Special Test Mode - Yamaha MDX-E100 Service Manual

MDX-E100

SPECIAL TEST MODE

How to set to the special test mode
Press the POWER button while pressing the REC/PAUSE button and the STOP button. Then all the indicators will light up.
Operation procedure
Every time the REC/PAUSE button is pressed, lighting of indicators and items on the display change as follows.
1) All indicators light up.
2) All indicators turn off.
3) Segments not sharing the border light up.
4) Above segments turn off and other segments light up.
5) The date when the software was entered appears on the display.
6) The version of the micro processor appears on the display.
7) The time of auto-marking appears on the display.
8) The analog level of auto-marking appears on the display.
9) The digital level of auto-marking appears on the display.
10) Write/read check for EEPROM appears on the display
When the INPUT button is pressed at this point, whether the micro processor executed data write/read function into
EEPROM or not is checked.
If [OK] appears on the display and the pin 6 of IC106 is at "H", the check result is satisfactory.
[NG] is displayed when there is an error while writing or reading the data.
In such a case, check EEPROM (IC107).
11) Display the checking "Check SUM" of the micro processor program.
Press the PLAY button during "Check SUM" appears to confirm CHECK SUM of present program.
12) Display the checking "Corr. Receive".
13) Display the checking "R.Corr.Clear".
How to cancel the special mode
Press the STOP button, and the mode will change from the special test mode to the product mode and the data in RAM will
be cleared.
Note : Turning off the power will cancel the special test mode but will not clear the data in RAM.
Data to write in EEPROM (IC107)
INPUT mode
REPEAT mode
RANDOM mode
PROGRAM mode
REC mode (STEREO/MONO)
AUTO MARK/MANUAL
DISPLAY mode
17
[ CPU Ver:Z104 ]
[ AM Time :C8h ]
[ AM Lv1_A:24h ]
[ AM Lv1_D:1Ah ]
[ EE W/R Check ]
[ Check SUM ]
[ Corr Receive ]
[ R.Corr.Clear ]
Initial settings
ANALOG
OFF
OFF
OFF
STEREO
AUTO ("MANUAL" does not light up.)
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