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Drive board adjustment method:
W1,W2 is input sensitivity adjustment, clockwise adjustment sensitivity enhancement, low volume.
More responsive (precision multi-turn adjustable resistors can be adjusted by 10 turns).
W3, W4 is the screen opening amplitude adjustment, clockwise adjustment opening amplitude becomes smaller and more conciliade.
Close state (precision multi-turn adjustable resistance can be adjusted by 10 turns).

The finished cat's eye 6E2 tube holder is connected to the drive plate:
1 foot green line drive plate port 1
2 foot red wire to drive plate port 2 (2,6,8 foot tube inside is connected)
3 foot black wire-to-drive plate port 3
4, 5 feet are white wire filaments, the original wire pin or the blue line of the package C transformer
7 foot blue line drive plate port 7
9 foot yellow line drive plate port 9
The 250V port is connected to 220-250V DC
The ground end or horn ground wire is concentrated in the Ground contact
INL, INR is the signal input, respectively, to the left and right red terminals of the horn port
Operating voltage: 220-250V, 6mA,DC voltage one-group; 6.3V,0.6A Group.AC DC is availa