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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.
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downloaded next day , manual is very helpful , fast and easy
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This Service Manual was exactly what I needed to repair my Philips TV. The purchase was convenient and I received the manual at the same day I paid for it.
DVR-A03
Write Power High Adjustment]
"0AW"
Adjust with UP/DN command so that the indication of light power meter becomes 10.7 ± 0.2mW.
"EE"
(Store the adjustment value in the nonvolatile memory)
Selects DVD-RW mode.
[Erase Power APC Low Adjustment]
"5AW"
Adjust with UP/DN command so that the indication of light power meter becomes 5.4 ± 0.1mW.
"EE"
(Store the adjustment value in the nonvolatile memory)
[Erase Power APC High Adjustment]
"4AW"
Adjust with UP/DN command so that the indication of light power meter becomes 10.8 ± 0.1mW.
"EE"
(Store the adjustment value in the nonvolatile memory)
[RW Erase Power Low Adjustment]
"7AW"
Adjust with UP/DN command so that the indication of light power meter becomes 1.07 ± 0.1mW.
"EE"
(Store the adjustment value in the nonvolatile memory)
[RW Erase Power High Adjustment]
"6AW"
Adjust with UP/DN command so that the indication of light power meter becomes 1.13 ± 0.1mW.
"EE"
(Store the adjustment value in the nonvolatile memory)
(2) CD Power Adjustment
� Set the wavelength of the light power meter to 780 nm, and shine the sensor to the objective lens.
(2.1) Playback Power Adjustment
Objective
To optimize the playback power of laser diode (LD).
Symptom when out of adjustment
When a gap is terrible : Player does not playback, track search is impossible When a gap is light : RF waveform is dirty. STOP
Measurement Instru- Shine the light emitted from the objective Player state ment connections lens on the light power meter sensor.
Wavelength 780nm Ave. mode
Adjustment location VR104 Disc
None needed
Adjustment standard Wavelength 780nm, value 1.26 ± 0.03mW (Ave.)
[Procedure]
"1DT" (Selects CD-R mode) "LD" (LD ON)
Adjust VR104 so that the indication of light power meter becomes 1.26 ± 0.03mW.
"LD"
(LD FF)
Note: When confirm the output power once again after the Playback Power Adjustment, if indication of the light power meter is limit of 1.26 ± 0.06mW, there is not a problem.
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