Table of Contents

Service Tests and Utilities 4-1

Service Tests (Diagnostics) 4-3

Entering the Service Tests Menu 4-4

1.Electronic Systems 4-5

2.EIO Card 4-10

3.Hard Disk Drive 4-12

4.Ink Pressure System 4-14

5.Scan Axis 4-17

6.Paper Axis 4-20

7.Drop Detector 4-22 Service Utilities 4-25

Entering the Service Utilities Menu 4-26

1.Tubes Purge 4-28

2.Release Info 4-32

3.Set Asian PS Fonts 4-33

4.Printer Model Type 4-35

5.Overdrive Cleaning 4-37

6.EEROM Utilities 4-38

7.Printhead Check 4-41

8.Mon. Mode Baud Sel. 4-42

Service Calibrations 5-1

Service Calibrations 5-2

Entering the Service Calibrations Menu 5-4

1.Accuracy Calibration 5-6

2.Line Sensor 5-9

3.Service Station 5-11

4.Roller Mark Position 5-13

5.Pen to Paper Spacing 5-15

6.Color to Color calibration 5-16

7.Calibrations Backup 5-19

8.Pen Alignment 5-22

Carriage Height Calibration 5-24

HP DesignJets 1050C and 1055CM Printers Service Manual

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