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HP Designjet 700 Series Printers - Noise Along the Carriage Path, General Y-Axis Troubleshooting

In this document:

	Introduction
	Parts required (part numbers are subject to change)
	Troubleshooting steps

KRS document number: BPP90058

Last updated: 12-Jul-2002

Minimum skill level: 2

Introduction

Noise is produced when the pen carriage cannot move freely. Common causes are the Y-belt (carriage belt) being frayed or worn, obstructions or excess friction along the carriage path, the cutter failing to reach its home position, or worn or damaged Y-axis parts. Follow the instructions listed below to help solve these errors.

Parts required (part numbers are subject to change)

Part description

Models - C4705A/B, C3195A, C4708A/B

C4706A/B, C3196A, C4709A/B, C3198A/B

Y-axis Motor (Required)

C3195-60112

C3195-60112

Y-axis Belt (Required)

C4705-60082

C4706-60082

Lubricant (Required)

6040-0854

6040-0854

Idler Pulley (Required)

C3195-60169

C3195-60169

Encoder Strip (Required)

C4713-60098

C4714-60098

Cutter Assembly (Required)

C2858-60021

C2858-60021

Y-Tensioner (Optional)

C3195-40039

C3195-40039

Part description	Models - C4705A/B, C3195A, C4708A/B	C4706A/B, C3196A, C4709A/B, C3198A/B
Y-axis Motor (Required)	C3195-60112	C3195-60112
Y-axis Belt (Required)	C4705-60082	C4706-60082
Lubricant (Required)	6040-0854	6040-0854
Idler Pulley (Required)	C3195-60169	C3195-60169
Encoder Strip (Required)	C4713-60098	C4714-60098
Cutter Assembly (Required)	C2858-60021	C2858-60021
Y-Tensioner (Optional)	C3195-40039	C3195-40039

NOTE: Attempt to verify printer functionality after each of the troubleshooting steps below. Functionality can be proven by turning the printer Off, then On, and printing several internal E or D size demo plots. If functionality is verified, no additional parts should be replaced.

Troubleshooting steps

Remove any obstructions such as jammed media from the carriage path.
Clean and lubricate the carriage rails.
Inspect the cutter, and replace if damaged or bent.
Check the main belt for fraying or other damage. Replace the belt if needed.
Verify the encoder strip is not damaged or does not touch the Carriage anywhere along the Y-axis. Replace the encoder strip if necessary.
Verify the rear carriage bushing is seated correctly. To reseat it, stand behind the printer, and push in on the bushing with a flathead screwdriver until the bushing pops into place. If a pop is not heard, it is not correctly seated.
If problems continue, replace the Y-motor, the Y-tensioner, and the idler pulley.
Verify functionality.

NOTE: No printer calibrations are required following this repair.

Copyright Hewlett-Packard Co. 2001
This information is subject to change without notice and
is provided "as is" with no warranty.
Hewlett-Packard shall not be liable for any direct,
indirect, special, incidental or consequential damages
in connection with the use of this material.