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r - - -
C4 0 2 . -
VertiCllI
osc.lllcrtor
condenser
'll,pett}:OI'Ily
sit'l'jle
·shOrt horizontoJ line
r---R403.R404 - - - - - - - - - ,
r-
v40S
V~'rtic(ll
oscIIIa.tor bia.s circ.uit
A
nsoYb
of
Q ,
bhOYm~(
'R403
open:
only
Si~1e
horizontcll
lihe.
V()1+~<je
-R.40+OP~":
when 'J HOLD VR is
ttlrhed..
V .BLK
I
H. OSC, V. OSC & V. OUT CIRCUIT
I
r -
R416,C40~
.
R4Ig
r--
CS'OI
---~==:::::~"'--I
b~Qck
bo.hd
""ill a.ppeo.\"', o.nd scree"
.--R402., C40S --.:/ _ _ _ _ _ _ _ -, r
FR4-0i •
cA-!'? - - - -.....
r--I¥.' -
IS _ _ _ --:
:~l~ ~P:::~~Znt~o.b\liu:.flicmi"1
lhh!~.,.a.tin~
drcuit
R414 ,
h
C40g
Base
biaS
-resiSto.hce
For 1o.l<.e-off
V.
BLK
pulse
Fo\'"
pTeventin'.} verticil! sync
s~1\Q1
. open : iUulty harizontai sync.
Vee.. Sl'J\Ctk''':f
·c~s
short}
:falll+-..
"
'FI~401
Of' ! 1\ } • • vertieo.l
o.m~itl4de
'open :'Jertico.l
runpiitude
;- R40i.D402
,C4
03-
1
/
(veT tical sy,..c
si~nlll
nice-off)
SMoot
~~
of
X40/
·R41b
open} :flyback Ii
he appeo.rs,
,C40Q
open
. short
!
picture is
shift
to
l"i'aht.
~
C40\
:i)-402.siIotil.0hlr
si"SI~
.c40S
0rel\:when
VHGL'P VR is tu.rned
fu.\Iy
'R41+ of'\!'" i .. smo.lI.
<approx. 2 C1rl)
o.hd stat.jhzatiol'\
/
.c4-04
open
" Vtrt,cal
sr
nc
.
is
Slna.U •
.c~3shortJh.,rizont41
ri<Jht, it is
possible
to fold b(lck
(o.~rcx.
1.J;;c1n)
/
'R418 open: screeh
becomes
sii~htly bri~ht
Condenser
for
p~ven1i~
verticD.l
amplifier
oscilliti"3
'--"-T' _ _ _
'_in_e_---'
o.t
Cl
stnctl( alllpIitude(apprDx. ho.lf)
1
1
1-
I , '
r
../
I
r
~A"
'A
A
~A
/
I
X4
f
O © '
-81'-11~0-V~\+---/~-----~C~4~0~3~i
..
~-/iR;4;!8~~;2-i~-~c~J~0~~:y7~-41~J=2='=0=V=p=-=p==~~=~a~8=v=p=-=p=~---------~~~~~vF~R~4~
~~:w
~~
/
I
~:~
45~
100/~~R401
.033
l i l l
JLJL
68FR
IWOMR
IW'OMR
_1
LC402
~+ ~402
h
~
V
DC
2W
";-C412
+C408
T.~1;~9100V
MY
-
I
I
+n'i-
1061'
=-C501
lID
~2.2/1~~
r~* "'~ltOy4 ~
~11
(v) ---a.3V
(V)
R2il~
.:c_ 3.3/160<ZlZ14.7/50
1
I i i
:!:1I.420
.001 C401
1
TANTAL
+
RDO"(C)
/ /
s-
040li
\0 112;5
~~O
~IO.I.
#
~I-
R411 22K
I
+
~~b~16 ~
J
I
rv:?OSiTiONl
IS2473H.
~
-"
TANTAL
#
~
0405~
zt:C407
t;:-,3----~~'--tl--""=-0:-s:-0+k;~w"':'0"':'6-.A:-------·'-
_ _ _
L :
1
-+L-~~:!:':.~/2.~B~5~0~K~-~1
X402r V
~
v
,#'#.. R405
_I"'"
1
~~~~7
R036E
l
1,3.3/50
680
-.l ..
