Printronix P9000 Series manual Appendix F Hardware Jumper Configuration

APPENDIX F

HARDWARE JUMPER CONFIGURATION

Jumpers on the DCU (Data Control Unit) board are used to select a few configuration paF rameters. These jumpers are installed for normal operation at the factory. However, certain applications may require a modification to the jumper configuration. To change any of these configuration jumpers, the DCU logic board must be removed. Table F-1 describes the jumpF er configurations. To gain access to the DCU Printed Circuit Board Assembly (PCBA), the right side panel and the card cage access panel must be removed as described in the following procedures.

- CAUTION -

Some configurations require cutting an etch and soldering on the PCBA. These changes should only be performed by a trained technician.

- VORSICHT -

Manche Konfigurationen benötigen einen Ätzschnitt und Löten am PCBA. Diese Änderungen sollten nur von einem geschulten Techniker vorgenommen werden.

Table F-1. Hardware Jumper Configuration

Jumper
Description	Description
E1A-E1B	Print Head Select 0
E2A-E2B	Print Head Select 1
E3A-E3B	RXCLK Input
E3B-E3C	Clock to 68901 RC Input
E4A-E4B	TXCLK Input
E4B-E4C	Timer C Output to Clock
E5A-E5B	NTXCLK Input
E5B-E5C	Clock to 68901 TC Input
E6A-E6B	Clock DPMC Phase 1
E6B-E6C	Clock DPMC Phase 2*
E7A-E7B	Clock CPU*
	*Normal Installed Jumpers

*NOTE: Only one of the Serial Interface clocks can be selected by inserting the related jumper. Selecting one of these clocks will require cutting the appropriate etch on the PCBA: For jumper E4A-E4B, cut E4B-E4C; for jumper E5A-E5B, cut E5B-E5C; for jumper E6A-E6B, cut E6B-E6C. These changes should only be performed by a qualified technician.

Appendix F-1