Do you have a question about the CP 150 and is the answer not in the manual?
Questions and answers
MISTY CRAIG
February 17, 2025
Our equipment keeps saying leads are off on RL. We have replaced the leads and are still getting the same message.
1 comments:
Mr. Anderson
May 14, 2025
The "leads are off" message on the Welch Allyn CP 150 after replacing the leads could be caused by:
- Poor electrode contact - Improper skin preparation - Improper electrode storage or handling - A defective or loose lead - A faulty patient cable
Recommended actions:
- Replace the electrode - Prepare the patient’s skin properly - Ensure electrodes are stored and handled correctly - Check and secure all leads - Replace the patient cable if needed
Service loaners ....................12 Service options ....................12 Repairs ....................... 13 Configuration options ..................14 The Welch Allyn Service Tool ................15 Returning products .................... 15 Service menu ..................19 Access the Service screen ................. 19 Performing the full-functional tests ..............19 Manage tests and other files ................
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Contents CP 150 12-lead resting electrocardiograph Field replaceable units ................75 Housing top assembly ..................75 Housing base assembly ..................79 Printer 8 inch assembly tray ................82 Bottom assembly ....................86 Partners in Care service and support agreements ..........90 Service and repair training ..................
Symbols Documentation symbols WARNING The warning statements in Caution The caution statements in this this manual identify conditions or manual identify conditions or practices practices that could lead to illness, injury, that could result in damage to the or death. equipment or other property, or loss of data.
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2 Symbols CP 150 12-lead resting electrocardiograph Protective earth Nonionizing electromagnetic radiation Equipotential terminal AC input power Connectivity symbols Ethernet (RJ-45 ) Shipping, storing, and environment symbols This end up Keep dry Fragile Relative humidity limit Temperature limits Atmospheric air-pressure limits...
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Symbols 3 Miscellaneous symbols Manufacturer Defibrillation-proof Type CF applied parts Reference/Model number Serial number Batch code Reorder/Catalog number Intertek ETL listed Do not reuse Electromagnetic compatibility (EMC) information For information about electromagnetic compatibility (EMC), see the Welch Allyn website. http://www.welchallyn.com/apps/products/product_category.jsp?catcode=CARDIO...
Safety All users of the device must read and understand all safety information presented in this manual before using or repairing the device. United States federal law restricts this device to sale, distribution, or use by or on the order of a licensed medical practitioner. General warnings Warnings indicate conditions or practices that could lead to illness, injury, or death.
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WARNING To provide CF protection use only accessories approved by Welch Allyn. Visit www.welchallyn.com. The use of any other accessories can result in inaccurate patient data, can damage the equipment, and can void your product warranty.
CAUTION Use only parts and accessories, including thermal paper, that were supplied with the device and available through Welch Allyn. The use of accessories other than those specified may result in degraded performance or unsafe use of this device.
Always follow the manufacturer’s directions for use. • Welch Allyn recommends that only Welch Allyn service personnel or an authorized repair center perform warranty service. Performing unauthorized service on a device that is within warranty may void the warranty.
Service manual Safety 9 Electrostatic discharge (ESD) CAUTION Electrostatic discharge (ESD) can damage or destroy electronic components. Handle static-sensitive components only at static-safe workstation. CAUTION Assume that all electrical and electronic components of the device are static-sensitive. Electrostatic discharge is a sudden current flowing from a charged object to another object or to ground.
CAUTION No component-level repair of circuit boards and subassemblies is supported. Use only the repair procedures described in this manual. Find instructions for functional testing and performance verification in the Welch Allyn Service Tool help files (http://www.welchallyn.com/promotions/services/ serviceTool.htm.) This manual applies only to this device.
Partners in Care service agreements While product warranties provide basic assurance of Welch Allyn hardware quality, they may not include the full range of services and support you need. Welch Allyn offers premium service and support through our Partners in Care program. Whether you service your own devices and require a minimum of support or rely on us to service your device, Welch Allyn provides a program that will meet your needs.
Qualified service personnel or a Welch Allyn Service Center should repair products out of warranty. If you are advised to return a product to Welch Allyn for repair or routine maintenance, schedule the repair with the service center nearest you.
14 Overview CP 150 12-lead resting electrocardiograph Configuration options Model Accessories Language Power cord CP150 1 - AHA, disposable EN - English 2 - Europe A - Interpretation 2 - IEC, disposable FR - French 3 - Israel None 3 - AHA, reusable...
