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DataMetrics Corporation 
1717 Diplomacy Row 
Orlando, Fl 32809 

This manual is intended to function as an example ONLY and does not represent all configurations and options for this product.

 

 

 

 

 

 

 
 

 
 

4080B THERMAL PRINTER

 

 
 

OPERATION AND 

MAINTENANCE INSTRUCTIONS 

 

 

 

 

 

 

Summary of Contents for 4080B

Page 1: ...n 1717 Diplomacy Row Orlando Fl 32809 This manual is intended to function as an example ONLY and does not represent all configurations and options for this product 4080B THERMAL PRINTER OPERATION AND MAINTENANCE INSTRUCTIONS ...

Page 2: ... FOR PREPARING THE SAME OR SIMILAR COMPUTER SOFTWARE OR C USED BY A PARTY OTHER THAN THE GOVERNMENT EXCEPT FOR 1 EMERGENCY REPAIR OR OVERHAUL WORK ONLY BY OR FOR THE GOVERNMENT WHERE THE ITEM OR PROCESS CONCERNED IS NOT OTHERWISE REASONABLY AVAILABLE TO ENABLE TIMELY PERFORMANCE OF THE WORK PROVIDED THAT THE RELEASE OR DISCLOSURE HEREOF OUTSIDE THE GOVERNMENT SHALL BE MADE SUBJECT TO A PROHIBITION...

Page 3: ...OPERATION AND MAINTENANCE DataMetrics Corporation i RECORD OF CHANGES Date Revision Description of Change 040325 INITIAL RELEASE ...

Page 4: ...g Data 10 3 GENERAL THEORY OF OPERATION 12 3 1 Introduction 12 3 2 Overall Functional Description 12 3 3 Printer Functional Sections 13 3 3 1 Power Supply Section 13 3 3 2 Control Section 13 3 3 3 Print Section 13 4 OPERATING INSTRUCTIONS 14 4 1 Introduction 14 4 2 Operational Switch Lights Indicators and Switches 14 4 2 1 Operator Controlled Switch Lights 14 4 2 2 Indicators 14 4 2 3 Nonoperator ...

Page 5: ...ad Cable Assembly W4 Replacement 50 6 6 1 Printhead Cable Assembly Removal 50 6 6 2 Printhead Cable Assembly Installation 50 6 7 Motor Assembly B1 Replacement 51 6 7 1 Motor Assembly Removal 51 6 7 2 Motor Assembly Installation 51 6 8 Control Panel Assembly Replacement 53 6 8 1 Control Panel Assembly Removal 53 6 8 2 Control Panel Assembly Installation 53 6 9 Controller Circuit Card Assembly CCA R...

Page 6: ...OPERATION AND MAINTENANCE DataMetrics Corporation iv ...

Page 7: ...able Assembly Replacement 66 6 16 1 Battery Cable Assembly Removal 66 6 16 2 Battery Cable Assembly Installation 66 6 17 FPDU Assembly Replacement 66 6 17 1 FPDU Assembly Removal 66 6 17 2 FPDU Assembly Installation 67 6 18 Performance Verification 67 7 PROGRAMMING INTERFACE REQUIREMENTS 68 7 1 Introduction 68 7 2 Programming Requirements 68 7 2 1 Host Provided Printer Control Codes 68 7 2 2 Print...

Page 8: ...4 5 1 Printer Cleaning 30 6 1 Fault Isolation 36 6 2 RS 232 Data Cabling 44 6 3 Circuit Breaker Cable Assembly Replacement 45 6 4 Field Power Distribution Unit FPDU 46 6 5 Printhead and Cable Assembly Replacement 49 6 6 Motor Assembly Replacement 52 6 7 Control Panel Assembly Replacement 54 6 8 Controller CCA Replacement 56 6 9 Data Cable Assembly Replacement 59 6 10 DC Power Cable Assembly Replac...

Page 9: ...ceptacle J1 Pin Assignments 8 2 2 Data Input Receptacle J2 Pin Assignments 9 2 3 Baud Rate Switch Selection 9 2 4 ASCII 64 Symbol Printing Subset 11 4 1 Control and Indicator Functions 16 4 2 8 Bit Status Byte Format 25 4 3 LED Fault Indicators 26 5 1 Preventive Maintenance Materials 28 5 2 First Level Test Equipment 31 6 1 Corrective Maintenance Equipment and Materials 35 6 2 Fault Isolation 37 7...

