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Very good product. Best service manual. Many thanks
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I am only search for 5 Minute, by it in 5 Minutes to and get ist in few ours! Best i found in the Internet and my Amplifer is repaired as well! Thank you
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Readable text and good copy. Very much needed if you wish to do some repairs on this fine old unit.
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Fint forløb med levering af manualen. Kvaliteten af skanningen betegnes som middel
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I found the manual to be clear concise and complete. It was of immense assistance when removing the unit as the unit was over 22 years old and the wiring diagram was unobtainable from the manufacturer. The exploded drawings were clear as were the instructions and labels.
5-8.
RECORDING AND DISPLAYING THE IOP INFORMATION
5-10. LASER POWER ADJUSTMENT
Check the IOP value of the optical pick-up before adjustments. (Refer to 8. Recording and Displaying IOP Information) Connection :
laser power meter
The IOP data can be recorded in the non-volatile memory. The IOP value on the optical pick-up label and the 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. Press the l m or M L button to display �Iop Write�, and press the ENTER/YES �R� button. 2. The display becomes Ref=@@@.@ (@ is an arbitrary number) and the numbers which can be changed will blink. 3. Input the IOP value on the optical pick-up label. To select the number : Press the l m or M L button. To select the digit : Press the [SYNC REC] button. 4. When the ENTER/YES �R� button is pressed, the display becomes �Measu=@@@.@� (@ is an arbitrary number). 5. As the adjustment results are recorded for the step 4 value. Leave it as it is and press the ENTER/YES �R� button. 6. �Complete!� will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become �Iop Write�. Display Procedure : 1. Press the l m or M L button to display �Iop Read�. 2. �@@.@/##.#� is displayed and the recorded contents are displayed. @@.@ indicates the IOP value on the optical pick-up label. ##.# indicates the IOP value after adjustment 3. To end, press the [CD-MD SYNC] button or MENU/NO �R� button to display �Iop Read�.
Optical pick-up objective lens
digital voltmeter BD (MD) board CN110 pin 5 (I+3V) CN110 pin 4 (IOP)
+ �
5-9.
TEMPERATURE COMPENSATION OFFSET ADJUSTMENT
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. Set the laser power meter on the objective lens of the optical pick-up. (When it cannot be set properly, press the l m or M L button to move the optical pick-up) Connect the digital voltmeter to CN110 pin 5 (I+3V) and CN110 pin 4 (IOP) on the BD (MD) board. 2. Press the l m or M L button to display �LDPWR ADJUST�. (Laser power : For adjustment) 3. Press the ENTER/YES �R� button once to display �LD 0.9 mW $ �. 4. Press the l m or M L button so that the reading of the laser power meter becomes 0.85 to 0.91 mW. Press the ENTER/YES �R� 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. Press the l m or M L button so that the reading of the laser power meter becomes 6.9 to 7.1 mW, press the ENTER/YES �R� button to save it.
Note: Do not perform the emission with 7.0 mW more than 15 seconds continuously. 7. Then, press the l m or M L button to display
�LDPWR CHECK�. 8. Press the ENTER/YES �R� button once to display �LD 0.9 mW $ �. Check that the reading of the laser power meter become 0.85 to 0.91 mW. 9. Press the ENTER/YES �R� button once more to display �LD 7.0 mW $ �. Check that the reading the laser power meter and digital voltmeter satisfy the specified value. Note down the digital voltmeter reading value. Specified Value: Laser power meter reading : 7.0 ± 0.2 mW Digital voltmeter reading : Value on the optical pick-up label ±10%
(Optical pick-up label) KMS260A 27X40 B0825
Adjusting Procedure : 1. Press the l m or M L button to display �TEMP ADJUST�. 2. Press the ENTER/YES �R� button to select the �TEMP ADJUST� mode. 3. �TEMP = [OK]� and the current temperature data will be displayed. 4. To save the data, press the ENTER/YES �R� button. When not saving the data, press the MENU/NO �R� button. 5. When the ENTER/YES �R� button is pressed, �TEMP = SAVE� will be displayed and turned back to �TEMP ADJUST� display then. When the MENU/NO �R� button is pressed, �TEMP ADJUST� will be displayed immediately. Specified Value : The �TEMP = � should be within �E0 - EF�, �F0 - FF�, �00 0F�, �10 - 1F� and �20 - 2F�.
lOP=82.5 mA in this case lOP (mA) = Digital voltmeter reading (mV)/1 (�)
10. Press the MENU/NO �R� button to display �LDPWR CHECK� and stop the laser emission. (The MENU/NO �R� button is effective at all times to stop the laser emission.) 11. Press the l m or M L button to display �Iop Write�.
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