Printronix T3204 Maintenance Manual
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Printronix T3204 Maintenance Manual

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Maintenance Manual
T3204 and T3304 Label Printers

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Summary of Contents for Printronix T3204

  • Page 1 Maintenance Manual T3204 and T3304 Label Printers...
  • Page 3 T3204 and T3304 Label Printers Maintenance Manual P/N 136580-001, Rev C...

  • Page 4: Communication Notices

    Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. Printronix is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes or modifications to this equipment.
  • Page 5 Trademark Acknowledgements Printronix and IGP are registered trademarks of Printronix, Inc. ThermaLine and PGL are trademarks of Printronix, Inc. Centronics is a registered trademark of Genicom Corp. IBM is registered trademark of International Business Machines Corp. 17500 Cartwright Road, P.O. Box 19559 Irvine, California 92623-9559 T elephone (714) 863–1900 F AX (714) 660–8682...
  • Page 6 Thermal Printhead Printronix warrants the printhead for a period of ninety (90) days, or 1,000,000 linear inches (Thermal Transfer/Direct Thermal) of use, whichever comes first. The warranty does not cover printheads that have been misused, damaged due to improper cleaning, or damaged due to use of improper ribbons or media.

  • Page 7: Table Of Contents

    1–4 T3204/T3304 Printer Overview ........
  • Page 8 Platen Adjustment ..........4–4 Media Width Adjustment .
  • Page 9 Power Supply (Switch Regulator Assembly) ......7–8 Lower Timing Belt (203 DPI) ......... . 7–11 Lower Timing Belt (300 DPI) .
  • Page 10 Head Lifter Assembly ..........9–38 Media Hub Assembly (Standard) .

  • Page 11: Introduction And Overview

    1–4 T3204/T3304 Printer Overview ......... .

  • Page 12: Introduction

    Setup and Operator’s Guides corresponding to the specific emulation installed in the printer. NOTE: As used in this manual, the word “printer” refers to both the T3204 and T3304 except as noted below.
  • Page 13 Installation Configuration and Setup Operation and Supplies Loading Specifying the proper media and ribbon Post sales service support questions Call the Printronix ThermaLine Help Desk at (714) 221–2488 or visit the Printronix Web Page at http://www.printronix.com. Introduction and Overview 1–3...

  • Page 14: Warnings And Special Information

    NOTE: A note gives you helpful tips about printer operation and maintenance. T3204/T3304 Printer Overview In general terms, the printer may be divided into four main areas: the Media Path, Printhead, Electronics and Power, and Options. Media Path consists of the transport mechanism which moves print media through the printer, and includes the supply and take-up hubs, motors, drive belts and idler rollers.

  • Page 15: Operational Specifications

    T3204–20 and T3204–21: 10 ips T3304–20 and T3304–21: 8 ips Bar Code Modulus: T3204–20 and T3204–21: 5 mil to 110 mil “X” dimension in picket fence or ladder orientations T3304–20 and T3304–21: 3.3 mil to 110 mil ”X” dimension in picket fence or ladder orientations Max.
  • Page 16 Fonts Resident Fonts: Smooth, scaleable Courier, Letter Gothic and CG Triumvirate Bold Condensed fonts in portrait and landscape orientations (LP+, IGP/PGL and IGP/VGL emulations). Nine alphanumeric fonts in portrait and landscape orientations (IGP/FGL emulation). Optional Fonts: Agfa scaleable, proportional and monospaced available. Font Expansion: All fonts expandable vertically and horizontally.
  • Page 17 Approved Media List For a current list of approved standard media for use in Printronix thermal and thermal transfer printers, please call Printronix at (800) 733–1900 or FAX (714) 476–2135. Further information can be obtained by calling the Printronix ThermaLine Help Desk at (714) 221–2488 or from the Printronix Web Page...
  • Page 18 Label/Tag Media Specifications Direction of Media Motion Figure 1–2. Media Specifications Table 1–2. Media Specifications Dimension Description T3204/T3304 Max(in.) Min(in.) Label width 4.65 0.75 Backing width 4.65 0.75 Gap between 99.99 0.100 labels Label length 0.250 Media thickness 0.010 0.0046 Width of sensor 0.500...
  • Page 19 Indicators and Switches Indicator Lights: POWER, RIBBON/MEDIA, ON LINE/PAUSE Switches: POWER, ON LINE/PAUSE, FEED, CANCEL LCD Display: 2 x 16 characters for error messages, print status, and recalling stored formats Host Interfacing Serial: Electrical: RS–232C or RS–422 Baud Rate: 300, 600, 1200, 2400, 4800, 9600, or 19,200 baud Character Set: ANSI ASCII Word Length:...
  • Page 20 Options Internal Rewind: 5.0 inches (127 mm) maximum O.D. capacity Cutter: Maximum thickness of 0.010 inch (0.254 mm). (Certain types of media are excluded.) Ribbon Saver: Automatically saves ribbon for blank media areas Label Present Sensor: Detects the presence of a label at either the tear off bar or the peel and present station Adjustable Media Allows the use of media rolls with 1.5, 1.75, 2.0...

  • Page 21: Setup And Configuration

    Setup and Configuration Chapter Contents Printer Setup ............2–2 DIP Switch Settings .

  • Page 22: Printer Setup

    Printer Setup The printer is designed for easy setup using a software based menu system. The menu system controls printing parameters such as contrast or print position, communications protocols, the selection of printer options and emulation modes. The menu also provides maintenance functions and tests which are accessible depending upon the setting of an internal switch (see below).

