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R
WORD PROCESSOR
SERVICE MANUAL
MODEL:DP-525CJ/DP-530CJ/DP-540CJ/DP-550CJ
LW-800ic/LW-810ic/LW-810icBL/LW-840ic
REVISED EDITION
SERVICE MANUAL
CONTENTS
PART I THEORY OF OPERATION
CHAPTER 1 MECHANICAL THEORY ....................................................................... 1-1
1. Ink Jet Printer ........................................................................................................... 1-1
1.1. Ink Jet Printer System Configuration .......................................................................... 1-2
1.2. Ink Jet Operation ........................................................................................................ 1-4
1.2.1. Paper Feed Mechanism................................................................................ 1-4
1.2.2. Carriage Assembly ....................................................................................... 1-7
1.2.3. Carriage Motion Control.............................................................................. 1-10
1.2.4. Maintenance Station Operation................................................................... 1-11
1.2.4.1. Spitting ................................................................................................. 1-12
1.2.4.2. Wiping .................................................................................................. 1-13
1.2.4.3. Capping ................................................................................................ 1-14
1.2.4.4. Purging ................................................................................................. 1-14
1.2.5. Sensors ...................................................................................................... 1-15
1.2.5.1. Carriage Home Position Sensor ............................................................ 1-15
1.2.5.2. PE Sensor ............................................................................................ 1-16
1.3. INK CHG (Ink Change) Functions............................................................................. 1-17
1.3.1. Ink Cartridge Installation/Replacement ....................................................... 1-17
1.3.2. Automatic Print head Cleaning (Purging) .................................................... 1-17
2. Keyboard................................................................................................................ 1-18
CHAPTER 2 ELECTRICAL THEORY ........................................................................ 2-1
1. System Configuration ............................................................................................... 2-1
1.1. Main PCB (Printed Circuit Board) ............................................................................... 2-1
1.2. Switch PCB (Printed Circuit Board)............................................................................. 2-1
1.3. Keyboard FPC (Flexible Printed Circuit) ..................................................................... 2-1
1.4. FDD (Floppy Disk Drive) Module ................................................................................ 2-1
1.5. CRT Display ............................................................................................................... 2-1
2. Ink Jet Printer Configuration..................................................................................... 2-3
2.1. Ink Cartridge............................................................................................................... 2-3
2.2. Carriage Motor ........................................................................................................... 2-3
2.3. Line Feed Motor ......................................................................................................... 2-3
2.4. Carriage Home Position Sensor.................................................................................. 2-3
2.5. PE (Paper End) Sensor .............................................................................................. 2-3
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SERVICE MANUAL
3. Power Supply Circuit ................................................................................................ 2-4
3.1. Configuration.............................................................................................................. 2-4
3.2. +24V Generator.......................................................................................................... 2-5
3.3. +5V Generator............................................................................................................ 2-5
4. Reset Circuit............................................................................................................. 2-6
4.1. Configuration.............................................................................................................. 2-6
5. CBIC and Peripherals............................................................................................... 2-7
5.1. CBIC #9 ..................................................................................................................... 2-7
5.2. Main ROM (#12, #13) ................................................................................................. 2-7
5.3. Main RAM (#10, #11) ................................................................................................. 2-7
5.4. Video RAM (#7).......................................................................................................... 2-7
5.5. Printer Driver Circuits (#2, #3, Q1 to Q4, and Q14 to Q17) ......................................... 2-7
5.6. FDC (Floppy Disk Controller)...................................................................................... 2-7
5.7. Clock Circuit............................................................................................................... 2-8
5.8. Buzzer Drive Circuit ................................................................................................... 2-8
