Datex-Ohmeda 7900 Service Manual page 67

4/Tests and Troubleshooting
Error Code Description of error logged
10047 Minimum system shutdown SIB
15V test failed
10048 Minimum system shutdown 15V
Local 10 VA test failed
10049 Minimum system shutdown display
voltage test failed
1004A Minimum system shutdown A/D
converter failure
1004B Minimum system shutdown CPU
test failure
1004C Minimum system shutdown flash
EPROM failure
1004D Minimum system shutdown exter-
nal RAM failure
1004E Minimum system shutdown display
RAM failure
1004F Minimum system shutdown soft-
ware watchdog failure
10050 Minimum system shutdown
sequential watchdog failure
10051 Minimum system shutdown CPU
clock too fast
10052 Minimum system shutdown CPU
clock too slow
1503-0151-000
Service Action
1. Reboot the system, if problem continues
measure +15V ± 5% on J3 pin 1 to pin 2. If
out of spec disconnect CPU and measure
again.
2. If within spec continue.
3. Replace SIB
4. Replace PSB
5. Replace CPU board
1. Replace PSB
2. Replace CPU board
1. Reboot system, if problem continues
measure EL display +14.5V (10-15V) volts
at J3 pin 18 to pin 11.
2.If out of spec, disconnect Display board.
Measure again. If within spec; replace Dis-
play board, continue
3. If still out of spec, disconnect CPU
board. Measure again. If within spec, con-
tinue.
4. Replace CPU board. Measure again. If
still out of spec, disconnect PSB, continue.
5. Replace PSB
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
Reboot the system, if problem continues
replace the CPU board
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