  • Page 23: Connecting Power

    Connecting Power The standard printer is configured for 115 VAC 10%, single-phase, 50/60Hz power source. The printer should be connected to a properly grounded receptacle. The printer is also manufactured for 230 VAC operation. A small sticker next to the AC power connector states the power requirements.

  • Page 24: Host Interfacing

    Power Switch Release Slot Flip over and reinsert Voltage Selection Switch/ Fuse Holder Figure 2–3. Selecting Printer for 230 VAC Operation Host Interfacing The printer is extremely versatile and able to operate with a personal computer in either serial or, optionally, parallel Centronics-compatible communications modes as well as with IBM midrange computer systems using the optional twinax/coax interface adapter.

  • Page 25: Basic Operations

    Basic Operations Chapter Contents Introduction ............3–2 Primary Operator’s Panel .

  • Page 26: Introduction

    Introduction This section describes the basic operations of the printer, including an overview of the Primary and Secondary Operator’s Panels, loading label media, replacing ribbons and the printer self test functions. Printer operations are controlled both by a set of key switches on the Primary Operator’s Panel on the face of the printer, and by a set of key switches on the Secondary Operator’s Panel which is concealed behind a door on the lower left front of the printer (Figure 3–1 and Figure 3–2, respectively).

  • Page 27: Secondary Operator's Panel

    Secondary Operator’s Panel SHIFT ENTER Figure 3–2. Secondary Operator’s Panel The secondary operator’s panel is located behind a door on the lower left front of the printer. Pushing in on the door will both open and close it. This panel consists of six push-button type key switches and also contains a contrast control for the LCD display.

  • Page 28: Media And Ribbons

    Media and Ribbons The following section describes the available print modes, the types of print media that can be used in the printer, how to install media and how to install and remove ribbons. Printing Modes The printer is able to print using either of two methods, direct thermal or thermal transfer.

  • Page 29: Media Loading

    Media Loading The printer supports up to an 8 inch (203 mm) diameter media roll. If media with a width of less than 4 inches is used, refer to page 4–5 before loading media. Follow the instructions outlined below when installing media stock. Open the printer side access cover.
  • Page 30 NOTE: Printers have been built with two types of standard media hubs. From the illustrations below follow the media loading that matches your printer. Metal Hub: 5. Place the 3” media core adapters on the media hub assembly (if using media with 3”...
  • Page 31 Route the media over the guide plate, between the media sensor, and over the platen roller (located beneath the printhead) as shown in Figure 3–5. Rotate the media guide up and slide it to the edge of the media. Close the hinge plate and lower the printhead by the rotating the printhead latch clockwise to the latched position.

  • Page 32: Ribbon Installation And Removal

    Ribbon Installation and Removal To use a ribbon, the printer must first be equipped with the factory installed thermal transfer option. Follow the instructions below when installing the thermal transfer ribbon. Ribbon Installation Open the side access over. Rotate the printhead latch counter-clockwise to unlatch and raise the printhead.
  • Page 33 Figure 3–7. Ribbon Take-up Hub and J-Hook Slide the J-hook back into place as shown in Figure 3–7. While holding the ribbon take-up hub, rotate the J-hook counter-clockwise to latch. Turn the take-up hub until all the ribbon slack is removed. 10.
  • Page 34 3–10 Basic Operations...

  • Page 35: Maintenance And Adjustments

    Maintenance and Adjustments Chapter Contents Introduction ............4–2 Cleaning .

  • Page 36: Introduction

    Introduction The printer requires very little maintenance. Periodically the printhead will require cleaning, and the interior and exterior of the printer should be cleaned as needed to prevent dust and dirt build-up. There is no requirement for lubrication, and no need for any disassembly to perform the cleaning. The mechanical adjustments should be performed only if there are print quality or ribbon wrinkling problems.

  • Page 37: Printhead

    Printhead The thermal printhead can become dirty from normal printer operation and keeping the printhead clean will help insure trouble free operation. If print defects, such as streaks or spots, do appear on print jobs, the printhead may need cleaning. To clean the printhead, refer to Figure 4–1 and perform the following steps.

  • Page 38: Adjustments

    Adjustments The mechanical and electrical adjustments which may be performed on the printer, if needed, are listed below. Platen Adjustment Follow the instruction below to adjust the platen perpendicular to the centerplate (refer to Figure 4–2). Turn off the printer, and open the printer access cover. Unlatch and raise the printhead.

  • Page 39: Media Width Adjustment

    Media Width Adjustment This adjustment allows the use of narrower media (less than 4 inches wide) in the printer. Remove media from the printer paper path, if installed. Adjust the green head level adjust knob until its lowest setting is at the top (position #1).

  • Page 40: Printhead Alignment Adjustment

    Printhead Alignment Adjustment NOTE: Printhead pressure must be released in order to make static adjustments. Verify that the printhead floats evenly. Print a batch of test labels. NOTE: The method used to print test labels will vary depending upon the printer emulation.

  • Page 41: Printhead Lift Adjustment

    Printhead Lift Adjustment Set green head level adjust knob to lowest position. Insert a 0.5 inch wide strip of plastic 0.001 inch thick strip on each end of the platen. Adjust the set screw until each strip releases with equal pull when the printhead latch closed.

  • Page 42: Electrical Adjustments

    Electrical Adjustments The following adjustments should be performed only by qualified personnel. These adjustments should be performed after Printer Controller PCBA or power supply replacement as described on pages 7–7 and 7–8, respectively. Printhead Voltage Adjustment NOTE: You will need a voltmeter to set the printhead voltage. Turn off the printer and remove the AC power cord.

