Korg DRV-1000 User manual
DIGITAL
REVERB
DRV-1000
SERVICE
MANUAL
CONTENTS
1.
SPECIFICATIONS.
1
2.
STRUCTURAL
DIAGRAM.
2
3.
BLOCK
DIAGRAM
.
4
4.
CIRCUIT
DIAGRAM
.
5
5.
P.C.
BOARD.
10
6.
SYSTEM
EXPLANATION.
12
7.
ADJUSTMENT
PROCEDURE
.
13
8.
PARTS
LIST.
14
KORG
INC.
TOKYO/,IAPAN
1.
SPECIFICATIONS
•
Input.Input
level
-20dBm
Impedance
10k£2
Max.
clip
level
+5dBm
•
Output.
MIX
Lch
MIX
R
ch
Output
level
-10dBm
-IGdBm
Impedance
1k^2
1k^2
Max.
clip
level
+5dBm
+5dBm
•
Frequency
response
.Direct
20Hz
~
20kHz,
±1dB
Reverb
20Hz
~
10Hz,
+
1dB,
-3dB
•
Dynamic
range.Direct
95dB
(1HF-A)
Reverb
80dB
(IHF-A)
•
Distortion
..Direct
0.01%
Reverb
0.05%
•
Quantization.
16
bit
A/D
linear
conversion
{1
ch)
16
bit
D/A
linear
conversion
(2
ch)
•
Power
supply.
117
V,
220V,
or
240V
50/60Hz
7W
•
Dimension.
482mm
(W)
x
290mm
(D)
x
44mm
(H)
111
19"
(W)
x
11.4"
(D)
x
1.7"
(H)
1U
•
Weight..3.6
kg
7
lb
15-3/4
oz
*
Specifications
subject
to
change
without
notice.
|
PART
NO.
PART
NAME
PART
CODE
n
FRONT
PANEL
CHASSIS
FRONT
CHASSIS
64080700
64080400
64080600
4
HEATSINK
64063800
5
BUSHING
PLATE
6
SHIELDING
PLATE
63000300
7
KNOB
62017600
8
RUBBER
FEET
50008700
9
BUSHING
10
POWER
TRANSFORMER
11
P.C.
BOARD
KLM-839
34083900
12
P.C.
BOARD
KLM-840
34084000
13
P.C.
BOARD
KLM-841
34084000
14
P.C.
BOARD
KLM-B42
34084000
15
P.C.
BOARD
KLM-843
34084300
16
SUPPORT
SPACER
54008700
17
PUSH
SW
KNOB
62017700
PART
NO.
|
SCREWS.
NUTS
&
WASHERS
FEB
ZMC
3x6
FEBZMC
4x8
FE
B
BZMC
4x10
TP2GBBZMC
3x8
FHNZMC
4
VN
ZMC
7
VN
ZMC
9
TWU
ZMC
3
STRUCTURAL
DIAGRAM
PART
NO.
SCREWS
&
WASHER
TP2GB82MC
3x6
FE
F
BZMC
3x8
TWU
ZMC
3
FRONT
PANEL
CHASSIS
COVER
FRONT
PANEL
BOARD
NAME
PLATE
64080700
64080400
64080500
64063700
68600700
iNEUT
-20dB
SIGNAL
LEVEL
CO
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r-
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OUTPUT
L/MONO
D
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6
I
INPUT
|
OUTPUT
1
l
/MONO
|
[output
r~1
KLM-840/841/842
VR2
20KB
X2
OUTPUT
I
MIX
♦
X-
SHIELDING
WIRE
-7-
—
8
—
CN6B
HNS-6
55
LC1-LC3
0SS310-550223S
T
101
TA803
AC-HO"
AC-CO
100V/117V
TB803
KLM-843
PCM54HP
KLM-839
6.
SYSTEM
EXPLANATION
1.
PCB
CONSTRUCTION
This
digital
reverb
DRV-1000
is
designed
very
compact,
and
consists
of
following
3
PCBs.
1)
Analog
PCB
KLM-840
As
shown
in
the
circuit
diagram,
the
main
circuitries
are;
PRE-EMPHASIS,
DE-EMPHASIS,
LOW
PASS
FILTER,
SAMPLE/HOLD,
COMPUTER
and
DAC.
2)
Digital
PCB
KLM-839
Process
vocal
data
by
the
custom
gate
array.
3)
Power
PCB
KLM-843
Supply
±5V.
to
the
analog
circuit,
and
+5V.
to
the
digital
circuit.
2.
