GE Medical Systems PRN 50 Service Manual
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GE Medical Systems PRN 50 Service Manual

Digital writer
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PRN 50-M (M-Port)
and PRN 50 (AutoPort)
Digital Writer
Service Manual
2006503-001 Revision A

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Troubleshooting

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Summary of Contents for GE Medical Systems PRN 50

  • Page 1 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Service Manual 2006503-001 Revision A...
  • Page 2 400, Spectra-Overview, Spectra-Tel, ST GUARD, TRAM, TRAM-NET, TRAM-RAC, TRAMSCOPE, TRIM KNOB, Trimline, UNION STATION, UNITY logo, UNITY NETWORK, Vari-X, Vari-X Cardiomatic, VariCath, VARIDEX, VAS, and Vision Care Filter are trademarks of GE Medical Systems Information Technologies registered in the United States Patent and Trademark Office.

  • Page 3: Table Of Contents

    PRN 50-M and PRN 50 Digital Writers ....... . .
  • Page 4 Packaging ............5-8 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer...
  • Page 5 Schematic Diagram SD801390-001A ........6-14 Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 6 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 7: Introduction

    Introduction Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 8 For your notes PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 9: Manual Information

    Purpose of Manual This Service Manual covers the use of both: The PRN 50 writer with the M-Port interface (PRN 50-M) and The PRN 50 writer with the AutoPort interface (PRN 50). This manual provides technical information for service representatives and technical personnel involved in configuring and maintaining the PRN 50-M and the PRN 50 Digital Writers.

  • Page 10: Safety Information

    Intended Use Follow the directives stated below when using the PRN 50-M Digital Writer. This device is intended for use under the direct supervision of a licensed health care practitioner.

  • Page 11: Equipment Symbols

    A note provides application tips or other useful information to assure that you get the most from your equipment. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...

  • Page 13: Equipment Overview

    Equipment Overview Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 14 For your notes PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 15: Description Of Equipment

    The paper drive motor is the only moving part on the PRN 50-M. This motor operates at eight different speeds—0.1, 0.5, 1, 5, 10, 12.5, 25, and 50 mm/s.

  • Page 16: Controls

    Have a product name that ends in an ‘M’, e.g., Solar 8000M, PRN 50-M, Respiratory Mechanics-M. 2. AutoPort Host/Device products do not have any of the above. PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...
  • Page 17 (cardiac package) 8000M M-Ports RM-M Module Connected to Patient Monitor via Octanet Connectivity Device with M-Port to AutoPort Adapter COM2 Serial Port (DB9M Serial Port) CIC to PRN 50-M Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 18 The RJ-45 connector protocol is specified on the label below the RJ- 45 Connector (i.e, Power Switch AC Power Cable Connector M-Port or AutoPort Power Cable Async Comm Clamp Serial Number Back Panel PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...
  • Page 19 4. Make sure that all components have power on. 5. Make selections desired using the Graph menu options. With the PRN 50 writer (which has the AutoPort interface): 1. Connect one end of the RJ-45 cable into the RJ-45 connector in the PRN 50 connector labeled ‘AutoPort’.
  • Page 20 5. Make selections desired using the Graph menu options. With the PRN 50 writer (which has the AutoPort interface): 1. Connect the RJ-45 end of the FEMALE DB9 TO MALE RJ45 cable into the RJ-45 connector in the PRN 50 connector labeled ‘AutoPort’.

  • Page 21: Mounting

    Equipment Overview: Description of Equipment Mounting You must use the PRN 50-M or PRN 50 with an optional pedestal base (shown below) or with an optional mounting bracket. See the GE Medical Systems Information Technologies Monitoring Systems Mounting Reference Guide (pn 403799-010) for detailed information.

  • Page 22: Technical Specifications

    Net Weight 2.6 kg (5.7 lb) with base 1.2 kg (2.7 lb) without base Mounting Free-standing when used with optional pedestal base. Optional wall mount also available. 2-10 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 23: Certification

    UL 2601-1, CAN/CSA C22.2 No. 601.1, IEC 60601-1, and, if required, IEC 60601- 2-27, IEC 60601-2-30, IEC 60601-2-34, IEC 60601-1-1. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2-11 2006503-001...
  • Page 24 Equipment Overview: Technical Specifications For your notes 2-12 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 25: Troubleshooting

    Troubleshooting Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 26 For your notes PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 27: General

    General Troubleshooting the Components This section contains information that may be useful when you troubleshoot the PRN 50-M and PRN 50 Digital Writers. Visual Inspection This visual inspection procedure looks for obvious problems in the equipment. Simple failures–disconnected cables, foreign debris on a printed circuit board, or even missing hardware–can seriously affect the...

  • Page 28: Controlling Electrostatic Discharge Damage

    Semiconductors and electrical/electronic assemblies should be stored only in antistatic bags or boxes. These guidelines may not guaranty a 100% static-free workstation, but will greatly reduce the potential for failure of any electrical/electronic assemblies. PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 29: Fuse Replacement

    Troubleshooting: General Fuse Replacement The fuse drawer on the PRN 50-M contains two metric fuses (pn 409801-003). Follow these steps to replace the fuses. 1. Place the power switch on the power-entry module in the position. 2. Remove the power cord from the mains power source and the power- entry module.