Page 10: ...roper written authorization b Electronic or delicate mechanical assemblies must not be dropped or subjected to abnormal abuse dropped units must be retested c Cable assemblies must not be pulled twisted or subjected to undue physical stress d Work areas and materials must be kept clean and orderly e Protective equipment for components and materials must remain installed until it is necessary to re...

Page 11: ...effectiveness of the equipment is not impaired ELECTRONICS SAFETY Safety regulations must be observed at all times when electronic equipment is serviced Rings and watches must be removed to avoid accidental shock during servicing of electronic equipment Power must be turned off when equipment is adjusted Electronic equipment must be deactivated before ser vicing Dangerous potentials may exist in c...

Page 12: ...inter is capable of 80 column font side writing The modular construction allows easy access for repairs and replacement of parts and assemblies Accessible on the front of the printer are the door assembly control panel door latches and a circuit breaker see Figure 1 1 1 2 1 Door Assembly The door assembly consists of the film paper spool drive roller idler roller gear and paper guide The motor is ...

Page 13: ...OPERATION AND MAINTENANCE DataMetrics Corporation 2 Figure 1 1 DmC 4080B Printer ...

Page 14: ...232 C 150 to 19 200 baud rate Printer size and weight Height Width Depth Weight 5 0 inches 7 0 inches 7 0 inches 8 5 inches with TEMPEST optional 9 pounds maximum without paper 12 pounds maximum with TEMPEST optional without paper Handle Optional Power requirements 23 Vdc 10 to 50 watts 24 Vdc battery 10 to 50 watts optional EMI EMC protection Yes TEMPEST option NACSIM 5100A Mean Time Between Fail...

Page 15: ...DmC 19059 1 Carrying case SBC Case 1 Roll thermal paper DmC 19059 Table 1 3 Equipment Required But Not Supplied Quantity Description Part Number Use As required Roll thermal paper Hard copy printout As required Lint free cotton cloth General and roller cleaning As required Cotton swabs Printhead cleaning As required Isopropyl alcohol Printhead general and roller cleaning ...

Page 16: ...ut of cardboard carton e Remove plastic from printer f Save cardboard carton and packaging materials NOTE When packing the printer must be cushioned on all six sides by foam or the equivalent Bubble pack may be used instead of the plastic wrapping 2 3 INSPECTION Visually inspect the equipment supplied to ensure that all assemblies have arrived reference Chapter 1 Table 1 2 and are free of damage i...

Page 17: ...OPERATION AND MAINTENANCE DataMetrics Corporation 6 Figure 2 1 Printer Packaging ...

Page 18: ...OPERATION AND MAINTENANCE DataMetrics Corporation 7 Figure 2 2 Printer Inspection ...

Page 19: ...emove the printer from any mount if so installed in order to replace printer make repairs to the unit and or for shipping NOTE Power grounding strap and data connections at the J1 El and J2 locations are disconnected from rear of printer Step 1 Disconnect input power cable from input power receptacle J1 and data cable from data receptacle J2 Step 2 Disconnect grounding strap El Step 3 Remove mount...

Page 20: ...lection SW1 SW2 SW3 SW4 Mode Closed Closed Closed Closed Serial 150 baud Open Closed Closed Closed Serial 300 baud Closed Open Closed Closed Serial 600 baud Open Open Closed Closed Serial 1200 baud Closed Closed Open Closed Serial 2400 baud Open Closed Open Closed Serial 4800 baud Closed Open Open Closed Serial 9600 baud Open Open Open Closed Serial 19 200 baud NOTE Printer data transmittal is pre...

Page 21: ...able 2 1 The data cable is installed on the rear of the printer into data receptacle J2 The maximum data cable length allowed is 50 feet Pin assignments for data 1 receptacle J2 and signal names for each interface are listed in Table 2 2 After the two cables power and data have been installed the printer is ready for operating instructions Chapter 4 Data are transmitted through the data cable betw...

