14
SD-80
Actions to be taken when an
error occurs
When one of the following error messages appears, turn off the power of the
SD-80, take the actions for the respective error as follows, and restart updating.
LOADING incomplete
Cause:
Part of the updating file was not loaded properly.
Action:
Turn off the power of the SD-80. Then turn it on again and restart updating.
MIDI block chksum
MIDI SysEX chksum
Cause:
Checksums of the exclusive messages received disagreed.
Connection between the USB cable and the MIDI cable may be incomplete.
The currently used SMF replay application may not output data properly.
The currently used MIDI sequencer may not output data properly.
Action (by USB)
Check if the USB cable is broken, or insecurely connected.
If a similar message appears, change the SMF replay application.
Action (by MIDI) :
Check if the MIDI cable is broken, or insecurely connected.
If a similar message appears, change the sequencer.
MIDI FIFO full
MIDI buffer full
Cause:
Since a large amount of MIDI data was received in a short time, processing
could not be done.
Action:
Check if a large amount of MIDI data was sent in a short time.
MIDI overrun
MIDI framing
MIDI parity
MIDI hardware break
Cause:
MIDI communication was not done properly.
Action:
Check if the MIDI transfer rate of the MIDI device connected to the SD-80 is
proper.
If an error message appears even after the above action, there may be a
problem with the SD-80’s CPU Check the CPU circuit and related circuits of
the SD-80.
FLASH Vpp low
Cause:
The memory (IC3) write voltage on the main board is low.
Action:
Check the IC3 circuit and related circuits.
FLASH ID code
Cause:
Part of the memory (IC3) on the main board is wrong.
Action:
Replace it with the correct one (#******** LH28F160BJE-BTL80).
FLASH protected
FLASH lock
Cause:
The memory (IC3) on the main board is in write protected status.
Action:
Check if the No.13 and 14 pins of the IC3 are at the high voltage level (3.3
V).
If the voltage is properly controlled, it is possible that IC3 is broken.
TEST MODE
Necessary items
· Headphones
· Two MIDI cables
· Monitor speaker (with built-in amplifier)
· A device (DAT recorder, Roland UA-30 or equivalent) equipped with digital
INPUT terminals (optical or coaxial)
Selecting the Test Mode
The test mode can be selected by turning on the power while holding down
the [INST], [PART>] and [SHIFT] buttons.
Keep holding down these buttons until the version number appears.
* This operation is the same as for checking the version number.
* To end the test mode, turn off the SD-80’s power.
Test item list
The test mode items are as follows.
When one test ends, press the [PART>] button to go to the next test item.
To go back to the previous test, press the [PART<] button.
1. Version check
2. Device check
3. MIDI check
4. LCD check
5. SW/LED check
6. Encoder check
7. Sound check
8. Effect check
9. Factory reset
* The USB functions cannot be checked in the test mode.
To check the USB functions, install the driver on the personal computer and see
if the SMF can be played correctly.
(See “DATA SAVING AND LOADING” for the driver installation procedure).
TEST ITEM DETAILS
1.
Version check
The version of the program ROM appears.
The version number appears at the bottom left of the screen.
fig.3-1_70
2.
Device check
In this test item, the following ICs are checked automatically. The check
results appear on the screen.
fig.3-2_70
Device names and numbers on the main board
Flash Memory IC3
Wave ROM A IC28
Wave ROM B IC29
XV #1 IC19,IC26
XV #2 IC27,30
Service Notes(A4)e 14 ページ ２００２年７月１６日 火曜日 午後７時１１分
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