Models Affected DesignJet 500, DesignJet 510, DesignJet 800

If you have system error 22:10 or you are repeatedly getting an ink cartridge rejection or ink low message on the plotters front panel, you may have an ISS issue.
This could just be dirty contacts or it could be a more serious issue, so first we need to determine which is the case.

Windows users are all too familiar with the infamous and notorious Blue Screen of Death or BSOD that spells certain headaches and time for a computer user.

What to do if you turn on your HP DesignJet T120 or DesignJet T520 Plotter and it has a Blue Screen of Death, with a System Error Code of 83C0000B or 00541654 (there are others)?

Due to questions called into our shop over the years of the exact location and orientation of the Encoder Strip on the HP DesignJet 500 / 510 / 800 plotter models; we thought it was time to post some tips and photos to help you with the correct placement and orientation of the Encoder Strip during the install.

Follow the replacement instructions on page 8-76 of the Remove and Replace chapter of the Service Manual.

Here is what they don't seem to tell you.

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

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.

DesignJet 500 / 510 / 800 HP Plotter, System Error 2:10

According to documentation and experience this error us usually caused by a malfunction in the carriage assembly.
HP describes it as:

Carriage failure. The possible cause could be:
1. The Carriage PCA is not compatible with the rest of the Printer.
2. The Carriage ASIC has problems initializing.
3. The +2.5V reference voltage generated in the Carriage PCA is
out of range.
4. One of the Carriage ASIC’s cannot be found within the Serial
Bus that connects the Electronics Module to the Carriage.
5. One of the Carriage ASIC’s did not respond to the Serial Bus that
connects the Electronics Module to the Carriage Assembly.

Reinstalling the encoder strip into the service station bracket on the right end of a DesignJet 500 DesignJet 510 and DesignJet 800 plotter can be a bit tricky.
But with the Service Manual and a few photos it is actually an easy task to accomplish. 
Parts involved:
Service Station Bracket C7769-60156 aka C7769-60391
Encoder Strip for 24 inch plotter models C7769-60183
Encoder Strip for 42 inch plotter models C7770-60013

So here are a few figures and instructions to help you on your way.

Care and feeding of the HP DesignJet Plotter / Wide Format Printer Encoder strip.

The encoder strip, long shiny metal band that runs end to end of the plotter, the carriage follows this strip. It is used to assist the plotter in locating the carriage assembly along its path. The encoder strip in essence lets the carriage tell the electronics module where it is over the paper or in the ends of the plotter.

HP Designjet Multi Roll Feeder - TWI: System Error 0D0000
0D0001, 0D0002, 0D0003

A problem with Channel sensor 1 has been detected. Most common causes are poor cable connections, incorrect sensor positioning, a faulty Channel sensor or Electronics module. Follow the steps listed below to determine the actual cause of the failure and to replace the appropriate parts. Error Codes 0D0001 refers to Channel 2 Sensor, 0D0002 refers to Channel 3 Sensor, 0D0003 refers to Channel 4 Sensor

Parts required (part numbers are subject to change)

Part description	Part number
Channel Sensor (Required)	C2394-60021
Main PCA (Required)	C2394-69002

If any of the troubleshooting steps listed below solve the problem, attempt to verify printer functionality by printing several internal prints. If functionality is verified, no additional parts should be replaced. (To troubleshoot Error Codes - 0D0001, 0D0002, 0D0003 follow the same steps but substitute the corresponding channel sensor 01 - CH2, 02-CH3 & 03-CH4).