A-70
Sept, 1997
TEST MODE
NOTE :Before executing test mode, be sure to backup user data as explained in the section “Saving and
loading user data.”
When you execute test mode, the various parameters will be given special settings. After executing test mode,
be sure to either load the user data, or initialize the internal RAM.
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Necessary items
DP-6 (foot pedal)
EV-5 (expression pedal)
MIDI Sequencer
MIDI cable x 2
VE-GS1 (voice expansion board)
Oscilloscope
Headphones
Devices for measurement ( mono dummy plug x 2)
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Entering test mode
While simultaneously holding down numeric keys 1, 3, and 5, turn the power on. The backup RAM and
internal battery will be checked, and the result displayed in the LCD. If there is a problem, check MAIN
BOARD IC6, 10, and BT1.
Following this, the version and test item menu will appear, and the A-70 will wait for test items to be
selected.
²
Exiting test mode
Turn the power on once again to return to normal mode.
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Test items
The A-70/EX has the following test items.
Each test item is assigned to the following data entry keys.
Press the appropriate number to enter the corresponding test item. For details on each test, refer to the
explanations for each item.
0 : Version and test item menu display
1 : SW/LED test
2 : LCD test
3 : Slider VR test
4 : Pedal test
5 : Bender value setting
6 : Bender/wheel test
7 : MIDI test
8 : Not Available
9 : Keyboard test and audio signal output test
0 : Version and test item menu display
Summary : Display the version and test items in the LCD
Procedure : Press numeric key 0 to display the menu.
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The system program version and the test item menu will be displayed.
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The test program will wait for an item to be selected.
1 : SW/LED test
Summary : Check LED and switch operation
Procedure : Press numeric key 1 to enter the SW/LED test item.
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All LEDs will light. Check that there are no LEDs that fail to light.
(If there is a problem, refer to check 1.)
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Press each SW, and check that each of the corresponding LEDs or LCD characters go dark.
(If there is a problem, refer to check 1.)
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This completes the SW/LED test.
NOTE:To exit the SW/LED test item and go to another item, hold down ENTER and press the numeric key
corresponding to the desired test item.
Action :
check 1 :
PANEL L BOARD SW/LED
PANEL R BOARD SW/LED
PANEL L BOARD IC709, 710
PANEL R BOARD IC201
PANEL L BOARD CN707 <=> MAIN BOARD CN8
PANEL R BOARD CN201 <=> MAIN BOARD CN5
MAIN BOARD IC12
2 : LCD test
Summary : Check for unevenness or defects in the LCD and the operation of the contrast control circuit
Procedure : Press numeric key 2 to enter the LCD test item.
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All pixels of the LCD will light. Check that there is no unevenness or defect in the LCD.
(If there is a problem, refer to check 1.)
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Check that the contrast of LCD changes by pressing the INC/DEC button (or moving the DATA ENTRY
slider).
(If there is a problem, refer to check 1.)
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This completes the LCD test.
Action :
check 1 :
LCD UNIT
LCD UNIT <=> MAIN BOARD CN6
MAIN BOARD IC12
3 : Slider VR test
Summary : Check the operation of the slider VRs.
Procedure : Press numeric key 3 to enter the slider VR test item.
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Summary of Contents for A-70
Page 2: ...2 A 70 Sept 1997 LOCATION OF CONTROLS REAR VIEW ...
Page 3: ...3 A 70 Sept 1997 EXPLODED VIEW N 1 ...
Page 4: ...4 A 70 Sept 1997 KEYBOARD PARTS LIST 76 KEY KEYBOARD TP 8S AT 7699510000 EXPLODED VIEW N 2 ...
Page 5: ...5 A 70 Sept 1997 BLOCK DIAGRAM ...
Page 22: ...22 A 70 Sept 1997 ...
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