Cardiac Science Burdick 8300 Service Manual page 21

Table 3-1: Troubleshooting chart (continued) (continued)
Problem
Keyboard
No response from one or more
1.
keys
2. Key sticks
Burdick 8300/8500
Solution
To verify the keyboard operation:
1. Select Setup.
Use the arrow keys (Next and Previous) to scroll to
2.
Service Functions and then press Select twice.
Select Keyboard Test to verify keyboard operation.
3.
If On/Standby key does not work, ensure the battery is installed
a.
and check the green power LED on the back panel to verify AC
power is available.
Restart the ECG device.
b.
Clean the outside surface keyboard with isopropyl alcohol.
c.
These solutions must be performed by qualified service personnel:
1. Verify the keyboard cable is securely connected.
2. Clean the underside of the keypad and the keypad contacts with
isopropyl alcohol.
3. Replace the keyboard cable.
Replace the top cover assembly.
4.
Replace the mainboard.
5.
Troubleshooting chart
70-00844-02 B 3-5