Printronix P3000 Series - Manual (Page 164)

Interfaces 7–8
Remove Controller Board and Install Terminating Resistors
To install the alternate terminating resistors, perform the following steps and refer to page Figure 7–3.
1. Loosen three screws from the rear of the EMI shield cover (A). Remove EMI shield cover.
2. Firmly grasp the Controller board (B) and lift it straight up to unseat the connectors at the printer
base.
3. Open the latches on connector P4 (C) and disconnect the J4 connector (D).
4. Remove the 1K ohm resistor pack from the socket at location 20D on the Controller board.
5. Plug the 220 ohm resistor pack into the socket at location 20D.
6. Plug the 330 ohm resistor pack into the socket at location 20E.
7. Connect connector J4 (D) and close the latches on connector P4 (C).
8. Position the Controller board (B) in the printer base. Do not seat Controller board into base con-
nectors.
CAUTION
Do not use Mechanism Driver heat sink as a handle when removing or installing the
Mechanism Driver board. Damage may result.
VORSICHT
Das Wärmeschild des Steuergliedes für deu Mechanismus nicht als Handgriff
benützen, wenn das PCBA Mechanismus Steuerglied ein oder ausgebaut wird.
Schaden könnte entstehen.
9. Position the I/O cable (F) between the Mechanism Driver board (E) and the Controller board (B).
10. Install the controller board (B) onto printer base connectors.
11. Install the EMI shield cover (A) and tighten the three screws.