JVC THM42 Service Manual

1-36 (No.MB067)
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.)
Remote controller "4" key --- Laser of CD
Remote controller "5" key --- Laser of DVD
1419 0000
FL Display (Example)
FL display
PLAY key
(for jitter value)
STOP key
(for test mode)
STANDBY/ON key
CHOICE key
(switch of mode)
4 key
(laser of CD)
5 key
(laser of DVD)
6 key
(display of jitter value)
OPEN/CLOSE key
(for test mode)

JVC THM42 Specifications

General

Brand	JVC
Model	THM42
Category	Home Theater System
Language	English