sony_wm-ex9.pdf

1 Model Name Using Similar MechanismNEW Tape Transport Mechanism TypeMF-WMEX9-162 SERVICE MANUALUS Model AEP Model UK Model E Model Tourist Model WM-EX9 CASSETTE PLAYER SystemCompact cassette stereo Frequency response (Dolby NR off) Playback: 30 - 18,000 Hz OutputHeadphones 2 jack Load impedance 8 - 300 ohms Maximum output level4 mW + 4 mW (32 ) Power requirementsDC 1.5 V Nickel metal hydride rechargeable battery (supplied) One R6 (size AA) batteries (negative ground) Battery life (Approx. hours) Rechargeable NH-14WM40 fully charged Rechargeable NC-6WM18 fully charged Sony alkaline LR6 (WM)60 Rechargeable NH-14WM100 Sony alkaline LR6 (WM) used together Rechargeable NC-6WM78 Sony alkaline LR6 (WM) used together Dimensions (w/h/d)Approx. 77.7 108 19.6 mm (3 1/8 4 3/8 25/32 in.) projecting parts and controls MassApprox. 140 g / Approx. 205 g (5.0 oz/ 7.3 oz) incl. rechargeable battery and a cassette SPECIFICATIONS Dolby noise reduction manufactured under license from Dolby Labo- ratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. MICROFILM Photo: Gold type Ver 1.1 1999. 01 Supplied accessoriesBattery charger BC-7DC (1) (US model) Battery charger BC-7DY (1) (AEP, French model) Battery charger BC-7HT (1) (E, Tourist model) Battery charger BC-7S (1) (UK model) Battery charger BC-9HR (1) (Korea model) Rechargeable battery NH-14WM (1) (E, Tourist, Korea model) Rechargeable battery NC-6WM (1) (Except E, Tourist, Korea model) Rechargeable battery case (1) Dry battery case (1) Stereo headphones with remote control MDR-ED132SP + RM-WME21L (1) Carrying pouch (1) AC plug adaptor (1) (E, Tourist model) Design and specifications are subject to change without notice. Ver 1.1 1999. 01 2 TABLE OF CONTENTS 1. SERVICING NOTE 1-1. Service Mode . 3 1-2. Rotational System . 4 2. GENERAL Location of controls. 5 3. DISASSEMBLY 3-1. Cassette Lid Assy . 6 3-2. Case . 6 3-3. Ornament (Open) Block Assy . 7 3-4. SUB Board, Leaf Switch, MAIN Board . 7 3-5. Belt (F1), Motor (F1) (M701) . 8 4. MECHANICAL ADJUSTMENTS.9 5. ELECTRICAL ADJUSTMENTS .9 6. DIAGRAMS 6-1. IC Pin Description. 10 6-2. Block Diagram . 11 6-3. Printed Wiring Boards (Board suffix No. : -11).13 6-4. Printed Wiring Boards (Board suffix No. : -12).16 6-5. Schematic Diagram .19 7. EXPLODED VIEWS 7-1. Case Section. 24 7-2. Mechanism Deck Section. 25 8. ELECTRICAL PARTS LIST.26 Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C 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. 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. 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. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 3 F side flywheel slider (NR) F side centerR side SECTION 1 SERVICING NOTE 1-1. SERVICE MODE Mode to allow the mechanical parts to operate with the audio board open. This set uses the photo reflector PH701 to detect the rotation of the idler gear (A) (S side). PH701 is on the main board and so removal of the main board does not allow the set to detect the rotation of the idler gear (A) (S side). This makes motor control impossible which prevents normal operation. When repairing the set as energized with the main board removed, proceed as follows: 1. Setting 1) Remove the case (refer to the Disassembly) and open the main board. 