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NEC DPro2070SB Service Manual page 87

Crt display nec-mitsubishi electric visual systems corporation september 2002
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CONTINUE 
The horizontal waveform is inadequate.
Check the voltage waveform at Pin 6 of CN600.  
NG
Expected failure point
IC601
OK
Check the voltage waveform at the case of Q7B5.
NG
Expected failure point
IC6A2 or peripheral circuits
Expected failure point
Q7B1-Q7B5 or T7A1
3-13

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