Akai S1100 Service Manual

3-3-2.
WAVEFORM
MEMORY
TEST
1)
During the
HARDWARE TEST mode,
press the “F2/B” button.
The
following display
will appear
on the
LC-display(refer
to
Fig. 3-8).
2.
WAVEFORM
MEMORY TEST
BANK
1
2
3
4
DAT A
>1514131211109 8 7
65432
1 0
RESULT
testing
3 5 s e c
[1
cpu][2wav][3dac][4of
f][5adl][6adr][7adm)[boot]
Fig.
3-8
2)
After 35
seconds the
LC-display will show
the message as
shown Fig.
3-9.
If this message does
not appear
on the LC-
display, it
means
a
malfunction in the waveform
memory circuit.
Check the
waveform memory
circuit and LSI.
2.
WAVEFORM MEMORY TEST
BANK
1
2
3
4
DATA>1 5141 31 21
11098765432
1
0
RESULT
OK
NO CARD?
NO CARD?
NO
CARD?
[1
cpu][2wav][3dac][4of
f][5adl][6adr][7adm][boot]
Fig.
3-9
3-3-3.
ADC
OFF-SET
NULL
CONFIRMATION
1)
During the
HARDWARE TEST mode,
press the “F5/E”
button. The
following display
will appear on the
LC-display(refer
to
Fig.
3-1
0).
5.
LEFT
ADC
OFFSET NULL
SET
MIN. REC.
LEVEL,
LOW GAIN,
SHORT
INPUTS
ADJUST
LEFT
INPUT
OFFSET TRIM
TO
ZERO
THE OFFSET:-
0
i
1
1
+
1 t
[1
cpu][2wav][3dac][4of
f)[5adl][6adr][7adm][boot)
ARDWARE
TEST
Fig.
3-10
2)
Next,
press
the “F6/F” button.
The following
display will appear
on the LC-display
(refer to Fig.
3-1
1
).
1
HARDWARE
TEST|
6.
RIGHT ADC
OFFSET NULL
SET MIN. REC.
LEVEL, LOW
GAIN,
SHORT
INPUTS
ADJUST
RIGHT
INPUT
OFFSET
TRIM
TO ZERO THE
OFFSET:-
0
I I
1
+
1
t
[1
cpu][2wav][3dac][4of
f][5adl][6adr][7adm][boot)
Fig.
3-1
1
•
Although the
display instruct to
adjust the OFF-SET
TRIM, this is
confirmation
only. No adjustment
is necessary.
3-4.
DAC
OFF-SET
ADJUSTMENT
(PRECAUTIONS BEFORE
ADJUSTMENT)
•
For
connection of test
equipment
refer to Fig.
3-1
.
•
Set the MAIN
VOLUME to the
maximum
position.
•
Set the REC
LEVEL to the
maximum
position and the REC
GAIN switch to the “MID”
position.
•
Let the unit
warm
up
for at
least 5
minutes before
proceeding with the
following adjustments.
•
Be sure to
connect the
plugs to the L
CH and
R CH outputs,
otherwise L-R mixed output
will
be
obtained
from
both
outputs.
SERVICE MANUAL
7

Akai S1100 Specifications

General

Type	Digital Sampler
Polyphony	32 voices
Sampling Rate	44.1 kHz
Bit Depth	16-bit
Memory	2 MB (expandable to 32 MB)
Display	Backlit LCD
Effects	No
Outputs	8 individual outputs, stereo output
MIDI	In, Out, Thru
Storage	SCSI