Line scan can synchronization, failure is not good, field scanning circuit itself, but by failing to obtain sync signal. The major fault in synchronous separation circuit. Separation by IC501 M11 movement synchronization. 9ctservice manual download site
 9ctservice manual download site
(1) using oscilloscope measurement IC501 18 feet 2 VPP color television signals, normal. 9ctservice manual download site
(2) using oscilloscope measurement IC501 attending feet, no 11 pp composite sync signal. 9ctservice manual download site
(3) the multimeter measuring C401 found has breakdown, change the image after normal. 9ctservice manual download site
(4) if all 18 feet without color television signal, can check R402 presence of open circuit. 9ctservice manual download site
C402 presence of open circuit or short circuit.9ctservice manual download site