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EPSON

EPSON AMERICA, INC.

SERVICE

PSB NO.: P-0028

SUBJECT:

PDOS FOR THE LQ-850/950/1050 PRINTERS

The following contains information on using the LQ-850/

1050 PDOS diagnostics (#B765108801 for MS-DOS compatible,

#B765108901 for QX-16 computers) to troubleshoot the LQ-

850/950/1050 series printers,

USING PDOS:

To use PDOS on the LQ-850/950/1050 printers, a serial

connection must be made to the host computer using a

suitable cable (Epson part no. 8297 connects the LQ's

6-pin DIN connector to a standard DB-25 port). This

cable must be connected to COM1:* on the host computer.

DIP switch positions 2-3 and 2-4 must be set to ON, and

2-5 and 2-6 to OFF.

8 data bits,

activate and configure the host computer's serial port.

PDOS is then started by booting off the supplied disk,

and following the prompts given on screen (a detailed

manual is available on the disk).

USAGE ON LQ-950:

The PDOS diagnostics for the LQ-850/1050 also operate

on the LQ-950 when the following precautions are

observed:

1) When the PDOS menus prompt for the selection of

printer type, the LQ-850 should be chosen.

2) Jumper J7 on the MONMA board must be moved from the

136 to the 80 column position when performing the

carriage motor test.

returned to its original position when testing is

completed.

* Applies to MS-DOS compatible version of PDOS.

EPSON AMERICA SERVICE, 23610 TELO AVENUE, TORRANCE, CALIF. 90505

RODUCT

UPPORT

DATE:

8/1/88

This sets the printer to 9600 baud,

and no parity.

The jumper should then be

ULLETIN

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PDOS will automatically