IBM 220, Руководство по обслуживанию

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Step 10: Power Supply Voltage Level
This step checks the power supply voltage levels as the possible source of the
problem.
1. Press the power switch to turn off the power.
2. Perform the cover removal procedure. Refer to “Removing and Replacing the
Cover” on page 28.
3. Disconnect the power supply connector (J1) from the drive.
4. Disconnect the power supply connector (J2) between the power supply and the
cooling fan.
5.
Connect the power cable to both the 7206 Tape Drive and the electrical outlet.
6. Press the power switch to turn on the power.
DANGER
Dangerous voltage being measured. (RSFTD005)
7. On the power supply connector J1 (see Figure 8), check the following:
v
The +12V signal falls between a minimum of +11.5 volts and a maximum of
+12.6 volts
v
The +5V signal falls between a minimum of +4.8 volts and a maximum of
+5.25 volts
8. On the power supply connector J2 (see Figure 9), check that the +12V signal
falls between a minimum of +11.5 volts and a maximum of +12.6 volts.
Are the voltages good?
NO Replace the power supply. Refer to “Removing and Replacing the Power
Supply” on page 32.
YES Replace the drive. See “Removing and Replacing the Drive” on page 30.
Note: If the media is still in the drive being replaced, it can be removed
manually. See “Manually Removing a Tape Cartridge” on page 35.
Figure 8. Power Supply Connector J1
Figure 9. Power Supply Connector J2
Chapter 3. Maintenance Analysis Procedures
23