Selecting The Test Mode - Sony MDS-S40 Service Manual

5. SELECTING THE TEST MODE

There are 31 types of test modes as shown below. The groups can be switched by turn the = ˜ + knob. After selecting the group
[YES]
button. After setting a certain group, turn the = ˜ + knob switches between these modes.
to be used, press the
Refer to "Group" in the table for details selected.
All items used for servicing can be treated using group S. So be carefully not to enter other groups by mistake.
Display No.
TEMP CHECK C01
LDPWR CHECK C02
EF MO CHECK C03
EF CD CHECK C04
FBIAS CHECK C05
ScurveCHECK C06
VERIFYMODE C07
DETRK CHECK C08
TEMP ADJUST C09
LDPWR ADJUST C10
EF MO ADJUST C11
EF CD ADJUST C12
FBIAS ADJUST C13
EEP MODE C14
Impossible C15
Impossible C16
ERR DP MODE C17
Impossible C18
Impossible C19
Impossible C20
Impossible C21
Impossible C22
Impossible C23
ADJ CLEAR C24
AG Set (MO) C25
AG Set (CD) C26
Iop Read C27
Iop Write C28
S40 ****** C29
CPLAY MODE C30
CREC MODE C31
• For details of each adjustment mode, refer to "5. Electrical Adjustments".
For details of "ERR DP MODE", refer to "Self-Diagnosis Function" on page 2.
• If a different mode has been selected by mistake, press the
• Modes with (X) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set acciden-
[MENU/NO]
tally, press the
overwrite the non-volatile memory and reset it, and as a result, the unit will not operate normally.
Contents
Temperature compensation offset check
Laser power check
Traverse (MO) check
Traverse (CD) check
Focus bias check
S letter check
Non-volatile memory check
Detrack check
Temperature compensation offset adjustment
Laser power adjustment
Traverse (MO) adjustment
Traverse (CD) adjustment
Focus bias adjustment
Non-volatile memory control
Command transmission
Status display
Error history display, clear
Sled check
Access check
Outermost circumference check
Head position check
Same functions as CPLAY MODE
Same functions as CREC MODE
Initialization of non-volatile memory of adjustment value
Auto gain output level adjustment (MO)
Auto gain output level adjustment (CD)
IOP data display
IOP data write
Microprocessing version display
Continuous play mode
Continuous recording mode
button to exit the mode immediately. Be especially careful not to set the modes with (!) as they will
[MENU/NO]
button to exit that mode.
– 17 –
Mark Group ( )
*
C S
C S
C S
C S
C S
(X) C
(X) C
(X) C
A S
A S
A S
A S
A S
(X) (!) D
(X) D
(X) D
S
(X) D
(X) D
(X) D
(X) D
(X) D
(X) D
A S
A S
A S
C S
A S
C S
C A S D
C A S D
Group ( )
*
C: Check A: Adjust
S: Service D: Develop