sony_icf-j1_service_manual 电路图 维修原理图.pdf

SERVICE MANUAL Ver 1.0 2000. 12 FM/SW/MW 3 BAND RADIO E Model ICF-J1 SPECIFICATIONS Frequency range: FM: 87.5 108 MHz SW: 4.75 18.0 MHz MW: 530 1 605 kHz Speaker Approx. 9.2 cm (3 5/8 inches) dia., 8 Output v jack ( 3.5 mm minijack) Power output 350 mW (at 10 % harmonic distortion) Power requirements 3 V DC, two R20 (size D) batteries Dimensions Approx. 233 119.2 56 mm (w/h/d) (9 1/4 4 3/4 2 1/4 in.) incl. projecting parts and controls Mass Approx. 815 g (29 oz) incl. batteries Supplied accessories (Middle Eastern model only) Case (1) Hand strap (1) Design and specifications are subject to change without notice. Battery life (approx. hours) When usingFMSW/MW Sony alkaline 240250 LR20 (size D) batteries Sony 120130 R20 (size D) batteries Features High power sound Long battery life with two R20 (size D) batteries High sensitivity Easy tuning with the tuning indicator RadioFans.CN 2 TABLE OF CONTENTS 1.GENERAL.2 2.DISASSEMBLY.3 3.ASSEMBLY.7 4.ELECTRICAL ADJUSTMENTS.9 5.DIAGRAMS 5-1.Block Diagram . 11 5-2.Printed Wiring Board . 13 5-3.Schematic Diagram . 15 6.EXPLODED VIEWS. 17 7.ELECTRICAL PARTS LIST. 19 SECTION 1 GENERAL This section is extracted from instruction manual. Insert the # side of the battery first. Inserte en primer lugar la parte # de la pila. R 20 (size D) 2 pila R20 (tamao D) 2 Pass the strap through the buckle. Pase la correa a travs de la hebilla. Telescopic antenna Antena telescpica indicator indicador Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. CF3 CF1 mark MarkCenter frequency red10.70 MHz blue10.67 MHz orange10.73 MHz black10.64 MHz white10.76 MHz HOW TO CHANGE THE CERAMIC FILTERS This model is used two ceramic filters of CF1 and CF3. You must used same type of color marked ceramic filters in order to meet same specifications. Therefore, the ceramic filter must changed two pieces together since its supply two pieces in one package as a spare parts. RadioFans.CN 3 SECTION 2 DISASSEMBLY This set can be disassemble in the order shown below. Note: Follow the disassembly procedure in the numerical order given. LID, BATTERY CASE SetLid, Battery Case “Knob (Tuning)”, “Knob (Volume)” Chassis SectionMain BoardChassis Antenna, Ferrite-Red (MW) (L1) Speaker (9.2 cm) (SP1) “Antenna, Telescopic (FM/SW) (ANT1)”, “Cabinet (Rear)” 1Open the battery case lid. 2boss 2boss 3lid, battery case 2tuning, spring knob (volume) hole variable resistor (RV1) Note: Insert the knob (volume) into the variable resistor (RV1), meeting both shapes of the hole in the knob and the shaft of RV1 as shown. 3knob (tuning) 1 4 6knob (volume) 5O ring, P-9 “KNOB (TUNING)”, “KNOB (VOLUME)” RadioFans.CN 4 “ANTENNA, TELESCOPIC (FM/SW) (ANT1)”, “CABINET (REAR)” CHASSIS SECTION antenna, wire Note: Arrange the antenna, wire to the 4 slots. 2claw 5lug, 3 2claw 3 4screw (P2.6 8) 1five screws (BTP3 12) 7cabinet (rear) 6antenna, telescopic (FM/SW) (ANT1) 2terminal (+), battery 3terminal (), battery 4chassis section 1Remove two solders of speaker lead wires. MAIN Board speaker lead wire (RED) battery terminal () lead wire (WHT) SP 3 SP # GND + B battery terminal (+) lead wire (WHT/RED) speaker lead wire (WHT) LEAD WIRE COLOR INDICATION ON MAIN BOARD. terminal (), battery terminal (+), battery Note: When mounting the battery terminals (+) and (), engage the lead wires to the hook on the cabinet (front) and route them as shown. hook cabinet (front) RadioFans.CN 5 Note: For the mounting position of the antenna, ferrite-rod (MW) (L1), refer to the “ANTENNA, FERRITE-ROD (MW) (L1)” in DISASSEMBLY. 