Reconnect all the power supply assembly cables to the drives and the system board. Connect the signal and power cables to the rear of the optical drive. Got it, continue to print. About this manual Page 8 – Important information about replacing th The four screws cannot be removed from the heat sink and fan assembly. To replace the secondary hard disk drive, do the following: Tabs on the microprocessor socket cover bottom view Figure
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Remove the four screws 1 that secure the heat sink and fan assembly to the system board. Removing the front audio and USB assembly 5.
Lenovo plans to transition to RoHS compliance well before the implementation date and expects its suppliers to be ready to support the requirements and schedule of Lenovo in the European Union.
Furthermore, installing the wrong Lenovo drivers can make these problems even worse. To run the diagnostic program from the diagnostic disc that 723-74g created, do the following: Lift the microprocessor straight up and out of the socket. The battery contains lithium and can explode if not properly used, handled, or disposed of. Password considerations A password can be any combination of up to 16 1 to 16 alphabetic and numeric characters. Diskette drive in-use light remains on or does not light when drive is active.
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The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. Remove the old battery.
Eine verbrauchte Lithiumbatterie nur durch eine Batterie mit der Teilenummer 33F oder eine gleichwertige, vom Hersteller empfohlene Batterie ersetzen. Selecting a startup device on the Startup Device Menu does not permanently change the startup device sequence.
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Page 9 – Chapter 2. If the PCI card is secured in place by a retaining latch 1press the retaining latch downwards to release the PCI card from the latch.
The front fan assembly is attached to the chassis by four rubber mounts. Page 54 Test results Diagnostics test results produce the following error code format: If you are replacing an old adapter card, remove the adapter card being replaced before installing the new one.
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Reconnect all the power supply assembly cables to the drives and the system board. For security reasons, it is recommended to use a strong password that cannot be easily compromised. Repeat steps 1 through 3 until you find the failing device or adapter.
This manual also for: System board parts locations 1 Lnovo 2 Microprocessor fan connector 3 Memory slots 2 4 Thermal sensor connector 5 Diskette drive connector 6 pin power connector 7 Battery 8 Cover presence Intrusion switch Most clothing is insulative and retains a charge even when you are wearing a wrist strap. Safety information Page 10 Page 11 – Voltage-selection switch Page 12 – Handling electrostatic discharge-sensiti Page 91 – Locating connectors on the rear of your Completing the FRU replacement After replacing the FRUs, you need to reinstall any removed parts, reconnect and route any internal cables, close the computer cover, and reconnect any external cables, including telephone lines and power cords.
Start the Setup Utility lrnovo.
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Check the power-on switch for continuity. Page 44 Hardware Maintenance Manual This manual contains service and reference information for ThinkCentre 7253-74g types listed on the front cover.
Then, grasp the PCI card and gently pull it out of the slot. Trademarks The following terms are trademarks or service marks of Lenovo in the United States, other countries, or both: A Lwnovo Model Number: Installing the new optical drive 7.