9
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Tools required
• MIDI cable
• SmartMedia x2 (Formatted / Protected)
• Oscillator (SINE WAVE of 1kHz, 800Hz)
• Oscilloscope
• Headphones
• Monitor Speaker (MA-12 etc.)
◆
Entering the TEST MODE
(1)Insert a card without write protected to card slot previously.
(2)Turn the power on while holding down [FILTER -12dB/-24dB],
[FILTER TYPE], [MODULATION(LFO 2) DEPTH SELECT].
(3)Test mode is now set and the memory test starts.
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TEST Items
The following 8 tests are available and each test is detailed below.
Some test items will start automatically when the previous test item
was a pass.
Next test can be selected from pressing [INC].
Previous test can be selected from pressing [DEC].
The tests can be separately selected from the number keys or
[SHIFT].
[NUMBER 1] MEMORY Test
[NUMBER 2] MIDI Test
[NUMBER 3] Card Test
[NUMBER 4] Sw&LED Test
[NUMBER 5] A/D Test
[NUMBER 6] LCD Test
[NUMBER 7] Sound Test
[NUMBER 8] Input Test
[SHIFT] FACTORY RESET
◆
Exiting the TEST MODE
(When the test is SW/LED, exit it.)
Press [SHIFT], then "Are You Sure?" is displayed.
Press [WRITE], then display of Factory Reset appears.
Press [WRITE] again to exit the test mode, then factory data will be
loaded.
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Details of the each test
1. MEMORY Test
(1) When the unit enters the test mode, Memory test starts
automatically and checks CPU, DSP, SRAM, and Battery. Is
[fig.1] shown on the LCD?
(2) If test results are OK.Memory test ended correctly.
And, MIDI Test program runs automatically.
* When there is something wrong, error message appears on
the LCD.
Check each point according to the error message.
2. MIDI Test
(1) [fig.2] is shown on the LCD.
(2) Connect MIDI-IN and MIDI-OUT with a MIDI cable
Is "OK" shown on the LCD.
* If "OK" does not indicated, there in some error in MIDI circuit.
Check IC47 and IC65 on the MAIN BOARD.
(3) Disconnect MIDI cable connected to MIDI-IN.
[fig.3] is shown on the LCD
(4) Connect REMOTE KBD IN and MIDI-OUT with a MIDI cable.
Is program version number shown on the LCD?
* If version number does not indicated, there is error in MIDI
circuit.
(5) MIDI Test ended correctly.
Disconnect MIDI cable, then Card Test program runs automatically.
3. Card Test:
(1) Is [fig.4] shown on the LCD?
* If [fig4] does not appear on the LCD:
[fig.7] shown on the LCD.
· Check IC41(3pin:XCWR, 6pin:XCRE) on the MAIN BOARD.
Is the level of XCWR and XCRE change during the test?
· Check IC40, RA27 on the MAIN BOARD.
Is there something wrong with card bus?
· Check IC41(8pin), IC42 on the MAIN BOARD.
Is there something wrong with decoder ?
· Check IC38(7pin) on the MAIN BOARD.
Is the voltage high level?
(2) Remove the card from card slot.
[fig.5] is shown on the LCD.
(3) Insert a card with write protected to card slot.
Is [fig.6] shown on the LCD?
TEST MODE
CPU DSP SRAM BAT
OK OK OK OK
[fig.1]
MESSAGE
CPU NG
DSP mn
SRAM NG
BAT NG
CHECK POINT
IC7 is defective.Replace IC7.
IC17, IC18, IC19, IC20, IC21, IC23, IC24, IC25, IC63,
IC64
(Refer to "Error Message in Memory Test" on another
page about "mn".)
IC11, IC13
Replace the battery.(BT1:CR2032)
[2] MIDI Test
MIDI IN WAITING
[fig.2]
[2] MIDI Test
REMOTE WAITING
[fig.3]
[3] Card Test
non-protected ok
[fig.4]
[3] Card Test
non-protected NG
[fig.7]
[3] Card Test
protected
[fig.5]
[3] Card Test
protected ok
[fig.6]
JP-8080
Jul, 1998