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Service Manual

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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY MDSPC3 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 30 (click to view)
Note: Mode which sets the adjustment results recorded in the non-volatile memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting value. If initial setting is performed, perform all adjustments again excluding the temperature compensation offset adjustment. For details of the initial setting, refer to “5-4. Precautions for Adjustments” and execute the initial setting before the adjustment as required. Setting Procedure : 1. Rotate the AMS knob to display “ADJ CLEAR” (C28). 2. Press the @/1 button. “Complete!” will be displayed momentarily and initial setting will be executed, after which “ADJ CLEAR” (C28) will be displayed.

Save the temperature data at that time in the non-volatile memory as 25 ˚C reference data. Note : 1. Usually, do not perform this adjustment. 2. Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C. Perform it immediately after the power is turned on when the internal temperature of the unit is the same as the ambient temperature of 22 ˚C to 28 ˚C. 3. When D101 has been replaced, perform this adjustment after the temperature of this part has become the ambient temperature. Adjusting Procedure : 1. Rotate the AMS knob and display “TEMP ADJUST” (C03). 2. Press the @/1 button and select the “TEMP ADJUST” (C03) mode. 3. “TEMP = [OK]” and the current temperature data will be displayed. 4. To save the data, press the @/1 button. When not saving the data, press the x/Z button. 5. When the @/1 button is pressed, “TEMP = SAVE” will be displayed and turned back to “TEMP ADJUST” (C03) display then. When the x/Z button is pressed, “TEMP ADJUST” (C03) will be displayed immediatelly. Specified Value : The “TEMP = ” should be within “E0 - EF”, “F0 - FF”, “00 0F”, “10 - 1F” and “20 - 2F”.

The Iop (C28) data can be recorded in the non-volatile memory. Iop value on the label of the optical pick-up and Iop value after the adjustment will be recorded. Recording these data eliminates the need to read the label on the optical pick-up. Recording Procedure : 1. While pressing the AMS knob and x/Z button, connect the power plug to the outlet, and release the AMS knob and x/Z button. 2. Rotate the AMS knob to display “[Service]”, and press the @/1 button. 3. Rotate the AMS knob to display “Iop Write” (C05), and press the @/1 button. 4. The display becomes Ref=@@@.@ (@ is an arbitrary number) and the numbers which can be changed will blink. 5. Input Iop value written on the optical pick-up. To select the number : Rotate the AMS knob. To select the digit : Press the AMS knob 6. When the @/1 button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number). 7. As the adjustment results are recorded for the 6 value. Leave it as it is and press the @/1 button. 8. “Complete! !” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop Write” (C05). Display Procedure : 1. Rotate the AMS knob to display “Iop Read” (C26). 2. “@@.@/##.#” is displayed and the recorded contents are displayed. @@.@ indicates Iop value labeled on the pick-up. ##.# indicates Iop value after adjustment 3. To end, press the x/Z button to display “Iop Read” (C26).

Check Iop value of the optical pick-up before adjustments. (Refer to 5-8. Recording and Displaying Iop Information.)
Laser power

Connection :


optical pick-up objective lens Digital volt meter

BD board CN105 pin 1 (I+3V) CN105 pin 2 (Iop)

Adjusting Procedure : 1. Set the laser power meter on the objective lens of the optical pick-up. Connect the digital volt meter to CN105 pin 1 (I+3V) and CN105 pin 2 (Iop). 2. Rotate the AMS knob and display “LDPWR ADJUST” (C13). (Laser power : For adjustment) 3. Press the @/1 button once and display “LD 0.9 mW $ ”. 4. Rotate the AMS knob so that the reading of the laser power meter becomes 0.85 to 0.91 mW. Press the @/1 button after setting the range knob of the laser power meter, and save the adjustment results. (“LD SAVE $ ” will be displayed for a moment.) 5. Then “LD 7.0 mW $ ” will be displayed. 6. Rotate the AMS knob so that the reading of the laser power meter becomes 6.9 to 7.1 mW, press the @/1 button and save it. Note : Do not perform the emission with 7.0 mW more than 15 seconds continuously.


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