Toshiba SD-2815 Service Manual page 81

D.
CHECK A
Fig.5. RF
waveform
Check RF Eye-Pattern.
RF : 1.5-1.6V(Q2A6 collector)
YES
See the eye-pattern vivid?
YES
• Check IC201 Pin 105.
• Check the clock at the IC201 Pins 138.
END
NO
Check IC2A1 Pins 47, 50, 51, 52.
Does the
NO
sawtooth waveform emit
at IC2A1 Pin 36?
YES
Replace IC201.
• Both are normal : IC201 is defective
No signal: Pick-up is defective
NO
Does the 1.6V emit?
Check IC201 Pin84.
No signal at IC201 : IC201 is defective
3-11
NO
Replace IC2A1.
YES