Roland SH09 - Page 5

MAR. 27,198O
SH09
.
*.
-1
OPH46
;REsonuccq
ADSR
.q ah82 iYF-- zeta1 oxide film. 1%)
PSH33 ;;;i;;;::, j -’
NOTES --
Replacing Selected IC, Transistor --
220v -
240V ----
3 z;:rofnr?d iP-- picafarad)
Dime
: 152Ai? Jr LSlSSS (IIll-- lS2453)
When replacing Q12, ICll-14, take tae following procedures.
I.zl, i-4, 1..
ICI --Ii
: uPCiiSdC
Q12
ICll-14
1":
.T1:-'l>;
_ . .
_"
::o. -
; py::;:c
Choose
2SK3GA-Y for micimm
';'he VCE,beicg a set of four 3A662's
ZK"Z
leakage.
of nuch the same characteristics in
test
-"_
: ;xc-J;i
Check new Q12 for leakage with
cransccnductance, re+iires a
-_.
.-..--.:
I',:?; :, j :‘;c;iry
=sllcYrd
VCO being LE'C zoa-;lateu
aider
of BA662 A/3 ir. stccK as a replace-
the foilowing settings:
rcent.
Solder SA6bi
fentat 17ely after
3.e-
-_.
-"-7
: -I'. _.% _- .i
MOD--"lo"
u;E--"G"
fective one is renoved.
2:: :y~~j;i";T : .s,e:r-4 ;z- Is;;??-4
FICDULATGR--RANDO:.:
::r: L.,A7.j;z-Lx :
m.sl-l,-Q ;r ..x?G.-J
Press C2 key :<ith CSTOFF set at “tit’
w
.-. -T
: .Si::d-;d
T‘2” asd BESOBAX-3 at
"1,"' -- I20 inplt
;--. 1---z
I .;
VCO should not drift before
: -aa ..1-.
Ti‘T
tne next d/H pulse ;enerates.
sisal.
Acproxinate 5GHz ;sci;lation at .ICF
stage proves :he IC adeqate.
5