Page 22: ...4 b3 b2 b1 Nonprinting Printing 0 0 0 0 DLE SP 0 P P 0 0 0 0 1 DC1 1 A Q A Q 1 0 0 1 0 DC2 2 B R B R 2 0 0 1 1 DC3 3 C S C S 3 0 1 0 0 DC4 4 D T D T 4 0 1 0 1 ENQ NAK 5 E U E U 5 0 1 1 0 ACK 6 F V F V 6 0 1 1 1 apos 7 G W G W 7 1 0 0 0 8 H X H X 8 1 0 0 1 9 I Y I Y 9 1 0 1 0 LF J Z J Z 10 1 0 1 1 K K 11 1 1 0 0 FF L L 12 1 1 0 1 CR GS M M 13 1 1 1 0 SO N N 14 1 1 1 1 SI O _ O _ 15 ...

Page 23: ...chapter 3 2 OVERALL FUNCTIONAL DESCRIPTION The function of the printer is to convert received information from a host computer into printable data and provide a half page hard copy output of that data Printable data can be either alphanumeric or as an option graphics data In the alphanumeric mode data are interpreted as text characters in a 40 column font with an 80 column font as an option The ov...

Page 24: ...ection 2 This section receives and transmits data in an ASCII format serial asynchronous RS 232 C type interface In the serial interface mode data transfer baud rates of 150 300 600 1200 2400 4800 9600 or 19 2K are selected Chapter 2 paragraph 2 5 and Table 2 3 on the control CCA prior to applying printer power 3 3 3 Print Section 3 This section contains the printhead with its internal circuitry T...

Page 25: ... BTY indicator illuminates to indicate that the battery is low 4 2 3 Nonoperator Controlled Switch One nonoperator controlled switch is contained in the printer Figure 4 1 The nonoperator controlled function of circuit breaker CB1 switch is to automatically deactivate input voltage to protect against power overloads The switch is manually set to ON position to apply power to the printer Refer to T...

Page 26: ...OPERATION AND MAINTENANCE DataMetrics Corporation 15 Figure 4 1 Controls and Indicators ...

Page 27: ...Performs a switch indicator lamp test by illuminating each lamp twice Initiates built in test BIT which validates the printer internal operation and prints a 40 column self test pattern LOW BTY indicator Amber indicator lamp Illuminates when the battery senses a low battery condition LINE FEED LF switch Advances printer paper until switch is released Paper sensor Senses paper out condition then fl...

Page 28: ...OPERATION AND MAINTENANCE DataMetrics Corporation 17 Figure 4 2 Paper Loading Side View Door Open ...

Page 29: ...OPERATION AND MAINTENANCE DataMetrics Corporation 18 Figure 4 3 Paper Unloading ...

Page 30: ...in Chapter 2 Table 2 2 The ground strap is installed on the rear of the printer to ground lug El 1 After the two cables and ground one power one data and one ground strap have been installed the printer is ready for operating procedures paragraph 4 4 Data are transmitted through the data cable between the printer and host at a baud rate selected from Chapter 2 Table 2 3 4 3 4 Field Power Distribut...

Page 31: ...h 6 18 4 4 1 Power Turn On After power data and ground strap connections are made to the printer paragraph 4 3 3 turn printer power on in accordance with the following steps Step 1 Steps b and c will not be required if power has previously been turn on Step 2 Set circuit breaker CB1 Figure 4 1 to ON position Step 3 Observe that POWER indicator Figure 4 1 illuminates and printer performs built in t...

Page 32: ...ady to accept input data from the host or receive control panel input Step 5 POWER indicator will illuminate green when CB1 is set to ON 4 4 3 Self Tests Three types of printer self tests are provided The first type is the power on BIT the second type is the operator invoked self test diagnostic and the third type is the host requested background diagnostics a Power on BIT Each time printer POWER ...

Page 33: ...lf test diagnostics also can be initiated by the host sending a DC2 control code to the printer 1 Printer sends off line signal to host and extinguishes ON LINE indicator 2 Performs a lamp test of each indicator and switch light twice in a clockwise direction from POWER ending with POWER indicator illuminated 3 Advances paper several lines 4 Performs power on BIT 5 Prints a shifting pattern of hos...

