Korg POLY-61 User manual

PROGRAMMABLE
POLYPHONIC SYNTHESIZER
SERVICE MANUAL
POIY-61
CONTENTS
1. SPECI U ‘’CATIONS. 1
2. STRUCTURAL DIAGRAM. 2
3. BLOCK DIAGRAM. 4
4. CIRCUIT DIAGRAM. 5
5. REFERENCE DATA. 9
6. PC BOARD . 10
7. SETTING CHAS iS. 18
8. CHECK AND ADJUSTMENT PROCEDURE .... 19
9. PARTS LIST . 25
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KEIO ELt-CTHONIC LABORATORY CORPORATION
TOKYO/JAPAN

1. SPECIFICATIONS
Keyboard .
. 61 keys (C-C)
(Module parameters)
(Panel controls)
DCOI* . . Octave switch (16’, 8’, 4’)
Tune.
±100 cents
Waveform (r\ , PW, PWM) Joystick .
Pitch bend range: max. ±700
Pulse width, PWM depth
cents
DC02* .
• Octave switch (16’, 8’, 4’)
MG frequency
Waveform (D\, n_,OFF)
X: pitch bends, Y+: vibrato,
Interval: Unison, Minor 3rd,
Y-: wah-wah
Major 3rd, Perfect 4th,
Volume. Adjustable
Perfect 5th
Tape interface.
SAVE
Detune: 1—6 (max. 50 cents)
FOAD
VCF*.
■ Cutoff frequency: 0—63
VERIFY
Resonance: 0—7 CANCEF
Keyboard tracking: OFF, FUFF Indicator.
Program number display
EG modulation intensity: 0—7
Parameter number display
EG*.
■ Attack time: 0—15
Value display
Decay time: 0—15 Input jacks .
FROM TAPE (HIGH/FOW
Sustain level: 0—15
switch)
Release time: 0—15
Arpeggiator trigger in (~ *-GND
VCA*. ■ Mode switch (EG, n_)
PROGRAM UP Ct-GND)
MG*.
• Frequency: 0—15
REFEASE ( “t-GND)
Delay: 0-3
Output jacks.
OUTPUT (HIGH/FOW switch)
DCO modulation depth: 0—7
HEADPHONE
VCF modulation depth: 0—7
TO TAPE (HIGH/FOW switch)
Key assign modes • • • ■ • Poly Tape switch.
ENABFE/DISABFE
Chord memory
WRITE switch.
ENABFE/DISABFE
Hold Dimensions.
■ 985(W) x 350(D) x 110(H) mm
Arpeggiator. • ON/OFF Weight.
12 kg
Speed
Supplied accessories • •
• Data cassette, Connection cord,
Fateh (ON/OFF)
Plug adaptor
Range (FUFF, 2 Octave, 1 Octave)
Power consumption • ■ •
• 28 W
Mode (UP, UP/DOWN, DOWN)
Operating temperature • ■ 0-40° C
* Programming and editing available.
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2. STRUCTURAL DIAGRAM
PART
NO.
PART NAME
REMARKS
1
Panel
KOC-C20124
2
Metal fittings of phone jack
KOC-C30205
3
Led cover
KOC-E40129
4
Tact SW knob A
KOC-E30042 (Ivory)
5
Tact SW knob B No. 1
KOC-E30043 (Ivory)
6
Tact SW knob B No. 2
KOC-E30043 (Red)
7
Tact SW escutcheon 1
KOC-E20047
8
Tact SW escutcheon 2
KOC-E20048
9
Tact SW escutcheon 3
KOC-E 20049
10
Tact SW escutcheon 8
KOC-E20050
11
Rotary VR knob
KOC-E40087
12
Slide SW knob
(High 6m/m black)
13
Slide SW mask
KOC-F40222

LEVER KNOB
PART
NO.
PART NAME
REMARK
1
Wooden case
KOC-D10014
2
Keyboard
ESK-70
3
PC board rail
4
Control panel
KOC-20040
5
Joystick
6
Radiation board
KOC-C30207
7
Shielding sheet
KOC-F40227
8
Bushing
TA-305 (Black)
9
••
TB-300 (Black)
10
-
TA-310
11
■■
TB-300
12
Felt
KOC-F40186
13
Shielding sheet
14
Fuse seal
Fuse 250V 1A (T1 A)
15
"
Fuse 250V 2A (T2A)
3

3. BLOCK DIAGRAM
4

4. CIRCUIT DIAGRAM
KLM-475 (OLD PRODUCTION)
C4I
KIM-475
CPU BOARD
ic . .
CN3U 4 5M
TOTAK
4 - ? &fc 0 8 j
[rg 2903 ica» |
HW40OJ
8049
n
Vnn ir.XODO
^C33 7
D1
03
X)
X2
04
DC
D7
RD
WH
SS
E A
PSEN
PIG
P11
PROG P12
PH
P14
P15
PI 6
P17
P7G
P2.1
P22
Tt
P23
P24
TQ
P25
P2G
1 NT
P27
rrri ba6
|03M |
-.CH-25B C6
ctT
m
A
sr ™
^ [tS
W
~3,
(33
XTAL
XI
4
«*(!»,
8M)i
8049
IC 1
D QJ
*•0217 D1
*tc
0 2
D 3
D4
XI
D5
x2
D 6
HTSTr
D 7
$r
ALE
EA
Wo
psCn
Wfl
PROG
PIO
PM
P 1 2
P13
PH
Plb
Plft
P17
P20
P2I
P22
T 1
P2 3
P24
TO
P2 5
P2 G
» NT
P27
5

KLM-476, 477, 478, 479, 481, 482 (OLD PRODUCTION)
KLM-478
ANT I BOARD
CN-34b
7

KLM-508, 477, 479, 481, 482 (NEW PRODUCTION)
KLM —508 SYNTH BOARD

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