35 C29 C28 JW6 JW4 JW3 SP1 S100 R13 Q302 T301 JW101 R303 C302 C306 R305 Q301 C303 D302 CN1 D304 C304 C301 JW301 D301 JW

14 5-4. IC BLOCK DIAGRAMS IC1 CXA1019S GND GND AF OUT +B RIPPLE FILTER AF IN DET OUT AFC (J)AGC AFC (W)AGC IF GND LED NC IF IN AM IF IN BAND SW AM IF DET AGC TUNING METER AF POWER AMP AM FE IF DISCRIMINATOR FE GND GND DISCRI NF VOL AM OSC AFC OSC REG RF AM ANT NC ANT FE GND MIX OUT IC101 LM8560N 12/24 HR SELECT CR/INPUT 50/60 Hz SELECT 50/60 Hz INPUT SNOOZE INPUT SLEEP INPUT AM & 10, S HR AG & DE PM & 10, S HR B 10, S HR C & HR B HR B & G HR C & D HR A & F 10, S MIN A & F 10, S MIN B & G 10, S MIN C & D 10, S MIN E & MIN E MIN B & G MIN C & D MIN A & F COLON OUTPUT HOUR SET MIN SET VSS DISP OFF SLEEP OUT OUT VDD OSC D D D D D D STAND BY DET 50/60Hz 2Hz CTR GATE 1/25 or 1/30 RESET CONTROL INPUT CONTROL DISPLAY CONTROL PWR UP 1/2 1Hz F.SAMPLE OUTPUT CONTROL BLANK & FLASH PF. DET SEC CTR GATE MIN CTR TIME MIN CTR COMPARATOR HR CTR TIME HR CTR S.SAMPLE CONTROL SLEEP CTR SEC,TIME, SLEEP OUTPUT DECODER/DRIVER 14 14

15 NOTE: The mechanical parts with no reference number in the exploded views are not supplied. Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. SECTION 6 EXPLODED VIEWS Color Indication of Appearance Parts Example : KNOB, BALANCE (WHITE)... (RED) R R Parts Color Cabinet s Color Accessories are given in the last of this parts list. ICF-C112 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified CABINET (UPPER) SECTION #2 #1 #2 Ref. No. Part No. Description Remark LID, BATTERY CASE 2 X CABINET (UPPER) SINGLE ASSY (BLACK)...(BLACK) 2 X CABINET (UPPER) SINGLE ASSY (WHITE)...(WHITE) Ref. No. Part No. Description Remark KNOB (FUNCTION) (BLACK)...(BLACK) KNOB (FUNCTION) (WHITE)...(WHITE) PANEL (FRONT) # SCREW +P 2.6X8 TYPE2 NON-SLIT # SCREW +P 3X30 TYPE2 NON-SLIT 15

16 6-2. MAIN BOARD SECTION #3 #3 L #3 59 SP1 LED not supplied #3 #3 not supplied (SWITCH board) not supplied (POWER CORD RETAINER board) 52 T The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark KNOB (VOL) (BLACK)...(BLACK) KNOB (VOL) (WHITE)...(WHITE) CABINET (LOWER) (BLACK)...(BLACK) CABINET (LOWER) (WHITE)...(WHITE) FOOT, RUBBER CUSHION KNOB (TUNING) (BLACK)...(BLACK) KNOB (TUNING) (WHITE)...(WHITE) POINTER 62 A A TRANSFORMER BOARD, COMPLETE CORD, POWER * 55 A A MAIN BOARD, COMPLETE (BLACK) * 55 A A MAIN BOARD, COMPLETE (WHITE) HOLDER (ANTENNA) SNAP, BATTERY L COIL, FERRITE-ROD ANTENNA (AM) LED LED COG509T0A1 SP SPEAKER (6.6cm) 0 T TRANSFORMER, POWER # SCREW +P 3X10 TYPE2 NON-SLIT ANTENNA (WIRE) 16