Page 34: ...OPERATION AND MAINTENANCE DataMetrics Corporation 23 Figure 4 6 40 Column Self Test Printout ...

Page 35: ...OPERATION AND MAINTENANCE DataMetrics Corporation 24 Figure 4 7 80 Column Test Printout ...

Page 36: ...4 3 4 4 4 Normal Operation For normal operation of the printer perform the following procedure a Check printer paper supply and replenish as needed in accordance with paragraph 4 3 1 b Connect power and data cables in accordance with paragraph 4 3 3 c Apply power to printer and allow power on BIT paragraph 4 4 3 a completion d Perform operator invoked self test diagnostics paragraph 4 4 3 b e When...

Page 37: ... Table 4 3 LED Fault Indicators FAULT LED Blinks Fault Once with a pause Indeterminate 1 of X SRUs Twice with a pause Control CCA Three times with a pause Power Supply CCA Four times with a pause Printhead ON steady not blinking Out of paper or door open ...

Page 38: ... not scheduled but should be carried out prior to operating the printer a Printer Carrying Case Inspect the straps and clips of the carrying case for rips or tears that will prevent that carrying case from safely transporting the printer and it s associated ancillaries If the printer carrying case proves to be unserviceable replace it with a serviceable assembly b Printer 1 Inspect the printer ass...

Page 39: ...2 2 First Level Inspection The following inspection tasks are to be performed annually a Printer Inspection 1 Make sure that power is removed from the printer Remove the printer from it s carrying case 2 Inspect that the door assembly 3 Inspect the captive screws on the door assembly for damage 4 Inspect the battery door and securing screws and springs Replace hardware and or door as applicable 5 ...

Page 40: ...es not require lubrication Step 1 Make sure that the circuit breaker toggle switch is in the OFF position Step 2 Open the printer door 1 Figure 5 1 and remove any installed paper Chapter 4 para graph 4 3 2 To prevent printhead damage avoid striking printhead during cleaning procedure Step 3 Wipe all debris from printer interior rollers and exterior using lint free cleaning cloth Isopropyl alcohol ...

Page 41: ...riking printhead during cleaning procedure 5 2 4 Printhead Cleaning Step 1 Open the printer door l Figure 5 1 and remove paper supply Chapter 4 paragraph 4 3 2 Isopropyl alcohol is a toxic and flammable liquid Keep isopropyl alcohol and cleaning cloths wet with isopropyl alcohol away from ignition sources and use only in a well ventilated area Step 2 Using cotton swabs dampened with isopropyl alco...

Page 42: ...res listed below Step 1 Toggle the circuit breaker switch to the ON position Verify that power up that the power LED illuminates and all other LEDs illuminate momentarily Paper also must advance approximately 1 inch from the paper slot After initial power up make sure that only the power LED and on line LED remain illuminated Step 2 Press the LF switch on the control panel Verify paper advances fr...

Page 43: ... Step 10 Toggle the power switch on the FPDU to the OFF position Step 11 Remove the 24 Vdc cable from J1 on the rear of the printer assembly Step 12 Make sure a serviceable battery is properly installed in the printer Step 13 Toggle the circuit breaker on the printer to the ON position Verify that upon powering up that the power LED illuminates that all other LEDs illuminate momentarily and that p...

Page 44: ...xtinguishes Step 8 Initiate a BIT test from the host computer by sending the control code DC2 through the serial communication data line and verify the following 1 A not ready signal is sent from the printer to the host computer 2 All LEDs on the printer momentarily illuminate 3 The printer prints rotating ASCII Refer to Chapter 4 Figure 4 6 4 Paper advances 5 ACK code is sent from the printer to ...

Page 45: ...efer to Figure 6 2 Enter Fault Isolation Table 6 2 with failure symptom from control panel indication s and or self test results Search column 1 for failure description which matches failure symptom Perform procedures in sequence listed in column 2 Test printer after each component change in accordance with second line maintenance testing Chapter 5 paragraph 5 3 4 6 2 1 Second Level Fault Isolatio...

