CHAPTER 4 DIAGNOSTICS
Contents
1. PRINTER DIAGNOSTICS MENU Selection 4 2 The following section details the procedures for navigating through the Diag nostics Menu of the control panel a flow chart is provided as an aid for navigation A full description of each diagnostic function is provided in the Diagnostic Functions section of this chapter The features of the diagnostics menu are as follows To select the diagnostic mode on the machine carry out the following 1 Atthe front operator panel with the machine key inserted turn the 3 position keyswitch to the three o clock position Diagnostic mode position 3 Select ing Diagnostic Mode figure below refers 2 The control panel displays PRINTER DIAGNOSTICS MENU 3 Using the Scroll Menu up down arrow function buttons the required diagnostic mode can be selected Refer to the Diagnostics Menu Sheet Flow Chart Sheet 1 to 5 4 To leave the diagnostics mode select the switch position 1 or 2 according to the required GO key mode The menu page reverts to Step Mode with the key selected for normal operating mode Switch Position Selected For Diagnostic Mode User Manual Chapter Issue 1 May 02 DIAGNOSTICS DCLeH 248 PRINTER DIAGNOSTICS MENU Menu Pages Output Tests Chapter Issue 1 May 02 Menu pages are offered in sequence and can be accessed by scrolling through to the required page Scroll Menu Function Buttons2. In general when a View Output function test is selected the action is per formed on pressing the GO button buttons However tests No 7 and 8 listed below pressing the GO button buttons toggles between ON and OFF 7 Toggle Table Clamps 8 Toggle Table Vacuum Pressing the Stop function key stops the test in progress Pressing the Exit function button returns the menu to the diagnostics page The following Menu Sheets are presented in the form of flow charts for easy reference User Manual 4 3 DIAGNOSTICS PRINTER DIAGNOSTICS MENU DERK P 4 8 Key Switch Positions C START Position 1 GO 2 GO Keys p y Position 2 GO 1 GO key Key Switch Positions 1 3 Position 3 Diagnostics To Sheet 2 Menu Protection To Sheet 2 Note Menu Protection Pressing either SCROLL MENU key sets all machine pages to Opens the Diagnostics selected unit and displays Display Language next previous diagnostic page Figure 4 1 Diagnostics Flow Chart Sheet 1 4 4 User Manual Chapter Issue 1 May 02 DIAGNOSTICS DEK 248 PRINTER DIAGNOSTICS MENU From Sheet 1 Returns to View Display Units To Sheet 3 View Output Tests Returns to Diagnostics Menu Language Page Returns to Diagnostics Menu Language Page
3. to upper limit position Current table position indicated in range 0 to 255 This is a diagnostic number only related to but not a directly measurable item STOP Halts test Drive Table Down Indication Purpose Drives RS table to lower limit position Select ENTER to stop in intermediate position Current table position indicated in range 0 to 255 This is a diagnostic number only related to but not a directly measurable item STOP Halts test Toggle Clamps iaon Purpose Toggle the table clamps on off Momentarily pressing the switch alternates the current state When clamps are on attempts to move the table using the table positioners are rendered ineffective Toggle Table Vacuum iaon o Pupone O O OE GO Toggle the table vacuum on off Momentarily pressing the GO switch alternates the current state Carriage Speed This diagnostic function enables the operator to carry out an automatic calibra Calibration tion of the print carriage speed Full details for this operation are highlighted in the 248 Technical Reference Manual Calibrations and Settings chapter To access the Carriage Speed Calibration menu carry out the following 1 Press the Scroll Menu up down arrow function buttons to scroll through the menu pages until Carriage Speed Calibration is displayed Pressing the GO button starts the test Calibrating is displayed in the menu page during the c
4. 1 May 02 User Manual 4 7 DIAGNOSTICS PRINTER DIAGNOSTICS MENU DERK 248 From Sheet 4 Display Units Page Menu Protection Page View Digital Inputs Page View Output Tests Page Press GO to start test GO lt Returns to Diagnostics Menu Language Page Page display during calibration Note Returning the key switch to positions Halts Calibration 1 or 2 returns the screen to Step mode Figure 4 5 Diagnostic Flow Chart Sheet 5 4 8 User Manual Chapter Issue 1 May 02 DIAGNOSTICS DEK P 4 8 DIAGNOSTIC FUNCTIONS DIAGNOSTIC FUNCTIONS Display Languages Display Units Menu Protection Yes No Chapter Issue 1 May 02 The following section provides the user with information on each available diagnostic function and details any relevant control panel action NOTE As an aid to the information below refer to the Diagnostics Flow Charts Sheets 1 to 5 The 248 Printer control panel can be adjusted to display one of three languages English default Francais Deutsch When the Diagnostics Mode is selected the first function available is the Display Language menu 1 Press the Change Language function button once to open the French menu display 2 Press the Change Language function butt
