Toshiba SD-2050 Service Manual

Text of Toshiba SD-2050 User Guide:

• Toshiba SD-2050, 1-3-4. Pickup Mechanism Assembly <Removal> 1. Turn over the mechanism chassis assembly (1). 2. Remove the flexible cables (2) at two locations. 3. Remove four screws (3) and remove the pickup mechanism assembly (4). <Mounting> 1. Replace the pickup mechanism assembly (4) with a new one. Remove dampers from the old pickup mechanism assembly used and mount the dampers on the new pickup mechanism assembly. 2. When mounting, perform the reverse steps of the removal described above. Fig. 2-1-16 Note: • The dam

• 6-4. Output PC Board Fig. 3-6-8 EU05 Output PC Board (Top side) Fig. 3-6-9 EU05 Output PC Board (Bottom side) CNX01 CNY01 CNY02 CX01 CX03 CX04 CX05 CX06 CX08 CX10 CX11 CX12 CX13 CX14 CX16 CX18 CX20CX21 CX22 CX23 CX24 CY01 CY02 CY03 CY04 CY05 CY06 CY07 CY08 CY09 CY10 CY11 CY15 CY19 CY20 CY21 CY22 ICY03 JW01 JW02 JW03 JW04 JW05 JW06 JW07 JW08 JW09 JW10 JW11 JW12 JX01 123 A B CX02 CX07 CX09 C

• Toshiba SD-2050, 24 Basic playback Locating a title by entering the title number Locating a title using the top menu Locating a Specific Title, Chapter, or Track Normally, DVD video discs are divided into titles, and the titles are sub-divided into chapters. VIDEO CDs and audio CDs are divided into tracks. You can quickly locate any specific title, chapter, or track. Press TOP MENU. The top menu appears on the TV screen. e.g. Press / / / to select the title you want. If the titles in the top menu are assigned a number, you can directly locate a specific title by pressing its designated number with the num

• 40 Function setup Customizing the Function Settings (continued) Setting details Pause/Still Auto: For normal use. Still and fast motion images can be paused. Frame: The resolution of still pictures is improved, so that you can make a motionless picture more clearer when you pause it. Parental Lock DVD video discs equipped with the parental lock function are rated a

• Toshiba SD-2050, 30 Advanced playback Selecting 3-D (N-2-2) sound enhancement Zooming a Picture You can magnify areas within a picture. Zooming a picture Press ZOOM during normal, slow or still playback. As you repeatedly press the ZOOM button, the magnification level increases. To reduce the magnification level, press the RETURN button. If you press the / / / buttons, the zoom point shifts. When the zoom point reaches an edge of the picture, the color of “Zoom” changes. Pressing the CLEAR button restores the zoom point to the center of the picture. To resume normal playback Press ZOOM repeatedly s

• Toshiba SD-2050, 5 Introduction 6. Water and Moisture Do not use this product near water - for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool and the like. 7. Cleaning Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. 8. Power-Cord Protection Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience re

• Toshiba SD-2050, 4 Introduction IMPORTANT SAFETY INSTRUCTIONS CAUTION: PLEASE READ AND OBSERVE ALL WARNINGS AND INSTRUCTIONS GIVEN IN THIS OWNER’S MANUAL AND THOSE MARKED ON THE UNIT. RETAIN THIS BOOKLET FOR FUTURE REFERENCE. This set has been designed and manufactured to assure personal safety. Improper use can result in electric shock or fire hazard. The safeguards incorporated in this unit will protect you if you observe the following procedures for installation, use and servicing. This unit is fully transistorized and does not contain any parts that can be repaired by the user. DO NOT REMO

• <Tray mounting> 1. Remove the gear (1). 2. Insert the tray (2) horizontally. 3. Set the gear (1) to fit the rack gear of the tray. 4. Insert the tray (2) to the inner side until it stops. 5. Turn the gear (3) to confirm the movement. Fig. 2-1-27 Gear (1) Gear (3) Tray (2) Gear (1) Rack gear of tray 1-4-2. Tray Mounting <The First Tray 1 Mounting> 1. Mount t

• Toshiba SD-2050, 1-4. Tray Replacement Note: • Perform this service only when a defective with a disc not ejected, etc. occurs. 1-4-1. Tray Removal 1. Remove the mechanism chassis assembly. (Refer to item 1-3-1.) 2. Turn the gear (2) clockwise to eject the tray (1). 3. Pull out the tray (1) to this side until it stops. 4. Release the claws on the right side of the mechanism chassis assembly (part A) and pull out the tray (1) with it obliquely lifted up. Fig. 2-1-22 Tray (1) Tray (1) Gear (2) Mechanism chassis assembly A Claws <The First Tray 1 Removal> 1. Slide the tray marked 1 in the arr

• Toshiba SD-2050, 6 Introduction IMPORTANT SAFETY INSTRUCTIONS 18.Damage Requiring Service Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions: a) When the power-supply cord or plug is damaged. b) If liquid has been spilled, or objects have fallen into the product. c) If the product has been exposed to rain or water. d) If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the prod

• Toshiba SD-2050, 28 Advanced playback MEMORY 1 TDC 2 3 4 5 6 7 –––– 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 – –– ––––––– ––––––– ––––––– ––––––– ––––––– ––––––– TDC ––––––– ––––––– ––––––– ––––––– ––––––– ––––––– ––––––– TDC ––––––– ––––––– ––––––– ––––––– ––––––– ––––––– ––––––– TDC ––––––– ––––––– ––––––– ––––