5.9. Country Specification Change-over ............................................................................ 2-9
5.10. RS-232C I/F Circuit .................................................................................................. 2-10
6. Printer Control ........................................................................................................ 2-11
6.1. Ink Jet Head Control................................................................................................. 2-11
6.2. Carriage Motor Control ............................................................................................. 2-12
6.3. Line Feed Motor Control ........................................................................................... 2-13
6.4. Carriage Home Position Sensor................................................................................ 2-14
6.5. PE Sensor ................................................................................................................ 2-14
7. Switch PCB ............................................................................................................ 2-15
7.1. Configuration............................................................................................................ 2-15
8. Keyboard System ................................................................................................... 2-16
8.1. FPC Operation ......................................................................................................... 2-16
8.2. Keyboard Scan......................................................................................................... 2-17
8.3. Keyboard Control Circuit........................................................................................... 2-18
9. CRT Control ........................................................................................................... 2-20
9.1. Configuration............................................................................................................ 2-20
9.2. SRAM and Display Screen Relationship ................................................................... 2-21
9.2.1. SRAM (#7) Access ..................................................................................... 2-22
9.2.2. CRT Display Timing Chart .......................................................................... 2-23
10. FDD (Floppy Disk Drive) Control ............................................................................ 2-24
10.1. FDD Configuration.................................................................................................... 2-24
10.2. FDD Operation ......................................................................................................... 2-25
10.2.1. Basic Operation .......................................................................................... 2-25
10.2.2. Interface between CBIC (#8) and FDC (#5)................................................. 2-25
10.3. FDD Module ............................................................................................................. 2-26
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SERVICE MANUAL
10.3.1. Read/Write Circuit ...................................................................................... 2-26
10.3.2. Motor Drive Circuit...................................................................................... 2-26
10.3.3. Sensor Circuits ........................................................................................... 2-26
PART II REPAIR
CHAPTER 3 TROUBLESHOOTING .......................................................................... 3-1
1. Introduction .............................................................................................................. 3-1
2. Precautions .............................................................................................................. 3-1
2.1. Personal Safety .......................................................................................................... 3-1
2.2. Handling ESD-Sensitive Parts .................................................................................... 3-1
3. Checks Before Repair .............................................................................................. 3-2
4. Checks After Repair ................................................................................................. 3-3
5. Troubleshooting Flow Charts.................................................................................... 3-4
6. Failure Analysis ........................................................................................................ 3-6
7. SELF-TESTS.......................................................................................................... 3-13
7.1. SERIAL NUMBER Input Display ............................................................................... 3-13
7.2. Self Print Mode......................................................................................................... 3-14
7.3. Self-Test Mode......................................................................................................... 3-17
7.3.1. Display (CRT) Test ..................................................................................... 3-19
7.3.1.1. Cross Hatch Pattern Test ...................................................................... 3-20
7.3.1.2. Full Dot Screen Test ............................................................................. 3-21
7.3.1.3. Blank Screen Test ................................................................................ 3-22
7.3.1.4. H Pattern Test ...................................................................................... 3-23
7.3.1.5. mw Pattern Test.................................................................................... 3-24
7.3.1.6. Dot Pattern Test.................................................................................... 3-25