5. DIAGNOSTICS DEK 248 INTRODUCTION CHAPTER 4 DIAGNOSTICS INTRODUCTION Chapter Issue 1 May 02 The diagnostic function is an aid to the user to allow access and control of motors and modules It allows the user to control the sequence of the machine so that a particular module can be exercised Specific operations are selected using the control panel function keys NOTE Refer to the Printer Diagnostics Menu section of this chapter for a navigational guide of diagnostics menus including a step by step flow chart The following list briefly details the available functions when using the diagnos tics mode Diagnostic Function Description The control panel can be selected to display one of the following languages Display Languages English default setting Francais French Deutsch German The control panel can be selected to display one of the following units of measurement Display Units aad Metric default setting Imperial Menu Protection The user can select whether to protect menus from inadvertent alteration View Digital Inputs The user can inspect the present state of a sensor input to check whether it is in an On or Off signal condition View Output Tests As an aid to fault diagnosis machine mechanisms may be selected for independent operation Carriage Speed Calibration Automatically calibrates the print carriage speed User Manual 4 1 DIAGNOSTICS PRINTER DIAGNOSTICS MENU DERK 248
6. Returns to Diagnostics Menu Language Page To Sheet 3 Digital Inputs 10 Figure 4 2 Diagnostic Flow Chart Sheet 2 Chapter Issue 1 May 02 User Manual 4 5 DIAGNOSTICS PRINTER DIAGNOSTICS MENU DERK 248 From Sheet 2 Digital Inputs 9 Returns to Diagnostics Menu Language Page Continues Scrolling Digital Inputs Display Units Page ee SY Ss Menu Protection Page View Digital Inputs Page To Sheet 4 1 Cycle Squeegees Figure 4 3 Diagnostic Flow Chart Sheet 3 4 6 User Manual Chapter Issue 1 May 02 DIAGNOSTICS DEK 248 PRINTER DIAGNOSTICS MENU NOTE Top Line of scrolled list is active Chevron indicates active line Halts test in progress Returns to Diagnostics Menu From Sheet 3 Press GO to start test GO lt Stops test and scrolls to next line Press GO to start test GO lt Language Page Halts test in progress Stops test ana seo a Press GO to start test a te HEX Une Ep bane For 7 amp 8 GO toggles between ON and OFF GO lt Halts test in progress Continues Scrolling Output Tests To Sheet 5 Figure 4 4 Diagnostic Flow Chart Sheet 4 Chapter Issue
7. ack to the start Display Language menu page The following tables details each input describing the purpose for each state indication Purpose Indicates 24V system power is applied indication POOR ON Indicates that air pressure at the pressure switch is sufficient to activate the pressure switch approx 3 5 bar User Manual Chapter Issue 1 May 02 DIAGNOSTICS DEK P 4 8 DIAGNOSTIC FUNCTIONS Keyswitch Position Cover Switch Left GO Button Right GO Button Front Squeegee Down Rear Squeegee Down Table In Sensor Table Out Sensor Table Up Limit Sensor Chapter Issue 1 May 02 I oooO oooO Indicates the key is in the 12 o clock position position 2 or the 3 o clock position position 3 Indicates key is in position 1 9 o clock Indication Purpose Indicates that the cover switch is not activated or the machine cover is open Indicates that the cover switch is activated i e that the cover is closed ramon pon ON Indicates that the left front panel or the left remote start GO switch is activated Press to test raon pon ON Indicates that the right front panel or the right remote start GO switch is activated Press to test ran e ON Indicates that the front squeegee down reed switch is activated The front squeegee is down m oooO UUU OUSUS Indicates that the rear squeegee down reed switch is activated The rear squeegee is down m eS ON indicates t
8. alibration period To halt the calibration press the Stop function button 4 Pressing the Exit function button returns the Diagnostic Menu page back to the start Carriage Speed Calibration menu page 4 14 User Manual Chapter Issue 1 May 02
9. h replacement or repair As a safeguard the control system automatically prevents selection of move ments that could damage the mechanisms For example the table cannot be selected to be raised whilst in the table out position This prevents subsequent collision with the printhead structure should the next selected action be table in Output tests are viewed by selecting the View Outputs function button The first three rows of output tests are displayed pressing the down arrow button scrolls through each output test NOTE The active test line is always on the top row and denoted by a chevron example below refers C Feces aH n Be T Bee F ip Hag Bee Ee a HH User Manual Chapter Issue 1 May 02 DER 248 The following Output Tests are available for viewing and testing Cycle Squeegees Drive Carriage Forward Drive Carriage Reverse Chapter Issue 1 May 02 DIAGNOSTICS DIAGNOSTIC FUNCTIONS 1 Cycle Squeegees Drive Carriage Forward Drive Carriage Reverse Cycle Table In Out Drive table Up Drive Table Down Toggle Table Clamps CO N O A A W PD Toggle Table Vacuum To access the View Outputs Tests menu carry out the following 1 Press the Scroll Menu up down arrow function buttons to scroll through the menu pages until View Output Tests is displayed Pressing the View Outputs function button displays the first three rows of test outputs The top line of t
