Samsung AN17HS - Page 9

5 Troubleshooting
a
4.
a
5
Troubleshooting
5-1-2
DPMS
Failure
Lt
5-1 Parts Level Troubleshooting *
Notes: 1. {fa pictive dows not appear, Click the Brightness and Contrast button on the front panel, and then increase the value
of Brightness and Contwast
2. Check the following circuits, | Make Ni
¢
No
raster
appears:
Power
circuit,
Horizontal
output
circuit,
H/V
control
circuit,
and
H/¥
output
circuit.
(That
is
power
af
©
High voltage
develops
but
no
raster
appears:
Video
output
circuits
*
High voltage
dows
not
develop:
Horizontal
output
circuits.
i Co renee se al
ne
:
_
Zs
=
ne
.
fr
=
rere
oo
Pa
No
Check
IC20t
Pin
24
5-1-1
No
Power
Supply
or
replace
IC201.
|
Check
and
replace
FH6O01,
|
Bi
zm,
D601,
IC601
and
ZD600.
Ag
t4V_V
Lins
ff?
a
x (Check the Q609 Catlocrary a Check 0603, D611.
Check
the
Voltage
at
~
No
2
nee
ee
608 plus polarity point oe ——————_ Check and replace FH601, D6Ot
Yus
= ot, i of replace (C201.
N At apa Ne” > —— oka a es
< IC601 Pin 1 waveforn is correct? Z ae -_ replace
ae ICb01, 20600, D605. Yes
Xe — Does Q608 activate? . “Se Check 1201 Pin 23
Yous Dane |
T
—.
;
ye secondary
2 voltage of T6OT is correct? No
Ee (Is it same as in the “ Check TR, IC and diode
schematic felatod to every Bt tine,
Yos
Plt ee oe reams, ee
ee + Check C651 (KA7BR12) Pin 2? No Beco. : SS
< is the voltage 12Vac? B Does 4Vne ut Pin 4 of 10651? yer
ee ee cm
Yes No
1
Done
Check
MICOM.
(IC201)
Yes
«Check and teplace C651. | ome
+ Check cach IC connected to 12V
ANI7HS/AN 171S/
ANISMS/AN1QIS/AN1 SMT
5-1
oa nN
AN17HS/ANI7IS/
ANTSMS/AN1SIS/ANISMT