Sharp DV-L78U Service Manual page 16

DV-L78U
From (1)
<The "3" key of the remote controller is pushed.>
Mecah test mode display
30000000 00000000
<The "1" key of the remote controller is pushed.>
<Disk is put, and the "2" key of the remote controller is pushed.>
*It is usually returned in power source off for the state.
DDT mode
0D000100 00000000
DDT step 1
DD000201 ∗∗++--00
DDT step 2
DD000202 ∗∗++0000
DDT step 3
DD000203 ∗∗++0000
DDT step 4
DD000204 ∗∗000000
DDT step 5
DD000205 ∗∗000000
DDT step 6
DD000206 ∗∗++0000 (DVD)
DD000206 00000000 (CD)
To (2)
Mecah test mode display
3000E000 EEEEEEEE
Laser test mode display
0D000100 00000000
DVD mode (Light is sent out by DVD laser,
and a pickup is moved to the circumference.)
DD000100 00000000
CD mode (Light is sent out by CD laser,
and a pickup is moved to the circumference.)
CD000100 00000000
Laser off mode (Light isn't sent out by laser,
and a pickup is moved to the circumference.)
FD000100 00000000
DDT mode
0D00E201 000000EE
The "playback" key of the remote controller is pushed.
It is executed to focus on of DDT.
Focus offset value(∗∗)
Track offset value(++)
0 layer focus balance value(--)
The "playback" key of the remote controller is pushed.
A track, slead on are done after RF gain outline adjustment and track balance adjustment are done.
0 layer RF gain value(∗∗)
Track balance value(++)
0 layer focus balance value
The "playback" key of the remote controller is pushed.
Just focus adjustment is done.
RF gain adjustment is done again after the completion.
0 layer focus balance value(∗∗)
Track RF gain value(++)
The "playback" key of the remote controller is pushed.
Focus gain adjustment is done.
0 layer focus gain value(∗∗)
The "playback" key of the remote controller is pushed.
Track gain adjustment is done.
Track gain value(∗∗)
The "playback" key of the remote controller is pushed.
A two-layer disk does just focus of layer 1 and focus gain adjustment.
A CD does reading of TOC.
1 layer focus gain value(∗∗)
1 layer focus balance value(++)
When it failed in servo initialization.
It is returned to the test mode initial image plane
by pushing "the playback" of the remote
controller and a "stop" key at the same time.
A playback key and a stop key are pushed at
the same time, and it is returned to the test mode
initial image plane.
The "playback" key of the remote controller is pushed.
The emission of the laser can be confirmed when
a disk cover is opened and a cap switch is
pushed with the thin bar and so on.
Note:Not to face the light of the laser squarely,
caution!
The "playback" key of the remote controller is pushed.
Slead motor is rotated, and it moves a pickup to
the circumference.
The "playback" key of the remote controller is pushed.
It is returned to the cause in power source off.
How to distinguish a difference in the DVD laser
and the CD laser.
DVD laser is lighter in comparison with the CD laser.
Note:Not to face the light of the laser squarely,
caution!
The "playback" key of the remote controller is pushed.
When a disk is not in.
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