Philips HEARTSTART XLT Service Manual page 62

Unit Unresponsive
Table 3-1 Unit Unresponsive (Continued)
Test
4. Observe unit's response.
5. Attempt to power up unit.
3-10
Result
Unit powers up to some
working state.
Unit still unresponsive.
Unit powers up to some
working state.
Unit still unresponsive.
Possible Causes
Main fuse open. 1. Replace Main Fuse
2. Replace Power PCA and
Open in battery wir- 1. Check/replace Battery
ing.
2. Check/replace wiring to
Short or other failure Disconnect printer and dis-
somewhere in unit. play from Control PCA at
Control PCA. Then pro-
ceed to step 5.
Short in printer or dis- Isolate the fault by recon-
play. necting one at a time and
powering up again. Then
replace the display or printer
as needed.
Short or other failure 1. Replace Control PCA.
somewhere in unit.
2. Replace Power PCA.
3. Replace Interface PCA.
If all above unsuccessful,
return unit for bench repair.
Corrective Actions
Main Fuse.
PCA
Power PCA
Troubleshooting