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Step 10
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. Disconnect the power supply connector (J1) from the drive.
3. Disconnect the power supply connector (J2) between the power supply and the
4. Connect the power cable to both the 7210 DVD-RAM Drive and to the electrical
5. Press the power switch to turn on the power.
6. On the power supply connector J1 (see Figure 4), check the following:
Figure 4. Power Supply Connector J1
7. On the power supply connector J2 (see Figure 5), check that the +12V signal
Figure 5. Power Supply Connector J2
Are the voltages good, and does the power-on light come on and stay on?
NO
YES
Step 11
This step describes the reassembly process.
1. Press the power switch to turn off the power.
2. Unplug the power cable from the electrical outlet.
3. Make sure that the power supply connector (J1) is plugged into the DVD-RAM
4. Make sure that the power supply connector (J2) is plugged into the cooling fan.
5. Make sure that all other cables are properly connected, and that the wires are
cooling fan.
outlet.
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
falls between a minimum of +11.5 volts and a maximum of +12.6 volts.
Exchange the power supply. Refer to "Removing and Replacing the
Power Supply" on page 23.
Exchange the DVD-RAM drive. Refer to "Removing and Replacing
the DVD-RAM Drive" on page 22.
drive.
routed away from the cooling fan.
Chapter 2. Maintenance Analysis Procedures
15
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