7.3.2. Print Checks ............................................................................................... 3-26
7.3.2.1. Print Test Pattern 1............................................................................... 3-26
7.3.2.2. Print Test Pattern 2............................................................................... 3-29
7.3.2.3. Dot Patterns.......................................................................................... 3-31
7.3.3. Keyboard Tests........................................................................................... 3-33
7.3.4. FDD Tests .................................................................................................. 3-36
7.3.4.1. FDD Test .............................................................................................. 3-36
7.3.4.2. Special FDD Test.................................................................................. 3-37
7.3.4.3. FDD SW Test ....................................................................................... 3-41
7.3.4.4. FDD Write Error Rate Check ................................................................ 3-42
7.3.4.5. FDD Read Error Rate Check................................................................. 3-44
7.3.5. PE (Paper-End) Sensor Test....................................................................... 3-46
7.3.6. CR (Carriage Reset) Test ........................................................................... 3-47
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SERVICE MANUAL
7.3.7. DISK TYPE ................................................................................................ 3-48
7.3.8. RS-232C Test ("Echo Back") ...................................................................... 3-49
CHAPTER 4 COMPONENT DISASSEMBLY............................................................. 4-1
1. Covers...................................................................................................................... 4-1
1.1. Upper Cover............................................................................................................... 4-2
1.1.1. Removing the Upper Cover .......................................................................... 4-2
1.1.2. Removing the Front Cover ........................................................................... 4-6
1.1.3. Installing the Upper Cover ............................................................................ 4-7
2. Keyboard Assembly ................................................................................................. 4-8
2.1. Removing the Keyboard ............................................................................................. 4-8
2.2. Installing the Keyboard ............................................................................................... 4-9
3. Ink Jet Printer Assembly......................................................................................... 4-10
3.1. Removing the Printer Assembly ............................................................................... 4-11
3.2. Installing the Printer Assembly.................................................................................. 4-11
3.3. Disassembling the Printer Assembly......................................................................... 4-12
3.3.1. Removing the CA Unit ................................................................................ 4-13
3.3.2. Installing the CA Unit .................................................................................. 4-13
3.3.3. Disassembling the PF Unit.......................................................................... 4-14
3.3.3.1. Removing the Form .............................................................................. 4-15
3.3.3.2. Removing the Release Lever and Release Shaft .................................. 4-16
3.3.3.3. Removing the ACF Shaft Assembly...................................................... 4-17
3.3.3.4. Removing the Pressure Rollers and Roller Holders............................... 4-18
3.3.3.5. Removing the Holder Plate ................................................................... 4-19
3.3.3.6. Removing the Hopper Assembly........................................................... 4-20
3.3.3.7. Disassembling the Paper Feed Assembly ............................................. 4-22
3.3.3.8. Removing the Eject Roller Assembly and the PF Roller Assembly........ 4-23
3.3.3.9. Removing the Motor Frame Assembly .................................................. 4-24
3.3.3.10. Removing the PF Stopper..................................................................... 4-25
3.3.3.11. Removing the PE Sensor...................................................................... 4-26
3.3.4. Disassembling the CA Unit ......................................................................... 4-27
3.3.4.1. Removing the Carriage......................................................................... 4-28
3.3.4.2. Removing the Carriage Drive................................................................ 4-30
3.3.4.3. Removing the Star Wheel Holder Assembly ......................................... 4-31
3.3.4.4. Removing the MS Holder Assembly...................................................... 4-32
3.3.4.5. Removing the Leaf Switch (Home Position Sensor) .............................. 4-33
3.3.4.6. Removing and Mounting the KB Switch Assy........................................ 4-34
3.4. Adjusting the CA Unit ............................................................................................... 4-35
3.4.1. Adjusting the Carriage Home Position......................................................... 4-35
3.4.2. Adjusting Belt Tension ................................................................................ 4-36
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SERVICE MANUAL
4. Removing the FDD Assembly ................................................................................ 4-39
5. Switch PCB ............................................................................................................ 4-40
