JVC TH-M45 Service Manual page 36

4.6 Display of current value of laser
(1) Set the main body at test mode.
(2) Press "CHOICE" key of the remote controller three times. Then, FL display is displayed "CHECK".
(3) The laser current value can be switched between the value of CD and that of DVD by pressing the following key of the remote
controller.
• The number shown in the FL display shows mA of current value of laser.
• The first two numbers ("14" in "1419") shows current value of laser at the time of adjustment after the latest all-initialization,
14mA in this example.
• The last two numbers ("19" in "1419") shows the present current value of laser, 19mA in this example.
• The first two numbers ("14" in "1419") usually shows current value of laser at the time of shipment, so you can see how the
product has been deteriorated by comparing the first two numbers ("14" in "1419") and the last two numbers ("19" in "1419").
CD and DVD:
The laser current value of 80mA or less in normal. The laser current value of over 81mA is not normal. Laser
diode of the pickup has been deteriorated.
• To return to test mode, press "STOP" key of the main body.
4.7 Flap adjustment of the pick-up guide shaft
Please perform flap adjustment of the pick-up guide shaft in the following case:
• Just after you exchange the pick-up.
• Just after you exchange the spindle motor.
• Just after you exchange the traverse mechanism base.
NOTE:
Please perform flap adjustment of the pick-up guide shaft when you exchange the parts above and also when you remove the
parts above.
• When the reading accuracy of the signal is bad (There is a block noise in the screen, Screen stops in the outer circumference of a
disc, etc.)
4 key
(laser of CD)
CHOICE key
(switch of mode)
1-36 (No.MB033)
FL Display (Example)
Remote controller "4" key --- Laser of CD
1419 0000
Remote controller "5" key --- Laser of DVD
5 key
(laser of DVD)
6 key
(display of jitter value)
STOP key
(for test mode)
STANDBY/ON key
OPEN/CLOSE key
(for test mode)
PLAY key
(for jitter value)
FL display