• Toshiba SD-2050, 1-1-3. Front Panel 1. Remove the flexible cable (1). 2. Release four claws (2) and remove the front panel (3). Fig. 2-1-5 1-1-4. Rear Panel 1. Remove three screws (1) and remove the rear panel (2). Fig. 2-1-6 Fig. 2-1-3 <Tray Panel Removal> 1. Eject the tray (3). 2. Twist the tray panel (4) a little in the arrow A direction with the tray (3) held to release two claws and lift up the tray panel (4) in the arrow B direction, then the tray panel (4) is removed. 3. When mounting the tray panel (4), fit the tray panel (4) into the groove of the both sides of the tray (3) until it clicks. Fig. 2-1-4 Tray (5) Gear (4) Mechanism assembly (3) Mechanism assembly (3) A B Tray panel (4) Tra

• Disc motor (D.M.) forced accelleration (500 ms) Focus search PLAY Is forcus servo ON? CLV servo ON. Tracking balance adjustment Tracking servo ON. Focus gain adjustment Tracking gain adjustment Focus balance adjustment RF gain adjustment Repeat three times. Is address code possible to read? Search Picture appears. Does NG continue more than 3 s.? Disc playback NG 4 2-1 5 4 6

• Toshiba SD-2050, 26 Advanced playback Entering the time of the desired location Press T twice. You may have to press further depending on the disc. Press the button repeatedly until the following display appears. Press the number buttons to enter the time. Press PLAY. Playback starts from the desired location. Accessing a Specific Location Directly You can access a specific location by entering its corresponding time (hours, minutes, seconds). 2 1 Notes • Some discs may not respond to this process. • Some scenes may not be located precisely as y

• Toshiba SD-2050, 6. PC BOARDS 6-1. Power Supply PC Board Fig. 3-6-1 EU02 Power Supply PC Board (Bottom side) B A 54321 Part Loca- No. tion Part Loca- No. tion Part Loca- No. tion Part Loca- No. tion C801 B5 C802 B4 C803 B4 C804 B4 C805 A4 C806 A4 C807 A4 C808 A3 C809 B3 C810 B4 C811 B4 C812 A4 C821 A2 C822 A2 C823 B2 C824 B2 C825 B3 C826 B3 C828 A2 C829 B3 C830 A1 C831 B2 C832 B1 C833 A1 C835 B1 C839 B1 CN801 B2 CN802 B2 D802 A5 D803 A5 D804 A4 D805 A4 D806 A4 D807 A3 D808 B3 D809 A4 D821 A3 D822 A2 D823 A3 D824 B3 D825 B3 D8

• Toshiba SD-2050, 25 Basic playback Locating a specific chapter or track Locating a specific chapter or track directly Press T. Skip steps 1 and 2 if you are using a VIDEO CD/ audio CD. Press to highlight the space next to “Chapter.” Press the corresponding number buttons for the chapter or track you want. You can use the +10 button to select numbers from 10 through 99. e.g. To select chapter or track 25 or 1 2 Press PLAY. Playback starts from the selected chapter or track. 3 4 To select a title and chapter number at the same time Press the / buttons to highlight the space next to “

• Toshiba SD-2050, 4 Disc motor (D.M.) does not rotate. Does pin 117 of IC401 (TP409) PLCK oscillate around 10 MHz ? Check peripheral circuit of IC402. Check peripheral circuits of IC402. Check disc motor and wiring. N Y Focus servo is NG. Are FE, RFSB, FSON signals normal? Check peripheral circuit of IC604. Do signals output to pins 4 to 9 of CN501? Check IC502. Check wiring for pickup head. Lens cleaning. Replace pickup mechanism. Y Y N N 5 FE signal Pin 150 (TP405) of IC401 RFSB signal Pin 152 (TP503) of IC401 0.3V 1.65V 0.3V Focus search Focus servo on Focus servo ON signal waveform Fig. 1-3-10 Fig. 1-3-11 Fig. 1-3-12

• Toshiba SD-2050, Table 3-5-4 TA1313F (1/2) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Function GND terminal Drive output 2 Monitor input 2 –– –– Analog VREF Filter capacity for the reference Digital VREF Power supply terminal DPD interchange combination capacity 1 DPD interchange combination capacity 2 DPD integral capacity 1 DPD integral capacity 2 Control line (bit clock) Control line (latch signal) Control line (serial data) Input of standard clock –– –– Capacity for the VRC

• Toshiba SD-2050, 38 Function setup Customizing the Function Settings (continued) Setting details (Continued) 3) Press the / buttons to shift and select the second character by pressing the / buttons. 4) Press the ENTER button. Notes • Some DVD video discs may be set to display subtitles in a different language than you selected. A prior subtitle language may be programmed on the disc. • Some DVD video discs allow you to change subtitle selections only via the disc menu. If this is the case, press the MENU button and choose the appropriate subtitle language from the selection on the disc menu. TV Shape 4:3 L

• Toshiba SD-2050, SECTION 3 SERVICING DIAGRAMS 1. STANDING PC BOARDS FOR SERVICING Fig. 3-1-1 SECTION 3 SERVICING DIAGRAMS EU05 Output PC board EU02 Power supply PC board EU01 Main PC board EU04 Power SW PC board EU03 Front display PC board

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Toshiba SD-2050 Owner's manual 21-12-2023 46

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