REVERB
PATTERN/TIME
SETTINGS
PATTERN
NUMBER
PATTERN
TIME
NUMBER
|
2
3
4
5
6
7
8
1
SMALL
HALL
0.7*
1.2*
1.8*
2.4*
3.0*
3.6*
4.4*
5.2*
2
LARGE
HALL
1.2*
1.6*
2.1*
2.6*
3.4*
4.6*
7.0*
10.0*
3
ROOM
0.20*
0.23*
0.26*
0.29*
0.31*
0.34*
0.37*
0.40*
4
Garage
0.7*
0.9*
1.2*
1.5*
1.8*
2.2*
2.6s
3.2*
S
VOCAL
PLATE
0.7*
1.0*
1.3*
1.7*
2.0*
2.3*
2.7*
3.4*
6
INSTRUMENTS
PLATE
0.7*
0.9*
1.1*
1.3*
1.6*
1.8*
2.1*
2.6*
7
GATED
REVERB
150m*
180m*
220m*
260m*
290m*
320ms
360m*
400ms
a
REVERSE
ISOrrw
180m*
210m*
240m*
270m*
290m*
320m*
350m*
Pattern/time
data
indicated
in
above
table
are
stored
in
a
256Kbit
EPROM
on
KLM-839,
and
by
the
combinations
of
the
patterns
(1
-
8),
time
(1-8)
and
H.
DAMP
ON/OFF,
the
upper
address
is
determined
and
accordingly
128
ways
of
the
effects
will
be
gained
in
total.
Following
is
setting
logic
of
the
patterns
and
the
time
swit¬
ches
against
the
address
of
the
EPROM.
PI
P2
P3
P4
P5
P6
P7
P8
T1
T2
T3
T4
T5
T6
T7
T8
A
8
L
L
L
L
L
'L
L
L
L
H
L
H
L
H
L
H
A
9
L
L
L
L
L
L
L
L
L
L
H
H
u
l
H
H
A10
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
All
L
H
L
H
L
H
L
H
L
L
L
L
L
L
L
~
A12
L
L
H
H
L
L
H
H
L
L
L
L
L
L
L
L
A13
L
L
L
L
H
H
H
H
L
L
L
L
L
~
~
A14
H
H
H
H
H
H
H
H
H
H
H
H
~hT
H
H
Note:
1
P
=
Pattern,
T
=
Time
2
When
the
H.
DAMP
is
on,
A14
must
be
all
"L"
re¬
gardless
of
the
switch
settings.
3
At
the
LONG
ON
setting,
A8
-
A10
except
PAT¬
TERN
7
&
8
(with
GATED
REVERB
and
RE¬
VERB)
should
be
"H".
3.
O
U
T
L
I
N
E
OF
GATE
ARRAY
The
DRV-1000
has
adopted
two
newly
developed
GATE
ARRAYS.
We
give
an
explanation
on
the
each
array
here.
1)
MB652109
This
gate
array
consists
of
SAR
(Successive
Approximation
Resistor),
reverbration
process
circuit
(resistors
of
24
bit,
adder,
multiplier
of
24
bit
x
6
bit)
and
BUS
circuit
for
outer
memory.
Main
function
here
is
calculation
of
vocal
data.
Following
are
the
functions
of
each
terminal.
TERMINAL
NAME
INPUT/
OUTPUT
FUNCTION
DAI~
DAIS
0
DATA
OUTPUT
TERMINAL
OUTPUT
to
OAC
COUT
1
DATA
INPUT
TERMINAL
INPUT
from
the
comparator
eoc
0
Selection/control
signal
output
of
A/D
terms
or
D/A
terms
SEEC
1
Internal
Selector
terminal
TEST:
Mode
for
direct
output
of
A/D
data
to
D/A
NORMAL:
To
output
internally
processed
data
during
the
D/A
period
according
to
the
EOC
signal
OR1
~
DR24
I/O
IN/OUTPUT
terminal
for
24
bit
vocal
data,
and
the
data
bus
among
the
ORAMs
(IC13-181
on
KLM-839.
LTAC
-
SEDC
1
Input
terminal
of
control
signals
for
calculation
sent
from
MB654122
2)
MB654122
This
LSI
holds
a
function
to
output
all
the
necessary
tim¬
ing/control
signals
for
calculation
in
accordance
with
the
panel
operations
such
as
PATTERN,
TIME
settings
and
etc.
The
functions
of
each
terminal
are
as
follows.
