Vco Pcb - Roland SH-1 Service Notes

VCO PCB
JUL 20
1978 SH-1
VR307
(LFE9R-C16 lOOKA): RATE
VR308 (LFE9R-C16
500KB);
DELAY TIME
VR309 (LFE9R-C16
lOOKA); TIME
VR310
(LFE9R-C16 IMA):
DEPTH
VR311 (LFE9R-C16
20KA)
;
MOD
VC0H-3A-1
-
PAiiTS
ON THE FOIL SIDE
VR314 (LFE9R-C16 100KB); PULSE WIDTH
VR315 (LFE9R-C16 lOOKA):
NOISE
Vli3l6 (LFE9R-C16 lOOKA): SUB OSC
YR317 (LFE9R-C16
lOOKA); VCO
VR318 (LFE9R-C16 lOOKA): EXT SIG
5301 (SRM1033-K15)
;
MODE
5302 (SRM1C25-K15)
:
lUNGE
5303 (SSB022-12P)
:
NOISE
5304 (SSB023-12P)
;
PWM MODE
5305 (SHM1033-K15)
:
VAVEFORN
5306 (SSB023-12P)
:
SUB OSC
TO VC0H-3-l(
11-19) TO VCOH-3-1 (20-28)
shovn are the same
as VC0H-3B-1.
VC0H-3B-l( SERIAL NO. 710750 AND HIGHER)
(
152H003B-1)
VR301: NOISE
VR302: RANGE
VR303; KCV
VR304; PWM
5'fo
VR305: LINEARITY
VR306-.^
PWM 50^
VR312: FREQ
VR313; WIDTH
c
TO VCOH-3-1 (32-45)
"=
0
=
2SC1740(Q)
02SA826(Q)|
2SK30A(GR)
'=<ID"
1S2473
r-Ti
Test Point
59BS8806
2SC828
CAUTION: Be careful
vhen
moving the flat cable
connections
.
TO VC0H-3-3(l-9)
FLAT.,,
CABLE
N9.HI9
TO VCOH-3-3(
10-18) TO VCOH-3-3( 19-32)
Electrolytic
( )
Mylar
Ceramic
Styrol
7
Roland