  • Page 43: Media Sensor Voltages

    10. Adjust R1 on the switch regulator assembly (power supply) until the voltmeter reading matches the printhead resistance ranges in Table 4–1. Table 4–1. Printhead Voltage Settings Printhead Resistance Voltage Setting 628 – 700Ω 20.7 Volts 701 – 730Ω 21.2 Volts 21.7 Volts 731 –...
  • Page 44 12. Using the Secondary Operator’s Panel, enable the printer reflective gap sensor. 13. Place the red (+) voltmeter probe on TP10 on the Printer Controller PCBA. 14. Adjust R2 on the Printer Controller PCBA until the voltmeter reads 0.750 VDC (range 0.700–0.800 VDC). 15.

  • Page 45: Options

    Options Chapter Contents Introduction ............5–2 Factory Installed Only .

  • Page 46: Introduction

    Introduction A number of optional features may be added to the printer to extend its capabilities. Instructions for the installation and maintenance of all options (except those which are factory installed only) are included with their respective options. Factory Installed Only Internal Rewind –...

  • Page 47: Troubleshooting

    Troubleshooting Chapter Contents Overview ............. 6–2 Printing Pre-programmed Labels .

  • Page 48: Overview

    Overview This chapter discusses a number of topics related to troubleshooting the printer. It covers the generation and use of the pre-programmed configuration and print quality test labels, the printer power on self test, error messages and their causes, and some techniques for isolating and correcting faults . When faults are isolated to the Printer Controller or Secondary Operator’s Panel PCBAs, it is recommended that the entire PCBA be replaced as it is not generally feasible to provide component level service to these boards in...

  • Page 49: Power On Self-Test

    Power On Self-Test The printer performs a self diagnostic test each time it is powered up. If any faults are detected at that time, an error message will be displayed on the LCD. Should problems arise with printing or print quality, the printer is equipped with a set of internal diagnostic tests which may be used to aid in isolating problem areas.

  • Page 50: Initial Steps

    Initial Steps WARNING ALWAYS unplug the unit before attempting to replace any components. Always be sure that the printer has been placed on a level, stable surface. Before attempting any service, confirm that the printer power cord is plugged into a known good outlet with the correct voltage, and the unit has been installed in an area which is within acceptable environmental conditions (see page 1–9).

  • Page 51: Problem Isolation Checklist

    Problem Isolation Checklist Step Check Item Result Corrective Action Check the printer voltage selection switch for the proper set- Go to Step 2. ting corresponding to the available AC input voltage (see page 2–3). Is the voltage selection switch set properly? Correct the switch setting.

  • Page 52: Troubleshooting Procedures

    Troubleshooting Procedures Troubleshooting Procedure 1. – NO POWER Light When Printer is Turned On Step Check Item Result Corrective Action Is power cord properly attached to the printer and to the AC Go to Step 2. receptacle? Connect AC cord properly.
  • Page 53 Step Check Item Result Corrective Action Locate the AC filter module assembly. Replace the transformer. WARNING: This procedure requires measurement of voltage. Do not cross test leads or allow leads to touch other objects. Back probe the module’s output connections and verify the correct output for the selected printer line voltage.
  • Page 54 Troubleshooting Procedure 2. – RIBBON/MEDIA Light Is On Step Check Item Result Corrective Action Ensure that the media and ribbon are loaded correctly. (see If you are using a ribbon, page 3–4). Press the FEED button. Does the RIBBON/MEDIA remove it at this time. Be sure light come on? that the printer is set for direct thermal operation.
  • Page 55 Step Check Item Result Corrective Action Examine the drive roller while pressing the FEED button. Does Go to Step 10. the roller turn in the correct direction? Replace the Printer Controller PCBA. Examine the drive roller. Does it turn enough to feed the media This problem can be caused outward? by a worn roller or misaligned...
  • Page 56 Troubleshooting Procedure 4. – Ribbon Sensor Faults (Media Sensor Good) Step Check Item Result Corrective Action Ensure that the media and ribbon are loaded correctly (see Go to Step 2. page 3–4). Press the FEED button. Is the Paper/Ribbon LED illuminated? Refer to the Problem Isolation Checklist and continue.
  • Page 57 Troubleshooting Procedure 5. – Poor Print Quality Step Check Item Result Corrective Action Print a configuration label (see page 6–2). Is anything printed Go to Step 2. on the label? Go to Step 4. Does the label show streaks or missing dots? 1) Clean printhead 2) Check media width adjustment (see page 4–5).
  • Page 58 Troubleshooting Procedure 6. – No Serial Communications Step Check Item Result Corrective Action Ensure that the proper serial communications cable is Go to Step 2. connected between the printer and the host. Turn the printer ON and send a label to the printer. Did the label print? Go to Step 3.

  • Page 59: Removal And Replacement

    Removal and Replacement Chapter Contents Overview ............. 7–2 Cover .

  • Page 60: Overview

    Overview Many parts of the printer, such as the printhead and timing belts, may require replacement when performing routine maintenance. Some parts may require replacement because of damage or wear. This section will explain how to remove and replace these parts. It is recommended that the service person have the following tools available before proceeding with the Removal and Replacement procedures.