",,+
I
~~s
C411
122~41~1
ri
R4!2
1
0.6V
4V
IV
\ 3.6V 6.7V
I/V~~:p:
5V
!O.SV
12K
IV.LINj ,
~
""" \
1s~;m;
47116,
'v
l~~F
100/160
'(opnCN)
~ ~
5.5K
=
I
2
3
4
S
6
7
8
+~'i2
\~R471
T503!
?1--.......
r..-----4~.!:.....--4J~_:r4--~i~----:---+I
. . . . • . . . . . .
-";:>' - !W!....l.<OM!Z!R!:l..-
,
- .... C406
2208
' -
-$R40a
~681/2w
SIDE PIN
TRANS!~+-l---+I---------,::-::-:-:::+---~~---i,f------
r-L---'---'-,
I
?200
'V
(OPTION'
I --
I
R4 19
I , . . ,
I
v.
AMP
.1 J
V.OSC
I
-=?".082MY
R410
2.2K
1/2S~\r-,-~~--t-----
R529
R403
~
R:~9~
eMF
"SInOQthil1~
c.ondenser for
DC
vclta~e h~atjve
:>
~6.8
I W ,
C401]' - - - - - - - -_ _ _ _ ......
100
J
,d
4.7K
-
~"
.
I
l't d'
I
feedback
PHASE OET
H.OSC
WAVE FORME..,
IC50'
,--=---,
·open:vertICCl o.lIIP
'
u e
IS
Sinai
(o.pprox.
6 em)
IV.
HEIGHTI
.short:only Sinale
horiLonta.1
line
,
HAII244
J
16
15
14
13
12
/I
10
9
H.AFC,
.-R40S
-.........
r-R410 _ _ _ _ _ _ _ _ --.
TP -338
12.2V 6.6V 3V
~~6 6.6~I2.SV
1
.8V
~.
°V.SOCS C
X 5 ° I
I
Discha~e
resistor f::r vertical
AC
c.urrent
detection
resistor
_4.7K
R ~O 5
osc.illo.ticncondenser
-open
:
only sinjl~
horiz:onta.1 !,he
. . .
.-~
\ ¥ - y . J
1
~
7.51<
0.3V
'54.
2\/
'open:only
Sif\~le
hcyiLcntal
lin~.
(hcriLc1na.1
lin~
is
kicks
upward
• _ _
(imo.se
appears
at
lOP
haif
of
RS02
C508
, y
I>""
SCTl!.en at
,nlends
of aOc<lt
in
a.bout
1.
second)
~.,."..,.
.... 6 a K
.0056
I _ / /
one
sec.ond)
CS04~t'""
:~
?P
0.8Vp-p
~ /
C503 1150
+
C505
r i
,...,.-, (~R506
..-L-R40'T - - - - - - - - - - ,
.015MY
-~....
,~3l
R 503
I
I
!
I
I
..
560
I
Resistor
foY
AC current,
~
xsol __ --,
II.8K
I
1"1.>
I~...J
I
i
\ 1
_
neSlltive feed ba.CK
- - -
.
dy-ive
RSOI
~
1/4
CMF
?
r---'
·op~l'l:
top
haif
oniy
of sc.reen is
1-!01'Izchtai
TP<r-.33A 5.6K"?-
[>-R504
'-
(H)
ed
Ah}'
I --...
etCp.sSively
donso.
t
.ap'
: no
yastet-
47K
...............
-short
no sound
HI.
~
C506
m:
M Y ,
I ......
HOYizohtal
asci
II"
t;on e\ e""ehi-
33/161
'Y
st
r
cs
IS,
CSI'l
.
