Korg DW-8000 Service Manual page 36

8.
ADJUSTMENT PROCEDURES
HELP KEY *<GRPH +H)
PROGRAM
NO. 11 12
13 14 15 16
17
18
21
ASSIGN
MODE POLY
1
POLY1 POLY1 POLY1 POLY1
POLY1
POLY
1
POLY
1
POLY1
PARA.
MEMORY
13
23 31 31 26
72 72
71 73
OSC1
oct
1 i
8 8 8
8
8
8
8
8 8
waveform
i
D
IL.
IS
15
IS IB
6 IS IS 15
16
level
13
31
n u n u
n u n u
31 31 31 31
A BEND
si.
13
n
u
n
u
n u n u
n u
n
u
n u
8
n
u
mode
IS
n
r\
n
/~1 r\
/n
/
1
n
/n
time
IS
n
u
n u
n
u
n u n
u
n u n u
u
n
u
in
n
u
n
u
n u n u n u
n u
n u
0
n
u
OSC2
oct
D
i
L. i
8 8 8 8
8
8
8 8
8
waveform
55
15
IE IS IB IB IS
16 15
15
level
53
n u
31
n u n
u
n
u
n u
n
u 8
n u
interval
53
l
l j f
,
i
< i
as
n u n u
n u
n u n u
n
u
n u
8
n-
u
NOISE
level
55
n u
8
n u n
u
3!
n u n u n
u
n
u
VCF
cutoff
3
i
53
S3
38 33 63 63 63 53 53
resonance
3,3
n u
n u
31
31
n
u
n
„
u
n
u
8
n
u
kbd
track
33
n u
n u n u n u
n
u
n u
n u n
u
n
u
polarity
33 /"I
r\
n n
/n
n n n
/"I
ee in*
33
n u n u n u n
u
n
u
n
u
n
u 8
n
u
VCF
attack
3
1
n u n u
n u
8
n
u
n
u
n
u
8
n
u
decay
35
n u
8
n u n
u
n
u
n u
n u n u
8
break.
p
33
n u n u n u
n u
n u
n
u
n
u 8
n
u
slope
33
n
u
n
u
n
u
n
u
n
u
n
u
n u
8
n
u
W5
n
u
n
u
n u
n u
n u n
u
n u
8 8
release
3B
8
n u n u n
u
n
u
n u n u
8
n
u
velocity
31
n
u
8
n u n u
n u
n u
n u
8
n
u
PROGRAM
NO.
1 1
v
12 13
14 15 16 17
IB 21
ASSIGN
MODE
POLY1 POLY1
POLY
1
POLY1 POLY1 POLY1 POLY1
POLY1 POLY1
PARA.MEMORY 13 23 31 31 26 72 72
71 73
VCA
attack
5!
n u
8
n u
8
n u
8
n u
n
u
8
decay
58
n u
0
n
u
n u n u n u
n u
in
iU
18
break,
p
S3
31
31 31 31 31
31
31
n
u
8
slope
S3
n u
D
n
u
n
u
n
u
n u
8
8
n u
sustain
55 31
31 3
1
3! 31 31
31
n u
n u
release
55
n u
D
n u
n
u
n u
8
n u
in
IU
in
iU
velocity
55
n u
0
n u n
u
n u n u
n
u
n
u
n u
MG
w.form
51
A A
A
A
A A
A A A
freq
55
n u
n u
n
u
n u n
u
n u
n u
n
u
n u
delay
53
n u
u
n u n
u
n
u
n
u
n u
n u
n u
osc
S3
n u
D
n u n u
n u n u n
u
n u n u
vcf
55
n u n u n u n u
n u n u
n u
n u
n u
BEND
osc
55
n
L.I
n u
n u n
u
n u n u n u
n u
n u
vcf
55 off
off
off
off off Off
off off off
ODL
time
n
l
n u
B
n
u
n u n u
n u n u
3
n u
factor
n
d
ii-
n u
D 8
n
u
n u
15
n u n u
n u
feedback
55
n u
D
n u n u
8
n
u
n u
IS
IS
frequency
83
n
LJ
D
n
u
n u n u
n u n u n u n u
55
n u
0
n
u
n u
n u
n
u
n u n u
n u
effect
lev
55
n u
0
n u n
u
8
IS IS IS
IS
PORTA
time
nn
G
8
n
u
n
u
n u
n u
8
n
u
n u
A.T osc mg
81
r>
u
n u n u
8
n u
8
n u
n
u 0
vcf
88
n u 0
n u
n u n
u
n
u
8'
n u
8
VCfl
83
n u
D
n u
8
n u
8 8
n u
8
Caution:
1)
This
product has
been throughly adjusted
at
the factory
before shipment.
Therefore never turn any Semi Fixed
VRs
other than those required for servicing.
2)
After turning
on power, wait
at least
15 minutes before
beginning
test
and adjustment.
3)
Be
sure to save the data
on
tape before loading
test
data
as
when
loading test data into
DW-8000,
previous
data
is
erased.
1.
Clearing
RAM
and Loading Test Data
1)
After keeping
DW-8000 power on
at least
15 minutes,
once turn
off
power and then
on
pressing
number
keys
[5]
and
[8]
.
2)
Connect
to
an Amplifier
etc.
and confirm
if
there
is
no
sound
to
check
all
data of
RAM
have been
erased.
3)
Load
Test
Data.
*For convenience,
save those chart
on
tape
as
Check and
Adjustment
procedure described
below
is
always
made
with the
data.
2.
D/A
converter,
CV
Check and Adjustment
Procedure
(KLM-661)
1)
Turn
off
power and
then
on
pressing
number
keys
[5]
and
[6]
at
the
same
time.
2)
Confirm
if
UrEF
(Voltage
reference)
is
displayed
and
becomes
Test
Mode
1
.
3)
Connect
a Digital
Voltmeter
to Test Points:
[TP-AG],
[TP-REF1]
allocated
in left
side
of the board.
GND
side
-
[TP-AG]
,
+side
- [TP-REF1]
4)
Memorize
the value of
Digital
Voltmeter and then
connect
as
follows.
+side
- [TP-CV]
5)
Adjust
VR1
to obtain the
same
value
as
one
of +side
-
[TP-REF1]
.
Remarks: Adjustment
value
is
in
range of
3.29V -
3.64V.
Note: Test
Mode
1
cannot be cancelled
till
being
reset.
(Power
OFF
- ON)