330 350C

EEROM Model ID Configuration Procedure for the DesignJet 330 and 350C
The EEROM model ID configuration procedure only needs to be carried out if: D A preconfigured board is being reused. D The current board is incorrectly configured to the wrong model ID. D The plotter shows an unconfigured model ID system error (Steady 135). It is very rare that these situations will ever occur. Configure the plotter model ID as follows: 1 Remove the left cover ' page 610. 2 Disconnect the media motor encoder cable from the main PCA (connector ENC X). 3 Turn the plotter ON in Service Mode 1. 4 Hold the ALT key down and press the Deconfiguration Mode key.

ALT Deconfiguration Mode

5 Once in Deconfiguration Mode, the first and second LED columns should light up.
6 Using a suitable tool, shortcircuit pins 1 and 2 (the first two pins on the right) of the media motor encoder connector (ENC X). The second and third LED columns should light up as you shortciruit the two pins. 7 Once you have shortcircuited the two pins, the first and second LED columns should light up again.
8 Press the Shift key to exit the Deconfiguration Mode.

Troubleshooting

C469990000
9 Configure the plotter with the correct model ID as follows: Only one opportunity is given to perform this procedure and there is no indication that it was successful. If the plotter is to be configured as a DesignJet 350C (Color) plotter, hold the ALT key down and press the two Color Configuration keys at the same time.

ALT Color Configuration

If the plotter is to be configured as a DesignJet 330 (Monochrome) plotter, hold the SHIFT key down and press the two Mono Configuration keys at the same time.

Mono Configuration

10 Turn the plotter OFF. 11 Reconnect the media motor encoder cable to the main PCA (connector ENC X). 12 Turn the plotter ON and print the Demo Plot to check if the plotter has been correctly configured. If the plotter is still incorrectly configured, repeat the model ID configuration procedure from step 2. 13 Because all plotter calibrations are reset during the model ID configuration procedure, the plotter must be recalibrated. To perform the accuracy calibration ' page 78.

ServiceMode 1

Form Feed

Bench Run

Modular Test

with ALT

Bail Cycle Test

Front-Panel Test

Carriage-Axis Test

SHIFT Stop the Test

Carriage Test

Media-Axis Test

Sensors Test Deconfig. Mode

ALT with ALT with SHIFT

Color Configuration Mono Configuration

ServiceMode 2

Bail Cycle Test Print Quality

Electrical Test

Accuracy Calibration

Servo/Encoder Test

Media Type

Print Quality

Service Monitor
Calibrations and Adjustments

Purpose

The accuracy calibration (Xaxis calibration) procedure is used to correct the endpoint accuracy of the media axis. The carriage axis does not require calibration and is used to calibrate the media axis. The accuracy calibration also includes calibration of the optical line sensor on the carriage.

The accuracy calibration is also used to correct the error of the Xaxis movement to avoid banding. Perform the accuracy calibration whenever the: D D D D D D EEROM is erased Electronics module is replaced Drive roller is removed or replaced Media (Xaxis) motor is removed or replaced Driveroller gear is removed or replaced Cartridge carriage is replaced
D Mark encoder is removed or replaced D Optical sensor is removed or replaced
What is the EndPoint Accuracy Specification ?
The endpoint accuracy specifies how accurately a plotter can draw a given length of line. The endpoint accuracy specification for the plotters is 0.38 mm (0.015 in) or 0.2% of the specified vector length, whichever is greater, at 23dC (73dF), at 5060% relative humidity on HP special polyester film. Use the following formula to calculate the plotter's accuracy:
Measured length Desired length Desired length

x 100 = %Error

What can Affect the EndPoint Accuracy ?
Various part tolerances inside the plotter affect the accuracy (in particular the drive roller). Other outside influences include: D Media thickness. Thicker media creates longer lines. D Media expansion. As the media grows, so do the lines. D The application software may be instructing the plotter to draw an incorrect line length. D The EEROM has been cleared. The accuracy constants are stored in this nonvolatile memory component.
Before Performing the Accuracy Calibration
1 Under normal environmental conditions and on HP inkjet polyester D/A1size media, plot a drawing that contains two X" marks nominally positioned 500 mm (19.69 in.) apart. 2 Measure the distance between the centers of the X" marks on the plot. Accuracy calibration is needed if this distance is not 500 mm (19.69 in) 1 mm (0.04 in). If the measured accuracy, media thickness, or environmental conditions vary greatly from the factory standards, recalibrate the plotter by continuing with the following procedure.