• Install updates. The service tool can read the firmware version of the CP 150 and check for available updates or upgrades. • Install upgrades. An interpretation option is available for purchase. The CP 150 basic can be upgraded to a CP 150A (with the Interpretation option) through the Welch Allyn Service Tool.
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Welch Allyn does not accept returned products without an RMA. 2. Ship the device to Welch Allyn, observing these packing guidelines: a. Remove from the package the battery, all hoses, connectors, cables, sensors, power cords, and other ancillary products and equipment, except those items that might be associated with the problem.
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Put the device, enclosed in a plastic bag with a packing list, into the original shipping carton with the original packing materials or into another appropriate shipping carton. d. Write the Welch Allyn RMA number with the Welch Allyn address on the outside of the shipping carton.
The ECG home tab appears. Performing the full-functional tests Complete the full-functional CP 150 tests to verify device functionality. Note If any of the tests fail, contact Technical Support. With the Service tab open, touch the CP 150 button to perform a hardware test.
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20 Service menu CP 150 12-lead resting electrocardiograph Battery test Note Ensure that the battery is installed and has been charged for a minimum of six hours before preforming this test. 1. If the Battery remaining field shows 70% or less, replace the battery.
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USB port on the PC. Verify that the PC is able to recognize CP150 device. 2. Touch the Yes button to confirm that your PC recognized the CP 150 device, or touch the No button if your PC did not recognized the CP 150 device.
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22 Service menu CP 150 12-lead resting electrocardiograph Keypad test 1. Press the button on the device to check the On/Off keypad. "Pass" is indicated with a √ (check mark) and "fail" is indicated with an X. 2. Touch the...
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Service manual Service menu 23 ECG lead test 1. Connect a set of known good Patient Cables, with leads, to an ECG simulator. Note Any yellow dots on the lead-status screen indicate unattached or poorly attached leads. 2. Verify the lead placement on the screen by observing that all leads appear green. 3.
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24 Service menu CP 150 12-lead resting electrocardiograph Printer pattern test 1. Touch the Print button to print a test page. 2. Use the specifications in the Print verification checklist table and the Printer pattern test and check point graphic to verify the correct operation of the device printer by comparing the pattern printed on the test page.
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Service manual Service menu 25 Printer pattern test and check point 3. Touch the Yes button if the test page printed correctly, or touch the No button if the test page did not print correctly. 4. Touch the (Next) button to perform the next functional test. Printer speed test 1.
1. Use an ethernet cable to connect the device to a known network and setup the CP 150 DHCP. (Refer to the CP 150 DFU for setup instructions.) Under the Host address, enter the IP of a PC connected to the network. Touch the Ping test button to perform the test.
Prints the patient list from the internal memory of the CP Tests + Delete Deletes the patient test list from the internal memory of the CP 150 Tests + Send Sends the patient test list to a USB flash drive...
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28 Service menu CP 150 12-lead resting electrocardiograph...
AC power and call Welch Allyn Technical Support immediately. CAUTION Replace parts, components, or accessories only with parts supplied or approved by Welch Allyn. The use of any other parts can lead to inferior performance and will void the product warranty.
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30 Troubleshooting CP 150 12-lead resting electrocardiograph Symptom Possible cause Suggested action Loose, disconnected, or faulty switch Reseat or replace the switch power power flex flex. Faulty or disconnected 60W power Reseat or replaced the harness power supply supply PSU-BAT-SMB-PRT-SMCE.
Faulty print head Replace the print head assembly. Error loading the paper Check to ensure that the printer door is fully closed. Check the orientation of the paper. The wrong type of paper is being used Use only Welch Allyn approved paper.
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32 Troubleshooting CP 150 12-lead resting electrocardiograph Symptom Possible cause Suggested action The electrocardiograph shuts down The battery is low or faulty Recharge or replace the battery. during printing when in battery mode Printing is not clear or is garbled...
Service manual Troubleshooting 33 User interface User interface problems: Symptom Possible cause Suggested action Battery is critically low. Shutting Device automatically shuts down when it reaches If you are unable to charge the down... the shutdown capacity. This prevents file system battery, replace the battery.
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34 Troubleshooting CP 150 12-lead resting electrocardiograph Symptom Possible cause Suggested action The read-back file is corrupted. During the Service USB Host test, the content Ensure that the thumb drive and read back from file does not match the content port are working properly.
Check for faulty battery and/or 60W power supply. Check all harness to power supply. System Fault code 0x02 Core image verification fails Reload software through the Welch Allyn Service Tool. System Fault code 0x03 Core image is missing Reload software through the Welch Allyn Service Tool.