  • Page 61: Cover

    Cover Removal Turn the printer power switch OFF and unplug the AC power cord from the AC outlet. Raise the side access cover to a full upright position. Figure 7–1 Loosen the three screws securing the top edge of the cover and remove the screw securing the rear of the cover.
  • Page 62 Replacement Proper re-installation of the printer cover is essential to ensure that the printer continues to meet its specified regulatory requirements. To re-install the cover, perform the following steps (numbers in the drawings refer to their associated steps). Place the cover over the unit as shown, aligning the front of the electronic cover with the plastic front panel section (see Figure 7–2).
  • Page 63 Once the media side of the cover is aligned, horizontally align the electronic cover with the plastic front bezel. Tighten screw snugly. Place hand on the top of the electronic cover pressing firmly, and tighten the remaining three outside screws (two on the left side and one at the rear of the printer).

  • Page 64: Printhead

    Printhead Removal Turn off the printer and open the side access cover. Rotate the printhead latch downward to unlatch the printhead, then raise the printhead to an upright position and lower the hinge plate. Loosen the thumb screw and lower the printhead from the printhead mounting plate.

  • Page 65: Printer Controller Pcba (Main Logic Board)

    Printer Controller PCBA (Main Logic Board) Removal Turn off the printer and remove the AC power cord. Remove the printer cover (see page 7–3). Unplug cable connectors P17 and P18 from J17 and J18 on the Printer Controller PCBA. Disconnect all remaining cables from the Printer Controller PCBA. Remove the rear female/male hex standoffs from the serial port connector.

  • Page 66: Power Supply (Switch Regulator Assembly)

    Power Supply (Switch Regulator Assembly) Removal Turn off the printer and remove the AC power cord. Remove the printer cover (see page 7–3). Remove the two (2) 4–40 Phillips head screws located on the centerplate. Depending on the style of the printer’s media hub, the media hub assembly may need to be removed to access these screws.
  • Page 67 Remove the two flat-head screws from the AC filter module. Disconnect the four wires from the rear of the AC filter module and remove the ground wire from the base plate. Remove the AC filter module from the printer. Disconnect connectors P3, P5, P6, P1, and P2 from the switching regulator assembly.
  • Page 68 Replacement Reverse previous steps to install the new switching regulator assembly. Refer to Figure 7–9 below when reconnecting the AC filter module assembly. Re-install printer cover (see page 7–4). After installation of the new switching regulator assembly, the printhead voltage adjustment must be performed (see page 4–8). Figure 7–9 7–10 Removal and Replacement...

  • Page 69: Lower Timing Belt (203 Dpi)

    Lower Timing Belt (203 DPI) Removal Turn off the printer and remove the AC power cord. Remove the printer cover (see page 7–3). Loosen the upper tensioner adjustment screw located on the rear bearing plate. Carefully slide the upper timing belt off the 36 tooth pulley as shown in Figure 7–10.
  • Page 70 Loosen the lower tensioner adjustment screw (see Figure 7–11). Carefully remove the lower timing belt from the printer. Figure 7–11 (1) Lower timing belt is 171-tooth (no ribbon saver option) or 212-tooth (ribbon saver option installed) Replacement Reverse previous procedures to replace the lower timing belt, making sure that the belt is routed properly for your printer’s configuration (see Figure 7–12).

  • Page 71: Lower Timing Belt (300 Dpi)

    Lower Timing Belt (300 DPI) Removal Turn off the printer and remove the AC power cord. Remove the printer covers (see page 7–3). Loosen the upper tensioner adjustment screw located on the rear bearing plate (see Figure 7–13). Carefully slide the upper timing belt off the 36 tooth pulley. Figure 7–13 Removal and Replacement 7–13...
  • Page 72 Loosen the lower tensioner adjustment screw (see Figure 7–14). Carefully remove the lower timing belt from the printer. Figure 7–14 (1) Lower timing belt is 175-tooth (no ribbon saver option) or 215-tooth (ribbon saver option installed) Replacement Reverse previous procedures to replace the lower timing belt, making sure that the belt is routed properly for your printer’s configuration (see Figure 7–12).

  • Page 73: Upper Timing Belt

    Upper Timing Belt NOTE: The upper timing belt and rear bearing plate are used only on printers equipped with the thermal transfer option. Removal Turn off the printer and remove the AC power cord. Remove the printer cover (see page 7–3). Loosen the upper tensioner adjustment screw located on the rear bearing plate (see Figure 7–15).
  • Page 74 Figure 7–16 Replacement Reverse previous procedures to replace the upper timing belt. Re-adjust the upper tensioner to remove all remaining timing belt slack. Replace previously removed cable clamp. Re-install printer cover (see page 7–4). Install media and print a configuration label. 7–16 Removal and Replacement...

  • Page 75: Drive Motor Assembly

    Drive Motor Assembly Removal Turn off the printer and remove the AC power cord, media, and ribbon if installed. Remove the printer cover (see page 7–3). Remove the lower timing belt (see page 7–11). Raise the printhead and lower the lower right front panel. Figure 7–17 Loosen the set screw in the media sensor knob and remove the media sensor knob and spacer.
  • Page 76 Disconnect P6 from J6 on the switch regulator assembly (power supply). Cut all cable ties securing the drive motor assembly connector cable to the printer. 10. Using a Phillips screw driver, remove the four screws securing the drive motor assembly. 11.

