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Great Manual. This manual is available no where else. It was exactly what I was looking for.
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The TEAC A-1500's Service Manual was instrumental in reviving this classic reel-to-reel. Not only does it have the schematics, exploded parts diagram and parts list, it also provided mechanical adjustment information that approximate factory default settings.
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This service manual was determinant to enable to fix my Alpine Amplifier. I am pleased with my purchase. For a 5 star rating I would like to see a higher resolution scan of the printed circuit board lay-out because the gray scale grafics was dificult to see. Also some schematic diagrams were scanned at a slight angle. Never the less, it had all information I needed to troubleshoot and service my equipment.
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Complete manual, the good quality of reproduction allows enlarged print-out of the schematic diagram in the size it probably had in the original print edition and which is necessary for practical use.
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The service manual was complete and the components on the drawings very good visible.
5.
TEMPERATURE COMPENSATION OFFSET ADJUSTMENT
6.
LASER POWER ADJUSTMENT
laser power meter
Connection:
Save the temperature data at that time in the non-volatile memory as 25°C reference data.
Notes: 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. When D101 has been replaced, perform this adjustment after the temperature of this part has become the ambient temperature.
Optical pick-up objective lens
3.
digital voltmeter BD (MD) board TP29 (IOP +) TP30 (IOP �)
+ �
Adjusting Method: 1. Turn the MULTI JOG dial and display �TEMP ADJUST�. 2. Press the ENTER/YES button and select the �TEMP ADJUST� mode. 3. �TEMP = � and the current temperature a data will be displayed. 4. To save the data, press the ENTER/YES button. When not saving the data, press the EDIT/NO button. 5. When the ENTER/YES button is pressed, �TEMP= SAVE� will be displayed for some time, followed by �TEMP ADJUST�. When the EDIT/NO button is pressed, �TEMP ADJUST� will be displayed immediately. Specifications: The temperature should be within �E0-EF�, �F0-FF�, �00-0F�, �10-1F� and �20-2F�.
Adjusting Method: 1. Set the laser power meter on the objective lens of the optical pick-up. (When it cannot be set properly, press the ) button or 0 button and move the optical pick-up.) Connect the digital voltmeter to CN110 pin 5 (I+3 V) and CN110 pin 4 (IOP) of the BD (MD) board. 2. Turn the MULTI JOG dial and display �LDPWR ADJUST�. (Laser power: for adjustment) 3. Press the ENTER/YES button and display �LD 0.9 mW $ �. 4. Turn the MULTI JOG dial so that the reading of the laser power meter becomes 0.82 to 0.93 mW. Set the range control on the laser power meter to 10 mW, then press the ENTER/YES button to save the adjustment result in the non- volatile memory. (�LD SAVE $ � will be displayed for a moment.) 5. Then �LD 7.0 mW $ �will be displayed. 6. Turn the MULTI JOG dial so that the reading of the laser power meter becomes 6.9 to 7.1 mW, press the ENTER/YES button and save the adjustment result in the nonvolatile memory. (�LD SAVE $ � will be displayed for a moment.) Note: Do not perform the emission with 7.0 mW more than 15 seconds continuously. 7. Turn the MULTI JOG dial and display �LDPWR CHECK�. 8. Press the ENTER/YES button and display �LD 0.9 mW $ �. Check that the reading of the laser power meter becomes 0.80 to 0.96 mW. 9. Press the ENTER/YES button and display �LD 7.0 mW $ �. Check that the reading of the laser power meter and digital voltmeter satisfy the specified value. Specification: Laser power meter reading : 7.0 ± 0.2 mW Digital voltmeter reading : Optical pick-up displayed value ±10%
(Optical pick-up label)
KMS260A 27X40 B0567
lOP=56.7 mA in this case lOP (mA) = Digital voltmeter reading (mV)/1 (�)
10. Press the EDIT/NO button and display �LDPWR CHECK�, and stop the laser emission. (The EDIT/NO button is effective at all times to stop the laser emission.)
� 25 �
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