Diagnostic Software
GB 48 CDR7796.
6.4.3 Description of the tests
Focus control test
The focussing lens is continuously moving up and down. The
display reads "BUSY".
Sledge control test
After pressing [F FWD] the sledge continuously moves up
and down. Pressing [REWIND] stops the sledge at the
position it is in and the focus control test resumes. The
display reads "BUSY".
Tray control test
This test starts from within the focus control test routine.
Pressing [OPEN/CLOSE] moves the tray in or out. In the tray
open position one can initiate focus and sledge tests by
pressing [F FWD]. One has to stop these tests pressing
[REWIND] before it is possible to close the tray again.
Depending on the action the display reads "OPEN",
"OPENED", "CLOSE" or "BUSY".
6.5 DC-erase service mode
Figure 6-4
6.5.1 Description
This test is initiated by pressing [ERASE] and [RECORD]
simultaneously while switching on the unit. The player will
erase a complete CD-RW disc (including PMA and ATIP lead
out area) at speed N=2. The display shows the countdown of
the remaining time required for the operation to complete.
The format is "ER mm:ss", where "mm" are the remaining
minutes and "ss" the remaining seconds. After completion
the message "PASSED" is shown, and the player has to be
switched off and on again to start up in normal operating
mode. Switching off the unit before completion of the test,
leaves the disc in an unpredictable state. In such case only a
complete DC-erase procedure can recover the CD-RW disc.
6.5.2 Requirements to perform the test
• Functional CDR player.
• A CD-RW audio disc must be present in the tray.
6.6 Burn in mode
6.6.1 Description:
The Burn In mode is an endless cycle of:
• DC-Erase to erase the CDRW disc with maximum laser
power.
• Recording a CDRW disc
• Finalising at double speed
The Burn In mode is used to test intermittent faults of the
loader.
6.6.2 Requirements to perform the test:
• Working Local Keyboard: needed to start up the test.
• Working Local Display: all output messages must be
displayed on the local display.
• Analog source connected to the CDR99 player
• CDRW disc in tray
Burn in sequence
– Initialisation
The ‘Burn In’ mode is initiated by pressing the [PLAY/
PAUSE] and [RECORD] key on the local keyboard at the
same time, and then switching the POWER switch on.
– Continuous loop
The following picture shows the burn in sequence.
Figure 6-5 Burn in sequence
Continuously do DC erase, record complete CDRW and then
finalise until the player is powered off.
When an error is detected during writing, the DC erase
procedure is called again., the disc will be DC erased and the
cycle starts again.
During the test the display shows the number of hours for
which the test is running and the number of errors detected
during the test. The display looks as follows : “HH BI RE FE”
HH : number of hours on
digits 1 and 2
“BI” : burn in mode, digits
3 and 4
RE : number of errors
detected during DC
erase and write
CDRW modes on
digits 7 and 8
FE : number of errors
detected during
finalise modes on
digits 10 and 11
If started up with a disc other than
a CDRW disc the display shows : ”WRONG DISC”,
if no disc is inserted display : “NO DISC”.
– End of test
To exit the Burn In mode, power off the player.
Load CD-RW disc
Press
<ERASE> + <RECORD>
simultaneously and switch
ON unit
Display shows:
“
PASSED
”
when the erase function is
completed
“
ERROR
”
if DC ERASE fails
Display shows:
“
ER mm:ss
”
mm
:remaining minutes
ss :remaining seconds
TOTAL
and
REM
are also
illuminated
DC ERASE SERVICE MODE
(erasement of complete CD-RW)
To end test, switch OFF unit
CL96532086_027.eps
080999
Write CDRW
Finalise
DC erase
Write complete without error
error
Erase complete without error
Finalise
complete with
or without
error
CL06532018_101.eps
301100
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