Page 46: ...iver Phillips head no 1 no 2 no 3 two no 1 s required Screwdriver flat head 1 4 in blade 8 inch long shaft Screwdriver set Screwdriver set jeweler s Allen wrench set Calipers 0 5 in 0 001 in increments Needle nose pliers 4 in Tweezers 6 in Flashlight Removal replacement and adjustment functions 3 Flexible numbered wire markers Commercial Wire identification 4 Tie wrap MS3367 5 9 or equivalent Secu...

Page 47: ...OPERATION AND MAINTENANCE DataMetrics Corporation 36 Figure 6 1 Fault Isolation ...

Page 48: ... damaged pins Replace the Controller CCA if necessary 5 Inspect P2 on the controller cable assembly for physical damage such as damaged pins Replace if necessary 6 Make sure that the connection between J3 on the Controller CCA and control panel cable assembly is secure If the problem cannot be resolved replace the control panel refer to paragraph 6 8 Unable to transmit receive information to from ...

Page 49: ... the control panel If the BIT indicates a failure replace the Controller CCA or Power Supply CCA as identified by the flashing LED pattern refer to Chapter 4 Table 4 3 2 Remove the printer top cover 3 Remove the motor cable assembly from J6 on the Controller CCA Figure 6 1 4 Perform a continuity check on the motor s windings using a digital multimeter If step 4 results in a failure replace the mot...

Page 50: ...not been resolved replace the motor assembly refer to paragraph 6 7 Self test printout continu ously missing one or more diagonal characters or lines 1 Initiate BIT from the control panel If BIT results in a Controller CCA assembly failure replace the Controller CCA refer to paragraph 6 9 If BIT results in a printhead assembly failure perform the following a Remove the printhead cable assembly fro...

Page 51: ...om pletely open the printer door 2 Make sure the paper is clean dry and properly installed Reinstall or replace the paper as applicable 3 Initiate BIT from the control panel If the BIT indicates a failure replace the Controller CCA refer to paragraph 6 9 or Power Supply CCA refer to paragraph 6 10 as identified by the flashing LED pattern refer to Chapter 4 Table 4 3 Printer operates properly but ...

Page 52: ...he circuit breaker OFF verify an open circuit between pins P1 1 and P1 2 and between P1 3 and P1 4 on the circuit breaker cable assembly 6 With the circuit breaker ON verify an open circuit between pins P1 3 and P1 4 and between pins P1 1 and P1 2 on the circuit breaker cable assembly If step 5 or 6 result in an error replace the circuit breaker cable assembly refer to paragraph 6 15 7 Remove the ...

Page 53: ...1 and P1 2 and between P1 3 and P1 4 on the circuit breaker cable assembly 6 With the circuit breaker ON verify an open circuit between pins P1 3 and P1 4 and between pins P1 1 and P1 2 on the circuit breaker cable assembly If step 5 or 6 result in an error replace the circuit breaker cable assembly refer to paragraph 6 15 7 Reconnect the circuit breaker cable assembly to J4 on the Power Supply CC...

Page 54: ...is properly installed Reinstall or replace the paper as applicable 3 Initiate BIT from the control panel If BIT indicates a failure replace the Controller CCA or Power Supply CCA as indicated by the flashing LED pattern refer to Chapter 4 Table 4 3 If BIT results in a printhead assembly failure perform the following a Remove the printhead cable assembly from the Controller CCA refer to paragraph 6...

Page 55: ...OPERATION AND MAINTENANCE DataMetrics Corporation 44 Figure 6 2 RS 232 Data Cabling ...

Page 56: ...OPERATION AND MAINTENANCE DataMetrics Corporation 45 Figure 6 3 Circuit Breaker Cable Assembly Replacement ...

Page 57: ... verify power source is disconnected before starting any removal or assembly procedure Do not begin procedure for 1 minute after power is removed 6 3 1 Operator Remove and Replace Procedures The operator remove and replacement consists of removing and replacing either the carrying case or printer with a serviceable assembly ...

Page 58: ...he rear of the printer 6 3 1 2 Printer Replacement Perform the following steps to replace the printer with a serviceable assembly Step 1 Replace the defective printer assembly with a serviceable assembly Step 2 Remove the protective metal caps and attach the appropriate cables to J1 and J2 Step 3 Slide the printer into the carrying case so the front door faces outward Make sure the power and data ...

