Replacement Of Laser Pickup - JVC MX-J30 Service Manual

(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 RF output
MX-J30/MX-J330/MX-J35R
Replacement of laser pickup
Turn off the power switch and,disconnect the
power cord from the ac outlet.
Rep
lace 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.
be replaced.
due to excessive current.
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