TERMINAL
NAME
INPUT/
OUTPUT
FUNCTION
x
1
1
Generation
of
22MHz
SYSTEM
CLOCK
by
operating
the
crystal
x2
0
oscillator
SHAD,
SHL,
SHR
0
Output
the
control
signals
for
sample/hold
LTAC~SEDC
0
8
patterns
x
8
times
x
2
H.
DAMP
ON/OFF
Output
terminal
for
process
patterns
DRAG
~
DRA7
0
Address
output
terminal
for
DRAM
RAS,
CAS,
WE,
OE
0
Control
signal
output
terminal
in
DRAM
READ/WRITE
MEOO
~
MED7
(
Input
terminal
for
panel
switch
data
ME
AO
-
MEA7
0
Address
output
terminal
to
EPROM
RESE
1
Input
terminal
for
internal
counter
reset
4.
M
E
M
O
R
Y
CONSTRUCTION
To
memorize
24
bit
data
for
operation,
6
Dynamic
RAMs
of
16K
x
4
bit
compose
the
memory.
—
1
2
—
7.
ADJUSTMENT
PROCEDURE
N.
B.
This
product
is
perfectly
adjusted
in
the
factory
before
the
shipment.
Do
not
touch
the
trimmer
unless
repair
or
further
adjust¬
ment
is
required.
D/A,
A/D
OFFSET
ADJUSTMENT
(KLM-840)
1.
SETTING
INPUT
LEVEL
OUTPUT
LEVEL
PATTERN
TIME
INTERNAL
TEST
SW
0
*
*
*
T
(NOTE)
T
;
TEST
MODE
N
;
NORMAL
MODE
*
;
Free
setting
2.
ADJUSTMENT
PROCEDURE
1)
Connect
an
oscilloscope
(DC
0.5v/div,
2pis/div)
to
TP1
on
the
KLM-840.
Both
GNDs
have
to
be
also
connected.
2)
Confirm
whether
the
waveform
on
the
oscilloscope
is
the
good
shape
or
not
referring
to
the
chart
below.
3)
In
case
it
does
not
show
any
regular
waveform,
please
adjust
with
VR3.
Fig-1
NOTE:
Trigger
from
TP2
(IC9
PIN
9)
will
be
synchronized
on
the
oscilloscope
by
connecting
to
its
EXT
TRIG
IN,
and
which
simplify
the
measurement
of
the
waveforms.
If
it
is
not
properly
adjusted,
noises
may
occur
in
changing
the
LONG
ON.
—
13
8.
PARTS
LIST
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q'TY
CARBON
RESISTORS
10009000
1/4Y
on
KLM-843
3
10416000
1/6JTP
on
KLM-840
13
10416310
1/6JTP
100a
1
10416347
1/6JTP
470n
KLM-839
1
10416351
1/6JTP
51
on
3
10416368
1/6JTP
680n
1
10416410
1/6JTP1.0K
KLM-840
4
10416420
1/6JTP
2.OK
7
10416447
1/6JTP4.7K
1
10416451
1/6JTP
5.1
K
6
10416475
1/6JTP
7.5K
6
10416510
1/6JTP
10K
KLM-839
13
KLM-840
10416511
1/6JTP
UK
10416513
1/6JTP
13K
10416516
1/6JTP
16K
10416520
1/6JTP
20K
10416522
1/6JTP
22K
10416524
1/6JTP
24
K
10416533
1/6JTP
33K
10416547
1/6JTP
47K
10416568
1/6JTP
68K
10416582
1/6JTP
82K
1
10416610
1/6
JTP
100K
KLM-839
4
10416622
1/6JTP
220K
■
1
10416710
1
1/6JTP1.0M
1
KLM-840
1
10416715
1/6JTP
1.5M
KLM-839
1
10416720
1/6JY
2.0M
1
METAL
FILM
RESISTORS
12514511
1/6
5.1
IK
KLM-840
12515150
1/6
15.0K
12516100
1/6TP
100K
BLOCK
RESISTORS
13510510
RKC1/8B10J
10K
KLM-839
1
13514510
RKC1/8B14J
10K
_
.
.