Disassembly, repair, and reassembly These procedures provide instructions for system disassembly and board removal. Except where otherwise noted, the assembly procedure is the reverse of the disassembly procedure. Each procedure may include the following: • Reassembly notes: This contains information specific to reassembly not addressed in the disassembly instructions.
38 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph CP 150 Disassembly Flow chart Required tools and equipment • #1 Phillips bit • #2 Phillips bit • #10 Torx bit • 3/16" Hex Socket • 1/4" Hex Socket •...
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Service manual Disassembly, repair, and reassembly 39 Part Number Description Torque Bit/Socket Type Specification 713016 5 +/- 0.5 in-lbs. Screw, M3 x 5 Pan Head 761077-1 Wire Tie 713031 5 +/- 0.5 in-lbs. Screw, M4 X 10 Pan Head 716960 2 +/- 0.5 in-lbs.
40 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Power down the electrocardiograph 1. Press and hold the button for 6-8 seconds to shut down the electrocardiograph. 2. Remove the power supply. Remove the battery...
Service manual Disassembly, repair, and reassembly 41 Separate the top housing assembly from the bottom housing assembly 1. Turn the electrocardiograph over to access the bottom housing assembly. 2. Remove the eight M4x10 screws from the bottom housing assembly using a #2 Phillips bit.
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42 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph 7. Cut the wire tie on the EMC ferrite. 8. Disconnect the CN202 connector from the printer board. 9. Disconnect the three harness cables at J8, J17, and J10 from the small-medium compute engine (SMCE) board.
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Service manual Disassembly, repair, and reassembly 43 Reassembly note • Use a #2 Phillips bit and a Torque driver calibrated to 5.0 in-lb ± 0.5 in-lb to secure the bottom housing screws. Cable identification for reassembly:...
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44 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Top housing disassembly These procedures provide instructions for system disassembly and board removal. Except where otherwise noted, the assembly procedure is the reverse of the disassembly procedure. Remove the Input/Output (I/O) communication board •...
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Service manual Disassembly, repair, and reassembly 45 2. Disconnect the J7 and J15 connectors from the SMCE board. 3. Disconnect the WA7 connector from the display assembly. 4. Remove the four 4-20 self-tapping screws from the I/O board using a #1 Phillips bit.
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46 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph 5. Disconnect the three harness cables at CN201, CN203, and CN202 from the I/O board and remove the harnesses. Note Set the harness cables aside for reuse during reassembly. Reassembly note •...
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Service manual Disassembly, repair, and reassembly 47 Remove the SMCE board • Separate the top housing assembly from the bottom housing assembly as described. 1. Lift up the latch of the J18 connector on the SMCE board and disconnect the flex cable.
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48 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph 3. Remove the four M3x5 screws from the SMCE board using a #1 Phillips bit. Reassembly note • Use a #1 Phillips bit and a Torque driver calibrated to 5.0 in-lb ± 0.5 in-lb to secure...
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Service manual Disassembly, repair, and reassembly 49 Remove the LCD frame and display assembly • Separate the top housing assembly from the bottom housing assembly as described. 1. Remove the Pro-Gaff tape that holds the power switch flex cable to the LCD frame. 2.
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50 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Reassembly notes • Use a #2 Phillips bit and a Torque driver calibrated to 5.0 in-lb ± 0.5 in-lb to secure the LCD frame shoulder screws. Ensure that the LCD flex cable is not under the LCD frame.
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Service manual Disassembly, repair, and reassembly 51 Bottom housing disassembly These procedures provide instructions for system disassembly and board removal. Except where otherwise noted, the assembly procedure is the reverse of the disassembly procedure. Remove the ECG board • Separate the top housing assembly from the bottom housing assembly as described. 1.
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52 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Remove the ECG ferrite • Separate the top housing assembly from the bottom housing assembly as described. Gently open the two side-catches to remove the ECG ferrite and the ECG board harness from the printer top assembly.
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Service manual Disassembly, repair, and reassembly 53 Remove the battery housing cover and the battery connector board • Separate the top housing assembly from the bottom housing assembly as described. 1. Disconnect the CN304 connector from the printer board. 2. Remove the four 4-20 self-tapping screws from the battery housing top cover using a #1 Phillips bit.
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54 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph 3. Lift up the battery housing bottom cover and disconnect the J2 connector from the power supply board. 4. Disconnect the J2 and J3 connectors from the battery connector board to remove...
