Panasonic SA-HT640WPL Service Manual Download

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FL Display

Key Operation

Front Key

Item

Jitter check mode

Press STOP or PLAY
button.

Jitter check

Description

Mode Name

Initial setting

of laser drive

current

DVD laser

drive current

measurement

ADSC internal

RAM data

check

Error code

check

Cancelled automatically
5 seconds later.
To exit, press [POWER]
button on main unit or
remote control.

Press "FL Display" button on
remote control unit for next
page (FL Display) on values
of laser drive current.

Press "FL Display" button on
remote control unit for next
page (FL Display) on values
of dvd drive current.

Press "FL Display" button on
remote control unit for next
page. (FL Display)

Cancelled automatically
5 seconds later.

RAM data for
specified address

Address

CD laser drive

current

measurement

Press STOP or OPEN
button to exit.

In STOP (no disc) mode,
press STOP button on the
player, and "5" button on
the remote control unit.

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.

Jitter rate is shown in decimal notation to
one place of decimal.
Focus drive value is shown in hexadecimal
notation.

In STOP (no disc) mode,
press STOP button on the
player, and "0" button on the
remote control unit. * With
pointing of cursor up and
down on display.

Error code check
The latest error code stored in the
EEPROM IC is displayed.

Error code (play_err) is expressed in the
following convention.
Error code = 0 x DAXX is expressed:

DVDnn UXX

Error code = 0 x DBXX is expressed:

DVDnn HXX

Error code = 0 x DXXX is expressed:

DVDnn FXXX

Error code = 0 x 0000 is expressed:

DVDnn F---

* "xx" denotes the error code

In STOP (no disc) mode,
press STOP button on the
player, and PAUSE button
on the remote control unit.

Initial setting of laser drive current.
Initial current value for each of DVD
laser and CD laser is separately saved
in the EEPROM IC.

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.

In STOP (no disc) mode,
press STOP button on the
player, and FUNCTIONS
button on the remote
control unit.

DVD laser drive current measurement
·DVD laser drive current is measured
and the result is displayed together
with the initial value stored in the
EEPROM IC.
After the measurement, DVD laser
emission is kept on. It is turned off
when POWER key is switched off. (It
is also turned off when POWER button
on the player is switched off.)

In STOP (no disc) mode,
press STOP button on the
player, and "1" button on
the remote control unit.

ADSC internal RAM data check
·ADSC internal RAM data is read out
and displayed.

Laser current measurement
mode

DVD laser current
measurement mode

The value denotes the current in decimal
notation.
The above example shows the initial current
is 34mA and the measured value is 32mA.

The value is shown in hexadecimal
notation. The above example shows the
data in ADSC address OFAh is 6901h.

In STOP (no disc) mode,
press STOP button on the
player, and "3" button on
the remote control unit.

CD laser drive current measurement
CD laser drive current is measured
and the result is displayed together
with the initial value stored in the
EEPROM IC.
After the measurement, CD laser
emission is kept on. It is turned off
when POWER key is switched off. (It
is also turned off when POWER button
on the player is switched off.)

CD laser current
measurement mode

The value denotes the current in decimal
notation.
The above example shows the initial current
is 28mA and the measured value is 26mA.

Jitter rate

Press "FL Display" button on
remote control unit for next
page (FL Display).

SA-HT640WPL