4-72 Fault Isolation
C. Switch the system unit power off and remove the power supply screws and
slide the power supply out about 3 inches. Switch the power on and mea-
sure the voltages on the two power supply connectors as shown in
Figure 4-22 and Figure 4-23 (leave the connectors connected to the power
supply and measure the voltages through the rear of the connectors). If the
voltages are not present, go to Step D. If the voltages are present, go to
Step E.
D. Check Pin 24 on the large connector shown in Figure 4-22 for + 5 V dc. If
the voltage is not correct, replace the power supply.
If the voltage is correct at Pin 24, close the power-on switch. If you read
Pin 24 at ground, replace the power supply. If you still 5 volts,
replace the power-on switch. If the new switch doesn’t fix the problem, go
to Step E.
E. Either the power distribution cable, motherboard, or CPU board are defec-
tive. Check the power distribution cable for continuity. If the power distri-
bution cable is defective, replace it. Otherwise, replace the CPU board and
recheck the voltage test points. If the voltages are not present, replace the
motherboard.
5. If the voltages are present at the CPU board or power supply test points but not
within tolerance, perform the following steps
A. Power off the system unit and unplug the ac power cord from the power
supply. Replace the power supply.
B. If the problem persists, reinstall the original power supply and follow the
information in this step to check for power loading by a board. Power off
the system unit and remove one board other than the CPU board. Power
on the system unit and retest. If necessary, repeat this procedure for a sec-
ond board. If you replace a defective board, configure any switches or
jumpers the same as the original board.
C. If a board does not appear to have caused the problem, power off the sys-
tem unit and unplug the power cord from the power supply. Reinstall the
boards in their slots.
D. Unplug the internal mass storage power distribution cable from one of the
mass storage devices. Power on the system unit and recheck the voltages.
If necessary, repeat this step for each internal mass storage device. Re-
place the mass storage device if the voltages are within specifications.
end of procedure
Содержание Apollo 9000 400dl
Страница 1: ...Servicing the HPApollo 9000 Series 400 Workstations Order No A1630 90007 Manufacturing No A1630 90607 ...
Страница 4: ...iv VCCI Class 1 ITE Equipment VCCI Class 2 ITE Equipment ...
Страница 6: ...vi ...
Страница 22: ......
Страница 26: ...1 4 Product Overview Figure 1 1 HP Apollo Model 400t or Model 400dl Workstation ...
Страница 40: ......
Страница 42: ...2 2 System Controls Figure 2 1 Model 400t and 400dl System ...
Страница 54: ...3 4 Theory of Operation Figure 3 1 Model 400t System Block Diagram ...
Страница 55: ...Theory of Operation 3 5 Figure 3 2 Model 400dl System Block Diagram ...
Страница 56: ...3 6 Theory of Operation Figure 3 3 Model 400s Standard I O System Unit Functional Block Diagram ...
Страница 57: ...Theory of Operation 3 7 Figure 3 4 Model 400s DIO II System Unit Functional Block Diagram ...
Страница 58: ...3 8 Theory of Operation Figure 3 5 Model 400s ISA System Unit Functional Block Diagram ...
Страница 70: ...3 20 Theory of Operation Figure 3 6 Model 400s System Unit Power Distribution Diagram ...
Страница 74: ...4 4 Fault Isolation Figure 4 1 Main Flowchart ...
Страница 75: ...Fault Isolation 4 5 Figure 4 1 Main Flowchart Cont ...
Страница 76: ...4 6 Fault Isolation Figure 4 2 Model 400t and 400dl System Power LED Not On ...
Страница 77: ...Fault Isolation 4 7 Figure 4 3 Model 400s System Power LED Not On ...
Страница 78: ...4 8 Fault Isolation Figure 4 4 Domain Keyboard Problems ...
Страница 79: ...Fault Isolation 4 9 Figure 4 5 Problems with Display ...
Страница 80: ...4 10 Fault Isolation Figure 4 6 Diskless Node Partnering Problems ...
Страница 81: ...Fault Isolation 4 11 Figure 4 7 Problems with Winchester Disk ...
Страница 82: ...4 12 Fault Isolation Figure 4 8 Problems While Booting ...
Страница 83: ...Fault Isolation 4 13 Figure 4 9 Node Causes Network Problems ...
Страница 86: ...4 16 Fault Isolation Figure 4 10 Diagnostic Relationships for Domain OS Compatible Mode ...
Страница 99: ...Fault Isolation 4 29 Figure 4 13 HP UX Compatible Mode Main Troubleshooting Flowchart ...
Страница 100: ...4 30 Fault Isolation Figure 4 14 HP UX Compatible Mode Boot Flowchart ...
Страница 101: ...Fault Isolation 4 31 Figure 4 14 HP UX Compatible Mode Boot Flowchart Cont ...
Страница 131: ...Fault Isolation 4 61 Figure 4 17 System Unit Cover Removal Model 400t and Model 400dl ...
Страница 132: ...4 62 Fault Isolation Figure 4 18 Power Connections Model 400t and Model 400dl ...
Страница 148: ......
Страница 151: ...FRU Removal and Replacement 5 3 Figure 5 1 System Unit Cover Removal Model 400t and 400dl ...
Страница 152: ...5 4 FRU Removal and Replacement Figure 5 2 System Components Model 400t and 400dl ...
Страница 153: ...FRU Removal and Replacement 5 5 Figure 5 3 Rear View of the Model System Unit Model 400t and 400dl ...
Страница 161: ...FRU Removal and Replacement 5 13 Figure 5 10 Disconnecting Internal Cables from the CPU Board Model 400t and 400dl ...
Страница 181: ...FRU Removal and Replacement 5 33 Figure 5 26 Model 400s Front Door Removal ...
Страница 183: ...FRU Removal and Replacement 5 35 Figure 5 27 Model 400s Bezel Removal ...
Страница 193: ...FRU Removal and Replacement 5 45 Figure 5 34 Model 400s ISA Backplane Removal ...
Страница 195: ...FRU Removal and Replacement 5 47 Figure 5 35 Model 400s ISA Card Cage Removal ...
Страница 205: ...FRU Removal and Replacement 5 57 Figure 5 40 Model 400s Memory Board Removal ...
Страница 209: ...FRU Removal and Replacement 5 61 Figure 5 43 Model 400s ISA Center Wall Removal ...
Страница 211: ...FRU Removal and Replacement 5 63 Figure 5 44 Model 400s Standard ISA Motherboard Removal ...
Страница 213: ...FRU Removal and Replacement 5 65 Figure 5 45 Model 400s 3 Slot DIO II Card Cage Removal ...
Страница 215: ...FRU Removal and Replacement 5 67 Figure 5 46 Model 400s DIO II Center Wall Removal ...
Страница 217: ...FRU Removal and Replacement 5 69 Figure 5 47 Model 400s DIO II Motherboard Removal ...
Страница 221: ...FRU Removal and Replacement 5 73 Figure 5 49 Model 400s LED Board Removal ...
Страница 234: ......
Страница 236: ...A 2 FRU Configurations Figure A 1 CPU Board Configurations ...
Страница 240: ...A 6 FRU Configurations Figure A 5 Alternate 802 5 Network Controller AT Jumper Configuration ...
Страница 282: ......