  • Page 30: Thermal Writer Replacement Procedure

    Always use the switch to apply power. Remove power cord from unit. 2. Disconnect the PRN 50-M or PRN 50 from the patient monitor and communication network, if applicable. Disassembly To remove the thermal writer assembly, refer to “Writer Replacement...
  • Page 31 3. Slightly tug on the flex cable to confirm that the connector has latched. 4. Carefully slide the two halves of the PRN 50-M or PRN 50 back together, open the paper carriage door and tighten the two screws. Do NOT overtighten the screws. Overtightening the screws could cause damage to the PRN 50-M or PRN 50.
  • Page 32 Separate the Assembly Incorrect Correct Inside Front Bezel Remove the Flex Cable Unlock the Flex Cable Remove & Replace the Lock the Flex Cable Writer Reattch the Flex Cable PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 33: Power Supply Replacement Procedure

    50 back together. Correct ESD Shield View Incorrect 6. Carefully slide the two halves of the PRN 50-M or PRN 50 back together, open the paper carriage door and tighten the two mounting screws Completion 1. Reattach the power cord to the unit.
  • Page 34 6. Return removed power supply to GE Medical Systems Information Technologies Service. Completion 1. Replace power cord to unit. 2. To verify the operation of the PRN 50-M or PRN 50, complete the “System Performance Test” on page 4-9. 3. Because the thermal writer was replaced, perform the “Ground...

  • Page 35: Interface Pcb Replacement Procedure

    ) switch at back OFF ( ). Always use the ON/ OFF switch to apply power. Remove the power cord from unit. 2. Disconnect the PRN 50-M or PRN 50 from the patient monitor and communication network, if applicable. Disassembly To gain access to the power supply assembly, refer to the illustrations on the previous page and do the following.
  • Page 36 Troubleshooting: General Completion 1. Replace power cord to unit. 2. To verify the operation of the PRN 50-M or PRN 50, complete the “System Performance Test” on page 4-9. 3. Because the thermal writer was replaced, perform the “Ground (Earth) Wire Leakage Current Tests” on page 4-14 and the “Enclosure Leakage Current Test”...

  • Page 37: Maintenance

    Maintenance Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 38 Maintenance: For your notes PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 39: Maintenance Schedule

    Inspection Inspect the PRN 50-M or PRN 50 on a regular basis. Follow these guideline when you inspect the equipment. Inspect the equipment for obvious physical damage and replace damaged items.

  • Page 40: General Cleaning

    Maintenance: Maintenance Schedule General Cleaning Exterior Cleaning Clean the PRN 50-M or PRN 50 on a regular basis. You may clean the exterior surfaces of the writer with a dampened lint- free cloth. Use one of the following approved solutions:...

  • Page 41: Cleaning The Print Head

    6. Wipe paper drive roller clean of any bits of paper and debris with Paper Drive Roller alcohol and a nonabrasive material. Completion Perform the “System Performance Test” on page 4-9 to verify PRN 50-M and PRN 50 operation. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...

  • Page 42: Performance Test

    OFF ( ). Always use the power switch on the back to apply power. 1. Turn the PRN 50-M or PRN 50 power switch on the back panel ON ( ). The DC motor should not “jerk” the paper and nothing should print on the paper.
  • Page 43 Sixth line – Printed on the sixth line is the speed the test patterns are printing. Seventh line – Printed on the seventh line is the duty cycle of percent of time the drive motor is on. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 44 Any “bumps” in the lines would be an indication of a speed control problem. Third Test Pattern This test pattern is not shown and used for production tests only. PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 45: System Performance Test

    1. Connect a simulator to the patient monitor. Simulate a patient’s ECG on the display. Refer to the appropriate user manual. 2. Depress any graph button and verify that the PRN 50-M or PRN 50 is printing the same information displayed on the CRT monitor.

  • Page 46: Completion

    LED then continues to flash until the next graph, when it reverts to a “steady on” state. Completion If the above conditions have been met, the PRN 50-M or PRN 50 is performing properly. 4-10 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer...

  • Page 47: Electrical Safety Tests

    Test Conditions Electrical safety tests may be performed under normal ambient conditions of temperature, humidity, and pressure. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 4-11 2006503-001...

  • Page 48: Wall Receptacle Test

    MAINS PLUG (ground pin in power cord). Refer to the US 120Vac power cord figure on the left. 3. Set the Ohm meter to the milliohm (mΩ) range. 4-12 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...
  • Page 49 ACCESSIBLE METAL PART which is PROTECTIVELY EARTHED shall not exceed 0.2 ohms. When taking this measurement move the customer’s power cord around, no fluctuations in resistance should be observed. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 4-13 2006503-001...

