Display Pcb; Display Test; Led Test; Keyboard Test/Remote Control Test - Philips DVD963SA Service Manual

Diagnostic Software, Trouble Shooting and Test Instructions
5.3

Display PCB

5.3.1

Display Test

The display test is performed by nucleus DispDisplay. By
putting a serie 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. 5-6, 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
press PLAY to continue
Figure 5-6
5.3.2

LED Test

The LED(s) on the DVD player is (are) tested by nucleus
DispLed. The user must check if the LED(s) is (are) lighted; if it
is, press OPEN/CLOSE, if it is not, press STOP. By pressing
PLAY the script will proceed to the next test. If the user presses
PLAY before OPEN/CLOSE or STOP, the DispLed nucleus will
return TRUE (LED test successful).
5.3.3 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:
Figure 5-7
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.
If NOK, press STOP
If NOK, press STOP
If NOK, press STOP
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DVD963SA
KEY ID KEY
0 PLAY
1 STOP
2 OPEN/CLOSE
3 STANDBY
4 NEXT
5 PREVIOUS
6 PAUSE
7 AUDIO DIRECT
E SOUND MODE
F REPEAT
Figure 5-8
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 minimally 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:
Figure 5-9
Or
Figure 5-10
Pressing PLAY on the local keyboard again will proceed to the
next text.
5.3.4 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:
Figure 5-11
In this example 23 is the hexidecimal code of the pressed RC
key. The user can leave the remote-control test by pressing
PLAY on the local keyboard of the DVD player. The remote
control test is successful if a code was received before the user
5. EN 23
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