27
9-2. Vertical Size
Is
changeable the
DC voltage of
IC401 pin 1?
Trouble in
R401, C401.
Check the IC501 and
its ambient circuit
1. Trouble in IC401.
2. Check the +12Vdc line.
No
No
Trouble in R410.
Yes
Yes
Is
the waveform of
the pin5 of IC401
correct?
No
Is
changeable the DC
level of pin 8 of
the IC501?
Yes
Abnormal
V.Size
50Vpp
6Vpp
0
8Vpp
106KHz/85Hz
Summary of Contents for 103FH
Page 35: ...33 PCB LAYOUT Main PCB Component Side...
Page 36: ...34 Main PCB Solder Side...
Page 37: ...35 Video PCB Component Side...
Page 38: ...36 Video PCB Solder Side...
Page 39: ...37 Control PCB Component Side Control PCB Solder Side...
Page 40: ...38 Socket PCB Component Side Socket PCB Solder Side...
Page 41: ...39 SCHEMATIC DIAGRAM Power PFC Circuit...
Page 42: ...40 MCU OSD Key Deflection Dynamic Circuit...
Page 43: ...41 Deflection H V Circuit...
Page 44: ...42 Video Vertical Convergence Tilt Circuit...
