Applies to

• Platesetter 3244
• Trendsetter 3244
• Trendsetter 3230 (TS4 Version)
• VLF Platesetter
• VLF Trendsetter

Description

Note: Refer to Understanding Dependancies of Hall Sensors and Encoder for theory.

1. Observe the two adjacent green leds inside the main drive amp just above J1 ( LED 4 and LED 5). They indicate which direction the drive amp is being told to move.
• VLF Main Drum Drive Amp
• 3244 Main Drum Drive Amp
2. Enter this command on the diagnostic monitor:
   drum spin 50 C
   The drum should turn in the loading direction. and the LED4 (right) should come on during acceleration.
3. Enter drum spin -50 C.

LED 5 should come on during acceleration.
If one of these LEDs never comes on, check the causes below.

Causes

• Ribbon cable from the main drive amplifer J2 connector to the backplane.
• MPE seating in backplane
• MPE card (This, and not the MDA, has been found to be a cause of failure.)

See also

• LED Description
• Main drum drive amp, PS 3244
• Main drum drive amp, VLF