Schematic Diagrams (With Voltage Readings) Exciter - GE MASTR II Maintenance Manual

LBI4898
Ult.J2 TRANSMITTER AUDIO I C
' " '
t,,[l---~-4--1-1
1',
EMPHASIS
~LIM
1 DE-
~
POST-LIM "'
8 AMP. r---eEMPHASIS FILTER 4AMP ;-------;
1 ~C_-LOI\D ~
! - - - - - - -
l
v-r :
I ' '
FREQ
BUFFER DIVIDER
(-7
4)
Q 101 IC
MOD
MOO AMPL~I
Q 102
SPARE
P902
~
w
10
93 : {
±)-----<± ,
-~t'uc__- ~-~~~~--~-----~~----~------- -~---------~-
--
,~-~-~
:;.l,
5vl ' "' , I ' I __j'
~ ~
~I I ~/:' :~~: I i~2:~:~D-~- I --- -- -- ------------- - I-
-l
-t--
1 •c150---
1
CHAN
~lUAPo
'
,,~oJusr
•
1
t..;;R'Itr,:.-R:s-,,- 1 ~-----~.
1
1
I Rll::>
. ----r-------
~RII4
CG HI
CU LO
'
.
'
REG !CV I
TX OSC CONTROL
MIC LO/TX AUD10
LQ!
I
MIC HI!.,.X AUD!O rllj
COMPENSATI
)t-.i
F I
F2
F3
F4
F5
F6
2 <E---+--+-_;_---i-·---l-'51.;f '-------~JUST
;
I 'I
RI09 22K
I I
I +TC31_1;•
~~~~r----:~---------1
--
--t
"'1
12 •517 UIOI
tR/~4
- - - - 11001( I
1'"
IJ--:113
i:' 3.3K
' !
-:I-· · · -
U'j- ------, :
I
'r ~;; ~50V
_
~--h
-
l · -- l
1
L, 1
1 4{~---~---•.-
·- I
--t---_j
i I RI03 '---fl:!,14.,J
o~ ~·' o~JlRirJ"'
clo2
~
IK ,
/.~
l'llll
l I I
I
-I
cc
1-
~~~---)''~.
,---lJe) • -): "··-
+.~({
7 :~-~--
10,
~~
-- --
::~;},·
1:'"_1
- a
'!L~
cvi01
"~
12~-
I
! ~---Tl'---,.---
---L
I I ;101
-!R.~2 ~
G I •
~--K
or--:
LK Q' - : R,l:: - - - - , OC27Utl :
I ' I OCIUF $6sK ' -Co
-~-ro
_ _j .o' o loiU3""_..__T
~
Rloa
lei·"
_lclc5 1R!I2
5 I
J ,
I
~('.541 ~-~~~~ -------r-1!-----e-!':S'?v:.t~~
I
!
2
b
110
1
0 " • 4'°K
3;~ ~T_Q027UF
>
688
~
C 15 2 __L •
r:-
1
'-::::-:~~;:::=-.":'::::::j;:::==·"--'-~
j •
'"""I· .:::.IL!F Tc:ufl
-l~-
Cl55-
~
E ___ _.___ •
6
(--t--~ o• urj
,vRJOJ
! I
!
~ ~
OSCIU_ATOR MODULE
4 Jt•~s•: ,.,J"'l'o~~~~·s •r-:
~PC~f:'J'" I'JN CND ~-c~;c_,
:t• "TTlO' ~f_\l'f X'JI\ f0'fl:l1)i,\rFIK~,
~
Rl50
i
~3K
'
I
.------- --- - ---·-- --
VO·CT· AGE
~EAL'H,GS
ARE TYPICA:_ READINGS MADE
1.
WITI-1 THE TRANSIII•T-E" >\EYED. AND MEASURED i
I
. .
VI .. -•. :, 2·),8).0 OHM$-PE::R-VOLT
MUE.~ WO~H·
R~_FERENCE TO A- A~O NC>T CHA<-srs GROUNfJ
AN RF C:HOI<E (25-50 MICRCHENRY~.· I"; VSED IN
, ;n£ HOT METER LEAJ TO AVOID DETUNING
I!<~
C'RCU''S - - - - - - - - - - - -
SCHEMATIC DIAGRAM
25--50 MHz, EXCITER BOARD 19D416659Gl-G8
14
Issue 4
MOD AMPL-2
Q 103
MOD
(l£11l62182'i, H.ov. 16)
- - - - - - - - - - - - - - - - - - - - - - - -
MOD AMPL-3
Qt04
I
l
Rl45
~
33 K
I
BUFFER
Q 105
MULT-I
(TRIPLER)
0106
- - - - - 1
I
I
0
0
,
I
0
0
,
I
·- --·---·
-~·
l
Rl46
j
63K
f --- - -
"
0
"
,---
1--:Jio?:__
iS+
I
16 ~
+I
' I I'+
+,,
1
e 4 + 3
1
I" "J
TJP VlfW
MULT -2
(DOUBLER)
0107
EXCiTER
BOARD LETTER
MULT-3
{DOUBLER)
0108
NO ,
FRfO 1
l
8148 i
'13K
___ I
AMPL-t
0109
I
. - --------- _j
ALL r<E.SISTORS AHE 1/2 WATT UNLESS
OTHERWISE SPECoFiEO AND RESISfOR
VALUES IN OHMS UNLESS fOLLO'NED 9Y
~~~~6W~tZ~sMfNG A'cg~Mm ?~L
TO MICROMICROFARAOS) :JtJLESS FOLLOWED
BY UF• MICROfARADS. :NDUCTA,'\ICE 'lAWES
IN MICROHENR'IS UNLESS FOLI..O'M::O BY
MH• MILLIHENRYS OR H• HENRYS.
,---
' , ', ,">,IL,
I>->> ~HO,_,M.:\Nr·c,
: s•
~-. ,~c h~-
~·-M•'J'~'K•
r- tJ ~Jl-1 ;·M~ '': ,
f f- ~·., I
-~" l·i:
j
Ci46
' TO
y--<PA
T >
J 101
I