TCP-Low Battery-Trouble Shooting
TCP - Low Battery Threshold Checks1. With the defibrillator/monitor power off, remove the front panel to access the test connector J3 on the Power Conversion PCB (leave the front panel connector cable connected). For disassembly instructions, refer to page 4-7, Front Panel Removal. 2. Remove the battery door on the bottom of the defibrillator/monitor and disconnect the battery. Connect the DC power supply to the battery connector inputs. Connect ground to pin 1 or 2 (black wire) and power to pin 3 or 4 (red wire). Monitoring Check1. Use the DMM to monitor the voltage at the J3 pin 25 as shown in Figure 3-7 (connect the DMM ground to J3 pin 7). 2. Turn the defibrillator/monitor power on and initially set the power supply output to +18.00 ±0.05Vdc. 3. Slowly decrease the output voltage until the monitor displays the message LOW BATTERY: CONNECT AC POWER (decrease the power supply voltage quickly enough to cause the message to appear within 45 seconds or less). Confirm that the power supply voltage level is within the Low Battery Limits listed for the Monitoring Check in Table 3-7. 4. Slowly reduce the power supply voltage to +14.5V for one minute and look for the CRT display to blank out. If this does not happen, reduce the voltage to +14.4V for one minute and again look fot the CRT display to blank. If this does not occur at +14.4V, confirm that the CRT display shuts down within one minute at the lower limit (+14.29V) shown in Table 3—7 for the Monitoring Check. |
