索尼SONY WM-FX822电路图.pdf

1 Tourist ModelSERVICE MANUAL WM-FX822 RADIO CASSETTE PLAYER Continued on next page SPECIFICATIONS Model Name Using Similar MechanismWM-EX510 Tape Transport Mechanism TypeMT-WMEX510-112 Radio section Frequency rangeFM (stereo) : 76.0 - 90 MHz AM (mono) : 531 - 1,710 kHz TV (mono): 1 -12 ch Tape player section and general Frequency response(a NR off) 20 - 18,000 Hz (EIAJ*) OutputHeadphones (2/REMOTE jack) load impedance 8 - 300 Power output4 mW + 4 mW (EIAJ, 16 ) DC1.5V Power requirementsRechargeable battery (NC-6WM) One R6 (size AA) battery Battery life (Approx. hours) DimensionsApprox. 108.5 x 78.6 x 23.0 mm (w/h/d) incl. projecting parts and controls (EIAJ) MassMain unit Approx. 145 g For use Appox. 240 g (incl. Stereo earphone with remote controller, rechargeable battery NC-6WM, tape C- 60HF) Design and specifications subject to change without notice. Using AC power Remove the rechargeable battery if inserted and attach the battery case and connect the AC power adaptor (AC-E15L or AC- E15HG) not supplied) to the DC IN 1.5V of the battery case and to the wall outlet. Do not use any other AC power adaptor. Dolby noise reduction manufactured under licence from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol 8 are trademarks of Dolby Laboratories Licensing Corporation. *(EIAJ) Electric Industries Association of Japan Polarity of the plug Rechargeable NC-6WM fully charged Playback5 Radio/TV reception7.5 Sony alkaline LR6 (WM) Playback16 Radio/TV reception24 Sony R6P (SR) Playback3.5 Radio/TV reception7 Ver 1.1 2002. 01 Sony Corporation Personal Audio Company Published by Sony Engineering Corporation 9-960-416-12 2002A1600-1 2002.1 ? ? ? ? ? ? ? ? ? ? ? 2 SAFETY-RELATED COMPONENT WARNING ! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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. TABLE OF CONTENTS Section Title Page SECTION 1. GENERAL .3 SECTION 2. SERVICE NOTE.4 SECTION 3. DISASSEMBLY 3-1.Bracket assembly and Cassette Holder assembly. 6 3-2.Audio Board . 6 3-3.Tuner Board . 7 SECTION 4. ADJUSTMENTS 4-1.Mechanical Adjustments . 8 4-2.Electrical adjustments . 8 SECTION 5. DIAGRAMS 5-1.Printed Wiring Board Tuner Section . 11 5-2.Schematic Diagram Tuner Section . 13 5-3.Schematic Diagram Audio Section . 17 5-4.Printed Wiring Board Audio Section . 21 5-5.IC Pin Functions IC701 MSM63120B System Control . 25 IC702 SMC62L3A LCD Driver . 26 SECTION 6. EXPLODED VIEWS 6-1.Case and Tuner Board Section . 28 6-2.Audio Board Section. 29 6-3.Mechanism Section (WM-EX510-112) . 30 SECTION 7. ELECTRICAL PARTS LIST.31 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. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. Receiving Stations Outside Japan 1Press BANDRADIO ON to turn on the radio. 2Press ENTER. The frequency digits, “PRESET” and a preset number flash in the display. 3Press BANDRADIO ON for more than 2 seconds. “AREA 1” flashes in the display. 4While “AREA 1” is flashing, press PRESET+/ repeatedly to select either area “USA” (USA and Canada) or “Eur” (Europe and other countries) and then press ENTER. 5Press ASP to store the radio stations (both AM and FM) automatically. The Walkman starts searching and storing stations. 6Press BANDRADIO ON to select the desired band and press PRESET+/ to select a station. ? ? ? ? ? ? ? ? ? ? ? 3 SECTION 1 GENERAL This section is extracted from instruction manual. PARTS IDENTIFICATION Tape Player and General sectionRadio section Accessories supplied LRLR 1OPEN knob 2Display window 3Terminal for a dry battery case 4Battery compartment lid (for the rechargeable battery) 5Tape operation buttons 6MENU (function select) botton 7SET (function change) botton 8BATT (battery) indicator 9Main unit : VOLUME knob Remote controller : VOL knob 0Main unit : Hold cover Remote controller : HOLD switch !2 REMOTE (Headphone with remote control unit) jack !Micro plug !DBB (dynamic bass boost)/ALARM botton 1ENTTER (input) button 2PRESET +, button 3ASP (Automatic Station Preset) button 4TUNE (tuning) +/ switch 5p RADIO OFF (stop/radio off) button 6BAND (FM/AM/TV band select) RADIO ON button 8 9 0 ! ! 