Adjustment Method - JVC XM-R700SL Service Manual

Adjustment method

(Adjustment should done when change the PICKUP, mechanism, Printed circuit board.)
Open the bottom cover
Joint the AC adaptor to main body
Powe OFF condition
Press EDIT key keep pressing
condition with press B.SKIP(|<<) key
more than 3sec.
Set change to TEST MODE
Select
Press PLAY key, clear the
last adjust ment data
Select DA
Press PLAY key, goto the
voltage adjust mode
Select
(Play laser)
Press PLAY key
Insert the laser power
meter sensor
Adjust more than 875 W
and more cross this
Select
(Rec laser)
Press PLAY key
Continue next page
LCD full on then indicate TEST MODE
Select the item by F.SKIP(>>|),B.SKIP key
(servo initialize)
(Voltage adjustment)
Adjust the voltage to less than 2.7V or same as 2.7V
at test point (VCC and GND)
Adjustment mode of playback laser power
Adjust the laser power by F.SKIP, B.SKIP
then fix by STOP key
Adjust to more than 875 W or same as
875 W
Adjust ment mode of recording laser power
Adjustment DISC
Pre mastered(PRE DISC):TGYS 1
Recordable (MO DISC):AU-1 or full recorded normality set
80min tracking off set adjust:SONY 80min DISC
XM-R700SL
1-15