2) Connect the motor and plunger to the main board with jumper wire. The extension jig (1-769-143-11) (one set of ten wires) can be used for easy connection. 3) Short the TAPE IN switch land (BP701) with solder. Input a square (or sine) wave of 10 to 100 Hz (at 1.3 V) to both PH IN T land (TP60) and PH IN S land (TP61) with jumper wire. 4) Supply 1.3 V to the positive and negative terminals of the battery with a stabilized power supply. 2. Preset state The set must be in this state before the PLAY, FF and REW modes can be entered. 1) Make sure that the slider (NR) is in the center position and that the N/R switch (S701) is in the center position. Make sure that the reel gear does not rotate by rotating the flywheel on the F side clockwise. If improper, place the set in the preset state according to the following instructions: 2) Repeat the step below some times to ensure the above conditions. * Pull away the trigger level from the plunger with twezers or other means. Then rotate the flywheel on the F side clockwise. 3) Turn the stabilized power supply OFF once and then ON. 3. FF/REW mode 1) Check for “2. Preset state” and push the FF switch and the REW switch. 2) Move the N/R switch (S701) to the movement of the slider to enter the FF/REW mode. 4. PLAY mode 1) Check for “2. Preset state.” 2) Push the “ ” switch on the remote commander to move the lever (SW) toward the R side. With timing to this, move the N/R switch (S701) to enter the PLAY (R side) mode. Note 1: If failed, retry from the preset state. Note 2: The “ ”, p, FF and REW switches on the remote commander should be used whenever possible. main board (side A) main board (side B) mechanism deck BP701 PH IN T PH IN S S701 IC601IC701 F side center R side 4 1-2. ROTATIONAL SYSTEM 1. Rotational System of PLAY Mode2. Rotational System of FF Mode 3. Rotational System of REW Mode motor pulley gear (FR) gear (reel) (S side) reverse pulley insert flywheel (R) insert flywheel (N) idler gear (A) (S side) gear (Y) clutch assy (F) motor pulley reverse pulley insert flywheel (R) insert flywheel (N) gear (reel) (T side) gear (reel) (S side) idler gear (A) (T side) idler gear (A) (S side) idler gear (B) gear (Y) gear (NR) FWD REV clutch assy (F) motor pulley gear (FR) reverse pulley insert flywheel (R) insert flywheel (N) gear (reel) (T side) idler gear (A) (T side) gear (Y) clutch assy (F) 5 SECTION 2 GENERAL Main unit Location of controls Stereo headphones with remote control L (left)R (right) 1 VOL (volume) knob 2 2 REMOTE (headphone remote control) jack 3 Operation button 4 OPEN/HOLD/OPERATION switch 5 Dry battery case contact 6 Rechargeable battery compartment 7 HOLD switch 8 Liquid crystal display window 9 Stereo mini-plug ! MENU button ! Jog lever ! Clip 6 SECTION 3 DISASSEMBLY The equipment can be removed using the following procedure. Note : Follow the disassembly procedure in the numerical order given. 