  • Page 50: Ground (Earth) Wire Leakage Current Tests

    Center-tapped and non-center-tapped circuits produce different leakage currents and the UL and IEC limits are different. 7. Set the polarity switch on the leakage tester to RVS (reverse). 4-14 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 51: Enclosure Leakage Current Test

    2. Connect a meter lead between the CHAS connector on the rear of the leakage tester and an unpainted, non-anodized chassis ground on the unit under test. 3. Set the leakage tester power switch to ON. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 4-15 2006503-001...

  • Page 52: Test Completion

    Disconnect all test equipment from the device. Disconnect the device power cord plug from the leakage tester power receptacle. Disconnect the leakage tester from the wall receptacle. 4-16 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 53: Upper Level Assembly

    Upper Level Assembly Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 54 Upper Level Assembly: For your notes PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 55: General

    General Upper Level This section provides identification and ordering information for the upper level assembly replacement parts of the PRN 50-M and PRN 50 Digital Writers. Circuit board, parts placement, and schematic diagrams are found in the next section of this manual.

  • Page 56: Parts List 418331-001B

    Packaging, Foam, Cube 421208-001 Carton, Accessory, Reverse Tuck 421208-002 Lable, Blank, 2.6 IN x .4 IN 404525-006 Paper Sample, 9402-046, 24/Case 4919-001 MNL SVCE PRN 50-M English 2006503-001 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 57: Exploded View

    Upper Level Assembly: Exploded View Exploded View Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...

  • Page 58: Block Diagram

    W2P1 A4J1 POWER SUPPLY CHASSIS INTERFACE PCB ASSY A3J4 A2J3 CHASSIS THERMAL PRINTER 50 MM CHASSIS 50 MM CSCAN FRONT PANEL ASSY LED1 LED2 POWER PAPER GRAPH STOP PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 59: Wiring Diagram

    DEVICE ID A4J1 A2J1 SW1J1 AC LINE W2E1 W2P1 SW1J4 NEUTRAL AUTOPORT* * PRN 50s have either an M-Port or W2E2 an AutoPort. They do not have BOTH. Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...

  • Page 60: Packaging

    Upper Level Assembly: Packaging Packaging PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 61: Interface Pcb

    Interface PCB Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 62 Interface PCB: For your notes PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 63: General

    RS-232 (M-Port or AutoPort) interface with newer hosts. An RS-422 interface is provided to maintain compatibility with the 7160 DDW. All hosts that connect to the 7160 DDW can connect to the PRN 50-M and PRN 50. All the necessary supply voltages for the PRN 50-M and PRN 50 are generated and distributed on this board.
  • Page 64 RS-422 Transceiver The RS-422 transceiver is used to convert the CPU transmitted data from +3.3V logic levels to RS-422 levels, and convert the received RS-422 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 65: Power Supply Requirements

    Signal Name Level Direction Description SID+ RS-232 Output RS-232 transmit RETURN Power Input RS-232 signal common dTxD Bi-directional Device identification SID– RS-232 Input RS-232 receive dRxD Input RS-232 clear-to-send Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 66 Pin # Signal Name Level Direction Description Power Input input positive supply Power Input input positive supply RETURN Power Input input return supply RETURN Power Input input return supply PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 67: Parts List 801390-002A

    Isolator, Optically-Coupled, SM 2602 407164-001 Volt Rgltr, Pos 5V, 700mA, SM 78M05 412613-001 VR1, 2 Diode, 600W, 15V, SM 405485-001 Diode, Transient Voltage Suppressor, 5V, 600W P6SMB6.8AT1 403189-001 Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...

  • Page 68: Parts Location Diagram 801390-002A

    Interface PCB: Parts Location Diagram 801390-002A Parts Location Diagram 801390-002A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 69: Schematic Diagram Sd801390-002A

    Interface PCB: Schematic Diagram SD801390-002A Schematic Diagram SD801390-002A Sheet 1 of 3 Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 2006503-001...
  • Page 70 Interface PCB: Schematic Diagram SD801390-002A Sheet 2 of 3 6-10 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...
  • Page 71 Interface PCB: Schematic Diagram SD801390-002A Sheet 3 of 3 Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 6-11 2006503-001...

  • Page 72: Parts List 801390-001A

    Isolator, Optically-Coupled, SM 2602 407164-001 Volt Rgltr, Pos 5V, 700mA, SM 78M05 412613-001 VR1, 2 Diode, 600W, 15V, SM 405485-001 Diode, Transient Voltage Suppressor, 5V, 600W P6SMB6.8AT1 403189-001 6-12 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

  • Page 73: Parts Location Diagram 801390-001A

    Interface PCB: Parts Location Diagram 801390-001A Parts Location Diagram 801390-001A Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 6-13 2006503-001...

  • Page 74: Schematic Diagram Sd801390-001A

    Interface PCB: Schematic Diagram SD801390-001A Schematic Diagram SD801390-001A Sheet 1 of 3 6-14 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...
  • Page 75 Interface PCB: Schematic Diagram SD801390-001A Sheet 2 of 3 Revision A PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer 6-15 2006503-001...
  • Page 76 Interface PCB: Schematic Diagram SD801390-001A Sheet 3 of 3 6-16 PRN 50-M (M-Port) and PRN 50 (AutoPort) Digital Writer Revision A 2006503-001...

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