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Panasonic NV-VP23EC Service Manual page 190

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Item
Player mode and
button combination
Jitter check
In STOP (no disc) mode,
press PLAY (DVD) and
OPEN buttons on the
player, and "5" button on
the remote control unit.
Error code
In STOP (no disc) mode,
check
press PLAY (DVD) and
OPEN buttons on the
player, and "0" button on
the remote control unit.*
With pointing of cursor up
and down on display, the
panel controller switches
serial number of history
and sends out the
command accordingly.
Initialsetting
In STOP (no disc) mode,
of laser drive
press PLAY (DVD) and
OPEN buttons on the
current
player, and PAUSE button
on the remote control unit.
Function
Jitter check
Jitter rate is measured and
displayed. Measurement is
repeatedly done in the cycle of one
second. Read error counter starts
from zero upon mode setting. When
target block data failed to be read
out, the counter advances by one
increment. When the failure is
caused by minor error, it may be
corrected when retried to enable
successful reading. In this case, the
counter advances by one. When the
error persists even after retry, the
counter may jump by two or more.
Error code check
The latest error code stored in
EEPROM is displayed.
Initial setting of laser drive current
Initial current value for each of DVD
laser and CD laser is separately
saved in EEPROM.
Display
J XXX
J XXX
Display 1
Jitter rate
Jitter check mode
Press STATUS Key
to select Display 1 or 2
YYY ZZ
YYY ZZ
Display 2
Focus drive value
Read error counter
Jitter rate is shown in decimal notation to one
place of decimal. Focus drive value is shown in
hexadecimal notation.
Error code (play_err) is expressed in the
following convention.
Error code = 0 x DAXX is expressed:
Error code = 0 x DBXX is expressed:
Error code = 0 x DXXX is expressed:
Error code = 0 x 0000 is expressed:
* "nn" denotes the serial number of history.
LD0
LD0
Display 1
Laser current
measurement mode
Press STATUS Key
to select Display 1 or 2
034032
034032
Display 2
CD laser current
measurement
DVD laser current
measurement
The value denotes the current in decimal
notation. The above example shows the initial
current is 34mA and 28mA for DVD laser and CD
laser respectively when the laser is switched on.
Cancellation
method
Press STOP
or OPEN
button.
Cancelled
automatically
5 seconds
nn UXX
later.
nn HXX
nn FXXX
nn F---
Cancelled
automatically
5 seconds
later.

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