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Key Voltage
Gx-1
(S/#
5030~
)
KP
Circuit Board,Adjustment, Wiring
Wirings
K
P
No. | Terminal | C?or ,
Direction
No. | Terminal | $12".
Direction
40}
+15
80}
+15
39}
+15
79|
+15
Adjustment Procedures
38 | —15
78|
—15
=e
x
Conditions: Set Tune Lever on Panel 8 to center.
37]
—15
7|
15
a]
a n
Gl
@0e
a
B|
B10,
1.
2V adjustment -- VR1
36
76
a:
Adjust for 2.000V at TP terminal (35)
ere eR
Tt
ree Ral
2. 0.5V adjustment -- VR2
ah
:
gePin] Six 58 shiog.2 BT og Bog BP Los 9 aoe st Ao od ae
Adjustment for 0.5000V at FET13 source side lead.
a
=
Beoigx BPogx Besqx
Bears
Meo)
Pow © Pe Fe Pre a
rs
3. Note voltage buffer adjustment -- VR3
3
13
Condition:
Turn Cl key on.
32|
C; | BR | PK2-CrM
72
Adjust for 0.5000V at IC1 pin6
31|
Bz
| PK | PK2-ByM
71
4. Octave voltage buffer adjustment -- VR4
30!
Az | sp | PK2-A =M
20
Conditions:
Turn Cl key on.
29]
A,
| GG | PK2-A yM
69
=
Adjust for 0.2500V at IC2 pin 6
081
Gi | WH|PK2-G iM
3
=
5.
Key volatge reverse follow-up voltage adjustment -- VR5
a7]
G, | or
|PKe-G -M
_
gorave voltage
Gate keying circuit_
Octave Gate circuit
-
Conditions:
Turn C1 key on.
tet
a
aa
a
eee
EI g2tH26, 220%
Adjust for 0.2500V at TP2 terminal (55) or at IC3 pin 6
:
;
ee
—
He
2|
F,
|BR|PK-FrM
| 65
word
S o p
SESS] 5]. |
note voltage
fies:
24|
E,
|GR|PK2E;M
| 64
a
oo
=
"aa aq
ba al 8] 8 at
on
Pedal phase synchronization circuit operation check.
23}
Di | YE | PK2-DiM
63
seo
x
EOF
Be BB ark
° ove oo! 63.
After
repeating
pedal
turn-on
approximately
ten
times,
|22|
D: | OR | PK2-D.-M
62
Re
Se.
BK OK |
check two or three times that a pulse is present at TI
21!
Ci
RE | PK2-C#M
61|
KB | YE | MPII-£202
-
terminal (51)
20|
C,
BR|PK2-CrM
| 60
!
,
egs8l 2).
100K
Oe
8 gg
4 58728
9.0
3
ie
ab Hat
le
!
oes og ene, &°
sr
Se
'
o
oo
Mo
PO
Lo
E
9
-
A=
|
: ° aa
. "a, a 3}
—
—
2 ~ 3uS
16
; WH | PK2-G a
56
F
2 oneetel gg TS
SA]
Speci Phase Synchronization Circuit
15}
G, | GR | PK2-GoM
55
at
14)
F Y | vi | PK2-FeM
54
13|
F, | BR|
PK2-F ¢M
53
fi2]
E,
|GR|PK2-EeM
| 52
11}
D i | YE | PK2-D&M
51
10/
D, | OR | PK2-DoM
50|
K2 | RE| MPII-K(8)
9}
Ci | RE | PK2-C¢M
49|
K1 | OR | MP11-TR@4
8}
C, | BR | PK2-CoM
48;
O | BR|
MP11-KB(7)
7
|
47
6
46
5
45
4
44
3
BL12 | PK2-C -C
43
2|
E
42
1 |
=
41
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