CGA TROUBLESHOOTING CHART
Trouble In Horizontal or Vertical Sync No High Voltage
Check Connector BP 201
No
Trouble In Signal Cable
B+ F.B.T. Pin8
No
Check AC Input Power Circuit
IC 501 Signal
No
Check +12 Supply
No
Trouble In +12V DC Supply
Check X-Ray Hold Down Circuit
IC 401 IC 201
Trouble In IC 401 Pin2 AFC
No
Check F.B.T. Pulse Pin 5
Check IC 401 Pin4 Pulse
Check IC 401 Pin 8 Positive Level : 8V Negative Level: 4V
Trouble In IC 401, IC 201
Trouble AFC Circuit
Trouble In F.B.T. Pin5 Coil
Check TR 402 Base Pulse
No Power
Check TR402 Collector Pulse
No
Check Fuse
Trouble with Fuse F601 4A/250V Check F.B.T.
About 1050 Vp-p
Check H-L DY Connector
D 601
No
Trouble In D 601
IC 601
No
Trouble In IC 601
T 601
No
Trouble In T 601