Sony MZ-NF520D Service Manual page 25

• Adjustment Method of CD and MO Overall Adjustment
Mode
1. Set the test mode (see page 13).
2. Press the key to activate the overall adjustment mode.
.
Set LCD display
000
A s s y 1 1
3. Insert CD disc in the set, and press the
CD overall adjustment mode. Automatic adjustments are made.
Set LCD display
XXX
C D R U N
XXX : Item number for which
an adjustment is being executed.
4. In case of CD overall adjustment NG, readjust from the NV
reset (see page 18), The temperature correction (see page 18)
may be omitted.
Set LCD display
000
* * * N G
*** : NG item number.
5. If OK through the CD overall adjustments, then perform MO
overall adjustments.
Set LCD display
000
C D O K
6. Insert MO disc in the set, and press the > key to set the
MO overall adjustment mode. Automatic adjustments are
made.
Set LCD display
XXX
M O R U N
XXX : Item number for which
an adjustment is being executed.
7. In case of MO overall adjustment NG, readjust from the NV
reset (see page 18). The temperature correction (see page 18)
may be omitted.
Set LCD display
000
* * * N G
*** : NG item number.
8. If OK through the MO overall adjustments, press the
• Overall Adjustment error message
The following message will be displayed if adjustment
. key to set the
procedure is mistaken in the CD and MO overall adjustment.
Message
CLOSE!
Set CD!
Set MO!
NoTmp!
• CD and MO Overall Adjustment Items
1. CD overall adjustment items
Item No.
High reflection electrical offset adjustment
ALFA offset adjustment
HPIT adjustment
key to return to the test mode and terminate the
x/CANCEL
overall adjustment mode.
Set LCD display
000
M O O K
Display timing
During CD/MO/DISC
automatic distinction
overall adjustment
During MO/DISC
automatic distinction
overall adjustment
During offset adjustment
During offset adjustment
During CD/MO/DISC
automatic distinction
overall adjustment
Description
761 VC,VR power supply H/L selection
300 HPIT setting . servo OFF
561 SLED inward movement
562 SLED outward movement
312 Laser ON . Focus UP . vc correction
313 IJ offset adjustment
314 FE offset adjustment
320 Focus servo ON
324 TE offset adjustment 1
321 TE gain adjustment
328 TWPP gain adjustment
324 TE offset adjustment 1
332 TE offset adjustment 2
330 Tracking servo ON
336 ABCD gain adjustment
337 KF gain correction
338 RF gain adjustment
344 FCS gain adjustment
345 TRK gain adjustment
521 Two-axis sensitivity (outer position)
522 Two-axis sensitivity (outer position)
300 HPIT setting . servo OFF
MZ-NF520D
Description
DISC is not inserted.
• CD overall adjustment is not
completed in the MO overall
adjustment.
• CD and MO overall
adjustment is not completed
in the offset adjustment.
MO overall adjustment is not
completed in the offset
adjustment
Temperature correction
(item number 015)
is not finished.
25