Designjet T770 Formatter Board | 24/7 Support | 260.348.5653 | Fast Shipping

The formatter board has either a network cable or USB cable plugged into it. Next to the connector there are 3 LEDS on the formatter board. They are labeled I, II, III. They will either be solid or flashing. You need to determine what the sequence of the three LEDS are in order to decode the error. Here are the most common errors.

This LED sequence points to a faulty Hard Disk:

LED1: FLASHING
LED2: OFF
LED3: OFF

Faulty Hard Disk:

LED1: ON
LED2: FLASHING
LED3: OFF

Replace the Formatter:

LED1: ON
LED2: OFF
LED3: OFF

Replace Formatter and Main PCA board:

LED1: ON
LED2: ON
LED3: OFF

Replace Main PCA board:

LED1: ON
LED2: ON
LED3: FLASHING