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SD-AT100H
4. KEY Test Mode
Outline:
This is to check that the system microcomputer properly acknowledges the key operations on the main unit.
Operation: In this test mode, the power is supplied only for the display, and all the FL indications are turned off as in the test
menu mode.
Then, the indication of 8 digits that corresponds to the key identified by the system microcomputer is displayed in
the FL.
When the power key is pressed, the whole FL is lit for 2 seconds before its power is turned off and the test mode
is canceled.
Key
PLAY
STOP
FUNCTION
DGI/ANA/BAND
5. DVD/CD Lid Test Mode
Outline:
The DVD/CD cover is opened and closed repeatedly and the number of repetitions is displayed in the FL. If the finger
jam or time over is detected while the cover is opening or closing, the cover operations is stopped and the error
indication and the number of repetitions are displayed.
Keys available in this test mode are POWER, PLAY, STOP, and OPEN/CLOSE only.
Operation: 1. After entering the test mode, "TEST" is displayed at the top of the FL and "00000" at the bottom, and the unit waits
until the next key operation is performed.
If the CD cover is not closed, close it during this operation.
2. The test is commenced by pressing the OPEN/CLOSE key. The CD cover is controlled in the following procedure
and the FL shows the number of open/close repetitions. The test operation is repeated until the STOP or POWER
key is pressed or the error is detected.
a. Open the DVD/CD cover until the OPEN completion is detected.
b. When the OPEN completion is detected, stop the DVD/CD cover operation and wait for 2 seconds.
c. After 2 seconds, close the DVD/CD cover until the CLOSE completion is detected.
d. When the CLOSE completion is detected, stop the DVD/CD cover operation, display the counter in the FL and
wait for 2 seconds.
e. After 2 seconds, return to step a and repeat the procedure.
3. If finger jam is detected in the middle of the closing operation, or the error that the opening and closing of the cover
does not complete in 5 seconds is detected, "Er ∗∗∗∗∗ is displayed at the bottom of the FL, the motor is stopped,
and the unit enters the stand-by mode. (∗∗∗∗∗ indicates the number of repetition until the test is stopped.)
4. If the STOP key is pressed, the cover operation is stopped at that point (even in the middle of an operation). The
FL indication does not change. The interrupted operation and counting resume from the same point if the OPEN/
CLOSE key is pressed in this state.
5. Pressing the POWER key closes the cover if it is open, and the test mode is canceled to reset.
Supplementary note:
1. The counter continues endlessly. When it reaches the maximum value (99999), the counter returns to "00000"
and continues counting.
6. DVD unit ROM write test mode
Outline:
This mode is to set the microcomputer of the DVD unit to the write mode onto FLASH ROM. In this test mode, "TEST"
is displayed at the top of the FL and "DVD WRITE" at the bottom. All the key operations except for the POWER key
are prohibited.
Operation: 1. Set the output DVD WRITE port to "L", and the DVD +B port to "H".
2. Other ports maintains the state at the transition to the test menu mode, and do not detect any change of input
except for SYS_STOP and RESET (communication with the DVD unit is interrupted.)
3. If the power key is pressed during this operation, the test mode is canceled and the reset process is started.
Segment
KEY A1
KEY A2
KEY A3
KEY A4
Key
OPEN/CLOSE
SKIP DOWN
SKIP UP
VOLUME DOWN
VOLUME UP
– 26 –
Segment
KEY B1
KEY B2
KEY B3
KEY B4
KEY B4
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