Sony wm we 1 service manual

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Ð 2 Ð TABLE OF CONTENTS 1. SERVICE NOTE ....................................................... 2 2. GENERAL ................................................................... 5 3. DISASSEMBLY ......................................................... 6 4. MECHANICAL ADJUSTMENT .......................... 11 5. ELECTRICAL ADJUSTMENT ............................ 11 6. DIAGRAMS 6-1. Block Diagram ................................................................ 13 6-2. Schematic Diagram ÐMAIN Section Ð ........................... 15 6-3. Printed wiring Board ÐMAIN Section Ð ......................... 19 6-4. Printed wiring Board Ð TMR Section Ð .......................... 22 6-5. Schematic Diagram Ð TMR Section Ð ............................ 25 6-6. IC Pin Function Description ........................................... 29 7. EXPLODED VIEWS ................................................ 30 8. ELECTRICAL PARTS LIST ............................... 33 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. Flexible Circuit Board Repairing ·Keep the temperature of the soldering iron around 270 ûC dur- ing 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 ! 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 PUB- LISHED BY SONY. SECTION 1 SERVICE NOTE Service Mode Mode for operating the mechanism section with the MAIN board and TMR board opened. 1. Setting 1) Refer to Ò3. DisassemblyÓ, and remove the cabinet and open the MAIN board and TMR board. 2) Connect the motor and plunger to the MAIN board using jumper wires. These can be connected easily with the use of the extension tool (1-769-143-11) (ten in one set). 3) Turn OFF the[BLÊSKIP]switch (S703). 4) Connect the MAIN board to the TMR board using flexible board for service only. 5) Press theÏREPEAT switch (S3), [FF] switch (S2) and supply 1.2V to the �- and Õ terminals of the battery using a regulated power supply. 2. Preset state To set the PLAY, FF, REW modes, the preset state must be set. 1) Check that the lever (SW) and F/R switch (S702) are set to the center position. If not, set the preset state as follows. 2) Move the F/R switch (S702) to the side which the lever (SW) is facing. 3) The lever (SW) will move when the regulated power supply switch is set to OFF once and then set to ON. Move the F/R switch (S702) according to this timing and set to the center position. 3. FF, REW Modes 1) Check that the preset state is set and press the [FF] and [REW] switches. 4. PLAY mode 1) Check that the preset state is set. 2) Pressing the ÏREPEAT switch on the keyboard unit will move the lever (SW) once towards the F side and then to the R side. Moving the F/R switch (S702) according to this timing will set the PLAY mode (R side). Pressing the ÏREPEAT switch another time and moving the F/R switch (S702) ac- cording to the movement of the lever (SW) will set the PLAY (F side) mode. Note 1:If the above fails, perform from preset again. Note 2:Do not touch the Ï, p, FF, REW switches with your hands, but using a stick with a round tip. Note 3:When using headphones, the timing for moving the S702 can be determined from the beep sound.

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Ð 3 Ð Connect to plunger S702 F/R Switch (FWD nSTOP nREW) Center Connect to motor Battery terminal (+)Battery terminal (-�) Flexible board for service only Side F -�N n Side R IC701 IC301 CN1 MAIN Board Ñ Side B Ñ TMR Board Ñ Side A Ñ Lever (SW) senter lever (SW) side Rside F Precaution When act repair, take the main unit and wireless receiver of a cus- tomer, because rewriting ID code to some parts replacement. After repair check the main unit action control from the wireless receiver. Rewriting ID Code The main unit action control from the wireless receiver in this set. Make a 14 ID codes (0001 ~ 1110) and each set include, because protecting wrong action from another set operation signals. The ID code rewrite to wireless receiver replacement and EEPROM (IC704) replacement (Lost of ID code data.) Method 1. Turn ON the WIRELESS switch (S704) of main unit. (Don't connect to headphones.) 2. Press the two buttonspand [REW] simultaneously and the LED light of main unit. 3. Straighten headphones cord and press continue Ï REPEAT button, then LCD displays ID code. (4 figure, 0 or 1 charac- ters.) 4. Battery remove, the ID code rewriting complete. 5. After repair check the action. Check ID code main units 1. Turn ON the WIRELESS switch (S704) of main unit. (Don't connect to headphones.) 2. Straighten headphones cord and close the main unit. 3. Press the two buttonspand [FF] simultaneously and the LED light ON of main unit, then pressÏREPEAT button and LCD displays main units ID code of wireless receiver. Check ID code wireless receivers 1. Press continue [CH] button, and insert battery of wireless re- ceiver 2. LCD displays wireless receivers ID code.