5 Troubleshooting
5-14
PN15VT/VO
PN15HT/HO
5-2-3 Missing Color
Proper Video levels are
on CN101 (D-Sub) Pin 1, 3 and 5?
Proper Video signal is
on all cathodes?
Refer to 5-1-16 No Video.
Yes
Yes
No
Check signal generator.
No
Proper DC voltage is
on all cathodes?
Check IC101 Pin 15, 16 and 17.
Check IC102.
Yes
Yes
No
G2 voltage is right?
Check T501. (VT/VO)
Check DR05, DG05 and DB05.
(HT/HO)
No
Heater voltage is right?
Check D608, Q604 and T601.
No
Yes
Check D504, Q502 and T501.
No
Yes
Yes
G1 voltage is right?
No
Replace CRT.
Done
21
WAVEFORMS
21
10.0 V (R,G,B, Video)
CH1 P-P = 10.0V
CH1 RMS = 17.02V
Содержание PN15HO
Страница 7: ...2 Product Specifications 2 4 PN15VT VO PN15HT HO Memo ...
Страница 17: ...Memo 4 Alignment and Adjustments 4 8 PN15VT VO PN15HT HO ...
Страница 36: ...PN15VT VO PN15HT HO 6 1 6 Exploded View and Parts List 6 1 PN15VT HT ...
Страница 37: ...6 2 PN15VO HO 6 Exploded View Parts List 6 2 PN15VT VO PN15HT HO ...
Страница 38: ...6 Exploded View and Parts List 6 1 1 Front Cover CRT Ass y PN15VT HT PN15VT VO PN15HT HO 6 3 ...
Страница 39: ...6 1 2 Chassis Stand Ass y PN15VT HT 6 Exploded View Parts List 6 4 PN15VT VO PN15HT HO ...
Страница 40: ...6 1 3 Rear Cover Ass y PN15VT HT 6 Exploded View Parts List PN15VT VO PN15HT HO 6 5 ...
Страница 41: ...6 Exploded View Parts List 6 6 PN15VT VO PN15HT HO 6 2 1 Front Cover CRT Ass y PN15VO HO ...
Страница 42: ...6 2 2 Chassis Stand Ass y PN15VO HO 6 Exploded View Parts List PN15VT VO PN15HT HO 6 7 ...
Страница 43: ...6 2 3 Rear Cover Ass y PN15VO HO 6 Exploded View Parts List 6 8 PN15VT VO PN15HT HO ...
Страница 72: ...PN15VT VO PN15HT HO 9 1 15 PIN D SUB refer to pin assignment of product spec 9 Wiring Diagram ...
Страница 73: ...Memo 9 Wiring Diagrams 9 2 PN15VT VO PN15HT HO ...