10. hat the inboard switch on the X Y table pneumatic drive assembly is activated the X Y table has reached the table in position eee ae ON indicates that the outboard switch on the X Y table pneumatic drive assem bly is activated the X Y table has reached the table out position m a ON indicates that the X Y table lift upper switch is activated The table is not fully up but the table is at least as high as the limit switch position OFF indicates that the table is not at the upper limit User Manual 4 11 DIAGNOSTICS DIAGNOSTIC FUNCTIONS DERK P 4 8 Table Down Limit Sensor Vision Alignment Option Vision Aligned View Output Tests 4 12 Piedieaton Papo ON ON indicates that the detector for the X Y table lowest position is activated the table is fully down OFF indicates that the table is not fully down Indication Purpose Vision system fitted Vision system not fitted amon Pose Vision system aligned green overlay Vision system not aligned Exercises are known as Output Tests Mechanisms of the machine may be selected for independent exercising or the present status of the analogue sensors fitted to the machine may be inspected The ability to perform such tests may be used as an aid to fault diagnosis For example the squeegee blade mechanism may be raised or lowered independent of the print cycle to prove the efficiency of the switch setting following switc
11. he list is the active line and is denoted by a chevron see example on previous page Pressing the down arrow button scrolls through the 8 outputs When the required output line required for test is displayed on the top line with a chevron indicator press the GO button buttons The test is carried out Pressing the Stop function button stops the test in progress Pressing the Exit function button reverts the Diagnostic Menu page back to the start Display Language menu page The following tables lists each output test describing the machine action during test cycle Control Purpose Selection GO Squeegees cycle continuously STOP Halts test Control Purpose L SRECOM Print carriage drives from rear to front of machine Print carriage drives from rear to front of machine Current position shown position shown in range 0 225 STOP Halts test Control Purpose L SRPCHOM Print carriage drives from front to rear of machine Print carriage drives from front to rear of machine Current position shown position shown in range 0 225 STOP Halts test User Manual 4 13 DIAGNOSTICS DIAGNOSTIC FUNCTIONS DERK P 4 8 Cycle Table In Out Control Purpose Selection nnn Reciprocating sliding table cycles continuously from table in to table out position STOP Halts test Drive Table Up Control Purpose Selection Drives RS table also known as the X Y table assembly
12. on again if the German menu display is required 3 Press either Scroll Menu up down arrow function button to set all machine pages to the selected language display The next Diagnostic Menu page is also displayed The 248 Printer control panel can be adjusted to display one of two measure ment types From the diagnostics menu Display Units either metric or imperial units of measurement may be selected Metric default e Imperial The user can select whether to protect menus from inadvertent alteration by selecting either Yes or No Selecting YES prevents menu changes to all parameter values of any menu At the control panel entry to Edit Menu Parameters page is no longer possible NOTE If the optional DEKLink is used the menu edit facility transmit command is disabled Any parameters changed cannot be passed to the printer Selecting NO allows normal function of the edit menu parameters page at the control panel or transmission of edit changes made at the DEKLink menu edit facility NOTE If the optional DEKLink is used the menu edit facility transmit command is enabled allowing parameter values to be changed The printer default is set to no protection to enable the menu protection setting carry out the following User Manual 49 DIAGNOSTICS DIAGNOSTIC FUNCTIONS DERK P 4 8 View Digital Inputs System Power Status Pneumatic Pressure 4 10 Press the Sc
13. roll Menu up down arrow function buttons to scroll through the menu pages until Menu Protection is displayed Press the Change Protection function button once to change the display to YES Press either Scroll Menu up down arrow function button to set the machine to the selected protection display The next previous Diagnostic Menu page is also displayed sensors that can have two possible states return the current state of the sensor at the display Therefore the present state of a sensor input may be inspected to check whether it is in an on or off signal condition The following list of digital inputs is available for viewing s System Power Status Pneumatic Pressure Keyswitch Position Cover Switch Left GO Button Right GO Button Front Squeegee Down Rear Squeegee Down oO Oo N O oo A W N Table In Sensor Table Out Sensor a i O Table Up Limit Sensor NO Vision Alignment Option oO Vision Aligned 1 System Power Status To access the digital inputs menu carry out the following 1 Press the Scroll Menu up down arrow function buttons to scroll through the menu pages until View Digital Inputs is displayed Pressing the View Inputs function button displays the first three rows of inputs pressing the down arrow button scrolls through the 14 inputs Pressing the Exit function button reverts the Diagnostic Menu page b
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