Zenith XBV243 Service Manual page 35

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ELECTRICAL
TROUBLESHOOTING (CONTINUED)
CHECK A
NO
Check RF Eye-Pattern.
Check IC2A1 Pins 5, 6, 7, 8.
No signal: Pick-up is defective
RF : 1.5-1.6V(IC2A1 Pin 57)
YES
Does the
NO NO NO
Is the eye-pattern vivid?
sawtooth waveform emit
Does the 1.6V emit?
Replace IC2A1.
at IC2A1 Pin 41?
YES YES YES
Replace IC201.
Check IC201 Pin84.
No signal at IC201 : IC201 is defective
• Check IC201 Pin 162.
• Both are normal : IC201 is defective
• Check the clock at the IC201 Pins 28, 30.
END
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VR168 - 923-03485 D35E COMBO - ELECTRICAL