  • Page 77: Platen

    Platen Removal Turn off the printer and remove the AC power cord, media, and ribbon if installed. Remove the printer cover (see page 7–3). Remove the lower timing belt (see page 7–11). Remove the three (3) 6–32 X .38 Phillips screws securing the control panel assembly.
  • Page 78 Carefully slide both the 36 tooth and 51 tooth pulleys off the platen shaft (see Figure 7–20). Figure 7–20 Loosen the media sensor knob set screw and remove the media sensor knob and spacer (see Figure 7–21). 7–20 Removal and Replacement...
  • Page 79 10. Remove the four (4) 6–32 X .38 black screws and external tooth washers used to secure the lower assembly bearing plate. 11. Remove the lower assembly bearing plate. Figure 7–21 Replacement Reverse previous procedures to replace. Re-adjust the lower tensioner after the timing belt has been re-installed. Install AC power cord and turn printer on.

  • Page 80: Dram

    DRAM DRAM SIMMs may need to be replaced if (1) they are found to be defective during troubleshooting or (2) a particular application requires printing of a longer label than is possible using the standard DRAM capacity (see page 1–10). The standard DRAM memory size is 1 MByte, which may be expanded to a maximum of 17 MBytes.
  • Page 81 Figure 7–24 Replacement Re-install printer cover (see page 7–4). Removal and Replacement 7–23...

  • Page 82: Eproms

    EPROMs EPROM memory consists of four 4 Mbit (512K x 8 bit) chips which together form a 2 MByte array, arranged as 512K x 32 bits. EPROM memory may need to be replaced if (1) it is found to be defective during the troubleshooting procedure or (2) it is desired to install a different printer emulation.
  • Page 83 Align the new EPROM chip’s pins with the socket, taking care to orient the notch in the chip with the notch in the socket. Press the chip down until fully seated, taking care not to bend any of the contact pins (see Figure 7–26). Figure 7–26 Insert all remaining EPROMs.

  • Page 84: Nvram

    NVRAM The 128 KByte non-volatile (NV)RAM is located on the Printer Controller PCBA in socket U8. When replacing the NVRAM, follow the procedure for printer cover removal and re-installation as detailed on page 7–3. The chip’s contact pins should be carefully aligned with the socket, being sure to match the notch in the chip with the notch in the socket.

  • Page 85: Circuit Description

    Circuit Description Chapter Contents Introduction ............8–2 Printer Controller PCBA .

  • Page 86: Introduction

    Introduction This section describes the operation of the Printer Controller PCBA which is responsible for host data processing, forms motion control, monitoring of various sensors and image processing. Printer Controller PCBA In the design of the printer, the majority of the electronic functions are combined on a single circuit board (the Printer Controller PCBA), utilizing the i960JA type microprocessor.
  • Page 87 Each of the functions listed above are described in detail in the paragraphs that follow. 80960JA Microprocessor and Microchip PIC16C55 Microcontroller The 80960JA Microprocessor (U47) is used to format label data prior to sending the data to the thermal printhead control circuits. The 80960JA calculates the proper strobe times used for each print cycle, based on printhead temperature, printhead voltage, etc.
  • Page 88 The i960 controls the +24 volts going to the thermal printhead. When software detects a lack of printhead activity, the +24 volts going to the printhead is switched off. Turning the printhead voltage off when not in use, enhances printhead reliability. The i960 controls the external UART used to send/receive serial data to/from the host computer.
  • Page 89 The i960 communicates with the Real Time Clock (U38). The i960 sends the printhead strobe data to the PIC16C55 via the 512 X 9 FIFO. The PIC communicates with the i960 via an interrupt signal, INT1N, and other signals conditioned by the FPGA, U50. Power-on reset for the two FPGAs (U50 and U54) is generated by Q1 and buffered by U33 (in on pin 1, out on pin 2) and U39 (in on pin 6, out on pin 4).
  • Page 90 Programmable Logic Device The Programmable Logic Device (U54) performs a multitude of functions related to memory and I/O control. The majority of these functions are listed below: Provides refresh to the DRAM chips by generating a CAS before RAS once every 15 microseconds (approximately). Serves as a wait state generator that can generate wait states and stretched control signals for each bus read/write cycle.
  • Page 91 Connection to the i960 is on the lower byte (bits 0 through 7) of the data bus. Timing for the device is provided by an 8 MHz clock (U45–12) generated by U54. An active high reset is connected to pin 24 and an interrupt signal (U45–18) is inverted by U52 and connected to the 80960JA’s internal interrupt controller.
  • Page 92 Input octal buffer U21 provides buffering for one membrane switch and the transfer switch. It also buffers signals not related to the front panel. Specifically, the memory cartridge present signal uses the buffer. The rewind sensor circuitry and the head home switch signal is presently not used. Enabling the input buffers occurs when i960 address the front panel and a read operation is executed.
  • Page 93 Transistor switch Q2 is used to switch the gain of the emitter between HIGH gain and LOW gain. When Q2 is turned on the resistor R147 is in parallel with potentiometer R3. This represents the LOW gain mode. When Q2 is turned OFF, the resistor R107 is no longer in parallel with R2, this represents the HIGH gain mode.
  • Page 94 The resistor R120 sets the operating current for the label present sensor emitter (LED). The resistor R80 with R81 are the load resistors for the label present sensor detector (photo transistor). Diodes D2 and D3 serve as voltage limiting diodes and capacitors C65 and C81 serve as AC coupling capacitors.
  • Page 95 Stepping Motor Control Lines The transport stepping motor is controlled by 4 lines coming from an octal latch (U46). The signals labeled PHA and PHB on J18 are used to control the motor phases by controlling the two halves of a dual full wave bridge circuit located on the switching regulator board.
  • Page 96 The ADDRRST signal is sent the FPGA (U50) from the PIC. This signal is used to reset the FPGA RAM address counter prior to the beginning of the next ”LOAD RAM” load cycle. The LOADRAM signal is sent to the FPGA from the PIC. This signal is used to tell the FPGA when a new ”LOAD RAM”...
  • Page 97 RS422 Drivers and Receivers The RS422 driver and receiver are contained in one chip (U39). This chip contains two RS422 drivers (only 1 is used) and two RS422 receivers. Resistor R118 is a line terminating resistor used to match the receiver input impedance to the impedance of the transmission line.