Page 59: ...lation procedures by following the appropriate procedures outlined in paragraph 6 6 through to and including 6 18 6 5 PRINTHEAD ASSEMBLY A3 REPLACEMENT To avoid printhead damage do not strike printhead surface during removal 6 5 1 Printhead Assembly Removal Remove the printhead assembly refer to Figure 6 5 in accordance with the following steps Step 1 Open the printer door 2 loosen the two captive...

Page 60: ...OPERATION AND MAINTENANCE DataMetrics Corporation 49 Figure 6 5 Printhead and Cable Assembly Replacement ...

Page 61: ...the two captive screws 1 that secure the printer door Completely open the printer door Step 2 Remove the ten screws 7 that secure the top cover Remove the top cover from the printer assembly Step 3 Disconnect the printhead cable P2 from the Controller CCA by pulling upwards on the controller and power supply assemblies until the connector is released Step 4 With the controller and power supply CCA...

Page 62: ...e printer Step 6 Remove the circuit breaker cable through the top cover of the printer housing Step 7 Remove the two screws 5 and flat washers 6 that secure the motor to the bottom of the printer housing assembly Step 8 Remove two nuts 7 flat washers 8 and lock washers 9 that secure the motor bracket 10 to the side of the printer housing Step 9 Remove connector W6 P1 from J6 on the Controller CCA ...

Page 63: ...OPERATION AND MAINTENANCE DataMetrics Corporation 52 Figure 6 6 Motor Assembly Replacement ...

Page 64: ...l Remove the control panel assembly refer to Figure 6 7 in accordance with the following steps Step 1 Partially open the printer door 2 and loosen the two captive screws 1 that secure the printer door Open the printer door Step 2 Remove the ten screws 7 that secure the top cover Remove the top cover from the printer assembly Step 3 Disconnect the control panel cable from the Controller CCA connect...

Page 65: ...OPERATION AND MAINTENANCE DataMetrics Corporation 54 Figure 6 7 Control Panel Assembly Replacement ...

Page 66: ...r CCA 2 Data cable assembly from J2 on the Controller CCA 3 Motor cable assembly from J6 on the Controller CCA Step 4 Disconnect the following cables from the corresponding connectors on the power supply CCA refer to Figure 6 3 1 Battery cable assembly from J3 on the power supply CCA 2 DC power cable assembly from J1 on the power supply CCA 3 Circuit breaker cable assembly from J4 on the power sup...

Page 67: ...OPERATION AND MAINTENANCE DataMetrics Corporation 56 Figure 6 8 Controller CCA Replacement ...

Page 68: ...r to Figure 6 3 in accordance with the following steps Step 1 Open the printer door 2 loosen the two captive screws 1 that secure the printer door Completely open the printer door refer to Figure 6 5 Step 2 Remove the ten screws 7 that secure the top cover Remove the top cover from the printer assembly Figure 6 8 Step 3 Disconnect the following cables from the corresponding connectors on the Contr...

Page 69: ...to J1 on the Power Supply CCA 3 Circuit breaker cable assembly to J4 on the Power Supply CCA Step 5 Install the printer cover using ten screws 7 and tighten the screws refer to Figure 6 5 Step 6 Load printer with paper Chapter 4 paragraph 4 3 1 Step 7 Close printer door and tighten the two captive screws 1 Step 8 Perform second line maintenance testing as described in Chapter 5 paragraph 5 3 4 To ...

Page 70: ...OPERATION AND MAINTENANCE DataMetrics Corporation 59 Figure 6 9 Data Cable Assembly Replacement ...

Page 71: ...tighten the two captive screws 1 Step 8 Perform second line maintenance testing as described in Chapter 5 paragraph 5 3 4 6 12 DC POWER CABLE ASSEMBLY REPLACEMENT 6 12 1 DC Power Cable Assembly Removal Remove the dc power cable assembly refer to Figure 6 10 in accordance with the following steps Step 1 Remove the 24 Vdc cable assembly or protective metal cap from J1 on the printer by rotating the ...

Page 72: ...OPERATION AND MAINTENANCE DataMetrics Corporation 61 Figure 6 10 DC Power Cable Assembly Replacement ...

