Toshiba SD-3805, Service Manual

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