Physio Control LIFEPAK 9 - Page 80

TCP-Low Battery
Threshold Checks
Monitoring Check
170008-001 Orig
© August 1993 Physio-Control
+5V HIGH LIMIT DETECT (9) —»
+5V LOW LIMIT DETECT (10) ——
Testing 3
0
ΟΟΟΟΟ
A
pin 1 TT
+15V (4) ——— 라
«— (18) SW BATT
¥
SIGNAL GND (7) ————>
000000000
ΟΟΟΟΟΟ
+5V (11) ——O
0
0
(027 (25) V BATT
Figure 3-8 Test Connector J3
Table 3-6 Power Conversion PCB Voltage Checks
Test Point Signal Name Nominal Voltage Limits
Pin 4 +15V +15.0V +0.3V
Pin 11 +5V +5.00V +0.25V
Pin 9 +5V High Limit Detect +2.25V +0.15V
Pin 10 +5V Low Limit Detect +2.625V +0.125V
Pin 18 SW BATT +18.0V +2.0V to -2.4V
Pin 25 V BATT +18.4V +1.6V to -2.8V
1.
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.
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).
Use the DMM to monitor the voltage at the J3 pin 25 as shown in
Figure 3-8 (connect the DMM ground to J3 pin 7).
Turn the defibrillator/monitor power on and initially set the power
supply output to +18.00 +0.05 Vdc.
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.
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