FL display “FINE ADJ”
(Write power adjustment mode)
6. Adjust VR1 until reading of the laser power meter is within the
standard value. (Fig. 3)
[Standard value (write power) : 6.8mW ± 0.1mW]
Cautions
Do not allow the write power to reach or exceed 7.5mW, even for a
moment. Doing so will result in damage to the optical pickup.
7. Press “ENTER” button on the unit.
FL display “FINE ADJ” flash for 3 times and display the next
indication.
FL display “ROM-D.CHECK”
(ROM data check mode)
8. Confirm that the reading of the laser power meter is within the
standard value.
[Standard value(ROM data laser power) : 320 W~380 W]
9. Press “ENTER” button on the unit.
FL display “RAM-D.CHECK”
(RAM data check mode)
10. Confirm that the reading of the laser power meter is within the
standard value.
[Standard value(RAM data laser power) : 620 W~740 W]
11. Press “EJECT” to cancel adjustment mode, then press
“POWER” button to turn off the power.
Note : If the value in step 8 and step 10 is out of standard value, turn off the power and readjust
from the beginning.
11. Illustration of IC’s, Transistors and Diodes
12. Terminal Function of IC's
12.1. IC1 (AN8772FHQ) : RF AMP
36
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