33
6.4.6.
Optical Pick-up Self-Diagnosis
The optical pickup self-diagnosis function and tilt adjustment check function have been included in this unit. When repairing, use the
following procedure for effective self-diagnosis and tilt adjustment. Be sure to use the self-diagnosis function before replacing the
optical pickup when "NO DISC" is displayed. As a guideline, you should replace the optical pickup when the value of the laser drive
current is more than the specified value.
Note:
Press the power button to turn on the power, and check the value within three minutes before the unit warms up. (Otherwise, the
result will be incorrect.)
Figure 2
"NO DISC" is displayed, unit
does not play smoothly, etc.
Check the laser drive current.
Replace the traverse unit.
(Refer to the section "OPTICAL
PICKUP REPLACEMENT
PROCEDURE" in this Guide.)
Initialize the main unit.
Value is more than
37 (DVD), 41 (CD).
Replace with a new optical pickup if the present
value is more than 37 (DVD), 41 (CD).
Cause: Damage due to static electricity
during replacement.
Use the optical pickup self-diagnosis function.
Method: With no disc in the main unit:
Press the "FUNCTIONS" button on the remote
control unit while pressing the "STOP"
button on the main unit. (DVD)
Press the "3" button on the remote
control unit while pressing the "STOP"
button on the main unit. (CD)
[Display content (display1/display2)]
LDD
(DVD)
LDC
(CD)
Factory setting
Present value
Factory setting
Present value
/
/
Summary of Contents for SA-VK680PU
Page 16: ...16 5 3 Disc Information 5 3 1 Disc Playability Media ...
Page 19: ...19 5 5 DivX VOD Content ...
Page 20: ...20 5 6 USB Play and Recording ...
Page 21: ...21 ...
Page 38: ...38 6 5 6 Deck Mechanism Error Code Table ...
Page 49: ...49 ...
Page 51: ...51 9 2 Main Components and P C B Location ...
Page 118: ...118 ...
Page 120: ...120 ...
Page 146: ...146 ...