Chapter 12 633
Display/Power Supply Section
Display Distortion
10.The appropriate GAIN adjustment (A17R55 or A17R75) should
change the ac component in both outputs by the same amount.
11.If the display is a single dot, check the base of A17Q18 for −10.3 V
±0.3 V. Verify the signals at TP11, TP14, TP12, and TP13.
12.If signals are correct and cables to the CRT are good, suspect the
CRT.
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