Samsung AN17HS - Page 10

5-1-3 H_Deflection Failure
OT
BB1C401 Pin 28 waveforin is comet?
0401 ga
wavefonns
EA 0402 drain wavetorn is cureet?
ae
eS
Yes
te, drain
ale correct? A
Yes
0403 hase, collector
waveforms are correct?
“WAVEFORMS * ~~
No
No
1. Check that DC 12V is displayed
at Pin 29 of (C401.
2. Replace IC401.
Cheek 0452, 0453.
Check 250, 0251, 10401
Check +12Voe line.
Check and replace 0403 and 0402.
Check DY connector connection.
Sith ence a
EY C401, #26
ep
CH P-P= 10.96 V CH HIMIS = 6.180 V
[2] 0402, Drain
7 EI Q401, Gate
CHIPP=116V CHERMS = 6:94aV
la GR Diain
EY 9403, Collector
5 Troubleshooting
ANI7HS/AN171S/
ANISMS/AN19IS/ANISMT
5-3
5 Troubleshyoting
5-1-4 S Correction Faiture
Check SZ ~ S5 signa
Refer to the S-correction tabie page?
~~ §2-S5 signals are corruct at
~~ each frequency block? ;
Yes
Check and replace 10201.
orl Baas
Check and replace
C473, C474, C475, €411, C415
0422-0425, D409~(
5-1-5 H_Lin. Failure
{C201 Pin 21 vo ‘.
different H_tin. DAC values?
Replace 1C201.
~ {C603 Pin 7 volt = No
lage Vanics Witt NS ved
- different H_Lin. DAC vali Pa
Yes
Check L403 |
5-1-6 Invariable H_Size
Check +12 V line.
Check parts around
IC603, 0413, 0414.
“(C401 Pin 28 pulse width => No
vid
a H ie yates 241 Check and replace 10401, 10201.
Yes
0402 drain pulse width ~~~ No
output duty varies with differiut _o————+_ Check parts around 0452, 0453.
H_Size DAC values? 4 wo t
54
ANI7HS/AN17IS/
AN1SMS/AN1SIS/AN1SMT