17 NOTE: Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. RESISTORS All resistors are in ohms. METAL:Metal-film resistor. METAL OXIDE: Metal oxide-film resistor. F:nonflammable SECTION 7 ELECTRICAL PARTS LIST Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. SEMICONDUCTORS In each case, u : µ, for example: ua.. : µa.. upa.. : µpa.. upb.. : µpb.. upc.. : µpc.. upd.. : µpd.. CAPACITORS uf : µf COILS uh : µh The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. When indicating parts by reference number, please include the board. ICF-C112 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * A A MAIN BOARD, COMPLETE (BLACK) * A A MAIN BOARD, COMPLETE (WHITE) ********************* SNAP, BATTERY ANTENNA (WIRE) HOLDER (ANTENNA) SCREW +P 3X10 TYPE2 NON-SLIT C CERAMIC CHIP 0.01uF 10% 25V C CERAMIC CHIP 0.01uF 10% 25V C CERAMIC CHIP 0.01uF 10% 25V C CERAMIC CHIP 0.01uF 10% 25V C ELECT 470uF 20% 10V C ELECT 220uF 20% 16V C ELECT 220uF 20% 10V < BPF > BPF FILTER, BAND PASS < CAPACITOR > C CERAMIC CHIP 2PF 0.25PF 50V C CERAMIC CHIP 10PF 0.5PF 50V C CERAMIC CHIP 10PF 0.5PF 50V C CERAMIC CHIP 10PF 0.5PF 50V C CERAMIC CHIP 18PF 5% 50V C CERAMIC CHIP 3PF 0.25PF 50V C CERAMIC CHIP 100PF 5% 50V C CERAMIC CHIP 0.01uF 10% 25V C CERAMIC CHIP 0.1uF 10% 16V C ELECT 47uF 20% 10V C CERAMIC CHIP 0.01uF 10% 25V C ELECT 1uF 20% 50V C CERAMIC CHIP 0.01uF 10% 25V C ELECT 4.7uF 20% 50V C ELECT 10uF 20% 50V C CERAMIC CHIP 0.022uF 10% 25V C CERAMIC CHIP 0.1uF 10% 16V C ELECT 10uF 20% 50V C ELECT 470uF 20% 10V C CERAMIC CHIP 1uF 10V C CERAMIC CHIP 1uF 10V C ELECT 100uF 20% 10V C CERAMIC CHIP 0.1uF 10% 16V C CERAMIC CHIP 100PF 5% 50V C CERAMIC CHIP 0.001uF 10% 50V C CERAMIC CHIP 100PF 5% 50V C CERAMIC CHIP 0.001uF 10% 50V C CERAMIC CHIP uF 10% 50V C CERAMIC CHIP uF 10% 50V C CERAMIC CHIP 0.047uF 10% 16V C CERAMIC CHIP 0.01uF 10% 25V C CERAMIC CHIP 0.01uF 10% 25V < FILTER > CF FILTER, AM CERAMIC CF FILTER, CERAMIC (COMBINATION) CF FILTER, CERAMIC (COMBINATION) < CONNECTOR > * CN SOCKET, CONNECTOR 4P < VARIABLE CAPACITOR > CT CAP, VAR CV CAP, VAR (TUNING) < DIODE > D DIODE 1SS D DIODE 1SS D DIODE 1SS D DIODE 1SS D DIODE 1SS D DIODE 1N4002 D DIODE 1SS D DIODE 1SS < IC > IC IC CXA1019S IC IC LM8560N < JUMPER RESISTOR > JC METAL CHIP 0 5% 1/10W JC METAL CHIP 0 5% 1/10W JC METAL CHIP 0 5% 1/10W < COIL > * L COIL, AIR-CORE L COIL, OSCILLATION L COIL, OSCILLATION (AM) L COIL, FERRITE-ROD ANTENNA (AM) 17

18 MAIN SWITCH TRANSFORMER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > LED LED COG509T0A1 < TRANSISTOR > Q TRANSISTOR 2SA1576A-T106-R Q TRANSISTOR 2SA1576A-T106-R Q TRANSISTOR 2SC2001TP-K1K2 < RESISTOR > SWITCH BOARD ************* < SWITCH > S SWITCH, SLIDE ( VOL) (BLACK) S SWITCH, SLIDE ( VOL) (WHITE) ************************************************************* A A TRANSFORMER BOARD, COMPLETE ****************************** R METAL CHIP 4.7K 5% 1/10W R METAL CHIP 22 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 10K 5% 1/10W R METAL CHIP 47K 5% 1/10W R METAL CHIP 1K 5% 1/10W R METAL CHIP 47 5% 1/10W R METAL CHIP 22K 5% 1/10W R METAL CHIP 4.7K 5% 1/10W R METAL CHIP 10K 5% 1/10W R METAL CHIP 2.2K 5% 1/10W R METAL CHIP 470 5% 1/10W R METAL CHIP 47 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W CORD, POWER < TRANSFORMER > 0 T TRANSFORMER, POWER ************************************************************* MISCELLANEOUS *************** SP SPEAKER (6.6cm) ************************************************************* ACCESSORIES ************ MANUAL, INSTRUCTION (ENGLISH,FRENCH, SPANISH) R METAL CHIP 100K 5% 1/10W R METAL CHIP 100K 5% 1/10W R METAL CHIP 220K 5% 1/10W R METAL CHIP 100K 5% 1/10W R CARBON 4.7 5% 1/4W R METAL CHIP 22 5% 1/10W R CARBON 4.7 5% 1/4W R CARBON 100 5% 1/4W R METAL CHIP 1K 5% 1/10W < VARIABLE RESISTOR > RV RES, VAR, CARBON 50K (VOLUME) < SWITCH > S SWITCH, SLIDE (BAND) (BLACK) S SWITCH, SLIDE (BAND) (WHITE) S SWITCH, SLIDE (Function Selector) S SWITCH, TACTILE () S SWITCH, TACTILE (CLOCK) S SWITCH, TACTILE (TIME SET M) S SWITCH, TACTILE (TIME SET H) S SWITCH, TACTILE (SLEEP) S SWITCH, TACTILE (SNOOZE/SLEEP OFF) < TRANSFORMER > T TRANSFORMER, IF ************************************************************* 18 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

19 MEMO 19

20 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 New 20

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