5 0 ! 2 9 ! 1 2 3 4 5 6 7 5 6 5 4 6 2 1 2 3 Battery charger Rechageable battery Battery case Sony alkaline battery AM3 (SR) NC-6WM Stereo earphone Ear adaptors(2) Carrying case Clip (with Remote Controller)(If the earphones do not fit your ears, attach the ear adaptors.) Plug adaptor Instruction manual Leaf lets Warranty card ? ? ? ? ? ? ? ? ? ? ? 4 SECTION 2 SERVICE NOTE Service Mode Mode which enables the mechanism to be operated with the MAIN board opened. 1.Setting 1) Refer to “Disassembly” and remove the cabinet and open the MAIN board. 2) Connect the MAIN board to the motor and plunger using a jumper wire. Use “Extension tool (1-769-143-11) (one set 10 tools)” to make connection simple. 3) Short-circuit theTP52 and GND by soldering. 4) Turn OFF the BL SKIP switch. 5) Apply a square wave signal or a sine wave signal to TP52. (see the right figure) 6) Supply 1.3V to the battery terminals (+) and () using a stabilized power supply. 2.Preset State This state must be set to set the PLAY, FF, and REW modes. 1) Check that the lever (NR SW) is at the center and F/R switch (S701) is at the center. If not, set the preset state as follows. 2) Move the N/R switch (S701) according to the side faced by the lever (NR SW). 3) Turn OFF the stabilized power supply switch once and then turn it ON again so that the lever (NR SW) can be moved. Move the N/R switch (S701) according to this timing and set to the center. 3.FF REW Mode 1) Check the “2. Preset State” and press the FF switch and REW switch. 4.PLAY Mode 1) Check the “2. Preset State”. 2) Press the switch. The lever (NR SW) will move to the F side once and then to the R side. Move the N/R switch (S701) according to this timing to set the PLAY (R side) mode. Press the switch another time and move the N/R switch (S701) according to the movement of the lever (NR SW) to set the PLAY (N side) mode. Note 1: If the above cannot be performed, start again from preset. Note 2: Use the remote control , p, FF, and REW switches as much as possible. If the remote control is not available, do not touch switch with the hand and use something with a round tip to press them. Note 3: By using a headphone, the timing for moving S701 can be known by the beep. Lever (NR SW) Lever (NR SW) F side R side Center Side A Side B MAIN Board SQUARE WAVE (SINE WAVE) 10Hz, 3.5dB + AF oscillator 50K TP50 TO PLUNGER FF REW ND701 BATT TO MOTOR TP52 BATT IC702 N SIDER SIDE CENTER PH701 S701 ? ? ? ? ? ? ? ? ? ? ? 5 Rotation system Rotation system during PLAY. Rotation system during REW. Rotation system during FF. Gear (C) Pulley (REVERSE) Gear (A) Reel table (T side) Gear (B) Clutch assembly Reel table (S side) Motor pully Gear (NR) (REW : Left side/ FWD : Right side) Gear (K) Reel table (T side) Clutch assembly Gear (B) Gear (FR) (REW : Left side) Motor pully Gear (K) Gear (NR) Gear (A) Capstan wheel (N) assembly Pulley (REVERSE) Capstan wheel (R) assembly Gear (FR) (FF : Right side) Reel table (S side) Motor pully Clutch assembly Gear (K) Gear (C) Gear (NR) Capstan wheel (N) assembly Capstan wheel (R) assembly Capstan wheel (N) assembly Capstan wheel (R) assembly Pulley (REVERSE) ? ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. BRACKET ASSEMBLY AND CASSETTE HOLDER ASSEMBLY 3-2. AUDIO BOARD 1Screw (M1.4) 2Bracket assembly 3Screw (M1.4) 4Lever (B), Lock 5Screw (M1.4) 6Cassette holder assembly 1Remove the solder of the battery terminal. 3Remove the solder of the battery terminal. 2Remove the solder of the motor. 4Remove the solder of the switch (S901). 5Remove the solder of the flexible board. 6Remove the solder of the plunger solenoid. 