7claw slider 7claw 8MAIN board Note: On installation MAIN board adjust the S1, S2 and slider, knob (POWER). 5gear (tuning capacitor) Including “spring (gear)”, “gear (B), tuning capacitor”. Note: When the gear (tuning capacity), spring (gear), and the turning capacitor gear(B) were removed and then, they are mounted on the main board, refer to the “GEAR (TUNING CAPACITOR)”, “SPRING (GEAR)”, “GEAR (B), TUNING CAPACITOR” in ASSEMBLY on page 8. 6Remove LED LN21RPL (TUNE) (D2) by raising in the arrow direction, not giving an excessive force. knob (POWER) S2 S1 2screw (BTP3 12) 2screw (BTP3 12) 1Remove three solders of ferrite-rod (MW) antenna (L1) leads. 4screw (B2.6 5) 3holder (gear) () MAIN BOARD ANTENNA, FERRITE-ROD (MW) (L1) 2Remove five portions bond SC-12N. Note: When mounting the antenna, ferrite-rod (MW) (L1), route the lead wires as shown and apply the bond SC-12N to the removed portion. 4antenna, ferrite-rod (MW) (L1) 3four claws 1Remove three solders of ferrite-rod (MW) antenna (L1) lead wires. FERRITE-ROD ANTENNA LEAD WIRE COLOR INDICATION ON MAIN BOARD. black lead wire natural lead wire red lead wire MAIN board BLK NATURAL RED RadioFans.CN 6 SPEAKER (9.2 cm) (SP1) 2claw 3Remove speaker (SP1) in the direction of arrow A. speaker lead wire (RED) speaker lead wire (WHT) cabinet (front) claw speaker (9.2 cm) (SP1) A 3 # 1Remove shaded portion bond SC-108. Note: When installing the speaker (SP1), set it in the position as shown, and apply the bond SC-108 to the removed portion. CHASSIS 9two claws 0pointer qaplate, back qsrack qdchassis 3slider Note: When assembling the chassis, refer to the “DIAL POINTER SETTING” in ASSEMBLY. 2two claws 2two claws 7two claws 8shaft, tuning 5knob (power) 4 4 1knob (band) 6gear, midway RadioFans.CN 7 SECTION 3 ASSEMBLY Note: Follow the assembly procedure in the numerical order given. DIAL POINTER SETTING RACK MAIN BOARD 4pointer 3Mount the back plate, meeting with two bosses of the chassis. 1rack 6gear, midway 5shaft, tuning boss chassis boss 2Meet the portion of the rack with the mark of the chassis. chassis mark a a a a b b b b rack 2claw 3LED LN21RPL (TUNE) (D2) 4screw (BTP3 12) 1MAIN board 2claw RadioFans.CN 8 “GEAR (TUNING CAPACITOR)”, “SPRING (GEAR)” AND “GEAR (B), TUNING CAPACITOR” “GEAR (TUNING CAPACITOR)”, “SPRING (GEAR)” AND “GEAR (B), TUNING CAPACITOR” SETTING gear, midway 1Turn variable condenser (CV1) shaft fully to the arrow direction (ant1-clok wise). Note: Make sure that two tuning capacitor gears are meshing with the midway gear. gear, midway triangle mark triangle mark 3screw (B2.6 5) Note: Secure screw. 5screw (BTP3 12) 4holder (gear) 2gear (tuning capacitor) Including “spring (gear)”, “gear (B), tuning capacitor”. Note: Adjust so that the triangle marked is at the position shown and install. () gear (tuning capacitor) 1Insert the spring (gear) into a hole in the gear (tuning capacitor). 