Sony dvps 715 service manual

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Ð 2 Ð 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. WARNING!! WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION, BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 25 cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK. CAUTION: The use of optical instrument with this product will increase eye hazard. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. 1. Check the area of your repair for unsoldered or poorly-sol- dered connections. Check the entire board surface for solder splashes and bridges. 2. Check the interboard wiring to ensure that no wires are ÒpinchedÓ or contact high-wattage resistors. 3. Look for unauthorized replacement parts, particularly transis- tors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer: 4. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recom- mend their replacement. 5. Check the B+ voltage to see it is at the values specified.

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Ð 3 Ð TABLE OF CONTENTS Section Title Page Section Title Page Service Note ............................................................................ 4 1. GENERAL This Player Can Play the Following Discs .................... 1-1 Getting Started .............................................................. 1-1 Basic Operations ........................................................... 1-2 Playing Discs in Various Modes .................................... 1-4 Setting and Adjustments ............................................... 1-8 Additional Information ................................................... 1-9 2. DISASSEMBLY 2-1. Case Removal ............................................................... 2-1 2-2. Front Panel Section Removal ........................................ 2-1 2-3. MB-78 Board Removal .................................................. 2-1 2-4. AU-205 Board Removal ................................................ 2-1 2-5. MD Block AssÕy Removal .............................................. 2-2 2-6. TK-47 Board Removal ................................................... 2-2 2-7. Tray Removal ................................................................. 2-2 2-8. Skew Motor (M903) Removal....................................... 2-2 2-9. Sled Motor (M501) Removal ......................................... 2-3 2-10. Spindle Motor (M901) Removal .................................... 2-3 2-11. Optical Pick-up Removal ............................................... 2-3 2-12. Internal Views ................................................................ 2-4 2-13. Circuit Boards Location ................................................. 2-5 3. BLOCK DIAGRAMS 3-1. Overall Block Diagram.................................................. 3-1 3-2. RF/Servo Block Diagram.............................................. 3-3 3-3. Signal Process Block Diagram..................................... 3-5 3-4. Video Block Diagram..................................................... 3-7 3-5. System Control Block Diagram..................................... 3-9 3-6. Audio Block Diagram.....................................................3-11 3-7. Mode Control Block Diagram........................................ 3-13 3-8. Power Block Diagram.................................................... 3-15 4. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS 4-1. Frame Schematic Diagram........................................... 4-1 4-2. Printed Wiring Boards and Schematic Diagrams......... 4-5 TK-47 Printed Wiring Board .......................................... 4-5 TK-47 Schematic Diagram ............................................ 4-7 MB-78, FG-43 Printed Wiring Boards ........................... 4-12 MB-78 (AV Decoder) Schematic Diagram .................... 4-17 MB-78 (Video Encoder) Schematic Diagram ................ 4-21 MB-78 (Drive), FG-43 (Sled) Schematic Diagrams ...... 4-25 MB-78 (DSP) Schematic Diagram ................................ 4-28 MB-78 (Bias) Schematic Diagram ................................ 4-31 MB-78 (IF µ-com) Schematic Diagram ......................... 4-34 MB-78 (ARP, L Gate Array, Decrypt) Schematic Diagram ....................................................... 4-37 MB-78 (System µ-com, S Gate Array) Schematic Diagram ....................................................... 4-41 HP-96 Printed Wiring Board and Schematic Diagram ....................................................... 4-45 AU-205 Printed Wiring Board ....................................... 4-49 AU-205 Schematic Diagram ......................................... 4-51 FL-88, FR-133 Schematic Diagrams ............................ 4-54 FL-88, FR-133 Printed Wiring Boards .......................... 4-57 ER-2 Schematic Diagram ............................................. 4-61 ER-2 Printed Wiring Board ............................................ 4-65 PS-415 Printed Wiring Board and Schematic Diagram ....................................................... 4-70 POWER BLOCK (HS-930SH) Printed Wiring Board and Schematic Diagram ............. 4-73 5. IC PIN FUNCTION DESCRIPTION 5-1. Interface Control Pin Function (MB-78 Board IC604) .. 5-1 5-2 System Control Pin Function (MB-78 Board IC805) .... 5-2 6. TEST MODE 6-1. Starting up Test Mode ................................................... 6-1 6-2. Selection of Check Item................................................ 6-1 6-2-1. Selected Item Check ................................................ 6-1 6-2-2. All Items Check ........................................................ 6-1 6-3. Error Display.................................................................. 6-2 6-4. General Description of Checking Method ..................... 6-2 6-5. Drive Auto Adjustment .................................................. 6-9 6-6. Drive Manual Operation ................................................ 6-13 6-6-1. Drive Manual Operation menu screen ..................... 6-13 6-6-2. Disc Type .................................................................. 6-13 6-6-3. Manual Control 1 ...................................................... 6-13 6-6-4. Manual Control 2 ...................................................... 6-14 6-6-5. Manual Control 3 ...................................................... 6-14 6-6-6. Manual Adjust 1 ....................................................... 6-14 6-6-7. Manual Adjust 2 ....................................................... 6-15 6-6-8. Auto Adjust ............................................................... 6-15 6-6-9. Check....................................................................... 6-15 6-6-10. EEPROM data screen display ................................. 6-16 6-7. Other Operation............................................................. 6-16 6-8. Emergency History........................................................ 6-17 6-9. Error Code..................................................................... 6-19 7. ELECTRICAL ADJUSTMENT 7-1. Power Supply Check ..................................................... 7-1 1. HS-930SH Board ........................................................... 7-1 7-2. Adjustment of System Control ...................................... 7-2 1. System Clock 27 MHz Adjustment ................................ 7-2 7-3. Adjustment of Video System......................................... 7-2 1. Video Level Adjustment ................................................ 7-2 2. S-Terminal Output Check .............................................. 7-2 3. Checking Composite Video Output B-Y ........................ 7-2 4. Checking Composite Video Output R-Y ....................... 7-3 5. Checking Composite Video Output Y ............................ 7-3 6. Checking S Video Output S-C ....................................... 7-3 7. Checking S Video Output DC Level .............................. 7-3 7-4. Adjustment Related Parts Arrangement ....................... 7-4 8. REPAIR PARTS LIST 8-1. Exploded Views ............................................................. 8-1 8-1-1. Case Assembly ........................................................ 8-1 8-1-2. Front Panel Assembly .............................................. 8-2 8-1-3. Chassis Assembly .................................................... 8-3 8-1-4. DVD Mechanism Chassis Assembly (1) .................. 8-4 8-1-5. DVD Mechanism Chassis Assembly (2) .................. 8-5 8-2. Electrical Parts List ....................................................... 8-6