Epson LQ-1500 Quick Reference Guide

EPSON AMERICA, INC.

Product Support Bulletin

EPSON

Subject:
Date: 4/3/91

Page(s): 1 of 4

Epson printers issue beep tones when certain error conditions exist. Those beeps
can assist you in locating and repairing customer’s printers. The following error
codes are listed by product name.

NOTE:

LQ-200/AP-3000

1 beep:

1 beep:

3 beeps:

24 Pin Printer Error and Beep Codes

PSB No: P-0076
Originator JV

Most of the beeps issued by the printers are of .1 second duration with a .1
second pause between beeps. Where the beeps or the pauses are longer,
it has been noted in the text. The description “3 Beeps x 2” means two sets
of three beeps.

BEL code

A Control Panel setting is accepted.

Paper End detected
5 beeps: Abnormal carriage movement
On-Line light is flashing:

LQ-500, LQ-510, LQ-1010, LQ-850, LQ-950, LQ-1050,
L1000, AP-4000, AP-4500

1 beep:

1 beep:
3 beeps: Paper End detected
5 beeps: Abnormal carriage movement

Printhead is over heated. Carriage will stop until

the printhead cools down.

BEL code (.5 set beep)

A Control Panel setting is accepted

PSB No: P-0076

Page: 2 of 4
LQ-800, LQ-1000, L750
1 beep: BEL code
1 beep: A Control Panel setting is accepted

3 beeps: Paper End detected
5 beeps:

5 beeps:

LQ-860
1 beep:
1 beep:

3 beeps:
5 beeps:

5 beeps:

5 beeps:

Abnormal carriage movement

(.5 sec. pause between beeps)
+35V supply is abnormal

BEL code (.5 sec. beep)

A Control Panel setting is accepted

Paper End detected
Color select mechanism error

(.5 sec. beep, .5 sec between beeps)

Abnormal carriage movement

(.5 sec. beep, .5 sec between beeps)
CG ROM failure

(.5 sec. beep, .5 sec between beeps)
LQ-1500
1 beep:

5 beeps:
5 beeps:

BEL code
Paper End detected
Abnormal carriage movement

(.5 sec. pause between beeps)

LQ-2500

PSB No: P-0076
Page: 3 of

4

NOTE:

1 beep: BEL code
5 beeps:
5 beeps:

LQ-2500 LCD Codes:
00 Invalid ID request to CGROM
03

10

Printers with LCD displays use error messages along with beeps to
inform the user of problems. The following messages will help you to

troubleshoot problems.
A blank LCD screen with the Power-on LED lit can be caused by a bent

pin on one of the PROMS or jumper J1 may be set incorrectly.

Abnormal voltage­Abnormal carriage movement

(.5 sec. pause between beeps)

EEROM read/write error

Abnormal carriage movement
LQ-2550
1 beep: BEL code
3 beeps:
5 beeps: Abnormal carriage movement (.5 sec. pause between

5 beeps: Platen Gap adjustment error (.5 sec. pause between

5 beeps:

LQ-2550 LCD Codes:

00 (1)

(2)

02

Internal ROM check does not match. The versions may have been mixed.

The font could not be found. The printer’s internal program could not
find the target font.

Missing or damaged 7A ROM

Paper End detected

beeps)

beeps)

Case open

LQ-2550 cont.

PSB No: P-0076
Page: 4 of

4

03

10

A ‘Verify After Write” check to the SRAM has failed. The SRAM could be bad.
This is a motor control error.

a. CR home condition not detected at power up
b. Platen gap motor HP not detected correctly
c. Friction/Tractor feed switching error
d. Physical obstruction such as a jammed ribbon

11

Skewed paper detect error. Since the initial reading upon loading a single
sheet paper, the paper has skewed. This is a printhead wire protection
feature.

12

Illegal paper positioning.
(1)

(2)

20

CPU error. An undefined op-code was detected.

NOTES:

Four possible areas of failure are:

If the paper is loaded using the knob instead of the LOAD/EJECT switch,

this error condition will occur. This is a printhead wire protection feature.

PE sensor may have failed or is not connected.

Error codes 11 and 12 are usually caused by new operators who are

un-familiar with the machine. Both of these errors are corrected by
turning the printer off, taking out the paper and turning the printer back
on. Both features were added to ensure proper paper handling and
prevent paper jams, which can result in printhead failures.

Incorrect jumper settings on the ROMA board may cause errors 10 or

20. The correct settings are documented in the Service Manual (page
A-54, figure A-52) and on TIB LQ2550-005.

Errors 0,2, 3, 10, and 20 may require a repair, adjustment or

replacement.