7Flexible board (Head) 8Screw (M1.4x2.0) 9Screw (M1.4) S701 Lever (NR SW) 0Remove the Audio board direction of arrow. Note: Confirm if the switch lever installs itself in the groove of a lever (NR SW) for assembling. ? ? ? ? ? ? ? ? ? ? ? 7 1Remove the solder of the flexible board. 2Screw (M1.7x2.5) 3TU cover 4Screw (M1.7x2.5)5Tuner board 3-3. TUNER BOARD ? ? ? ? ? ? ? ? ? ? ? 8 SECTION 4 ADJUSTMENTS 4-1. MECHANICAL ADJUSTMENTS PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab : playback headrubber belts capstanpinch roller 2.Demagnetize the playback head with a head demagnetizer. 3.Do not use a magnetized screwdriver for the adjustments. 4.After the adjustments, apply suitable locking compound to the parts adjusted. 5.The adjustments should be performed with the rated power supply voltage (1.3V) unless otherwise noted. Torque Measurement ModeTorque MeterMeter Reading CQ-201Bmore than 60 g cm FWD FWD Back Tension CQ-102C REV CQ-102RC REV Back Tension FF REW 0.5 3 g cm 18 33 g cm 0.5 3 g cm 18 33 g cm Type WS-48A SignalUsed for 3 kHz, 0 dBTape Speed Adjustment 16 frequency counter + REMOTE jack set Test Tape WS-48A (3kHz, 0dB) 4-2. ELECTRICAL ADJUSTMENTS TAPE SECTION PRECAUTION 1.Power supply voltage : 1.3V. 2.Switch position DOLBY NR switch : OFF EX DBB switch : NORM Test Tape TAPE SPEED ADJUSTMENT Procedure : 1.Play back WS-48A (tape center portion) in FWD mode. Adjust the RV601 so that the frequency counter reads 3,000 30 Hz. 2.Play back WS-48A (tape center portion) in REV mode. Confirm that the reading of frequency counter is within 2.5% from the reading in step 1. Adjustment Part Location Diagram : MAIN BOARD (SIDE A) RV601 ND701 ? ? ? ? ? ? ? ? ? ? ? 9 TUNER SECTION FM SECTION Setting: FUNCTION switch: RADIO BAND switch: FM FM RF SSG 0.01F TP (ANT) TP (GND) Modulation : 400 Hz, 22.5 kHz dev. (30%) Output level: as low as possible. VTVM (AC : 0.55V range) 16 set REMOTE jack FM IF ADJUSTMENT Adjust for a maximum reading on VTVM. L576.00 MHz FM RF SSG 0.01F TP (ANT) TP (GND) Adjustment Element Frequency Display Frequency counter Reading RV178.00 MHz19.00 kHz 0.05 kHz VCO ADJUSTMENT Carrier frequency : 78.00 MHz Modulation: no-modulation Output level: 55 dB (562 V) TUNER BOARD TP (VCO) IC3 + frequency counter 150k ? ? ? ? ? ? ? ? ? ? ? 10 Digital voltmeter TP (VT) IC1 + AM RF SSG Put the lead-wire antenna close to the set. Modulation: 400 Hz, 22.5 kHz dev. (30%) Output level : as low as possible. VTVM (AC : 0.55V range) 16 set REMOTE jack AM IF ADJUSTMENT, AM TRACKING ADJUSTMENT Repeat the procedures in each adjustment several times, and the tracking adjustment should be finally done by the trimmer capacitors. Adjustment Part Location Diagram : TUNER BOARD IC2TP (GND) VCO ADJUSTMENT RV1 CT1 AM TRACKING ADJUSTMENT L6 AM TUNING VOLTAGE ADJUSTMENT T1 TP (ANT) FM IF ADJUSTMENT L5 AM IF ADJUSTMENT T2 AM IF ADJUSTMENT Adjust for a maximum reading on VTVM. T21395 kHz AM TUNING VOLTAGE ADJUSTMENT Adjust for a 1.20 0.03 Vdc reading on Digital voltmeter. T1531 kHz AM TRACKING ADJUSTMENT Adjust for a maximum reading on VTVM. L6621 kHz CT11395 kHz AM SECTION Setting : FUNCTION switch: RADIO BAND switch: AM AM TUNING VOLTAGE ADJUSTMENT ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 25 BEEP DDC CTL MUTE F/R CTL DOLBY CTL DBB ON/OFF DBB MID/MAX AVLS CTL PRE AMP CTL AMP CTL REC CTL PHOTO CTL LED CTL PL CTL M-CTL M-DIR M-BRK TEST OSC2 OSC1 VDD XTB XT VSS1 VSS2 VCM VCP VSSL HALL1 HALL2 KEY1 KEY2 FOREIGN/JAPAN A/B HOLDER FWD SW REV SW RMUM RQT DRQT Beep signal output (TC system=1.6 kHz, CF system=3.0 kHz) ON/OFF control output of DC-DC converter and amplifier (when DDC on=L) Audio muting control output (when MUTE ON=L) Head select output (when FWD=H, when REV=L) DOLBY ON/OFF control output (when DOLBY ON=L) Tone control output (when DBB ON=H) Tone control output (when DBB ON=L) AVLS ON/OFF con