5.1. Removing the Switch PCB ....................................................................................... 4-41
5.2. Installing the Switch PCB.......................................................................................... 4-41
6. Removing the Main PCB ........................................................................................ 4-42
7. Removing the Shield Plate (ESD) .......................................................................... 4-43
CHAPTER 5 MONITOR REPAIR AND ADJUSTMENT (MODEL CT-1450) .............. 5-1
1. Safety Precautions ................................................................................................... 5-1
2. Theory of Operation ................................................................................................. 5-3
2.1. Video Process ............................................................................................................ 5-3
2.2. Video Amplifier........................................................................................................... 5-3
2.3. Vertical Circuitry ......................................................................................................... 5-4
2.4. Horizontal Sync and Drive .......................................................................................... 5-4
2.5. Horizontal Output Transistor ....................................................................................... 5-5
2.6. High Voltage and Focus ............................................................................................. 5-5
3. Adjustment and Servicing......................................................................................... 5-6
3.1. Test Pattern................................................................................................................ 5-6
3.2. Measurement Conditions ............................................................................................ 5-7
3.2.1. Display Dimension Measurement.................................................................. 5-7
3.2.2. Raster Centering & Tilt Adjustment (see Fig. 5.3) ......................................... 5-7
3.3. Adjustments ............................................................................................................... 5-8
3.3.1. B+ Voltage Adjustments: None required. ..................................................... 5-8
3.3.2. Horizontal Adjustments................................................................................. 5-8
3.3.3. Vertical Adjustments (see Fig. 5.5) ............................................................... 5-9
3.3.4. Brightness & Contrast ................................................................................... 5-9
3.3.5. Focus Adjustment......................................................................................... 5-9
3.3.6. Raster Geometry Adjustments .................................................................... 5-10
3.3.6.1. Pin Cushion/Barrel Correction (top, bottom and sides) Adjustment........ 5-10
3.3.6.2. Trapezoidal Correction (corners) Adjustment ........................................ 5-12
4. Troubleshooting ..................................................................................................... 5-13
5. Control Parts Location............................................................................................ 5-14
6. Monitor Block Diagram ........................................................................................... 5-15
CHAPTER 6 MAINTENANCE .................................................................................... 6-1
1. Lubrication................................................................................................................ 6-1
1.1. Lubricants................................................................................................................... 6-1
1.2. Precautions ................................................................................................................ 6-1
1.3. Lubrication Points....................................................................................................... 6-1
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SERVICE MANUAL
2. Replacing the Ink Cartridge ...................................................................................... 6-5
3. Cleaning the Print Head ........................................................................................... 6-9
3.1. Cleaning the Print Head Automatically........................................................................ 6-9
3.2. Cleaning the Ink Jet Nozzles and Contacts ................................................................. 6-9
3.3. Cleaning the Bracket Contacts (Carriage)................................................................. 6-10
APPENDIX A SPECIFICATIONS........................................................................... APP-1
1. Electrical System................................................................................................. APP-1
2. Printing ................................................................................................................ APP-2
3. Keyboard............................................................................................................. APP-4
4. Monitor (CT-1450) ............................................................................................... APP-4
5. Environmental Tolerance .................................................................................... APP-5
6. Dimensions & Weight.......................................................................................... APP-6
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SERVICE MANUAL
FIGURES
Figure Title Page
Fig. 1.1 Ink Jet Printer Assembly ....................................................................................... 1-1
Fig. 1.2 General View of Printing Mechanism .................................................................... 1-3
