DVD-S530/DV-S5550
DVD-S530/DV-S5550
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3. Display PCB
3.1 Display Test
The display test is performed by nucleus DispDisplay. By
putting a series of test patterns on the local display, the
local display is tested. To step through all different
patterns, the user must either press OPEN/CLOSE
(pattern is ok) or STOP (pattern was incorrect) to proceed
to the next pattern. The display of patterns is continued in
a cyclic manner, shown in Fig. 6, until the user presses
PLAY. If the user presses PLAY before all display patterns
are tested, the DispDisplay nucleus will return FALSE
(display test unsuccessful).
If OK, press OPEN/CLOSE
If OK, press OPEN/CLOSE
If OK, press OPEN/CLOSE
If NOK, press STOP
If NOK, press STOP
If NOK, press STOP
press PLAY to continue
Fig. 6
3.2 Keyboard Test
The keyboard of the DVD player is tested by nucleus
DispKeyb. The user is expected to press all keys on the
local keyboard once. The code of the key pressed is
shown on the local display (1 hexadecimal digit)
immediately followed by a (hexadecimal) number
indicating how many times that key has been pressed.
Example of the local display during this test:
Fig. 7
The key-codes displayed on the local display will scroll
from right to left when the display gets full, the text "K" will
remain on display.
KEY ID
KEY
0
PLAY/PAUSE
1
STOP
2
OPEN/CLOSE
3
STANDBY/ON
4
NEXT
5
PREVIOUS
/
Fig. 8
If any keys are detected more than once (due to hardware
error), the key-code is displayed twice (or more), with the
second digit increased by 1.
If the user does not press all keys at least once (in any
order), the DispKeys nucleus will return FALSE and cause
an error in the overall result of the player script.
The user can leave the keyboard test by pressing the
PLAY key on the local display of the DVD player for at
least one full second.
The result of the keyboard test is shown on local display as
follows:
Note: With this model, "FAIL" always appears because of
less number of keys but it does not mean anything
abnormal.
Fig. 9
Or
Fig. 10
Pressing PLAY on the local keyboard again will proceed to
the next text.
3.3 Remote Control Test
The remote control of the DVD player is tested by nucleus
DispRc. The user must press any key on the remote
control just once. The codes of the key pressed will be
shown on the local display in hexadecimal format.
Example:
Fig. 11