MU100
18
PREPARATIONS
The following measuring instruments and jigs are
necessary during the test.
Measuring instruments :
Audio signal generator, oscilloscope,
amplifier/speaker system, etc.
Jigs :
MIDI cables, etc.
The test "Not using" is written in the column of remarks
and is not performed on the MU100.
When performing the tests numbered 21 to 24, connect the
Plug-in Board to the connector CN1of the MU100 before
starting the test.
A. HOW TO ENTER THE TEST PROGRAM
While pressing the [PLAY] and the [MUTE/SOLO]
buttons, turn the MU100 POWER switch on.
When the test program is initiated, the version of the
program ROM will appear on the LCD.
(#.##=Version number of the MU100 program ROM)
After displaying the version message shown above, the
following display will appear.
The factory settings should be performed before any test
when a circuit board or the backup battery is replaced. The
factory settings are performed by turning the MU100
POWER switch on while pressing the [UTIL] and the
[ENTER] buttons.
B. PROCEEDING THROUGH THE TEST
When entering the test program, the following display will
appear.
Use the [SELECT
] and [SELECT
] buttons to move
through the various tests of the test program.
After having selected the test, press the [ENTER] button to
start the test in succession from that number.
Pressing without selecting the test will start the test from
"1. SRAM test".
TEST SELECTION WHEN AN ERROR IS
DETECTED
In each test, if an NG (No Good) error is detected, press the
[EXIT] button. The MU100 will then wait for the entry of a
test number.
1.
SRAM TEST
The Write/Read check for SRAM (IC 9 and IC 10) will be
performed automatically on the following address.
IC9, IC10= h'200000 ~ h'20FFFF (16-bit Data Bus)
DISPLAY OF TEST RESULTS
OK
NG
TEST PROGRAM
No.
A
B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Test
TEST ENTRY
PROCEEDING THROUGH THE TEST AND
SELECTION WHEN AN ERROR IS DETECTED
SRAM
BATTERY
LCD ALL DOTS ON
SWITCH & LED
DIAL
MIDI 1
MIDI 2
HOST SELECT
TO HOST TX/RX
WAVE ROM
1 kHz OUTPUT(L)
1 kHz OUTPUT(R)
1 kHz INDIV.OUT1
1 kHz INDIV.OUT2
INPUT HIGH
INPUT LOW
MEG & DRAM
64 SOUNDS OUTPUT
FACTORY SETTINGS
EXIT
PB1 NAME
PB1 RAM
PB1 MIDI IN
PB1 MEL
PB2 NAME
PB2 RAM
PB2 MIDI IN
PB2 MEL
Remarks
SRAM Read/Write
A/D check on CPU
SWITCH ON/OFF & LED ON/OFF
Not using
Connect MIDI IN A to MIDI OUT
Connect MIDI IN A to MIDI OUT
Slide HOST SELECT
Factory use
WAVE ROM READ
Using measuring instruments
Using measuring instruments
Not using
Not using
Using measuring instruments
Using measuring instruments
Using measuring instruments
By listening
Circuit Board test of CN 1
Circuit Board test of CN 1
Circuit Board test of CN 1
Circuit Board test of CN 1
Not using
Not using
Not using
Not using
MU100 TEST MODE
Ver#. ## ##-###-##
TEST END
After displaying the test result on the LCD, the test will be
completed and proceed to the next test. If an error is
detected during the test, refer to section B, "PROCEEDING
TROUGH THE TEST". All SRAM data is preserved.
2.
BATTERY TEST
This test checks that the voltage of the battery is greater
than 2.9 V and less than 3.4 V.
DISPLAY OF TEST RESULTS
OK
NG
TEST END
After displaying the test result on the LCD, the test will be
completed and proceed to the next test. If an error is
detected during the test, refer to section B, "PROCEEDING
TROUGH THE TEST".
3.
LCD-ALL DOTS "ON" TEST
Check that all dots of the LCD change to black.
After checking the back light, press the [SELECT]
button to control the LCD contrast in eight (8) steps.
TEST END
Press the [ENTER] button. The MU100 will then
proceed to enter the following test.
If the [EXIT] button is pressed, the MU100 will wait
for the entry of the test number.
4.
SWITCH & LED TEST
Press the panel switches consecutively from the [PLAY]
button to the [VALUE+] button, according to the order
indicated on the LCD. At this time, check that the LED of
the testing switch is lighted up.
(e.g. when checking the [ENTER] switch)
The switch & LED test proceeds in the order as below.
[ P L A Y ]
[ U T I L ]
[ M O D E ]
[ E D I T ]
[EFFECT]
[EQ]
[MUTE/SOLO]
[ENTER]
[EXIT]
[PART-]
[SELECT
]
[VALUE-]
[PART+]
[SELECT
]
[VALUE+]
If the switch is OK, a beep will sound and the test will
proceed to the next switch. If the wrong switch is pressed,
the program does not proceed and no sound will heard.
DISPLAY OF TEST RESULTS
OK
NG
no appearing
TEST END
When the button [VALUE+] is pressed, if the test is OK, the
test will be completed and proceed to the next test.
If an error is detected during the test, turn the POWER off.
5.
DIAL TEST
This test is not performed on the MU100. After pressing
the [EXIT] button, press the [SELECT
] or [SELECT
]
button to select the next test.
6.
MIDI 1 TEST
After connecting the [MIDI IN A] to the [MIDI OUT] and
the [MIDI THRU] to the [MIDI IN B] via MIDI cables,
execute the test. The [HOST SELECT] switch must be set
at the [MIDI] during the test.
DISPLAY OF TEST RESULTS
OK
NG
TEST END
If the test is OK, "OK" will be displayed on the LCD and
the test will be completed and proceed to the next test. If an
error is detected during the test, refer to section B,
"PROCEEDING TROUGH THE TEST".
7.
MIDI 2 TEST
After connecting the [MIDI IN A] to the [MIDI OUT] and
the [MIDI THRU] to the [MIDI IN B] via MIDI cables,
execute the test. The [HOST SELECT] switch must be set
at the [MIDI] during the test.
DISPLAY OF TEST RESULTS
OK
NG
02 BATTERY
04 SWITCH & LED
[PLAY]
04 SWITCH & LED
[ENTER]
02 BATTERY
ok
02 BATTERY
err
04 SW & LED
ok
06 MIDI 1
07 MIDI 2
06 MIDI 1
ok
06 MIDI 1
err
07 MIDI 2
ok
07 MIDI 2
err
01 RAM
01 RAM
01 RAM
01 RAM
ok
01 RAM
err
