Service manual
Table Of Contents
Rial
150
r---
)(
3
~2
----,
Buffer
-ope.n
;
no
color
:
eo
0""
is
.©~short}
I .
-@-®shart.
fuint
C202
-----,
For sync.
"",pli
fie
....
em
Itt~r
.5
)"nOoth
i~
-ope
It
~
fa.
u It)' sync.
- R2.oI,R202,C2o3
Sync. sera
n~tor
•
!?ZOZ.
cplU\
:
fa~lt)'
I
Dc,Rh~:~
I
C2 \ I
---'-""';
C2.o4
Br-~ss
Ac.
couplil1'}
condenser
-DL20I,
R204
t>e.lQ.y
of
!u.tooi/1C1.l"\ce
sitahGtI
~"ct
Lo(\ct
yesi~
tlU1C~
-t>l2o\
cp~n.
:
no
pktel
~
" snort:
~hostin~
- R204
0f~t\
~
Sc~en
bq.col"neS~
~
~
9.
ht
I
VIDEO CIRCUIT
-$hort
: f""dtr
sr(\~·
~ln'I\"tc!'Y
t;~
-cansiaht
.
In"
\
Ope"
J
,C203
ope".
Sr
t1
c..
.c.2.o3c;hort
I
-J.
.&
It
'open:I"lO
picfClre
-snun.:
Ill"
r
synchTohitat;on
-ShoTt.
:1"10
Y/1s1e
r
L204
~-------~
F're<t."Eh?
chl1
yo.
¢teris
tic.
13.6V
X352
r--
R
-
2
-
O
-
1
---';"'--~-lL
201
ISOK
820
2SC16S5
,2SCISI5(Y,GR)
6V
BUFFER
R202
t.
aK
R353
82
XIOI
2SCI685,2SCI959(Y)
CIOI
RI02
VIDEO
AMP
470/6.3
150
RI03
390
RI04
2.2K
- -
~/=
CI02
T
~331
6.3
-
16VP-p
(VI
14V
C351
'---1
.
4-V-P-'p--'
101
16
~U'
II
~
~
X351
I
C251
:=47/16
~
r--+--~--+---~
/
,IC20J
/
R207
L
203
/
HAI1401
6.aK
270
VI DEO a
SYNC
/
SEPAl
/
R250
R251
10K
10K
OV
'-
__
(e)
.....
_T_1¥12_4
.....
2'-""SCL.C.:.....16-""..S'-'-5_.
2_S_C......;I,--
8I5_{
Y--,'
IGR)
.l. / BUFFER / .
----
X\O\
--~-~
Vic!eo
amp.
·ope".
}
-®~
short
:"0
pic.tl4re
-@-@
short
-@
-e
S~ort:
Screen
is
dl1Tk
X351
---':""'"
Buffer
~;~:
shoTt
}:no
c.olor
·~-~short
-@~
shert
: color
is
faint
C20\
----'---,
f\.c.
co~pl;F\~
-open
:
110
pidl.(re
·short :
tal.\\
\ r
synchroniZPot;on
r-----
C 205"
-'---,
Differehti~1
(aperture
compensation:
'mllinly
preshooti
j'~)
·open
:
imo.~t
is
shu
rp
·short: screen ;,5
do.:rk.
Differentca.l
(aperture
CClnP'!n~tion:
lno.inly
overshcotin~)
.
~o'7
ope"
}
.<;2O'Topen
:
jma~e
is
-
"short
soft
/
T
C211
270
-
I
/'i:5
_
~
'2C]~
DL201
,.....A.,f\IIr+--tlI--+-J
I
R2
r
4
R203
2.
K
IBK
C
20
4
""T""...L
\/
3.3/50BP
-:::-
/,
COy~<:.t;ol"l.
-open. :
imo.,e
is
soft
R206
---,
S.,.Al\kir1
pu.lse
i"
"";;.
lesistQnce
-
open
:dark
piduR
CIRCUIT
NOTES
,
Although specifically written
on
the
170
1 monitor, most circuit theorlea
apply to the
1702
alao. Refer
to
the
1702
schematic for differences
In
c0m-
ponent values and IdentlflQatlon.
R206/
I
r-
__
~
__
~
____
~3A·3~K
____
~~
R210
!
330
270
__
--
R209
SUS
'"I
I K
CONTRA~
I
X250
-
,.-
___ 2SCISI5 (Y,GR)
SWITCHER
T201
3.S8MH
Z
TRf
o?
6Vp.p
rvL
(HI
X202
--------------~
Vide.o
a,mo
.
I
-
R2.IO
Men
l
·R
2.1'
O~i'\
j : l"(Q ra.ster
"R2t2
c~"-
}
rIO
pldu.~
·x20Z
~:HI>skt:
:s...-reen
is
Ilbnortnally
~-0ShCft
hri'3
ht
I»"Id
flybaCk
@-®Short
t
line
Cll'pears_
•
X202
ODefl
: no YQS ter
I
R2.0~
.R2.0'/,
R223,c2/o
----,
Emitter
';)(as
and
freb'.H?hC;
.
chlll""cteristic
con-ec.
tiot\.
•
Rloe
OP"'h}
.
' C210
shOTt
:no
p,ctl\~
HA/l401
TROUBLE"
S
YMPTOM
DF
PRESIJME
...
X2~D
-----..,
Switche.r
·©-@short:color
error
'@
-@
short:
sc
reel'l
b~cctneS
briqht
and
vertical stripes
T201
-----.,
3.
SRMHt
tro..p
co\1
-Optm.
no
pic
tl4Te
-shoTt:
3.!;RMliz trap
dot
interference
-110
Tas.ter
.
no
Sound
.ho picture
-
sc.reen
is
too
Fn'i~h
t
•
SCree.n
is
dark
'multI
sync.
. raster is
brl~ht
Clhd
flyback line
ar~Qy".s
•
\ma~e
~ua.\;ty
is
un
sa.
tis
-Factory
I
9