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

	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

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.

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