  • Page 98: Connector Function Summary

    Connector Function Summary J1 DRAM Socket. Provides connection for SIMM DRAM package. The factory installed standard 1 MByte of DRAM may be expanded to a maximum of 17 MBytes. J2 Operator Panel Interface Connector. Connects the Operator Panel PCBA to the Controller PCBA J4 Bi-directional Serial Port.

  • Page 99: Spare Parts

    Spare Parts Chapter Contents Cover Assembly ........... . 9–2 Operator Panel Assemblies .

  • Page 100: Cover Assembly

    Cover Assembly 9–2 Spare Parts...
  • Page 101 Cover Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–359 750057–359 Right Top Cover 750057–303 750057–303 Upper R/A Panel 750057–106 750057–106 Adhesive Tape 750057–339 750057–339 Right Cover Window 750057–360 750057–360 Left Top Cover 750057–361 750057–361 4–40 Internal Tooth Keps Nut 750057–362 750057–362 Top Hinge 750057–363 750057–363...

  • Page 102: Operator Panel Assemblies

    Operator Panel Assemblies 9–4 Spare Parts...
  • Page 103 Operator Panel Assemblies ITEM DESCRIPTION (T3024) (T3304) 750057–364 750057–364 4–24 X 3.75 PHP HILO Screw 750057–107 750057–107 Thread Forming M2.5 X 6 Screw 750057–302 750057–302 Operator Panel 750057–299 750057–299 Panel Door 750057–054 750057–054 16 X 2 LCD W/Backlight Assembly 750057–209 750057–209 LCD to Operator Panel Cable Assembly 750057–335 750057–335 Display PCBA...

  • Page 104: Mechanism Assembly (1.5 Inch Media Supply Hub) (1 Of 4)

    Mechanism Assembly (1.5 Inch Media Supply Hub) (1 of 4) 9–6 Spare Parts...

  • Page 105: Mechanism Assembly (1.5 Inch Media Supply Hub) (1 Of)

    Mechanism Assembly (1.5 Inch Media Supply Hub) (1 of 4) ITEM DESCRIPTION (T3204) (T3304) 750057–368 750057–368 Latch Handle 750057–287 750057–287 Platen 750057–369 750057–369 Lower Assembly Bearing Plate 202924–001 202924–001 Standoff Ext. 750057–371 750057–371 Nylon Bearing (.188 3L3–F) 750057–372 750057–372 Head Actuate Shaft 750057–373...

  • Page 106: Mechanism Assembly (3.0 Inch Media Supply Hub) (2 Of 4)

    Mechanism Assembly (3.0 Inch Media Supply Hub) (2 of 4) 9–8 Spare Parts...

  • Page 107: Mechanism Assembly (3.0 Inch Media Supply Hub) (2 Of)

    Mechanism Assembly (3.0 Inch Media Supply Hub) (2 of 4) ITEM P/N (T3204) P/N (T3304) DESCRIPTION 750057–368 750057–368 Latch Handle 750057–287 750057–287 Platen 750057–369 750057–369 Lower Assembly Bearing Plate 202924–001 202924–001 Standoff Ext. 750057–371 750057–371 Nylon Bearing (.188 3L3–F) 750057–372 750057–372...

  • Page 108: Mechanism Assembly (3 Of 4)

    Mechanism Assembly (3 of 4) 9–10 Spare Parts...

  • Page 109: Mechanism Assembly (3 Of)

    Screw, Block, Sem (6–32 x 3/8) 750057–313 750057–313 2A S/B 250V Fuse (1) Firmware EPROMs not included (2) Used when the ribbon saver option is installed (3) Used only when the thermal transfer option is installed (Models T3204–21 and T3304–21) Spare Parts 9–11...

  • Page 110: Mechanism Assembly (4 Of 4)

    Mechanism Assembly (4 of 4) 9–12 Spare Parts...

  • Page 111: Mechanism Assembly (4 Of)

    Mechanism Assembly (4 of 4) ITEM DESCRIPTION (T3204) (T3304) 750057–325 750057–325 Printer Controller PCBA Power Cable Assembly 750057–326 750057–326 Control Cable Assembly 750057–324 750057–324 Printhead Power Cable Assembly 750057–327 750057–327 Bridge Cable Assembly 750057–441 750057–441 Printhead Data Cable Assembly 750057–442 750057–442 In–Line Fuse Jumper Cable Assembly...

  • Page 112: Printhead Mount Assembly

    Printhead Mount Assembly 9–14 Spare Parts...
  • Page 113 Printhead Mount Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–443 750057–624 Printhead Mounting Plate 750057–444 750057–444 Printhead Pivot Bracket 750057–602 750057–602 .1895 X .314 X 3 1 Flange Bearing 750057–445 750057–445 3/16 Set Screw Collar 750057–446 750057–446 .360 X .026 X .75 Compression Spring 750057–447 750057–447...

