sony_wm-ex615_ver-1.0.pdf

WM-EX615 US Model AEP Model UK Model Chinese Model Tourist Model SERVICE MANUAL CASSETTE PLAYER Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. SPECIFICATIONS Model Name Using Similar MechanismNEW Tape Transport Mechanism TypeMT-WMEX610-162 Frequency response (Dolby NR off) Playback: 30 - 18 000 Hz Output Headphones (i jack) Load impedance 8 - 300 Power requirements 1.5 V Rechargeable battery One R6 (size AA) battery Dimensions (w/h/d) Approx. 77.1 108.6 20.6 mm Mass Approx. 160 g Supplied accessories Battery case (1) Stereo headphones or earphones with remote control (1) Battery charger (1) Rechargeable battery (NC-6WM, 1.2 V, 600 mAh, Ni-Cd) (1) Carrying pouch (1) Rechargeable battery carrying case (1) Design and specifications are subject to change without notice. Ver 1.0 2000.10 2 TABLE OF CONTENTS 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 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. 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. 1. SERVICE NOTE 3 2. GENERAL 5 3. DISASSEMBLY 3-1. CASE SUB ASSY 7 3-2. MAIN BOARD 8 3-3. BELT (F4) 8 3-4. MOTOR (M901) 9 3-5. LID ASSY, CASSETTE 9 3-6. ORNAMENT, REEL 10 3-7. HOLDER (FS) ASSY 10 3-8. LEVER (NA)/(RA) ASSY, PINCH 11 3-9. HEAD, MAGNETIC (HP901) 11 4. MECHANICAL ADJUSTMENT 12 5. ELECTRICAL ADJUSTMENT 12 6. DIAGRAMS 6-1. BLOCK DIAGRAM 13 6-2. IC BLOCK DIAGRAMS 15 6-3. PRINTED WIRING BOARD 16 6-4. SCHEMATAC DIAGRAM19 6-5. IC PIN FUNCTION 22 7. EXPLODED VIEWS 7-1. CABINET BLOCK, MAIN BOARD 24 7-2. MECHANISM DECK BLOCK 25 8. ELECTRICAL PARTS LIST26 3 SECTION 1 SERVICE NOTE Service Mode The service mode enables to operate the mechanism of WM-EX615 while the MAIN board is opened. Rotation of the idler gear (A) (S side) is detected using the photo- reflector (PH701) in the WM-EX615. PH701 is located on the MAIN board, therefore the rotation of the idler gear (A) (S side) cannot be detected by PH701 when the MAIN board is removed. As a result, the motor cannot be controlled and cannot run correctly. To repair the machine after the MAIN board is removed while the main power is turned on, follow the procedures as described below. 1. Setting 1)Remove the cabinets referring to section “3. DISASSEMBLY”. Open the MAIN board. 2)Connect the motor (M901) and the plunger solenoid (PM901) to the MAIN board using the jumper wires. When the extension jig (1-769-143-11) (10 wires as a set) is used, they can be connected easily. 3)Short the TAPE DETECT switch (S901-1) and the ATS switch (S901-2). 4)Connect an AF oscillator to TP53 (P. IN) and TP14 (GND). 5)Connect DC 1.3 V from external regulated power supply to and terminals of the battery. 2. PRE-SET status The PLAY, FF and REW modes can be entered only from the PRE- SET status. 1)Check that the slider (NR) is in the center position (S701), and the FWD/REV switch is also in the center position. When these switches are not in the center position, set them to the PRE-SET status as follows. 2)Move the FWD/REV switch (S701) to the same position as the slider (NR) is set. 3)The slider (NR) can be moved when the main power of the regulated power supply is turned OFF once then back ON. Move the FWD/REV switch (S701) to the center position in synchronism with the timing when the slider (NR) is moved. 3. FF, REW modes 1)Check that the PRE-SET status is set. 2)Connect square wave or sine wave to TP53 (P. IN) and TP14 (GND). (See illustration below.) 3)Press the x switch (S702) to enter the STOP mode. 4)Press the FF AMS switch (S704) and the REW AMS switch (S705). 4. PLAY mode 1)Check that the PRE-SET status is set. 2)Connect square wave or sine wave to TP53 (P. IN) and TP14 (GND). (See illustration below.) 3)Press the x switch (S702) to enter the stop mode. 4)When the nN switch (S703) of the MAIN board is pressed, the slider (N/R) moves once to the F side then moves to the R side. When the FWD/REV switch (S701) is pressed in the synchronism with the above timing, the machine can enter the PLAY (R side) mode. Press the nN switch (S703) again, and move the FWD/REV switch (S701) in the synchronism with the motion of slider (NR). It enables the machine to enter into the PLAY (F side) mode. Note 1: When you fail to enter the PLAY mode, re-start from step 1) PRE-SET status. Note 2: Regarding the nN (S703), x (S702), FF AMS (S704), and REW AMS (S705) switches, use these switches of the remote control unit as much as possible. Note 3: If a headphones are used, the beep sound shows the timing of the FWD/REV switch (S701). MAIN BOARD (SIDE B) TAPE DETECT SWITCH (S901-1) ATS SWITCH (S901-2) Short Plunger (PM901) AF OSC Battery terminal Battery terminal