Sony m 98 v service manual

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Ð 2 Ð TABLE OF CONTENTS 1. SERVICE NOTE.......................................................... 3 2. GENERAL.................................................................... 4 3. DISASSEMBLY 3-1. Panel (Rear) Assy ................................................................ 5 3-2. Panel (Lid) Assy .................................................................. 5 3-3. MD Block Assy ................................................................... 6 3-4. Main board, complete ......................................................... 6 3-5. Frame .................................................................................. 7 3-6. Mode Motor Block .............................................................. 7 4. MECHANICAL ADJUSTMENTS.............................. 8 5. ELECTRICAL ADJUSTMENTS............................... 8 6. DIAGRAMS 6-1. IC Pin Description ............................................................. 10 6-2. Block Diagram .................................................................. 12 6-3. Printed Wiring Board ........................................................ 14 6-4. Schematic Diagram ........................................................... 17 7. EXPLODED VIEWS 7-1. Panel (Lid) Section ............................................................ 22 7-2. Main Board Section .......................................................... 23 7-3. Mechanism Section (1) ..................................................... 24 7-4. Mechanism Section (2) ..................................................... 25 8. ELECTRICAL PARTS LIST.................................... 26 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.

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Ð 3 Ð BP701 (SERVICE) S701 (MODE SELECT) TP38 S703 (TAPE DET)TP66 SHORT -� MAIN BOARD (SIDE B) -� �- terminal Õ terminal SECTION 1 SERVICE NOTE This set uses the photo reflector PH701 to detect the rotation of the gear. PH701 is on the main board and so removal of the main board does not allow the set to detect the rotation of the gear. This makes motor control impossible which prevents normal operation. When repairing the set as energized with the main board removed, proceed as follows: ¥ Service the Main Board 1. Short the BP701 (SERVICE) on the main board. (see the Fig. 1.) 2. Refer to the ÒSECTION3 DISASSEMBLYÓ (page 5) and open the main board. 3. Put a tape in the set. 4. Fixed at S703 (TAPE DET) on mode or connect the jumper wire between TP38 and GND (TP66). 5. Supply 3 V DC to the battery terminals. 6. Rotate the S701 (MODE SELECT) one turn by hand (mode sensor). 7. Press the desired operating switch (9 (, FF, etc.). 8. Check the mode on the liquid crystal panel. Use item 6 repeatedly to switch modes. 9. When finished with the job, disconnect the power and open (remove the short) the BP701 (SERVICE). Fig. 1.