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Service manual Disassembly, repair, and reassembly 55 5. Remove the two 4-20 self-tapping screws from the battery connector board using a #1 Phillips bit. Reassembly notes • Use a #1 Phillips bit and a Torque driver calibrated to 5.0 in-lb ± 0.5 in-lb to secure the two 4-20 self-tapping screws to the battery connector board.
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56 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Remove the power supply assembly • Separate the top housing assembly from the bottom housing assembly as described. 1. Remove the P1 and J1 connectors from the power supply assembly.
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Service manual Disassembly, repair, and reassembly 57 Remove and disassemble the printer assembly • Separate the top housing assembly from the bottom housing assembly as described. 1. Remove the ground cable at the J603 connection from the printer board (PCA). 2.
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58 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Ground cable routing for reassembly:...
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Service manual Disassembly, repair, and reassembly 59 Remove the printer board • Separate the top housing assembly from the bottom housing assembly as described. 1. Remove the four connectors J602, CN601, J601, and CN602 from the printer board. 2. Remove the four 4-20 self-tapping screws from the printer board using a #1 Phillips bit.
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60 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph 3. Remove the printer board by lifting up the side nearest the print roller and sliding it out from the printer board catch. 4. Separate the printer tray assembly from the printer top assembly by pressing the tray eject button and sliding out the paper tray assembly.
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Service manual Disassembly, repair, and reassembly 61 Remove the printer door sensor • Separate the top housing assembly from the bottom housing assembly as described. 1. Remove the printer door sensor cable from the printer top assembly catches. 2. Remove the 4-20 pan head screw from the printer top assembly using a #10 Torx bit. Reassembly note •...
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62 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Remove the gear train and motor • Separate the top housing assembly from the bottom housing assembly as described. 1. Cut the wire tie on the motor harness. 2. Remove the three 4-20 screws from the printer tray using a #1 Phillips bit.
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Service manual Disassembly, repair, and reassembly 63 3. Remove the two M3x6 screws from the gear train assembly using a #1 Phillips bit. Reassembly notes • Use a #1 Phillips bit and a Torque driver calibrated to 5.0 in-lb ± 0.5 in-lb to secure the motor assembly to the printer tray.
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64 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph Remove the print head assembly • Separate the top housing assembly from the bottom housing assembly as described. 1. Feed the 3 printer harnesses through the openings of the printer top housing.
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Service manual Disassembly, repair, and reassembly 65 3. Pull the middle of the retaining rod slightly away from the print head and lift upward to remove the retaining rod from the ground-harness-side first. 4. Slide the print head assembly inward and then upward through the retaining channel. Remove the print head 1.
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66 Disassembly, repair, and reassembly CP 150 12-lead resting electrocardiograph 2. Remove the nut with ¼” Hex Socket to remove the ground harness. 3. Remove the two shoulder screws with a 3/16" Hex Socket. Note Take note of the shoulder screw direction during the...
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Service manual Disassembly, repair, and reassembly 67 4. Remove the two connectors on each side of the print head to remove the print head harness. Ensure that the connectors are reattached to their original Note position. Do not interchange the connectors. Reassembly notes •...
Essential Performance or EN/IEC 62353 - Medical Electrical Equipment - Recurrent Test and Test After Repair of Medical Electrical Equipment. Due to the variability of test equipment in the field, Welch Allyn does not include specific instructions to perform electrical safety tests. When performing electrical safety tests, refer to your test equipment manuals for detailed instruction.
Software updates process Update process 1. From the ECG home tab, touch the Settings tab. The ECG tab and the vertical ECG configuration tab appear. 2. Touch the Device tab. 3. Insert a USB flash drive containing the latest software into a USB port on the back of the device and touch the Update button.
72 Software updates process CP 150 12-lead resting electrocardiograph 4. “Update complete. Press OK to reboot.” displays after the update is complete. Reboot the device to use the updated software. Export and import of the device configuration Configuration files can be exported and imported for backup purposes or to configure multiple CP150 devices.
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Service manual Software updates process 73 Button Feature Update Updates the device software from a USB flash drive. Restore Restores the device settings to the factory defaults. Save Configuration Saves the device configuration to USB flash drive. Copy Configure Loads the device configuration from USB flash drive.
Field replaceable units This listing includes only field-replaceable service parts. Service kits are shown with the contents listed underneath each kit. Note Product accessories are listed separately on the CD. Housing top assembly Serv Kit, CP150, Hsg Top Assy (material no. CP150-0001) Item CP150 Subassembly Housing top 1 ea...
