Table 7.3 System Level And Field Troubleshooting - Fujitsu MJA2500BH - Mobile 500 GB Hard Drive Product/Maintenance Manual

Table 7.3 System level and field troubleshooting

Check to be made
Confirm that the DC power voltage is within ±5% of the standard value.
DC power voltage
When measured at +5 V power pins P8 or P9 and GND pins P4-P6, P10,
level
or P12 of the power supply connector, the +5 DVC must be 4.75 to 5.25
VDC.
Refer to Sections 3.3 and 5.1.4.
DC power ripple Check that the maximum ripple at +5 VDC power is less than 100 mV.
noise
SATA Interface Confirm that the SATA interface at the drive is properly connected with
Connection
the host receptacle.
(Including a
Connection of
Power Segment)
System cable Confirm that all cable connections throughout the system correctly
connected.
System diagnostic To further isolate the failure, if it can be done, execute the system level
test diagnostic routine described in the host computer manual.
Intermittent or Check the AC voltage level at the power supply section and recheck the
indefinite error DC voltage level at the disk drive power supply connector.
If the AC voltage level is abnormal, or if there is a lot of electrical noise,
notify the user.
If the DC voltage level is unstable, replace the power supply section.
If possible, replace the disk drive. If the fault remains, the disk drive is
not the case. For suggestions to isolate the failure further, refer to the
hardware and software manuals provided with the system.
C141-E293
7.3 Troubleshooting Procedure
Recommended work
7-13