Fig. 1.3A Paper Feed Mechanism........................................................................................ 1-4
Fig. 1.3B Paper Feed Mechanism........................................................................................ 1-5
Fig. 1.4 Paper Eject System .............................................................................................. 1-5
Fig. 1.5 Paper Setting System........................................................................................... 1-6
Fig. 1.6 Printer Flat Cable to Main PCB ............................................................................. 1-7
Fig. 1.7 Printer Flat Cable to Cartridge Alignment .............................................................. 1-8
Fig. 1.8 Ink Jet Cartridge to Flat Cable Alignment.............................................................. 1-9
Fig. 1.9 Carriage Motion Control...................................................................................... 1-10
Fig. 1.10 Print Maintenance Operation - Spitting................................................................ 1-12
Fig. 1.11 Print Maintenance Operation - Wiping................................................................. 1-13
Fig. 1.12 Print Maintenance Operation - Capping .............................................................. 1-14
Fig. 1.13 Carriage Home Position Sensor.......................................................................... 1-15
Fig. 1.14 PE Sensor Mechanism ....................................................................................... 1-16
Fig. 1.15 Keyboard Assembly............................................................................................ 1-18
Fig. 1.16 Key Top/Key Stem Assembly ............................................................................. 1-19
Fig. 1.17 LCD Unit Installation in the Upper Cover............................................................. 1-21
Fig. 1.18 LCD of DP-525CJ/LW-800ic ............................................................................... 1-22
Fig. 1.19 LCD of DP-530CJ/LW-810ic and LW-810icBL .................................................... 1-23
Fig. 1.20 LCD of DP-540CJ, DP-550CJ/LW-840ic ............................................................. 1-24
Fig. 2.1 Major Electronic Component Parts........................................................................ 2-2
Fig. 2.2 Power Supply Circuit ............................................................................................ 2-4
Fig. 2.3 Timing Chart of +24V Generation Circuit............................................................... 2-5
Fig. 2.4 Timing Chart of +5V Generation Circuit ................................................................ 2-5
Fig. 2.5 Reset Circuit......................................................................................................... 2-6
Fig. 2.6 Buzzer Drive Circuit.............................................................................................. 2-8
Fig. 2.7 Country & Model Specification Change-over Circuit .............................................. 2-9
Fig. 2.8 RS-232C I/F Circuit ............................................................................................ 2-10
Fig. 2.9 Ink Jet Head Drive Circuit ................................................................................... 2-11
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SERVICE MANUAL
Figure Title Page
Fig. 2.10 Carriage Motor Drive Circuit................................................................................ 2-12
Fig. 2.11 Line Feed Motor Drive Circuit ............................................................................. 2-13
Fig. 2.12 Carriage Home Position Sensor Circuit ............................................................... 2-14
Fig. 2.13 PE Sensor Detection Circuit ............................................................................... 2-14
Fig. 2.14 External View of the Switch PCB ........................................................................ 2-15
Fig. 2.15 Switch PCB Circuit ............................................................................................. 2-15
Fig. 2.16 Key/FPC Operation ............................................................................................ 2-16
Fig. 2.17 Electrode Wiring ................................................................................................. 2-17
Fig. 2.18 Keyboard Control Circuit..................................................................................... 2-18
Fig. 2.19 Keyboard Matrix ................................................................................................. 2-19
Fig. 2.20 Keyboard Symbols (Corresponding to Keyboard Matrix in Fig. 2.19) ................... 2-19
Fig. 2.21 LCD Display Operation Block Diagram................................................................ 2-20
Fig. 2.22 Example of Control Signal Timing Chart.............................................................. 2-21
Fig. 2.23 LCD Drive Voltage Generation Circuit (Minus Voltage VEE)................................ 2-22
Fig. 2.24 LCD Drive Voltage Generation Circuit (Plus Voltage VEE) .................................. 2-22
Fig. 2.25 CFL Backlight Circuit .......................................................................................... 2-23
Fig. 2.26 FDD Block Diagram............................................................................................ 2-25
Fig. 3.1 Troubleshooting Flowchart.................................................................................... 3-4
Fig. 3.2 Troubleshooting Flowchart (continued) ................................................................. 3-5
Fig. 3.3 Serial Number Entry Display ............................................................................... 3-14
Fig. 3.4 Self-Print Pattern ................................................................................................ 3-15