2Fit the tuning capacitor gear (B) to the gear (tuning capacitor), and then turn the tuning capacitor gear (B) in the A direction. A 3Engage the spring (gear) to the hook of the tuning capacitor gear (B) as shown. hook spring (gear) RadioFans.CN 9 AM IF ADJUSTMENT Adjust for a maximum reading on level meter T1455 kHz MW FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L5516.5 kHz CT1-41,631.5 kHz MW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L1600 kHz CT1-11,400 kHz SW FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L64.7 MHz CT618.5 MHz SW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L24.75 MHz CT518 MHz FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L487.35 MHz CT1-3108.25 MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L387.5 MHz CT1-2108 MHz Adjustment Location: MAIN board (See page 10) SECTION 4 ELECTRICAL ADJUSTMENTS 0 dB=1 V MW Setting: Band switch: MW SW Setting: Band switch: SW FM Setting: Band switch: FM Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. Remove FM/SW antenna in SW and FM adjustments. AM RF signal generator 30% amplitude modulation by 400 Hz signal Output level: as low as possible Put the lead-wire antenna close to the set. + level meter set 8 TP9 (SP ) TP8 (SP +) AM RF signal generator 30% amplitude modulation by 400 Hz signal Output level: as low as possible + level meter TP9 (SP ) TP8 (SP +) TP1 (ANT IN) set 8 12 pF FM RF signal generator 22.5 kHz frequency deviation by 400 Hz signal Output level: as low as possible + level meter TP9 (SP ) TP8 (SP +) TP1 (ANT IN) set 8 0.01 F RadioFans.CN 10 Adjustment Location: L1 CT1-1 MW Tracking Adjustment L3 CT1-2 FM Tracking Adjustment T1 AM IF Adjustment SW Tracking Adjustment L2 CT5 MAIN BOARD (Component Side) MW Frequency Coverage Adjustment CT1-4 L5 SW Frequency Coverage Adjustment CT6 L6 CT1-3 L4 FM Frequency Coverage Adjustment MAIN BOARD (Conductor Side) TP1 (ANT IN) TP2 (GND) TP9 (SP ) TP8 (SP +) RadioFans.CN ICF-J1 11 12 SECTION 5 DIAGRAMS 5-1.BLOCK DIAGRAM 13151824 16 3 BPF BPF1 L2 SW ANT CT5 ANT1 FM/SW TELESCOPIC ANTENNA FM FRONT-END FM ANT 11 AM FRONT-END AM ANT MIX OUT + L5 MW OSC L6 SW OSC CT1 4 CV1 1 S1 3 S1 4 CT1 1 108 CV1 2CT1 3 CT1 2CV1 3 FM RF FM OSC FM TRACKING CT1 2, L3CT1 3, L4 L3 FM RF L4 FM OSC FM FREQUENCY COVERAGE CT5, L2 SW TRACKING CT1 1, L1 MW TRACKING L1 MW FERRITE-ROD ANTENNA CV1 4 S1 5S1 6 CT1 4, L5 MW FREQUENCY COVERAGE CT6, L6 SW FREQUENCY COVERAGE CT6 BAND FM MW SW S1 6 AM OSC FM/AM FRONT-END, FM/AM IF AMP, DET, AGC IC1 T1 AM IF CF3 CF2 17 FM DISCRIMINATOR FM IF AMP AM IF, DET, AGC FM IFIN AM IFIN TUNING METER DISCRI CF1 20 LED TUNE D2 HIGH CUT SWITCH Q1 DET OUT BAND SW VOLUME RV1 S1 2 1311 POWER AMP INVERTER AMP POWER AMP 863 PWR OUT1 PWR OUT2 INV OUTIN2 IN1 SP1 (SPEAKER) 1517 RIPPLE FILTER Q2 RIPPLE FILTER BASE OUT REF IN POWER S2 ON OFF BATT B+ DRY BATTERY SIZE “D” (IEC DESIGNATION R20) 2PCS. 3V v J1 IC2 POWER AMP, RIPPLE FILTER 05 SIGNAL PATH : FM : MW/SW S1 1 AM IF FOR MW/SW RadioFans.CN ICF-J1 13 14 5-2.PRINTED WIRING BOARD Q1 B C E Q2 IC2 IC1 B C E L7 JW6 C34 + C37 + JW3 C29 + C23 + C26 BPF1 + C25 + JW7 JW8 JW15 JW9 T1 AM IF CF3 CF2 C13C14C15 + + + C19 + C9 + L4 FM OSC L5 MW OSC L6 SW OSC D2 L2 SW ANT CT5 S2 CF1 RV1 JW13 JW12 JW10JW11 C38 + J1 C28 R10 R9 C39 C31JC6 JC7 R7 C44 C32 C24 C27 C30 R8 C22 C36 C40 C35 C33 R2 C12 R1 C11 C10 C45 R16 C3 R3 JC4 S1 C1 C41 C4 C18 C16 C17 R11 C20 C21 R4 JC8 R6 R5 C5 C6 CT6 JW2 L3 FM RF MAIN BOARD 05 JC5 C2 115 1630 12345678910 A B C D E F G H TUNE JC2 C7 6 5 4 3 2 1 BAND FM MW SW TP1 (ANT IN) TP2 (GND) JW1 ANT1 FM/SW TELESCOPIC ANTENNA L1 MW FERRITE-ROD ANTENNA BLK NATURAL RED 1 3 CT1-1CT1-4 CV1-1CV1-4 CT1-2CT1-3 CV1-2CV1-3 POWER VOLUME OFF ON TP8 (SP+) v 18 10 91JW4 JW5 TP9 (SP ) SP1 DRY BATTERY SIZE “D” (IEC DESIGNATION R20) 