  • Page 114: Linkage Assembly

    Linkage Assembly 9–16 Spare Parts...
  • Page 115 Linkage Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–457 750057–457 Bracket Mounting Spring Linkage 750057–458 750057–458 Inner Link 750057–459 750057–459 Outer Link 750057–460 750057–460 Spring Outer Bracket 750057–461 750057–461 Pivot Pin 750057–462 750057–462 .411 ID X .250 OD Flat Washer 750057–463 750057–463 .280 OD X .210 ID X .12 Nylon Spacer...

  • Page 116: Bearing Plate Lower Assembly

    Bearing Plate Lower Assembly 9–18 Spare Parts...
  • Page 117 Bearing Plate Lower Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–468 750057–468 Lower Plate 750057–469 750057–469 Oilite FF 312–2 Bearing 750057–470 750057–470 Flanged FF–312 Bearing 750057–296 750057–296 Head Lift Knob 750057–307 750057–307 3/8” Cap Push Nut Washer 750057–471 750057–471 Lower Plate Cam Compression Spring Spare Parts 9–19...

  • Page 118: Media Sensor Assembly

    Media Sensor Assembly 9–20 Spare Parts...
  • Page 119 Media Sensor Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–569 750057–569 Stud Broaching, 1/2” long 750057–612 750057–612 Media Sensor Cable Assembly 750057–472 750057–472 Top Sensor Guide 750057–473 750057–473 Bottom Sensor Guide 750057–474 750057–474 4–40 Hex Miniature Nut 750057–475 750057–475 Sensor Guide Bracket 750057–476 750057–476 4”...

  • Page 120: Thermal Transfer Mechanism (1 Of 2)

    Thermal Transfer Mechanism (1 of 2) NOTE: This section applies only to printers equipped for thermal transfer operation. ‘ 9–22 Spare Parts...

  • Page 121: Thermal Transfer Mechanism (1 Of)

    Thermal Transfer Mechanism (1 of 2) ITEM DESCRIPTION (T3204) (T3304) 750057–289 750057–289 Ribbon Tension Roller 750057–470 750057–470 FF–312 Flanged Bearing 750057–291 750057–291 Ribbon Supply Assembly 750057–484 750057–484 4–40 X .25 SEMS COMB Screw 750057–288 750057–288 Ribbon Rewind J Hook 750057–294 750057–294 Ribbon Take Up Hub Assembly 750057–485 750057–485 .312 Flanged Bearing...

  • Page 122: Thermal Transfer Mechanism (2 Of 2)

    Thermal Transfer Mechanism (2 of 2) NOTE: This section applies only to printers equipped for thermal transfer operation. 9–24 Spare Parts...

  • Page 123: Thermal Transfer Mechanism (2 Of)

    Thermal Transfer Mechanism (2 of 2) ITEM DESCRIPTION (T3204) (T3304) 750057–492 750057–492 Clutch Mounting Hub 750057–493 750057–493 Clutch Roller 750057–494 750057–494 4–40 X .25 LG Black SEMS Screw 750057–495 750057–495 Ribbon Sensor Board Assembly 750057–496 750057–496 Insulator 750057–497 750057–497 .250 ID Flanged Bushing 750057–283 750057–283 1/4 Shaft Collar...

  • Page 124: Rewind Option Assembly (1 Of 2)

    Rewind Option Assembly (1 of 2) 9–26 Spare Parts...

  • Page 125: Rewind Option Assembly (1 Of)

    Rewind Option Assembly (1 of 2) ITEM DESCRIPTION (T3204) (T3304) 750057–285 750057–285 Rewind Arcplate 750057–338 750057–338 Label Rewinder Clasp 750057–503 750057–503 Thumb Screw Knob 750057–292 750057–292 Label Rewinder Assembly 750057–287 750057–287 Platen Spare Parts 9–27...

  • Page 126: Rewind Option Assembly (2 Of 2)

    Rewind Option Assembly (2 of 2) 9–28 Spare Parts...

  • Page 127: Rewind Option Assembly (2 Of)

    750057–505 750057–505 Nylon .187THK X .375 ID X .50 Spacer 750057–300 750057–300 44T With Clutch Pulley 750057–293 750057–293 Retainer Assembly Clutch 750057–310 750057–310 200T .080 Pitch 1/4W Timing Belt (1) Used with direct thermal only printers (Models T3204–20 and T3304–20) Spare Parts 9–29...

  • Page 128: Final Assembly

    Final Assembly 9–30 Spare Parts...
  • Page 129 Final Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–506 750057–506 Mechanism Assembly 750057–646 750057–646 Rear Product S/N Safety Agency Label 750057–508 750057–508 Control Panel Assembly 750057–509 750057–509 Cover Assembly 750057–304 750057–304 Lower R/A Panel 750057–396 750057–396 6–32 X 3/8 Philips PH INT/S Screw 750057–280 750057–280 6–32 X .38 Screw...

  • Page 130: Label Guide Assembly

    Label Guide Assembly 9–32 Spare Parts...
  • Page 131 Label Guide Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–512 750057–512 Plate, Guide 750057–513 750057–513 Guide, Label Adjust 750057–400 750057–400 4–40 X 1/4 PH SEMS Screw 750057–515 750057–515 Mount, Label Guide 750057–516 750057–516 Plate, Bearing 750057–517 750057–517 Compression Spring, .24 X .50 Spare Parts 9–33...

  • Page 132: Ribbon Saver Option (1 Of 2)

    Ribbon Saver Option (1 of 2) 9–34 Spare Parts...