230 250C

Performing the Accuracy Calibration on the DesignJet 230 and 250C

1 Read w Before Performing the Accuracy Calibration above. 2 Place a sheet of HP inkjet polyester film over the top of the plotter for 10 minutes to let the sheet stabilize to the environmental conditions. Use a sheet of approximate size A1 or D. You must use polyester film. Otherwise the optical sensor on the carriage will be calibrated incorrectly, and the plotter will have problems loading some types of media. 3 In service mode 2, set the Media Type on the front panel to Film.
4 Load the film, with the matte (dull) side down, in portrait orientation into the plotter. 5 When the Ready LED lights up, hold down the SHIFT key and press Accuracy Calib. Print. The Ready LED begins to flash and the plotter plots a calibration plot. The plotter ejects the sheet, and the Load Media LED lights up. 6 Unload the sheet.
Media Type Accuracy Calib. Print SHIFT
7 Cut the blank end off the film by cutting along the long dashed line on the plot; the cut must be very straight.

Cut along this line

8 Wait until the ink on the sheet is dry. 9 Reload the sheet facedown into the plotter, in the direction indicated by the arrows on the calibration plot. 10 When the Ready LED lights up, hold down the SHIFT key and press Accuracy Calib. Read, The Ready LED begins to flash. The plotter takes less than 1 minute to: read the calibration sheet; calculate the calibration data; save the data in the EEROM; and eject the sheet. 11 Unload the sheet.

Accuracy Calib. Read

Performing the Accuracy Calibration on the DesignJet 330 and 350C
1 Read w Before Performing the Accuracy Calibration on page 79. 2 Place a sheet of HP inkjet polyester film over the top of the plotter for 10 minutes to let the sheet stabilize to the environmental conditions. Use a sheet of approximate size A1 or D. You must use polyester film. Otherwise the optical sensor on the carriage will be calibrated incorrectly, and the plotter will have problems loading some types of media. 3 In service mode 2, set the Media Type on the front panel to Film.
4 Load the film, with the matte (dull) side down, in portrait orientation into the plotter. 5 When the Ready LED lights up, press Accuracy Calibration. The Ready LED begins to flash and the plotter takes several minutes to plot the calibration plot. The plotter ejects the sheet, and the Load Media LED lights up. 6 Unload the sheet. 7 Wait until the ink on the sheet is dry. 8 Reload the sheet facedown into the plotter, in the direction indicated by the arrows on the calibration plot.

Media Type Accuracy Calibration
The Ready LED begins to flash. The plotter takes less than 1 minute to: read the calibration sheet; calculate the calibration data; save the data in the EEROM; and eject the sheet. 9 Unload the sheet.

Removing the Top Cover

1 Open the top cover.
3 Slide the cover to the left, so that the other hinges uncouple.
2 Push the righthand side of the cover slightly back, so that the rightmost hinge uncouples.
Reassembling: Close the cover and click each hinge into place. 4 Remove the cover from the plotter.

Removal and Replacement

Removing the Rollfeed Assembly
3 Remove the two screws that attach the rollfeed brackets to the plotter.
4 Remove the rollfeed assembly from the plotter by first removing the left mounting bracket and then the right mounting bracket.
2 While pressing the tabs on the locking bracket toward the center of the plotter, pull up on the rollfeed assembly.
Removing the Left EndCover
1 Remove the top cover ' page 67.
C 4 Pull the endcover up, and remove it from the plotter.
2 Remove the rollfeed assembly ' page 68. 3 Release the three clips at the bottom of the endcover: first the side clip, then the front and back clips. These may be stiff.
Reassembling: It's not easy to reinstall the endcovers on the plotter. With some practice, you should learn the knack. As a guide, before you replace an endcover, take a look at the various clips on its inside, and identify where they fit on the plotter. Make sure that the primer plunger is installed properly when reinstalling the endcover.