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It's a good manual, this one it's a scan from the original factory service manual, great quality 100% readeable. definetely it worths what I paid for.
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A good manual! fast service and good qualityi for pdf document.
thanks!
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Very helpful and complete manual. Maybe only one negative is schematics have sometimes unreadable name of the parts. But it's not a big problem.
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Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
UX-G6/FS-G6
Maintenance of laser pickup Replacement of laser pickup
(1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear. 1. The level of RF output (EFM output:ampli tude of eye pattern) will below. Plug the power cord in,and turn the power on. At this time,check that the laser emits for about 3seconds and the objective lens moves up and down. Note: Do not observe the laser beam directly. Turn off the power switch and,disconnect the power cord from the ac outlet.
Replace the pickup with a normal one.(Refer to "Pickup Removal" on the previous page)
Is the level of RFOUT under 1.25 0.22Vp-p? YES O.K
NO Replace it.
Play a disc.
Check the eye-pattern at P4601.
Finish.
(3) Semi-fixed resistor on the APC PC board The semi-fixed resistor on the APC printed circuit board which is attached to the pickup is used to adjust the laser power.Since this adjustment should be performed to match the characteristics of the whole optical block, do not touch the semi-fixed resistor. If the laser power is lower than the specified value,the laser diode is almost worn out, and the laser pickup should be replaced. If the semi-fixed resistor is adjusted while the pickup is functioning normally,the laser pickup may be damaged due to excessive current.
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 $4.99 FS-G6 JVC
Circuit Diagrams Set of circuit diagrams. The diagrams will be provided as PDF file. The file will be delivered after…
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