TP14 (GND) S701 FWDSTOPREV REPEAT (S703) p(S702) PH701 M901 TP53 (P.IN) REW AMS (S705) FF AMS (S704) M + Square-wave (sine wave) 10 Hz, -3.5 dB 4 Slider (NR) Tape drive mechanism Tape drive mechanism in PLAY mode Tape drive mechanism in FF modeTape drive mechanism in REW mode Slider (NR) Center F side R side Insert Flywheel (N) Pulley (Reverse) Clutch Assy Motor Pulley Gear (REEL)(S side)Gear (REEL)(T side) Gear (NR) (FWD : Left side REV : Right side) Idler Gear Idler Gear (A)(S side) Idler Gear (A)(T side) Insert Flywheel (R) Cam Gear Gear (Y) Insert Flywheel (N) Pulley (Reverse) Clutch Assy Motor Pulley Gear (REEL)(T side) Idler Gear (A)(T side) Insert Flywheel (R) Cam Gear Gear (Y) Gear (FR) (FF : Left side) Insert Flywheel (N) Pulley (Reverse) Clutch Assy Motor Pulley Gear (REEL)(S side) Idler Gear (A)(S side) Insert Flywheel (R) Cam Gear Gear (Y) Gear (FR) (REW : Right side) 5 SECTION 2 GENERAL This section is extracted from instruction manual. B CA BATT UK, Australian, and Hong Kong model Other models EX615 EX610 BATT x FFCUE REWREVIEW HOLD VOL BATT YREPEAT OPEN ii Yx VOL REW () HOLD FF (+) x FFCUE (AMS) HOLD VOL BATT YREPEAT OPEN REWREVIEW (AMS) SOUND MODE Plug in firmly. 1 2 3 4 EX615 EX610 REV FWD 6 Preparations Prepare a dry battey (not supplied) or the rechargeable battery (supplied). Dry Battery A Attach the supplied battery case, and then insert one R6 (size AA) battery with correct polarity. Note For maximum performance we recommend that you use a Sony alkaline battery. Rechargeable Battery B 1Insert the supplied rechargeable battery (NC-6WM) into the charger with correct polarity. 2Plug in the charger to the house current (mains). UK, Australian, and Hong Kong model: Full charging takes about 3.5 hours. U.S.A., Canada, European Continent and Saudi Arabian model: Full charging takes about 2.5 hours. Korean model: The full charging time depends on the voltage of your mains. 110 V: 10 hours 220 V: 2.5 hours Other models: The full charging time depends on the voltage of your mains. 120 V: 10 hours 220 240V: 2.5 hours 3Insert the fully charged battery into the rechargeable battery compartment. You can charge the battery about 300 times. When to replace/charge the battery C Replace or charge the battery when “e” flashes in the display on the remote control and the BATT lamp on the main unit goes out. Note After the battery is replaced, the setting of the SOUND and MODE buttons will be erased. Playing a Tape 1 Insert a cassette and if the HOLD function is on, slide the HOLD switch in the opposite direction of the arrow to unlock the controls. 2 Press Y(play)x(stop) on the remote control and adjust the volume with VOL. (On the main unit, press YREPEAT.) When adjusting the volume on the main unit Set the VOL control on the remote control at maximum. When adjusting the volume on the remote control Set the VOL control on the main unit to around 6. Operation on the remote control To Switch playback to the other side Stop playback Fast forward* Rewind* Repeat the current track (Repeat Single Track function) Operation on the main unit To Switch playback to the other side Stop playback Fast forward* Rewind* Repeat the current track (Repeat Single Track function) * If Yx on the remote control is pressed during fast forward or rewind, the Walkman switches to playback. Other tape operations Use the FF/REW buttons on the remote control, or FFCUE (AMS)/REWREVIEW(AMS) on the main unit. To Fast forward while listening to the sound (CUE) Rewind while listening to the sound (REVIEW) Play the next track/ succeeding 9 tracks from the beginning (AMS*) Play the current track/ previous 8 tracks from the beginning (AMS*) Play the other side from the beginning (Skip Reverse function) Play the same side from the beginning (Rewind Auto Play function) * Automatic Music Sensor Using Other Functions Adjusting Playback Mode You can adjust the playback direction mode (s or d) as well as the BL SKIP mode (on or off). 