Panasonic SC-TM900DVD Service Manual page 20

Item Operational Condition
and Key Function
Jitter display While
stopped and no disc is
inserted, press and hold
down the
on the player and the
number button, "5" on
the remote
unit.
Press
Display" button for next
page
Error code display While
stopped and no disc is
inserted, press and hold
down the
on the player and the
number button, "0" on
the remote
unit.
Measurement of laser While
current electricity stopped and no disc is
initialization value inserted, press and hold
down the
on the player and the
remote controller unit.
Press
Display" button for next
page
Measurement of DVD While
laser current electricity stopped and no disc is
inserted, press and hold
down the
on the player and the
FUNCTION button
the remote
unit.
Press
Display" button for next
page
ADSC internal RAM While
display stopped and no disc is
inserted, press and hold
down the
on the player and the
number button "1" or "2"
on the remote controller
unit.
the player is Jitter display
Measures
Measurement
button second. Read error counter starts at 0
at the mode setting, and increased by
one as data read fails at target block. A
controller small defect is allowed to correct by
retry. Any possibility is counted as one
increment. Repetitive errors after retry
increase by two levels or more.
"Dimmer/FL
the player is Error code display
Displays the latest error code stored in
EEPROM.
button
controller
the player is Measurement
electricity initialization value
Memorizes each initialization value of
button DVD and CD in EEPROM.
button on the
"Dimmer/FL
the player is Measurement of DVD laser current
electricity
Measures DVD laser current electricity
button and displays the result together with
the initialization
on EEPROM. After measurement, DVD
controller laser is lit till the power is turned off (or
goes off when the primary power is
turned off).
"Dimmer/FL
the player is ADSC internal RAM display
Reads and displays the RAM value
inside ADSC. The address is renewed
button when the CLEAR key is pressed so
that the values at eleven points appear.
Details
*1
J xx
and displays jitter.
*1
is repeated every : Jitter display mode
*2
: Jitter measurement value
*3
: Read error counter
*4
: Focus driving value
Values are shown to one decimal
place in the decimal digit. Focus
driving value is displayed in the
hexadecimal digit.
DVD_F---
*nn: Error history
*--: Error number
*1
of laser current LDO
*1
: Laser current electricity
measurement mode
*2
: DVD current electricity value
*3
: CD current electricity value
Values are shown in the decimal
digit. The above example indicates
that the current electricity
initialization value is 13mA at DVD
laser and 32mA at CD laser when
laser is turned on.
*1
LDD
*1
: DVD laser current electricity
measurement mode
*2
value stored in : Current electricity initialization
value stored in EEPROM
*3
: Present value of current
electricity
Values are shown in the decimal
digit. The above example indicates
that the current electricity
initialization value is 12mA and its
present value is 14mA.
FB0_0000
Values are shown in the
hexadecimal digit. The above
example indicates that ADSC
value at the address, FB0h is
0000h.
20
Display
*2 *3 *4
yyy zz
*2 *3
xxx yyyy
*2 *3
xxx yyyy
TO Exit Mode
Press the STOP or
OPEN button on
the player.
Press the OPEN
button.
Automatically exits
the mode after five
seconds.
Automatically exits
the mode after five
seconds.
Press the STOP or
OPEN button on
the player.