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Yamaha Electone GX-1 Service Manual page 49

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Gx-1
(S/#
5030
~
)
Sub OSC speed lever should be centered.
35} CS O| YE | PN2-@-M4
75|CSO
a
Adjust VR3 for a 7Hz oscillation output at SO.
To
lent
eie-a-is
als
.
Ref. : Output waveforms should be as shown below.
-
"6
°
.
eee
ee
oe
°
e 20
33} PO | BE | PN2-@-M5
| 73|
PO
°
°o.|U°8
eo
e
eT
.
:
.
;
;
a
n
32| SINO | RE | PN2-@-M1 _| 72| SINO
S o ]
3V
OR | PN2-@-3
71|
BO
3
NE 10100
NEIQBQOc)
st
|
=
31, BO
- os
as
(vco-I)
Wave Form converter
30}
CI | YE
-@-
:
,
:
PO (33 73)
TO (34,74)
sino (32,72) CSO (35 75) so (27,67)
*
Solo KEY sub oscillator
7
for Solo
"eo oscillafor
*
NEIOIOO
'
29,
FR4/
RE | PN2-@-C
691
FR4
°
=
°
°
eee
eo
°
0
2.
Ring modulator OSC speed adjustment
28| FR3|
OR | PN2-©-2
68| FR3
vco-I
b e b i c e s
3
35
Fs
f o r sotiliator |
Conditions : Solo follow-up lever should be off.
71
SO
|GR|PN2-@-M3
| 67)
SO
°
3] ~All.
ES)
dfor
Ring modulator
Ring Mod. speed lever should be centered.
oe
ol RMI
9
a
zB
B I 7 Fel et
@ J00K
Adjust for a 7Hz oscillation output at BO (31, 71).
°
"Bf oTs
Ref. : Output waveform
=
*
2
»
OS
ark
°
24
64
°
°
:
ener
La]
7
23
63
c
oo
;
:
S
3Vp-p
22| FR 2
62) FR2
°
°
°
°
ts
ae,
=
4
i
atecilidiecsid
21) FR1|
YE | PN3-@-C
61| FR1
°
;
Arne Bes 8
se
it
| 20} AO1|
GG | PN2-@b-1
60} AO1
Vir
lola
sla
oo
.
.
°
PFs isiFlelg
a
3.
Ring modulator waveform adjustment
Gil| | 3Vpp | 19! AO 3| WH|
PN2-@a-3
59 AO 3
°
fon,
i
ae
* Balance (1) adjustment -
—_
Adkist for
i
a
a
°
.
°
Se ax |
al
al
a
* Balance
(2) adjustment -- VR6
at AO3
(19, 59).
8
°
ore
hai
ig
zz | OS
17| NI | cy | PN2-@-2
57| NI
°
8
oom
lges wes
ae
cee ce
Ref. : Input waveforms should be as shown below.
°
"(O06
yo B50K| OOK 100K
58
ce =cR
ook
Jer,
=
16|
BI | GR | PN2-@-2
56|
BI
2
ome
SL GR eo 2
z e a l
2felo =the} ele] =
a
pe IkHe
ite
:
et Eee els
Vict
a Eee
i s
T
7
15
55
iy EB. | Sora Pl F E E S
ESSE De
oe
a
er
£5 yo HES 828
Precedence
jum &
8
oo
<— 10Hz
¥
13| NC | SB |sPN2-@-2
53|
NC
a7K Zek 22x
circuit
EG}
£
olOK,
BI (16 56) or NI (17, 57)
RMI (26, 66)
12}
NO | VI | PN2-@-3
52}
NO
TR38_-TR37
a
-(-
moo) goo
eps
5
a
veoh
TES,
3%
Q:
4.
keipen) sateny circuit adjustment
ul PKC
511 RKC
2 vas)
gee
s
Conditions : Set OSC lever to maximum.
meee
a
acs
alee
0 LSE
gg 10% 58 st
* 1C6 zero adjustment -- VR1: Set for the same level at Cl
sere op $18)
(30, 70) and TP (9, 49) - approx.
| ° | 7?
==
°
2vV
ES
rG
48;
PG
E>
.
ale
* 1C10 zero adjustment -- VR2:Check
the voltage at TP
(9, 49)
T|
G
47|
G
by pressing top end of portamento
6|PR3
46| PR3
strip.
Adjust for same level at PRI
5|PR2
45| PR2
(4, 44) as at TP -- approx. OV.
t/PR1
ainki
3|
E
43|
E
2)
E
42|
E
1 }
E
41|
E
KEP-NA02887-5Z

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