Fig. 3.5 Results of Self-Print Test .................................................................................... 3-17
Fig. 3.6 Self-Test Menu ................................................................................................... 3-18
Fig. 3.7 LCD Test Menu .................................................................................................. 3-20
Fig. 3.8 CHECK Test Display (magnified) ........................................................................ 3-21
Fig. 3.9 CROSS Test Display (magnified)........................................................................ 3-22
Fig. 3.10 BLACK Test Display ........................................................................................... 3-23
Fig. 3.11 DISP Q Test Display (magnified) ........................................................................ 3-24
Fig. 3.12 Slant Line Test Display (magnified)..................................................................... 3-25
Fig. 3.13 Printer Check #1 (in progress) Display................................................................ 3-26
Fig. 3.14 Diagram of Print Test Pattern 1 .......................................................................... 3-27
Fig. 3.15 Sample Print Test Pattern 1................................................................................ 3-28
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SERVICE MANUAL
Figure Title Page
Fig. 3.16 Printer Check #2 (in progress) Display................................................................ 3-29
Fig. 3.17 Sample Test Pattern 2........................................................................................ 3-30
Fig. 3.18 Dot Patterns for Print Test #2 (Patterns 1 to 4) ................................................... 3-31
Fig. 3.19 Dot Patterns for Print Test #2 (Patterns 5 and 6) ................................................ 3-32
Fig. 3.20 Keyboard Test #1 Display................................................................................... 3-33
Fig. 3.21 Keyboard Test Key Locations ............................................................................. 3-33
Fig. 3.22 FDD Test (in progress) Display........................................................................... 3-36
Fig. 3.23 Special FDD Test Display 1 ................................................................................ 3-37
Fig. 3.24 Special FDD Test Display 2 ................................................................................ 3-38
Fig. 3.25 Special FDD Test (in progress) Display .............................................................. 3-38
Fig. 3.26 Special FDD Test Display 1 ................................................................................ 3-41
Fig. 3.27 FDD Write Error Rate Check Display .................................................................. 3-42
Fig. 3.28 FDD Read Error Rate Check Display .................................................................. 3-44
Fig. 3.29 PE Sensor Test Start Display 1 .......................................................................... 3-46
Fig. 3.30 PE Sensor Test Start Display 2 .......................................................................... 3-46
Fig. 3.31 CR Test Start Display 1 ...................................................................................... 3-47
Fig. 3.32 Self-Test Menu (DISK TYPE Setting) ................................................................. 3-48
Fig. 3.33 RS232C Echo-Back Test Start Display ............................................................... 3-49
Fig. 4.1 Cover Assemblies................................................................................................. 4-1
Fig. 4.2 Removing the Sub Paper Support and Paper Support .......................................... 4-3
Fig. 4.3 Removing the Top Cover ...................................................................................... 4-4
Fig. 4.4 Removing the Upper Cover................................................................................... 4-5
Fig. 4.5 Removing the Core............................................................................................... 4-8
Fig. 4.6 Removing the LCD Unit ........................................................................................ 4-9
Fig. 4.7 Removing the LCD Lower Cover......................................................................... 4-10
Fig. 4.8 Removing the LCD PCB (1)................................................................................ 4-12
Fig. 4.9 Removing the LCD PCB (2)................................................................................ 4-13
Fig. 4.10 Removing the LCD PCB (3)................................................................................ 4-14
Fig. 4.11 Removing the LCD PCB (4)................................................................................ 4-15
Fig. 4.12 Removing the LCD PCB (5)................................................................................ 4-16
Fig. 4.13 Removing LCD Latch and LCD Plate .................................................................. 4-17
Fig. 4.14 Installing LCD Latch............................................................................................ 4-19
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SERVICE MANUAL
Figure Title Page
Fig. 4.15 Fitting LCD Volume Guide to LCD Volume Knob................................................. 4-21
Fig. 4.16 Installing the LCD Lower Cover........................................................................... 4-22
Fig. 4.17 Fitting the Core .................................................................................................. 4-23
Fig. 4.18 Installing the Hinge Assy..................................................................................... 4-24
Fig. 4.19 Removing the Keyboard Assembly ..................................................................... 4-25
Fig. 4.20 Installing the Keyboard ....................................................................................... 4-26