3-1. CASSETTE LID ASSY Cassette Lid Assy CaseOrnament (OPEN) Block Assy Sub Board, Leaf Switch, Main Board Belt (F1), Motor (F1) (M701) Set 3-2. CASE 2 screw (M1.4x2.2) 4 cassette lid assy 3 screws (M1.4x2.2) 1 4 screw (M1.4x1.6) 5 screws (M1.4x2.2) 7 mechanism deck block 8 case 6 2 screw (M1.4x2.2) 3 screw (M1.4x2.2) 1 battery case lid 7 3-3. ORNAMENT (OPEN) BLOCK ASSY 3-4. SUB BOARD, LEAF SWITCH, MAIN BOARD 1 ornament (open) block assy mechanism deck block 3 screw (M1.4x1.4) 5 screw (M1.4) 6 SUB board 2 screw (M1.4) ! MAIN board 1 screw 4 Unsolder the 6 places. ! Unsolder the motor. 9 Unsolder the plunger. 0 Unsolder the flexible board. ! claw 7 screw (M1.4) 8 leaf switch 8 3-5. BELT (F1), MOTOR (F1) (M701) 2 screws (M1.4) 4 motor (F1) (M701) 3 motor base (F1) 1 belt (F1) 9 10 test tape WS-48A (3 kHz, 0 dB) set 32 2 jack digital frequency counter PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab : playback headpinch roller capstanrubber belt 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 (1.3 V) unless otherwise noted. Torque Measurement ModeTorque MeterMeter Reading 15 25 g cm FWD CQ-102C (0.21 0.35 oz inch) FWDless than 2 g cm back tension(less than 0.03 oz inch) 15 25 g cm REV CQ-102RC (0.21 0.35 oz inch) REVless than 2 g cm back tension(less than 0.03 oz inch) more than 50 g cm FF, REWCQ-201B (more than 0.69 oz inch) SECTION 5 ELECTRICAL ADJUSTMENTS SECTION 4 MECHANICAL ADJUSTMENTS PRECAUTION Supplied voltage : 1.3 V Switches and control position VOL switch: NORM Remote control position HOLD switch : OFF VOL control: MAX SOUND mode : NORM DOLBY mode : OFF Test Tape TypeSignalUsed for WS-48A3 kHz, 0 dBtape speed adjustment Tape Speed Adjustment Procedure : 1.Playback WS-48A (tape center part) in the REV state and adjust RV601 so that the digital frequency counter reading becomes3,000 Hz. Specification Value : Digital frequency counter 2,985 to 3,015 Hz 2.Playback WS-48A (tape center part) in the FWD state. Check that digital frequency counter reading is within 2.5% of reading of step 1. Adjustment Location : RV601 SECTION 6 DIAGRAMS 6-1. IC PIN DESCRIPTION IC701 ML63514-017 (SYSTEM CONTROL) Pin No.Pin NameI/OPin Description 1A/B SWISide A/B detection switch signal input. L: side A, H: side B 2FWD SWIMD mode switch (FWD) signal input. L: ON 3CEN SWIMD mode switch (CENTER) signal input. L: ON 4RVS SWIMD mode switch (RVS) signal input. L: ON 5CASSETTE SWICassette with/without detection switch signal input. L: with, H: without 6DATA/RMUMI/OCommunication data signal output, Remote control with/without detection signal input. 7REVIVE CTLOTone select switch signal output. H: REVIVE, L: MEGA BASS/GROOVE 8MEGA BASS CTLOTone select switch signal output. H: MEGA BASS, L: OFF/GROOVE 9F/R CTLOHead select signal output. L: FWD, H: RVS 10BOOST CTLOTone select switch signal output. H: BOOST ON, L: OFF 11AMP CTLOAudio circuit DDC control signal output. H: POWER ON 12MUTE CTLOAudio muting control signal output. L: MUTE ON 13SET STOP1ISet stop voltage signal input 14SET STOP2ISet stop reference voltage signal input 15BATT DETIPower voltage detection signal input 16KEY INIOperation switch signal input 17PM CTLOPlunger control signal output. L: ON 18PHOTO (T) CTLORotational detection intermittent signal output. (Take-up side) L: ON 19PHOTO (S) CTLORotational detection intermittent signal output. (Supply side) L: ON 20DOLBY CTLODolby circuit control signal output. L: ON 21VDD1Power supply pin. (for external interface) 22VSSGround 23VDDPower supply pin 24VDDHBackup