Black Box ACS235A, ACS236A manual Operation

CHAPTER 6: Operation

Three (AGC enabled only): Low blue. Even applying max AGC, the unit can’t equalize the color signals, of which blue is at the lowest level. There’s trouble with the blue transmit diode, fiber, or receive diode.

F:Contrast is turned up too high at the Remote Module for AGC to work properly. Turn the contrast down using the contrast dial on the Remote Module’s rear panel.

H:HSYNC missing. Either there’s a problem with the green/HSYNC fiber or the CPU-side extension cables, or a jumper has been set wrong in the ACS235A Local Module—probably JP6 or JP11 (see Section 3.2.1).

V:VSYNC missing. Either there’s a problem with the blue/VSYNC fiber or the CPU-side extension cables, or a jumper has been set wrong in the Local Module, probably JP10 or JP11 (see Section 3.2.1 or 4.1.1).

b: Blank pulse missing. There’s a problem with the green/HSYNC fiber.

C:Distortion at receiver’s data interface. Either there’s a problem with fiber 1, fibers 1 and 2 have been transposed, or there’s an internal error in the Local Module.

A:Distortion at transmitter’s data interface. There’s an internal error in the Remote Module.

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