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76 Field replaceable units CP 150 12-lead resting electrocardiograph Serv Kit, CP150, 7 Inch Display (material no. CP150-0002) Item LCD Assy with Touch Panel 1 ea LCD Bezel 7 inch 1 ea Flex SMCE-LCD Display 7 inch 1 ea Serv Kit, Frame LCD (material no. CP150-0003)
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Service manual Field replaceable units 77 Item Frame LCD 1 ea Wire tie holder with adhesive 2 ea Serv Kit, SMCE PCA (material no. CP150-0004) Item Assy, Small Med Compute Eng (SMCE) 1 ea Harness SMCE-I/O 1 ea Harness I/O-LCD 1 ea CP150 EMC Harness Ferrite 3 ea...
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78 Field replaceable units CP 150 12-lead resting electrocardiograph Serv Kit, CP150, I/O PCA (material no. CP150-0005) Item CP150 Assy PCA 1 ea Harness SMCE-I/O 1 ea Harness I/O-LCD 1 ea CP150 EMC Harness Ferrite 3 ea ECG Ferrite 1 ea...
82 Field replaceable units CP 150 12-lead resting electrocardiograph Printer 8 inch assembly tray Serv Kit, CP150, Tray paper assy (material no. CP150-0009) Item 1 ea Printer 8 in Assy Tray 1 ea Printer 8 in Assy top (handle) 3 ea Screw 4-20 .375 pan phillips...
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Service manual Field replaceable units 83 Serv Kit, Printer Top Assy (material no. CP150-0010) Item Housing top 1 ea Latch assy 1 ea Coil spring right 2 ea Coil spring left 1 ea Retaining ring 1 ea Printer button 1 ea Screw 4-20 2 ea Locknut...
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84 Field replaceable units CP 150 12-lead resting electrocardiograph Serv Kit, Print Head Assy (material no. CP150-0011) Item Printhead Holder 1 ea Printhead 1 ea Printhead spring 1 ea Shoulder screws M3x0.5 2 ea Screw pan head phillips M3 x 0.5...
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Service manual Field replaceable units 85 Serv Kit, Gear Train Assy (material no. CP150-0012) Item Gear train assy 1 ea Serv Kit, Motor Assy (material no. CP150-0013) Item Harness motor 1 ea Wire tie 1 ea...
86 Field replaceable units CP 150 12-lead resting electrocardiograph Serv Kit, Door Sensor (material no. CP150-0014) Item Door Sensor 1 ea Plastite 4-20x.5 pan head screw 1 ea Bottom assembly...
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Service manual Field replaceable units 87 Serv Kit, Bottom assy (material no. CP150-0015) No. Item Subassembly housing base 1 ea Subassy Schurter Kea power mod 1 ea 2 ea Washer lock serrated 1 ea Ground poag 1 ea Bumpers 5 ea Serv Kit, Power supply (material no.
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88 Field replaceable units CP 150 12-lead resting electrocardiograph Serv Kit, Battery door (material no. CP150-0018) Item Battery door 1 ea Serv Kit, Miscellaneous (material no. CP150-0019) Item Screw 4-20 pan phillips Screw M4X10 Shoulder screw Pan head M3x5 Pan phillips M3x0.5 Shoulder screw M3x0.5...
90 Field replaceable units CP 150 12-lead resting electrocardiograph Partners in Care service and support agreements Material no. Item Material no. Item S1-CP150 CP150, Comprehensive partnership S1-CP150-2 CP150, Comprehensive, program 1 year Comprehensive partnership program 2 years S2-CP150 CP150, Bio-med partnership program...
Electrocardiograph or accessories. WARNING Liquids can damage electronics inside the CP 150 Electrocardiograph. Prevent liquids from spilling on or dripping into the CP 150 Electrocardiograph. If liquids are spilled on or drip into the CP 150 Electrocardiograph: 1. Disconnect the power plug.
Need help?
Do you have a question about the CP 150 and is the answer not in the manual?
Questions and answers
Our equipment keeps saying leads are off on RL. We have replaced the leads and are still getting the same message.
The "leads are off" message on the Welch Allyn CP 150 after replacing the leads could be caused by:
- Poor electrode contact
- Improper skin preparation
- Improper electrode storage or handling
- A defective or loose lead
- A faulty patient cable
Recommended actions:
- Replace the electrode
- Prepare the patient’s skin properly
- Ensure electrodes are stored and handled correctly
- Check and secure all leads
- Replace the patient cable if needed
This answer is automatically generated