1Press MODE repeatedly. With each press the indications change as follows: s v s BL SKIP v d v d BL SKIP When “BL SKIP” is displayed, the tape is fast- forwarded to the next track if there is a blank space of longer than 12 seconds. You will hear repeated sets of three short beeps when skipping a blank. When “s” is displayed, both sides of the tape is played repeatedly. When “d” is displayed, both sides of the tape is played once (if you start from R (REV) side, only REV side will be played). Note You cannot adjust the playback mode during fast- forward or rewind. Playing a Tape Recorded with the Dolby* B NR System Hold down SOUND until “;” appears in the display. To cancel Dolby B NR, hold down SOUND again until “;” disappears. * Manufactured under license from Dolby Laboratories. “Dolby”and the double-D symbol are trademarks of Dolby Laboratories. Note You cannot turn on/off the Dolby B NR function during fast-forward or rewind. Emphasizing Sound 1Press SOUND repeatedly. With each press, the indications change as follows: RV (Sound Revitalizer): emphasizes treble sound MB (Mega Bass): emphasizes bass sound (moderate effect) GRV (Groove): emphasizes bass sound (strong effect) none: normal (no effect) Notes If the sound is distorted with the mode “GRV”, turn down the volume of the main unit or select other modes. You cannot change the mode during fast-forward or rewind. Protecting Your Hearing AVLS (Automatic Volume Limiter System) Hold down MODE until “AVLS” appears in the display. To cancel the AVLS function, hold down MODE again until “AVLS” disappears. Note You cannot turn on/off the AVLS function during fast- forward or rewind. Locking the Controls HOLD Function Slide the HOLD switch in the direction of the arrow to lock the controls of the Walkman or the remote control. Press Yx more than a second during playback Yx once during playback FF during stop REW during stop Yx twice during playback To stop a single repeat, press Yx once B Press YREPEAT during playback x FFCUE during stop REWREVIEW during stop YREPEAT for 2 seconds or more during playback To stop a single repeat, press it again. Press Press and hold FF during playback and release it at the point you want. Press and hold REW during playback and release it at the point you want. FF once/repeatedly during playback REW once/repeatedly during playback FF for 2 seconds or more during stop REW for 2 seconds or more during stop 7 SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure as shown in the flow chart below. 3-1. CASE SUB ASSY Note : Follow the disassembly procedure in the numerical order given. 1 Claw Lid, battery case 5 Remove the case sub assy in the direction of the arrow. 4 Two screws (M1.4 2.5) 2 Screw (M1.4 2.5) 3 Two screws (M1.4 2.5) knob (HOLD) S707 Note: When assembling the case sub assy, align the knob (HOLD) with the position of S707. Case sub assy Lid assy, cassette Ornament, reel SetBelt (F4) Holder (FS) assy Main board Head, magnetic (HP901) Lever (NA)/(RA) assy, pinch Motor (M901) 8 3-2. MAIN BOARD 3-3. BELT (F4) 2 Terminal board (Battery) 3 Belt (F4) 1 Remove soldering from the battery terminal board. Claw 6 Screw (M1.4) 3 Remove soldering (two points) from plunger solenoid. 1 Remove soldering (six points) from the head flexible boards. Head flexible board 2 Remove soldering (four points) from the leaf switch. 4 Remove soldering (four points) from motor. 5 Two Screws (M2.0) 7 MAIN board Note : Be careful of the claw. SLIDER S701 Note: When assembling the MAIN board, align the slider with the position of S701. 9 3-4. MOTOR (M901) 3-5. LID ASSY, CASSETTE 1 Two screws (M1.4) 2 Motor (M901) 2 Two screws (M1.4 2) 1 Screw (P1.4 2) 5 Lid assy, cassette 3 Open the cassette lid. 4 Shaft 10 3-6. ORNAMENT, REEL 3-7. HOLDER (FS) ASSY Claw 1 Ornament, reel Note : Remove the assembly while removing the 5 claws and the boss carefully. Boss Claw Claw Claw Claw 1 Two screws (M1.4 1.4) 3 Lock Lever (B) 8 Remove soldering from six head flexible boards. 2 Shaft 6 Shaft 9 Remove the holder (FS) assy in the direction of the arrow. 7 Bracket (cassette) assy 5 Lock Lever (S) 4 Screw ( M1.4) 11 3-8. LEVER (NA)/(RA) ASSY, PINCH 3-9. HEAD, MAGNETIC (HP901) Claw Claw 1 Remove the pinch lever (RA) assembly in the direction of the arrow. Note : Be careful of the claw. 2 Remove the pinch lever (NA) assembly in the direction of the arrow. Note : Be careful of the claw. Claw 1 Remove the head, magnetic (HP901) in the direction of the arrow. Note : Be careful of the claw. 12 PRECAUTION 1.Specified voltage: 1.3 V (DC) 2.Switch position (MENU) aNR: OFF AVLS: OFF BL SKIP: OFF MB/RV GRV: OFF Test Tape Tape Speed Adjustment Procedure: 1.Enter the FWD playback mode. 2.Adjust RV601 so that the value of the frequency counter reading becomes 3,000 Hz. Specification value: Frequency counter 2,970 Hz 3,030 Hz 3.Check that the frequency deviation at the beginning and ending of a tape is within 1.5 % (45 Hz). Adjustment Point: MAIN BOARD SIDE B PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab: playback headpinch roller rubber beltscapstan 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 unless otherwise noted. Torque Measurement Mode FWD FWD Back Tension REW REW Back Tension FF, REW Torque Meter CQ-102D CQ-102D CQ-102C CQ-102C CQ-201B Meter Reading 15 to 25 gcm (0.22 to 0.34