2PCS. 3V RED WHT WHT WHT/RED 1-680-291- 11 (11) Semiconductor Location Ref. No.Location D2A-3 IC1F-4 IC2F-7 Q1G-4 Q2E-7 Note on Printed Wiring Board: X : parts extracted from the component side. Y : parts extracted from the conductor side. W: indicates side identified with part number. f: internal component. : Pattern from the side which enables seeing. RadioFans.CN ICF-J1 15 16 5-3.SCHEMATIC DIAGRAM IC Block Diagrams IC1CXA1019S 123456789101514131211 FM DISCRIMINATOR AF POWER AMPAM FEFM IF TUNING METER AM IF DET AGC FM FE 232221202425191817162928272630 GND GND AF OUT VCC RIPPLE FILTER AF IN DET OUT AFC AGC AFC AGC IF GND METER N.C FM IF IN AM IF IN FM/AM BAND SELECT FM/AM IF OUT FE GND N.C AM RF IN FM RF REG OUT FM OSC FM RF IN AFC AM OSC VOL NF FM DISCRI GND GND IC2BA6640F-E2 181716151413121110 123456789 + + + BIAS RF OUT RFC BASE OUT MUTE OUT1 IN1 NF1 PWR OUT1 VCC STNBY PWR MUTE INVOUT NFB MUTE OUT2 IN2 NF2 PWR OUT2 GND RIPPLE FILTER MUTE PWR1 PWR2 INV Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. f: internal component. C : panel designation. A : B+ Line. U : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dc power supply from battery terminal. Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : FM () : MW : SW Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Signal path. F: FM f: MW/SW RadioFans.CN SECTION 6 EXPLODED VIEWS Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. The mechanical parts with no reference num- ber in the exploded views are not supplied. Accessories and packing materials are given in the last of the electrical parts list. NOTE: -XX and -X mean standardized parts, so they may have some difference from the original one. Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts Color Cabinets Color (1)CABINET SECTION Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark 1X-3380-322-1 CABINET (FRONT) SUB ASSY 23-223-773-01 TERMINAL (+), BATTERY 33-223-774-01 TERMINAL (-), BATTERY 43-223-756-01 CABINET (REAR) 53-223-775-01 TERMINAL (+ -), BATTERY 63-227-727-01 CUSHION (BATTERY TERMINAL) 73-223-760-01 LID, BATTERY CASE 83-227-729-01 TUNING, SPRING 93-223-763-01 KNOB (TUNING) 103-223-762-01 KNOB (VOLUME) ANT11-754-159-11 ANTENNA, TELESCOPIC (FM/SW) SP11-529-884-11 SPEAKER (9.2cm) #17-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT #27-623-508-01 LUG, 3 #37-685-548-14 SCREW +BTP 3X12 TYPE2 N-S #47-624-209-01 O RING, P-9 1 2 3 10 9 8 SP1 #4 #1 #2 #3 #3 not supplied ANT1 chassis section 4 5 6 7 17 RadioFans.CN 18 Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark 513-223-764-01 KNOB (POWER) 523-223-767-01 POINTER 533-223-772-01 PLATE, BACK 543-223-766-01 RACK * 553-223-758-01 CHASSIS 563-223-765-01 SLIDER 573-223-761-01 KNOB (BAND) 583-223-768-01 GEAR (TUNING CAPACITOR) 593-369-213-01 SPRING (GEAR) 603-369-208-01 GEAR (B), TUNING CAPACITOR 613-364-941-11 SCREW (+B) (2.6X5), NYLOK 623-223-759-01 HOLDER (GEAR) * 63A-3683-250-A MAIN BOARD, COMPLETE 643-223-770-01 GEAR, MIDWAY 653-223-769-01 SHAFT, TUNING D28-719-042-69 LED LN21RPL (TUNE) L11-754-132-11 ANTENNA, FERRITE-ROD (MW) #37-685-548-14 SCREW +BTP 3X12 TYPE2 N-S 52 53 51 65 54 55 L1 #3 D2 #3 56 57 64 58 59 60 61 62 63 (2)CHASSIS SECTION RadioFans.CN 19 SECTION 7 ELECTRICAL PARTS LIST Ref. No.Part No.DescriptionRemark NOTE: Due to standardization, replacements in the parts list may be different from the parts speci- fied in the diagrams or the components used