EPSON

EPSON AMERICA, INC.

SERVICE

PRODUCT SUPPORT BULLETIN

PSB NO.: P-0025

DATE: 8/01/88

PAGE: 1 of 2

SUBJECT: LQ-1500 QUESTIONS AND ANSWERS

The following are common questions and their answers:

Q.

A.

Q.

A.

Q.

While printing the LQ-1500 will intermittently lock up, reset,
or lose characters,

The most probable cause of this is the solder joint on CN2 of
the UXPS board,
alleviate the intermittent problem. Only Epson Authorized
Service Centers may perform any soldering on this product.

The LQ-1500 will not go into condensed print, what is wrong?

The printer is probably in LQ mode, the LQ-1500 will only
print condensed while in the draft mode.

How do I get the LQ-1500 to print graphic characters, such as

those needed to use the line and box draw capabilities found
in many software packages?

what is the cause of this?

resoldering the connector will usually

A.

Q.

A.

Q.

A.

In order for the LQ-1500 to print graphic characters the PC

Graphics Character Emulator kit (Product Code 7493) must be

installed.
Emulator kit installed,

the IBM 5152 printer driver selected.

not 100% compatible.

There is a bank of 8 DIP switches located in the front of the
LQ-1500, what are these for?

Switches 1 through 7 are for the adjustment of print

alignment and should never be changed except by authorized
service personnel.
mode is enabled.

How can you install both the 2.0 ROM Upgrade and the PC
Graphics Character Emulator kit in the LQ-1500?

The 2.0 ROM Upgrade can be installed in either the interface
board or the UXMCL board.
installed, it must go on the interface board and the 2.0 ROM
Upgrade must be installed in the UXMCL board.

The LQ-1500 uses IBM 5152 control codes with the

so all software packages should have

This Emulation kit is

If switch 8 is on the cut sheet feeder

If the PC Emulator kit is also

EPSON AMERICA SERVICE, 23610 TEL0 AVENUE, TORRANCE, CALIF. 90505

NUMBER:

P-0025

PAGE:

2 of 2

Q.

A.

Q.

A.

Q.

A.

Once the PC Graphics Character Emulator kit is installed how

is it enabled and disabled?

To enable the PC Emulator kit DIP switch 1-4 on the Interface

board must be turned on, to select the normal LQ-1500
operation DIP switch 1-4 must be turned off.

What are the paper handling capabilities of the LQ-1500?

The LQ-1500 can handle the original sheet and up to three
no-carbon copies,
to exceed 0.008 inches or 0.2 mm.

What interfaces and options are available for the LQ-1500?

The following is a list of options available for the LQ-1500:

the total thickness of these sheets is not

7351R

7493

8753

Availability of options is subject to change without notice,
contact your nearest Sales Representative or Epson Accessory

Marketing for purchase.

EPSON AMERICA SERVICE, 23610 TEL0 AVENUE, TORRANCE, CALIF. 90505

2.0 ROM Upgrade Kit

IBM Emulation Kit

Ribbon

EPSON

EPSON AMERICA. INC.

SERVICE

P

RODUCT

S

UPPORT

B

ULLETIN

Date:
Subject:

3/1/88

Epson Printer/Ribbon Compatibility

Number: P-0013A

PURPOSE:

This list will assist in

ribbons to printers.

The numbers listed below are the Epson part

numbers and can be used to order ribbons.

the correct matching

This list supercedes

PSB-013.

EAI #

7751

7753

7754

7756

7757

8750

OEM #

N/A
N/A
N/A
N/A
N/A

ERC-04

USAGE

ALL DX
LQ-500, LQ-800, LQ-850
LQ-1000, LQ-1050
LQ-2500 (

BLACK

LQ-2500 (COLOR)
ALL 80-COLUMN MX, RX, FX,

FX-86e,

LX-800, JX-80*

of Epson

)

8753

8755

8759

8760

8762

8763

8764

*Recommended

ERC-13
ERC-08

ERC-14
ERC-16
ERC-17

N/A
N/A

LQ-1500
ALL 136-COLUMN MX, RX, FX,

FX286e

JX-80 (COLOR)
P-80
LX-80, LX-86, LX-90, HW-10
EX-800/1000 (

BLACK

)

EX-800/1000 (COLOR)

for use when color is not required.

EPSON AMERICA SERVICE, 23610 TEL0 AVENUE, TORRANCE, CALIF. 90505