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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.
Precautions
1-4 Handling the optical pick-up
The laser diode in the optical pick up may suffer electrostatic breakdown because of potential static electricity from clothing and your body. The following method is recommended. (1) Place a conductive sheet on the work bench (The black sheet used for wrapping repair parts.) (2) Place the set on the conductive sheet so that the chassis is grounded to the sheet. (3) Place your hands on the conductive sheet(This gives them the same ground as the sheet.) (4) Remove the optical pick up block (5) Perform work on top of the conductive sheet. Be careful not to let your clothes or any other static sources to touch the unit. �Be sure to put on a wrist strap grounded to the sheet. �Be sure to lay a conductive sheet made of copper etc. Which is grounded to the table.
THE UNIT 1M CONDUCTIVE SHEET WRIST-STRAP FOR GROUNDING
1M
Fig.1-3
(6) Short the short terminal on the PCB, which is inside the Pick-Up ASS�Y, before replacing the PickUp. (The short terminal is shorted when the PickUp Ass�y is being lifted or moved.) (7) After replacing the Pick-up, open the short terminal on the PCB.
1-5
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