_l
1
MYLAR
CAPACITORS
~
■
20401410
50V
O.OOlpF
KLM-840
16
20401422
50V
0.0022pF
3
2040A456
50V
0.0056*aFF
i_
3
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q’TY
20401556
50V
0.056pF
KLM-840
_
3
CERAMIC
CAPACITORS
21355470
BOV
0.047juF
KLM-843
3
21451300
BOV
3pF
TP
KLM-840
1
21452100
50V
10pF
TP
KLM-839
1
21452220
50V
22pF
TP
2
21452470
50V
47pF
TP
3
21453220
50V
220pF
TP
1
KLM-840
1
21455100
50V
0.01
pF
TP
2
21455470
50V
0.047juF
TP
KLM-839
18
KLM-840
5
EMI
FILTERS
-1
21950100
—
DSS310-55D223S
KLM-839
3
KLM-840
2
KLM-843
3
ELECTROLYTIC
CAPACITORS
”
...
"
1
23507410
16V
lOOOpF
KLM-843
2
23507422
16V
2200juF
1
23547322
16V
220juF
3
25402247
10V
47pF
KLM-839
4
KLM-840
1
25402310
10V
lOOjuF
3
25402322
10V
220pF
1
25404147
25V
4.7pF
11
25404210
25VlOpF
17
25406110
50V
IpF
KLM-839
2
KLM-840
4
25464147
25V
4.7pF
1
PPCs
—
26403322
100V
220pF
_
KLM-840
3
DIODES
31001500
SR1K-2
KLM-843
31401300
1SS-133
KLM-839
KLM-840
PARTS
NAME
P.C.
IDENTIFICATION
NO.
SPECIFICATIONS
BOARD
_
FUNCTION
PARTS
CODE
31010100
1B4B41
31201400
PR
3932S
31206800
PG3932SY
BRIDGE
DIODE
KLM-841
KLM-S42
32001069
32001086
32001101
32001123
32001124
32004039
32004113
32004114
32004115
32007023
32009001
32009012
32009022
32009032
32009054
32012032
32012033
32013001
32021011
32036001
74HC32C
KLM-839
MPD41416C-12
74HC08C
MPD27C256D-15
yPD74HC1lC
HD-14053BP
KLM-840
HD14538BP
KLM-839
HD74HC175P
HD74HC7266P
BA6124
KLM-840
NJM-4558D-V
NJM-31
ID
NJM-4558D-D
NJM-78M05A
KLM-843
NJM79M05
MB652109PF
C5000AV
KLM-839
Gate
array
MB654122PF
2600AV
Gate
array
PST-518
TL-072
KLM-840
PCM54HP
CERAMIC
OSCILLATOR
33504300
HC-49/m
22.1184MHz
KLM-839
1
P.C.
BOARDS
34083900
KLM-839
KLM-839
1
34084000
KLM-840/841/842
KLM-840
1
34084300
KLM-843
KLM-843
1
SEMI
FIXED
VR
35003310
RH0621C14J
10K
KLM-840
1
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q'TY
VRs
1-
1
1-
36020200
RK1631110RGXA
20KB
KLM-840
36020300
RK16312AOAHQA
20KBX2
ROTARY
SWs
37003400
SRRS18006A
KLM-839
SLIDE
SW
37306200
SSSS212A
KLM-839
PUSH
SW
37509000
SPUN22099A
KLM-839
POWER
TRANSFORMERS
40010500
TA-803
40010600
TB-803
117
US
100
JP
117
EX
117
CN
220
GE
220
SE
240
AF
240
AU
240
GE
220
WG
220
FR
240
UK
220
SC
PHONE
JACKS
45404300
YKB21-5012
KLM-840
46411601
250V0.4AUL
46411701
250V0.5AUL
117
US
100JP
117
EX
117
CN
117
US
100
JP
117
EX
117
CN
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q'TY
46412003
250V
1.0A
UL
117
US
1
100
JP
1
117
EX
1
117
CN
1
46461101
250V
T125MA
220
GE
1
220
SE
1
240
AF
1
240
AU
1
240
GE
1
220
WG
1
220
FR
1
240
UK
1
220
SC
1
46461401
250V
T250MA
220
GE
2
220
SE
2
240
AF
2
240
AU
2
240
GE
2
220
WG
2
220
FR
2
240
UK
2
220
SC
2
46461701
250V
T500MA
220
GE
1
220
SE
1
240
A
F
1
240
AU
1
240
GE
1
220
WG
1
220
FR
1
240
UK
1
220
SC
1
HARNESSES
47095000
HNS-850
KLM-842
i
47095100
HNS-851
KLM-840
i
47095200
HNS-852
i
47095300
HNS-853
i
47095400
HNS-854
KLM-841
i
47095500
HNS-855
KLM-843
i
47095600
HNS-856
KLM-840
i
CONNECTOR
TOPS
B3B-XHA
KLM-840
i
B5B-XHA
KLM-839
2
B6B-XHA
1
B11B-XHA
1
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
47131300
B13B-XHA
KLM-839
RTB-1.5-5
28P
DICA-28CTI
BASE
PIN
KLM-843
1C
SOCKET
KLM-839
RUBBER
FEET
S-N5057
#01
54000300
54000400
54000500
LC-2-G-YELLOW
FUSE
HOLDERS
KLM-843
BUSHINGS
SR-4K-4
117
US
100
JP
117
EX
SR-5P-4
240
AU
SR-6W-1
220
GE
220
SE
240
AF
240
GE
220
WG
220
FR
240
UK
220
SC
SR-6N3-4
117
CN
TEST
PIN
KLM-840
WIRE
BANDS
B-1725K
ISOLATING
WASHER
KLM-843
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q'TY
CORD
BAND
54007600
NO.
113
BLACK
1
SUPPORT
SPACER
54008700
PS-3NS
1
1
RADIATION
SHEET
56500300
BFG-30
KLM-843
SPACERS
TYPEX
NO.
10
L=11.5
KLM-841
KLM-842
i
GND
SEALS
58001900
|
220
GE
1
220
SE
1
240
AF
1
240
AU
1
240
GE
1
220
WG
1
220
FR
1
240
UK
1
220
SC
1
WIRING
CAUTION
58004000
LARGE
NO.
1
|
240
UK
1
AC
CORDS
60000102
KE-1044B
PVC.
75
100JP
1
60000201
SPT-2
18AWG
SU426-58
117
US
1
117
EX
1
60000301
CLASS1
(SU429-58)
220
GE
1
240
GE
1
220
WG
1
240
UK
1
220
SC
1
60000401
SAA
(SU428-58)
3X.75
240
AU
1
60000501
BS
PLUG
(SU431A-58)
240
AF
1
60000901
SEV
(SU430-58)
220
SE
1
60001301
KP-4819D
GTCE-3.75
220
FR
1
60002000
SJT
(SU338-56)
18/3MM
117
CN
1
PARTS
PARTS
NAME
CODE
SPECIFICATIONS
P.C.
IDENTIFICATION
NO
BOARD
FUNCTION
62017600
62017700
UE202011
FOR
SPUN
SHIELDING
PLATE
63000300
FRONT
PANEL
BOARDS
64063700
2
HEAT
SINK
64063800
KLM-843
1
BUSHING
PLATES
64064110
NO.
3
117
US
1
220
GE
1
j
220
SE
1
240
AF
1
240
AU
1
240
GE
1
220
WG
1
100JP
1
117
EX
1
220
FR
1
240
UK
1
220
SC
1
64064120
NO.
4
117
CN
1
CHASSIS
64080400
1
COVER
1
PARTS
CODE
PARTS
NAME
SPECIFICATIONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q'TY
FRONT
PANEL
64080700
1
LUGS
67200201
4PHY
N3
220
GE
1
220
SE
1
240
AF
1
240
GE
1
220
WG
1
220
FR
1
240
UK
1
117
CN
1
220
SC
1
SERIAL
NO.
SEAL
68599999
1
NAME
PLATES
68600700
117
US
1
220
GE
1
220
SE
1
240
AF
1
240
AU
1
240
GE
1
220
WG
1
117
EX
1
220
FR
1
240
UK
1
117
CN
1
GUARANTEE
SEAL
68602500
100JP
1
SCREWS
70160308
FE
F
BZMC3X8
4
70530306
FE
BZMC3X6
16
70530308
FE
B
ZMC
3X8
KLM-843
5
70530408
FE
B
ZMC
4X8
1
70560308
FE
B
BZMC3X8
4
70560408
FE
B
BZMC4X8
3
72560308
TP2G
B
BZMC3X8
_
19
19
PARTS
CODE
PARTS
NAME
SPEC!
FI
CAT
IONS
P.C.
BOARD
IDENTIFICATION
NO.
FUNCTION
Q'TY
NUTS
77030400
FHNZMC4
3
77130300
HN1ZMC3
KLM-843
3
WASHERS
78430300
TWUZMC3
11
78430400
TWU
ZMC
4
220
GE
1
220
SE
1
240
AF
1
240
GE
1
220
WG
1
220
FR
1
240
UK
1
117
CN
1
220
SC
1
KORG
INC.
15-12,
Shimotakaido
1-chome,
Suginami-ku,
Tokyo
168
©
KORG
INC.
1987
6201DT!!
fiilM
t
i-O
m
JAPAN
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