Sharp DV-550U Service Manual page 21

Servo adjustment value
reading-out mode
During stop in DVD/CD/VCD mode,
servo adjustment value reading-out
mode is selected if Test 1 key (F1h)
DVDOpe( )
is input.
(0x4000)
Test1
(F1h)
key
Argument of AdjDisplay(*)
is char 0:CD/1:DVD.
(1)Servo version display
F1000001
'PLAY'
(2)Focus offset value display
F1000002
'PLAY'
(3)Track offset value display
F1000003
'PLAY'
(4)0-layer focus balance value display
F1000004
'PLAY'
(5)1-layer focus balance value display
F1000005
'PLAY'
(6)Track balance value display
F1000006
'PLAY'
(7)0-layer focus gain value display
F1000007
'PLAY'
(8)1-layer focus gain value display
F1000008
'PLAY'
(9)Track gain value
F1000009
'PLAY'
(10)RF amplitude value display
F100000A
'PLAY'
(11)RF gain value display
F100000B
'PLAY'
(12)Internal circumference switch ID
value display
F100000C
'PLAY'
Test1
(F1h)
AdjDisplay(*)
(0xFF00)
If the servo adjustment value reading-out
mode is selected, disc is stopped.
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CDOpe( )
(0x1000)
key
In the servo adjustment value reading-out mode,
the focus offset value is first displayed. Every input
of PLAY key, the displayed data is changed as
shown in the left.
After the servo step test, the internal circumference
SW value (ID) display is not defined.
10-6
After measurement is ended in the servo
step test mode,the servo adjustment value
reading-out mode is selected.
SRV Step Test( )
DV-550U