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Excellent manual including schematics. The service was great and the manual helped complete the job.
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It was magic after so many years to still be able to source this info. It was equally amazing to return my Pioneer receiver to it near new sound quality AFTER NEARLY 30 YEARS! Thank you for this ability!
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Very quick and easy website to use and fast download of manual, quality of manual is excellent and will be pleased to use this service again in the future, thanks so much!
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Easy and secure way to get a complete service manual of a vintage hifi component. Only some parts of the print copy are dificult to read. Nice price!
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The manual is an excellent reproduction with complete schematics, made troubleshooting and repair a simple process.
KD-SH707
Maintenance of laser pickup
(1) Cleaning the pickup lens Before you replace the pickup,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:amplitude of eye patterrn) will be low.
Is RF output 1.3 0.4Vp-p?
NO Replace it.
YES O.K
Replacement of laser pickup
Turn of the power switch and, disconnect the power cord. (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.
Replace the pickup with a normal one.(Refer to "Pickup Removal" on the previous page)
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. .
Play a disc.
Check the eye-pattern at TP1.
Finish.
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 $4.99 KDSH707 JVC
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