Page 73: ... REPLACEMENT 6 13 1 24 Vdc Cable Assembly Removal Remove the 24 Vdc cable assembly refer to Figure 6 11 in accordance with the following steps Step 1 Remove the 24 Vdc cable assembly from J1 on the rear of the printer assembly by rotating the connector counter clockwise until loose and pull out of J1 Step 2 Rotate the connector attached to P2 on the FPDU clockwise until it is loose Pull connector ...

Page 74: ...OPERATION AND MAINTENANCE DataMetrics Corporation 63 Figure 6 11 24 Vdc Cable Assembly Replacement ...

Page 75: ...longer than 30 days If battery becomes hot to touch turn printer OFF immediately Remove battery when their temperature has dropped 6 14 1 NiCad Battery Assembly Removal Remove the battery refer to Figure 6 12 in accordance with the following steps Step 1 Remove the printer cover by removing the ten screws 3 that secure it in place Step 2 Loosen the two screws that secure the battery door to the pr...

Page 76: ...cover Remove the top cover from the printer assembly refer to Figure 6 3 Step 3 Disconnect the circuit breaker cable connector P1 from the power supply J4 by pressing the locking latch and extracting the connector from the power supply socket refer to Figure 6 3 Step 4 Remove lug nut and washer 1 and 2 that secure the circuit breaker switch to the front of the printer refer to Figure 6 6 Step 5 Re...

Page 77: ...le battery cable assembly through the top of the printer 6 16 2 Battery Cable Assembly Installation Install the battery cable assembly in accordance with the following steps Step 1 Connect the battery cable assembly to J3 on the power supply assembly refer to Figure 6 3 Step 2 Install the battery assembly in the printer as described in paragraph 6 14 2 Step 3 Install the printer cover using ten sc...

Page 78: ...roperly The printer performance verification should be performed periodically and always after repairs have been made to the printer Perform printer performance verification in accordance with the following steps Step 1 If required load printer with paper Chapter 4 paragraph 4 3 1 The power source must be off before installing power cable To prevent injury do not touch electrical terminals Step 2 ...

Page 79: ...orm feed code The printer prints current contents of line buffer then advances paper until printed text is positioned above paper tear off bar The next character received is inserted into the first position of the line buffer d Host generated CR 0DH carriage return code The printer prints current contents of line buffer advances to the next character line and inserts the next character into the fi...

Page 80: ...OPERATION AND MAINTENANCE DataMetrics Corporation 69 Figure 7 1 Interconnection Diagram ...

Page 81: ...ost receiver connection load requirement 7 3 1 1 Signal Type Data or control signals unbalanced provide serial data transfer between printer and host Each interface signal is transferred over a single ended one conductor connection to the host Figure 7 2 7 3 1 2 Signal Levels The serial interface signals are produced by a driver and received by a receiver on the control board in the printer The vo...

Page 82: ...OPERATION AND MAINTENANCE DataMetrics Corporation 71 Figure 7 2 RS 232C Interface Diagram Figure 7 3 RS 232C Driver Receiver Interface ...

Page 83: ...ond maximum during 10 to 90 percent of the steady state voltage 7 3 1 6 Host Receiver Load The host receiver load to the printer driver shall be 3K ohms to 7K ohms see paragraph 7 3 1 3 7 3 1 7 RS 232C Transmission Format The RS 232 C interface sends receives ASCII characters in sequence as shown in Figure 7 4 and Table 7 1 Ensure power is off then see Chapter 2 Table 2 3 for baud rate selection s...

Page 84: ...ng steps Step 1 Open the printer door Chapter 2 paragraph 2 3 a Step 2 Remove paper from printer Chapter 4 paragraph 4 3 2 Step 3 Perform general cleaning of the printer Chapter 5 paragraph 5 2 3 Step 4 Remove paper from printer Chapter 4 paragraph 4 3 2 and place in protective wrap for storage in cardboard carton Figure 8 1 Step 5 Close printer door Chapter 2 paragraph 2 3 g Step 6 Place printer ...

Page 85: ...OPERATION AND MAINTENANCE DataMetrics Corporation 74 Figure 8 1 Packaging Printer for Reshipment ...

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