Sony Professional U-matic SP BVU-950 Maintenance Manual page 28

Error 1
0. Normal operation
1. Microcomputer
M2 is not interrupted by the signal eight times the frequency of the 1/2 VD
pulse.
Communication error between microcomputers M2 and AV.
3.|Communication error between microcomputers M2 and SV.
Communication error between microcomputers M1 and M2.
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