CSQi', TS03 - - - - . ,
Fonno.tion
(rr
~YQ.bolic
wdve
(side
pit'
cotnllensa.tion)
'(;SI'>
o~"
\
:cnly
s;I\Qlt
vertico.ll;ne
'1'S03Snurt
J
d
·C.Slrt
~n
l.:hociz.onto.l
a.mplitu.de shrinks
,
·Tso3.;V~
5
-eSI'I
J.cd,
:t,,\,
po.rt of screen is rnissit'lq,
~D;06
I
P-revention of capacitor d'ropout
due to o.pplict\-tio n of reverse
polo.rity volto.~e to C51'1 and C5\8
+
1+
±\I.~?J
JH.FREQjR 3 5. 9 0 K 8
lO~5~:
OM;;-------...I_
-C~08',Rs-o:3,RS'04
I
·c!>c)~
open
:
no
n~
e
~
12.7V
0701
I
no
sOIl .....
d
R701
HZ20'V,
HA 1/244
TROUBLE
SYMPTOM
OF PRESUME -
X701
-
_ _
~I§]
~
X'lO! -----,
X -
R.o.r
?I"tectc'r
'
@-<W
!ohortl.·f1D TCl.ster
.@-<f)sherd· no
sound
-eso1.
Rib
.~ZS'
~
... tcoth wave
phase
adjustment
-eSOt'!
cpen (
: Imaqe shift
•
/I
SI'orl
to Idl
4
.
7K
"")
A~"
I~R~02
1 . . . . "
.
R';03
H
AFC outpllt ihjection
resistor
"$.
+
R704
~
41.2K
iI.l.
·open
:fCl.llity horizonto.l
sync.
.. C701zz;:z
9531<
CS27
1/2CMF
R527
100/6.31
*1·1.
OOI5r11----.
"#'
?
CMF
*
~5C5
L..c.....
I';'
8,'}"K 1125
\ROI
I
(r::l) .,f,.t'_
--til
)~ __
-4I>-t-+-j-----4'Vv'v-v-
.-((52'1. CS2'7 - - - - - - ,
~t
.. -----.
~l~
• --
Pulse phase
settih'J
I
~
-RQ.'T
,)pen}:
;",o.~e
shift
~
RIJ'OI ,R'703.R7o4
·C52.'T open
to
ri~ht,
SO~,Cso4,
RSo/ -
r-CSOS.
RS'08
r-
C'TOI, D'701
-
'
<'5'2'7
sherI:: faulty
hori:z:onlul
HAFe output
vo\to.~e
S~wt~th wo.tIe ~eJ1era10r
Ab"OTmo.l
B1 voltaqe
Smeothi
n~
circuit
CirCUIt
for
comparison
wave
detection
C ...
optn
·C~S.R5Dg
O"""}.
I
h'
'I
-R'1040p.!n
1.M
ro.ster
. >O'T
l:f!1u.lty
hO~;ZDnht(
r'"
:liW.tJ
onZOIlTa
.
'~')Ol
open 5 sync.
elf
top
half.
.c')os
short
~ync.
'0'101
short no sound
'
C504-
sl-Drl..:
fo.ulty
horizontal
\
r-D!>05
Pulse ampiihlde
\imitter
.open :
imo.~e
shi ft
to
ri<jht
·short: fa ..
lty
horizcl'\t(l1 syt'IC.
sync:.
<.
HoRIZONTAL C1RCtIlT>
· H. oscillo.t;on
stop
(ho
'(a.
ste
r
,
no
SO;Ji1'\)
· fa.uli,!
H.
SyhC
.
· o.bhOYmo.\
H.oscillat'on
<
VERTICAL
CIRCUIT)
• V.
DSC.l!o.t;ol1
stop
(sil'\~le.
nOl'i:z:ontal
11he)
• fal.llty V.
sync.
· fo.L.llty
V. ampl;
tu~e
·
f~u.ltr
v.
i'heo.ri+y
,-X4CI,
D4CI,
Noli'
_...1..-_ _ ---,
Vertical output
'X401 open}
.
v ertieCl! o.tnoiitude is
,D401
shan
:
S'
1(-
-
'
,
mil
,
Imo.ae (lpi>ears
'C4Cl/
short
,
J ,
r
below
center
of
CRT_
CIRCUIT NOTES
Ahhough specifically written on the
1701 monitor, most circuit theories
apply to the 1702 also. Refer to the
1702 schematic for differences in com-
ponent values and identification.
14
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