Philips DVD-712, Service Manual

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Diagnostic Software Descriptions And Troubleshooting
GB 22 DVD712-722 5.
5.3 Display PCB
5.3.1 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 PLAY (pattern is ok) or PAUSE
(pattern was incorrect) to proceed to the next pattern. The
display of patterns is continued in a cyclic manner until the
user presses NEXT. If the user presses NEXT before all
display patterns are tested, the DispDisplay nucleus will
return TRUE (display test successful).
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 PLAY, if it is not, press PAUSE. By pressing
NEXT the script will proceed to the next test. If the user
presses NEXT before PLAY or PAUSE, the DispLed nucleus
will return TRUE (LED test successful).
Figure 5-5
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 5-6
The key-codes displayed on the local display will scroll from
right to left when the display gets full, the text "tb-" will remain
on display.
Figure 5-7
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 test will also pass if all buttons, except the microphone
key buttons, are pressed.
The user can leave the keyboard test by pressing the NEXT
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 5-8
Or
Figure 5-9
Pressing NEXT 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 5-10
In this example 23 is the hexidecimal code of the pressed RC
key. The user can leave the remote-control test by pressing
NEXT on the local keyboard of the DVD player. The remote
If OK, press PLAY If NOK, press PAUSE
If OK, press PLAY If NOK, press PAUSE
If OK, press PLAY If NOK, press PAUSE
press NEXT to continue
CL 96532065_006.eps
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CL 96532065_007.eps
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key id. key
0 PLAY
1 NEXT
2 PREVIOUS
3 PAUSE
4 STOP
5 OPEN/CLOSE
6 3D-SURROUND
7 KEY- (Mic Control)
8 Once More (Mic Control)
9 KEY+(Mic Control)
A STAND BY
CL16532007_007.eps
300101
CL 96532065_009.eps
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CL 96532065_010.eps
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CL 96532065_011.eps
120799