Sony dvps 300 service manual
This is the 75 pages manual for sony dvps 300 service manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from sony dvps 300 service manual (Ocr-read)
Page 1
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. 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 line cord for cracks and abrasion. Recommend the replacement of any such line cord to the customer. 6. Check the B+ voltage to see it is at the values specified. 7. Check the antenna terminals, metal trim, ÒmetallizedÓ knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer: LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturersÕ instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The ÒlimitÓ indica- tion is 0.75V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all bat- tery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) Fig. A Using AC voltmeter to check AC leakage 1.5 k W 0.15 µF AC Voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground
Page 2
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-197 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 (M902) 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. Block Diagram 1 (RF/Servo, Power)............................ 3-1 3-2. Block Diagram 2 (Signal Process) ................................ 3-6 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 Control), FG-43 (Sled) Schematic Diagrams ..................................................... 4-25 MB-78 (DSP) Schematic Diagram ................................ 4-30 MB-78 (Bias) Schematic Diagram ................................ 4-33 MB-78 (IF µ-COM) Schematic Diagram ....................... 4-37 MB-78 (ARP, L GATE Array, Decrypt) Schematic Diagram ....................................................... 4-41 MB-78 (System µ-COM, S GATE Array) Schematic Diagram ....................................................... 4-45 ME-15, HP-96 Schematic Diagrams and Printed Wiring Boards ................................................... 4-49 AU-197 Printed Wiring Board ....................................... 4-53 AU-197 Schematic Diagram ......................................... 4-57 FL-88, FR-133 Printed Wiring Boards .......................... 4-61 FL-88, FR-133 Schematic Diagrams ............................ 4-65 ER-2 Schematic Diagram ............................................. 4-69 ER-2 Printed Wiring Board ............................................ 4-73 Power Block (HS-930SF) Printed Wiring Board and Schematic Diagram ....................................................... 4-78 Power Block (HS-930SH) Printed Wiring Board and Schematic Diagram ....................................................... 4-81 Power Block (HS-930SU) Printed Wiring Board and Schematic Diagram ....................................................... 4-84 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. Slection of Check Item.................................................. 6-1 6-3. Error Display.................................................................. 6-2 6-4. General Description of Checking Method..................... 6-2 6-5. Drive Auto Adjustment................................................... 6-12 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 7. ELECTRICAL ADJUSTMENT 7-1. Power Supply Check ..................................................... 7-1 1. HS-930SF/930SH/930SU Board ................................... 7-1 7-2. Adjustment of System Control ...................................... 7-2 1. 27 MHz Free Run .......................................................... 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