  • Page 133: Ribbon Saver Option (1 Of)

    Ribbon Saver Option (1 of 2) ITEM DESCRIPTION (T3204) (T3304) 750057–518 750057–518 Gear Spacer 750057–519 750057–519 Gear Brake Assembly 750057–520 750057–520 Gear Cover 750057–395 750057–395 6–32 X 3/8 Black SEM Screw 750057–522 750057–522 1/4 Retaining Snap Ring 750057–523 750057–523 1/4 Nyliner Bushing 750057–524 750057–524 Pinch Roller Ribbon Saver Assembly...

  • Page 134: Ribbon Saver Option (2 Of 2)

    Ribbon Saver Option (2 of 2) 9–36 Spare Parts...

  • Page 135: Ribbon Saver Option (2 Of)

    Ribbon Saver Option (2 of 2) ITEM DESCRIPTION (T3204) (T3304) 750057–453 750057–453 #4 Lock Washer 750057–527 750057–527 4–40 X 1/4 SOC CAP HD Screw 750057–528 750057–528 Brake Mount 750057–529 750057–529 .312 Nyliner Bushing 750057–522 750057–522 1/4 Retaining Snap Ring 750057–523 750057–523 1/4 Nyliner Bushing 750057–530 750057–530 Lever Lift Assembly...

  • Page 136: Head Lifter Assembly

    Head Lifter Assembly 9–38 Spare Parts...
  • Page 137 Head Lifter Assembly ITEM DESCRIPTION (T3204) (T3304) 750057–538 750057–538 Head lifter Motor Assembly 750057–382 750057–382 8–32 KEPS ZP Nut 750057–540 750057–540 Head lift Sensor Assembly 750057–400 750057–400 4–40 X 1/4 Phillips Pan Head EXT/S Screw 750057–542 750057–542 .250 ID Needle Bearing 750057–543 750057–543 1/4 Truac 5103 Crescent Retaining Ring...

  • Page 138: Media Hub Assembly (Standard)

    Media Hub Assembly (Standard) 9–40 Spare Parts...

  • Page 139: Media Hub Assembly (Standard)

    Media Hub Assembly (Standard) ITEM DESCRIPTION (T3204) (T3304) 202929–001 202929–001 Assy, Hub Mount 202940–001 202940–001 Spring Compression 202920–001 202920–001 Washer, Slip clutch 202933–001 202933–001 Disk, Slip Clutch 202912–001 202912–001 Ring, Retain External 5/8 shaft 202939–001 202939–001 Torsion Spring 202935–001 202935–001 Hub, Media, 3–inch 202914–001 202914–001 Washer, Flat, M4 Black...

  • Page 140: Adjustable Media Hub Assembly Option

    Adjustable Media Hub Assembly Option 9–42 Spare Parts...
  • Page 141 Adjustable Media Hub Assembly Option ITEM DESCRIPTION (T3204) (T3304) 202930–001 202930–001 Mount, Hub 202932–001 202932–001 Spacer, Media Hub 202938–001 202938–001 Spring, Torsion 202925–001 202925–001 Clutch, Hub 202931–001 202931–001 Disc, Friction 202919–001 202919–001 Washer, Double 202937–001 202937–001 Washer, 3 Wave 202926–001 202926–001 Nut, Clutch Pack 202913–001 202913–001 Screw, Phillips, 2–56 x 1/4...

  • Page 142: Present Sensor Option

    Present Sensor Option 9–44 Spare Parts...
  • Page 143 Present Sensor Option ITEM DESCRIPTION (T3204) (T3304) 750057–429 750057–429 SCREW SEM 4–40 202847–001 202847–001 BRACKET, SENSOR MOUNTING 202861–001 202861–001 PRESENT SENSOR ASSY 750057–361 750057–361 NUT 4–40 750057–078 750057–078 BUSHING Spare Parts 9–45...

  • Page 144: Cutter And Tray Options

    Cutter and Tray Options Cutter 9–46 Spare Parts...
  • Page 145 Cutter Option ITEM DESCRIPTION (T3204) (T3304) 202846–001 202846–001 SCREW, CPA SOCHD M4 X 6 202851–001 202851–001 COVER, LOWER, CUTTER 202862–001 202862–001 CUTTER, MECH 202844–001 202844–001 NUT, ELASTIC STOP 8–32 750057–597 750057–597 WASHER–BELLEVILLE 202850–001 202850–001 LATCH–CUTTER 202858–001 202858–001 SHAFT, PIVOT 750057–002 750057–002 E RING .188 DIA 750057–476 750057–476 TYWRAP 4”...
  • Page 146 Tray 9–48 Spare Parts...
  • Page 147 Tray Option ITEM DESCRIPTION (T3204) (T3304) 202853–001 202853–001 MOUNTING BRACKET, LABEL TRAY 202842–001 202842–001 WASHER, FLAT, NYLON 750057–645 750057–645 KNOB, PLASTIC #244 8–32 TAPPED 202855–001 202855–001 LINKAGE, LABEL TRAY 202844–001 202844–001 NUT, ELASTIC STOP 8–32 202856–001 202856–001 GUIDE, LABEL TRAY 202854–001 202854–001 TRAY, LABEL...
  • Page 148 9–50 Spare Parts...
  • Page 150 OX 163, IEUWEWEG 283 NL-6600 A IJCHEN ETHERLANDS (31) 24 6489489 HONE: (31) 24 6489499 RINTRONIX HANGI OUTH TREET 1 HANGI OUTH NDUSTRIAL STATE 486763 INGAPORE (65) 542 0110 HONE: (65) 543 0220 ISIT OUR WEBSITE AT: http://www printronix com 136580–001C...

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