索尼SONY WM-EX910电路图.pdf
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1、SERVICE MANUAL Ver 1.0 2000. 10 CASSETTE PLAYER E Model Chinese Model SPECIFICATIONS WM-EX910 Photo: Blue model Manufactured under license from Dolby Laborato- ries. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories. Model Name Using Similar MechanismNEW Tape Transport Mechanism T
2、ypeMT-WMEX910-162 Battery life (Approx. hours) (in playback) (EIAJ*) Rechargeable NC-6WM20 fully charged Sony alkaline LR6 (SG)*66 Rechargeable NC-6WM84 Sony alkaline LR6 (SG) used together * Measured value by the standard of EIAJ (Electronic Industries Association of Japan). (Using a Sony HF series
3、 cassette tape) *When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). Frequency response (Dolby NR off) Playback: 30 - 18 000 Hz Output Headphones (i jack) Load impedance 8 - 300 Power requirements 1.5 V One rechargeable battery One R6 (size AA) battery Dimensions (w/h/d) A
4、pprox. 76.3 108.4 17.6 mm (318 438 x 2332 inches) Mass Approx. 140 g (5.0 oz.) Supplied accessories Battery case (1) Stereo headphones or earphones with remote control (1) Battery charger (1) Rechargeable battery (NC-6WM, 1.2V, 600 mAh, Ni-Cd) (1) Rechargeable battery carrying case (1) Carrying pouc
5、h (1) Design and specifications subject to change without notice. ? ? ? ? ? ? ? ? ? ? 2 TABLE OF CONTENTS 1.SERVICING NOTES.3 2.GENERAL.5 3.DISASSEMBLY.6 4.MECHANICAL ADJUSTMENTS. 11 5.ELECTRICAL ADJUSTMENTS. 11 6.DIAGRAMS 6-1.Block Diagram . 13 6-2.Printed Wiring Board . 15 6-3.Schematic Diagram .
6、17 6-4.IC Pin Function Description . 22 7.EXPLODED VIEWS. 24 8.ELECTRICAL PARTS LIST. 27 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 o
7、f the soldering iron around 270 C 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 0 OR DOTTED
8、 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 PUB- LISHED BY SONY. ? ? ? ? ? ? ? ? ? ? 3 SECTION 1 SERVICING NOTES This set detects the rot
9、ation of the idler gear (A) (side S and side T) using the photo reflector (PH701, 702). The PH701, 702 are mounted on the MAIN board, therefore the idler gear (A) (side S and side T) cannot be detected with the MAIN board removed. As a result, the motor (M601) cannot be controlled, causing malfunc-
10、tion. Further, the DIRECTION switch (S702) is also mounted on the MAIN board, and with the board removed, the mechanism posi- tion cannot be detected and the operation is not changed over. Therefor, when the voltage check is executed with the MAIN board removed, follow the procedure provided below.
11、1.Setting 1) Refer to “3. DISASSEMBLY”, and remove the MAIN board. 2) Connect the MAIN board to the motor (M601) and the plunger (PM701) using jumper wires. These can be connected easily with the use of the extension tool (Part No. 1-769-143-11) (ten in one set). 3) Short the lands by solder. 4) Con
12、nect the AF oscillator to the TP31 (PH-S), TP32 (PH-T) and the TP (GND). 5) Supply 1.3 V to the battery terminals using the regulated power supply. 2.Preset state To set the PLAY, FF, REW modes, the preset state must be set. 1) Check that the slider (NR) and the DIRECTION switch (S702) are set to th
13、e center position. If not, set the preset state as fol- low. 2) Move the DIRECTION switch (S702) to the side, which the slider (NR) is facing. 3) The slider (NR) will move when the regulated power supply switch is set to OFF once and then set to ON. Move the DI- RECTION switch (S702) according to th
14、is timing and set to the center position. 3.FF, REW modes 1) Check that the preset state is set. 2) Input the square wave or sine wave to the TP31 (PH-S), TP32 (PH-T) and the TP (GND). 3) Move the jog lever (S703) toward FF or REW. 4.PLAY mode 1) Check that the preset state is set. 2) Input the squa
15、re wave or sine wave to the TP31 (PH-S), TP32 (PH-T) and the TP (GND). 3) Press the jog lever (S703) will move the slider (NR) once to- wards the side REV and then to the side FWD. Move the DI- RECTION switch (S702) according to this timing will set the PLAY mode (side FWD). Press the jog lever (S70
16、3) another time for a second and move the DIRECTION switch (S702) ac- cording to the movement of the slider (NR) will set the PLAY mode (side REV). Note 1: If the above fails, perform from preset again. Note 2: When using headphones, the timing for move the DIRECTION switch (S702) can be determined
17、from the beep sound. + PUSH Y/ x r PH702 S703 jog lever S702 (DIRECTION) BP701 FWD R STOP r REV PH701 REW . FF MAIN BOARD (Side A) MAIN BOARD (Side B) connect to the plunger (PM701) TP32 (PH-T) TP (GND) TP31 (PH-S) AF oscillator square wave (sine wave) 100 Hz, 3.5 dB connect to the motor (M601) batt
18、ery terminal 3 battery terminal # ? ? ? ? ? ? ? ? ? ? 4 Slider (NR)Rotation system Rotation system during PLAY. Rotation system during FF.Rotation system during REW. slider (NR) side F side R center insert flywheel (N)insert flywheel (R) reverse pulley clutch assy (F) gear (Y) cam gear gear (REEL) (
19、side T)motor pulley idler gear (A) (side T) gear (FR) (FF: left side) insert flywheel (N)insert flywheel (R) reverse pulley clutch assy (F) idler gear (B) gear (Y) cam gear gear (REEL) (side T) gear (REEL) (side S) motor pulley idler gear (A) (side T) idler gear (A) (side S) gear (NR) (FWD : left si
20、de/ REV : right side) insert flywheel (N)insert flywheel (R) reverse pulley clutch assy (F) gear (Y) cam gear gear (REEL) (side S) motor pulley idler gear (A) (side S) gear (FR) (REW: right side) ? ? ? ? ? ? ? ? ? ? 5 SECTION 2 GENERAL This section is extracted from instruction manual. A UK, Austral
21、ian, and Hong Kong model Modle pour le Royaume-Unie, lAustralie et Hong-Kong Modell fr GB, Australien und Hongkong Other models Autres modles Andere Modelle 1 2 3 4 B VOL AVLS OPEN C D Y x FF (+) REW () Jog lever Levier Jog Jog-Hebel FWD REV HOLD Plug in firmly. Branchez fermement. Fest einstecken.
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