2-19
UX-G6/FS-G6
Maintenance of laser pickup Replacement of laser pickup
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)
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 P4601.
Finish.
(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.
Is the level of
RFOUT under
1.25 0.22Vp-p?
Replace it.
NO
YES
O.K
(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.
Содержание AX-UXG6
Страница 16: ...1 16 UX G6 FS G6 M E M O ...
Страница 17: ...2 1 UX G6 FS G6 AX UXG6 ...
Страница 27: ...2 11 UX G6 FS G6 XT UXG6 ...
Страница 46: ...2 30 UX G6 FS G6 M E M O ...
Страница 47: ...2 31 UX G6 FS G6 TD UXG6 ...
Страница 65: ...2 49 UX G6 FS G6 A B C D E F G 3 4 5 2 1 FL Display and micom section AX UXG6 ...
Страница 66: ...2 50 UX G6 FS G6 A B C D E F G 3 4 5 2 1 System control section XT UXG6 Main signal ...
Страница 68: ...2 52 UX G6 FS G6 A B C D E F G 3 4 5 2 1 Tuner section XT UXG6 except Ver J FM Tuner signal ...
Страница 69: ...2 53 UX G6 FS G6 A B C D E F G 3 4 5 2 1 Tuner section XT UXG6 only Ver J FM Tuner signal ...
Страница 71: ...2 55 UX G6 FS G6 A B C D E F G 3 4 5 2 1 Dolby section TD UXG6 Tape playback signal Tape recording signal ...
Страница 72: ...2 56 UX G6 FS G6 A B C D E F G 3 4 5 2 1 Printed circuit boards System control Main amplifier board AX UXG6 ...
Страница 73: ...2 57 UX G6 FS G6 A B C D E F G 3 4 5 2 1 System control Analog IN digital OUT board XT UXG6 ...
Страница 74: ...2 58 UX G6 FS G6 A B C D E F G 3 4 5 2 1 CD Servo Main board XT UXG6 ...
Страница 75: ...2 59 UX G6 FS G6 A B C D E F G 3 4 5 2 1 Main board TD UXG6 ...
Страница 76: ...2 60 UX G6 FS G6 A B C D E F G 3 4 5 2 1 Tuner board TD UXG6 ...
Страница 85: ...3 9 UX G6 FS G6 M E M O ...