increased voltage power supply pin 25CB1Increased power supply capacitor connection pin 26CB2Increased power supply capacitor connection pin 27VDDLInternal logic positive side power supply pin 28XT0ICrystal oscillator connection pin. (32.768 kHz) 29XT1OCrystal oscillator connection pin. (32.768 kHz) 30TEST1BITest input pin. (Connect to power supply pin.) 31TEST2BITest input pin. (Connect to power supply pin.) 32OSCMNot used. (Open) 33OSC0IHigh speed CR oscillation (800 kHz) resistor connection pin 34OSC1OHigh speed CR oscillation (800 kHz) resistor connection pin 35RESETIReset signal input 36BEEPOBeep signal output 37PHOTO (S) INIRotational detection signal input 38PHOTO (T) INIRotational detection signal input 39AMS INIMusic with/without detection (AMS) signal input. (External interruption) H: without 40P SIGIMotor P-SIG signal input. (External interruption) 41MOTOR STARTOMotor wake-up signal output. L: wake-up 42MOTOR DIROMotor rotational direction control signal output. H: CCW, L: CW 43CLRL 2OMode select signal output to Motor servo IC (IC601). 44CLRL 1OMode select signal output to Motor servo IC (IC601). 45MOTOR WOMotor control signal output 46MOTOR VOMotor control signal output 47MOTOR UOMotor control signal output 481/2OMotor speed 1/2 control signal output. L: 1/2 high speed, H: normally 11 12 WM-EX9 6-2. BLOCK DIAGRAM AMS IN BEEP BOOST CTL F/R CTL DOLBY CTL MEGA BASS CTL REVIVE CTL XTO XTI CASSETE SW MUTE CTL PHOTO (T) CTL PHOTO (T) IN 39 36 20 8 7 10 9 28 29 5 12 18 38 PHOTO (S) IN37 PHOTO (S) CTL19 1/248 MOTOR START41 MOTOR U47 MOTOR V46 MOTOR W45 CTRL 144 CTRL 243 MOTOR DIR42 P SIG40 X701 32.768kHz M/N CONTROL Q703 PRE OUT CONTROL Q102 PRE OUT CONTROL Q202 DOLBY REG Q305 MB & RV CONTROL Q303 PLUNGER DRIVER Q701 RESET IC704 REVIVE CONTROL Q302 RIPPLE FILTER VOL MAX SW Q103,203 VOL MIN SW Q104,204 RIPPLE FILTER Q301 METAL SW Q101,201 EQ AMP CTL FOR METAL Q306 T REEL SENS PH702 MOTOR SW Q601 -1 (TAPE IN) -2 (ATS) 15 19 10 4139 4042434446 S REEL SENS PH701 1/2 SPEED SW Q604 MOTOR START SW Q602 Q702 (1/2) Q702 (2/2) RV601 TAPE SPEED 21 30 29 28 S704 16 17 15 1 36 354 5 6 7 8 9 10 31 32 34 19 2 MOTOR SERVO IC601 9 11 13 2 4 6 8 10 12 1 3 5 MOTOR SW Q603 1168 1 2 SWITCH SWITCH BEEP M/N F/R BST PW MT AMS DET VCC PRE OUT R PRE OUT L + + 7 5 4 3 AUDIO AMP IC301 (1/2) VREF FWD L FWD R REV L REV R L R L R REF V ICI1 VI1 VI2 IV U IN V IN W IN CTRL 1 CTRL 2 DIR PSIG UT VT WT UT VT WT WS VS US TU TW TV TU TW TV W V U W V U C 04 WS VS US W OUT V OUT U OUT MCENTER MC B+ (+1.5V) SYSTEM CONTROL IC701 DATA/PMUM6 PM CTL17 RESET35 A/B SW1 FWD SW2 CEN SW3 RVS SW4 KEY IN16 BATT DET15 AMP CTL11 B+ (+1.5V) VREF 11 4 10 14 5 DOLBY AMP IC302 VCC B+ (+2.5V) B+ (+2.5V) S301 VOL AVLS MIN NORM MAX PW IN C PW IN R PW IN L PW NF R PW NF L 29 26 32 27 28 21 35 22 20 + + PW OUT L PW OUT R 18 17 BASE RF OUT PW OUT C AGC IN AUDIO AMP IC301 (2/2) PM701 PLUNGER B+ (+1.5V) S701 (N/R) FWD CENTER RVS S702 (A/B) S703 HOLD 1 2 3 4 7 8 OUT1 OUT2 OUT3 OUT4 CE VCC VOLTAGE DETECT IC702 CELX V OUT B+ (+1.5V) 15 2 DC/DC CONVERTER IC703 B+ (+1.5V) B+ (+2.5V) RECHAGEABLE BATTERY NH-14WM 1.2V 1400mAh DC IN 1.5V BATTERY CASE DRY BATTERY SIDE AA (IEC DESIGNATION R6) 1PC, 1.5V GND REMO DATA VCC J301 REMOTE CAPSTAN /REEL MOTOR M7