Fig. 4.21 Removing the Carrying Handle ........................................................................... 4-27
Fig. 4.22 Ink Jet Printer Assembly ..................................................................................... 4-28
Fig. 4.23 Disassembling the Printer Assembly ................................................................... 4-30
Fig. 4.24 Construction of the PF Unit................................................................................. 4-32
Fig. 4.25 Removing the Form ............................................................................................ 4-33
Fig. 4.26 Removing the Release Lever and Release Shaft from the PF Base Assembly .... 4-34
Fig. 4.27 Removing the ACF Shaft Assembly .................................................................... 4-35
Fig. 4.28 Removing the Pressure Rollers and Roller Holders............................................. 4-36
Fig. 4.29 Removing the Holder Plate ................................................................................. 4-37
Fig. 4.30 Removing the Hopper Assembly......................................................................... 4-39
Fig. 4.31 Disassembling the Paper Feed Assembly ........................................................... 4-40
Fig. 4.32 Removing the Eject Roller Assembly and the PF Roller Assembly ...................... 4-41
Fig. 4.33 Removing the Motor Frame Assembly ................................................................ 4-42
Fig. 4.34 Removing the PF Stopper................................................................................... 4-43
Fig. 4.35 Removing the PE Sensor.................................................................................... 4-44
Fig. 4.36 Construction of the CA Unit ................................................................................ 4-45
Fig. 4.37 Printer Mechanism.............................................................................................. 4-46
Fig. 4.38 Removing the Carriage ....................................................................................... 4-47
Fig. 4.39 Removing the Carriage Drive.............................................................................. 4-48
Fig. 4.40 Removing the Star Wheel Holder Assembly........................................................ 4-49
Fig. 4.41 Removing the MS Holder Assembly.................................................................... 4-50
Fig. 4.42 Removing the Leaf Switch (Home Position Sensor) ............................................ 4-51
Fig. 4.43 Removing and Mounting the KB Switch Assy...................................................... 4-52
Fig. 4.44 Adjusting the Belt Tension .................................................................................. 4-55
Fig. 4.45 Measuring Friction during Carriage Movement .................................................... 4-56
Fig. 4.46 Removing the FDD Assembly ............................................................................. 4-57
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SERVICE MANUAL
Figure Title Page
Fig. 4.47 Switch PCB ........................................................................................................ 4-58
Fig. 4.48 Switch PCB ........................................................................................................ 4-59
Fig. 4.49 Removing the Main PCB..................................................................................... 4-60
Fig. 4.50 Removing the Shield Plate (ESD) ....................................................................... 4-61
Fig. 5.1 Carriage Assembly Lubrication Points................................................................... 5-2
Fig. 5.2 Paper Feed Assembly Lubrication Points.............................................................. 5-3
Fig. 5.3 Eject Roller Assembly and PF Roller Assembly Lubrication Points........................ 5-4
Fig. 5.4 Open the Paper Support and Top Cover and
Tilting the LCD to the Uprige Position ................................................................... 5-6
Fig. 5.5 Removing the Ink Jet Cartridge............................................................................. 5-7
Fig. 5.6 Removing the Protection Tape.............................................................................. 5-7
Fig. 5.7 Placing the Cartridge in the Carriage .................................................................... 5-8
Fig. 5.8 Fitting the Cartridge in the Carriage ...................................................................... 5-8
Fig. 5.9 Cleaning the Bracket Contacts............................................................................ 5-11
TABLES
Table 1.1 Summary of Maintenance Operations ................................................................. 1-11
Table 2.1 Clock Circuit ......................................................................................................... 2-8
Table 2.2 Table of LCD Modules ........................................................................................ 2-21
Table 2.3 FDC(#5) and FDD Module Links (Interface Signals)............................................ 2-24
Table 3.1 Failure Analysis .................................................................................................... 3-6
Table 3.2 FDD Special Test Error Stage Codes ................................................................. 3-39
Table 3.3 FDD Special Test Error Codes............................................................................ 3-40
Table 5.1 Recommended Lubricants .................................................................................... 5-1
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THEORY
SERVICE MANUAL Mechanical
PART I THEORY OF OPERATION
CHAPTER 1 MECHANICAL THEORY
1. Ink Jet Printer
Fig. 1.1 Ink Jet Printer Assembly
1-1
THEORY
Mechanical SERVICE MANUAL
1.1. Ink Jet Printer System Configuration
The ink jet printer contains the following components: