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Roland TB-303 Service Notes

Roland TB-303
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Feb.19,1982
TB-303
SERVICE mm
SPECIFICATIONS
TB-303
First
Edition
PATTERN
MEMORY
CAPACITY
64:
8
{PATTERN)
x 2
(PATT.
SECTION)
x 4
(PATT.
GROUP
I
Tt, lit, IV)
Contents:
Pitch,
Value,
Accent,
Slide
WIINIMUW
STEP
^
'
t
M
/TTi
i
-
*
z.-i/
STEPs/
measofe
j-
1 to
16
steps
{2,
3
or
4
meier)
*
Uo
15
stepiS
{2,
3,
4 or
5
meter]
Scale
3
octaves
{PATTERN)
w/TRANSPOSE
4
Octaves
(TRACK) w/Kev
shift
TRACK
MEMORY
CAPACITY
64
measures/TRACK
Total
256
measures
(64
x 1
tracks)
Ctmti'rus:
Older.
TRANSPOSE.
D C
^
TUNING
Control:
approx
t700
cents
(perfect
fitih)
TEMPO
Control:
[
J
-
40 to 300)
CONNECTIONS
Output:
Impedance
lOkft
HeedphoTie:
I
mpedance
to 30fl
Gate
Out:
OFF
:
OV; ON:
+12V
CV
Out:
+1 V to
+6V
(1
voit/oct)
SYNC
In:
DIN
conr\eclor
MIX
In:
Impedarvce
lOOkfl
Gam:
Urtity
POWER
6V: 1
6V
battery
x 4
9V: AC
adaptor
80mA to
120mA
Dimensions:
300(W| x
146(0)
x
55(H) mm
Weight:
1.0
kg
READ
''PRELIMINARY
DIAGNOSIS"
ON
PAGE 7
BEFORE
STARTING
TRQUBLESHOOTmG
Pm.
XlBTTOOW
50kB
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K1Eieo50kB
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SCO)
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(2247019500]
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123240
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Poi.
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IMC
1133193331
Oufi
coM«T N-506
13274050^00]
LeoGLaAn
^-^
IS
I
(150391091
l|!
SRoJand
^
Knob
M-19B
(72«01
90001
Bass
Ltrte
Swichsn^
'loot
Ii3ii9303)
Z
cwv
K-506
(22240506001
Q ^ LJ
:*t-l
uH
_TBjO
03
Conwwf
fumnAd
i
U :
U
:
Li Lf
-KwbN
194
{32470194001
Por,
VMlinaSlA
SMUll-SOkA
;13319334)
[>wl
N
SOe
(2224050600)
-Knob
N-192
(2347019200)
S^lch
KHC-
10901
(U139716I
Suo
(ami
K-277-
12721037700}
-XrK±»M'l9t
(7247019100)
10901 113139715)
s
Roland
Nov.
1984
E-2
Printed
in
Japan
AH-2
1
SCREWS
fl>“®
3 X
10mm Bi
,
Fe.
Binding, Seif tapping
SCREWS
®-@
3 X
18mm
Bi
.
Fe,
Ni,
Binding, Self
tapping
BOTTOM
CASE
REMOVAL
SCREVVS:
(J-®
J«±kHLJO30«O1
4)10113449217]

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Roland TB-303 Specifications

General IconGeneral
TypeBass Line Synthesizer
Synthesis TypeAnalog Subtractive
Oscillators1 VCO
PolyphonyMonophonic
Year Released1982
WaveformsSquare, Sawtooth
EnvelopeDecay
Memory64 Patterns
ControlCV/Gate
OutputsAudio Out
Power Supply6 x AA batteries
Filter Slope24 dB/oct

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