Samsung TP17LT Service Manual page 33

5-2-4 Visible Retrace
Check white balance adjustment.
Is G2 voltage right?
Yes
Is blank pulse on Pin 17 of IC401?
Yes
Is V_FLB pulse on
23
Collector of Q303?
Yes
Does approve the Vertical pulse
24
on the CRT Socket G1?
Yes
Done
TP17LT
No
Check D502, D503, Q501 and Adjust
G2.
No
Check IC401.
No
Check Q303.
No
Check CN102, CN201.
5 Troubleshooting
WAVEFORMS
23 5.00 V (Q303, Collector)
CH1 P-P = 5.00V CH1 RMS = 28.33V
24 20.00 V (CRT, G1)
CH1 P-P = 20.0V CH1 RMS = 66.68V
5-15