Hardware Test - Akai S1100 Service Manual

3-3.
HARDWARE
TEST
THE
HARDWARE
TEST
MODE
*
This
test
mode
is
used
for inspecting the
unit.
[HOW TO
SET THE
HARDWARE
TEST MODE]
1)
Turn on
the power, press the
"MARK/#" and "NAME"
buttons
at
the
same
time
(all
red
indicators
will light),
then press
the
"+/
<
" button.
2)
The
following
menu
(refire to Fig.
3-4)
will
appear on
the LC-display
when
the
model
S1 100
is
set to the
HARDWARE
TEST
mode.
I
HARDWARE
T
E
ST
ADJUST CLOCK
RATE BEFORE SETTING
THE
DAC/ADC TRIMS
[1
cpu][2wav][3dac][4of
f][5adl][6adr][7adm][boot]
Fig.
3-4
[THE
PROGRAM NUMBERS AND PROGRAM
NAMES]
[HOW TO RELEASE FROM
THE
HARDWARE
TEST MODE]
PROG. No
S1
1
00
HARDWARE
TEST
CONTENTS
CPU
MEMORY
TEST
WAVEFORM MEMORY
TEST
NOT USED
NOT USED
~
LEFT
ADC
OFF-SET NULL
RIGHT
ADC
OFF-SET NULL
NOT USED
*
During the
HARDWARE
TEST
mode, press the "F8/H"
button.
*
Although displayed, the contents are disregarded.
Fig.3-5
3-3-1
.
CPU
MEMORY
TEST
1)
During the
HARDWARE
TEST
mode,
press
the "FI /A" button.
The
following display
will
appear on
the LC-display(refer
to Fig. 3-6).
HARDWARE
TEST]
1.
CPU
MEMORY TEST
BANK DAT
A
>1514131211109 8
7 6
543
2
1
0
RESULT
1
2
[1
cpu][2wav][3dac][4of f][5adl][6adr][7adm][boot]
Fig.
3-6
2)
A
few second
later,
the LC-display
will
show
the
message
"OK" as
in
Fig.
3-7.
If
the
message
"OK" does
not
appear on
the LC-display,
it
means
a malfunction
in
the
memory
circuit. In this
case check
the
memory
circuit
and
LSI.
HARDWARE TEST
1.
CPU MEMORY TEST
BANK
DATA>1
51 41 31 21
11098765432
1
0
RESULT
1
OK
2
OK
[1
cpu][2wav][3dac][4of
f][5adl][6adr][7adm][boot]
Fig.
3-7
SERVICE
MANUAL