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QUESTION 37
You have just completed replacing a logic board in an iMac (Flat Panel) and are reassembling the computer. Which of the following special tools is recommended during this reassembly?
A. CRT discharge tool
B. Torque screwdriver
C. Spring tensioning tool
D. Jumper adjustment tool
Correct Answer: B QUESTION 38
In the component isolation technique, if you do not get a startup chime and/or a flashing question mark, you check the components of the minimal system by _________.
A. Visually inspecting them for damage.
B. Replacing them with known-good parts in any order.
C. Adding more known-good parts in a specified order.
D. Replacing them with known-good parts in specified order.
Correct Answer: D
QUESTION 39
When practicing component isolation, which ONE of the following components would NOT be a part of a minimal system configuration for a Power Mac G4 (Mirrored Doors)?
A. SDRAM
B. Speaker
C. Hard Drive
D. Logic Board
E. Power Cable
F. Power Supply
G. Front Panel Board
H. Processor with Heatsink
Correct Answer: C
QUESTION 40
The basis for the component isolation troubleshooting technique is an understanding of ______ within computers.
A. power flow
B. software data flow
C. firmware data flow
D. processor instruction flow
Correct Answer: A
QUESTION 41
When setting up a minimal system using the component isolation technique, you start with only the components necessary to_____.
A. Boot the system into Mac OS 9.
B. Boot the system into Mac OS X.
C. Boot the system into Open Firmware diagnostics.
D. Hear a boot chime and/or see a flashing question mark on a display.
Correct Answer: D
QUESTION 42
You are using component isolation to troubleshoot a Power Mac G4 (Quicksilver). You have already reduced the computer to the appropriate minimal configuration. You have just installed a known-good video card and have attached a known-good external VGA display to it. Upon startup, you see a flashing question mark on the VGA display, but you hear no startup chime. What signals or power could be missing to cause this problem?
A. Timing signals to the processor through the logic board.
B. Power to the memory subsystem through the logic board.
C. Backup battery voltage to the PMU through the logic board.
D. Audio signals to the speaker through the front panel board.
Correct Answer: D
QUESTION 43
What is the BEST way to properly ground an ESD workbench mat?
A. Attach the mat to the unit being serviced.
B. Connect the mat to a grounded electrical outlet.
C. Connect only the wriest strap and cord to a grounded electrical outlet.
D. Connect the wrist strap and cord only to the mat.
Correct Answer: B
QUESTION 44
What humidity level should be maintained to ensure an ESD-safe environment?
A. 25%-40%
B. 50%-75%
C. 75%-90%
D. 90%-100%
Correct Answer: C
QUESTION 45
Which FOUR of the following actions helps reduce the risk of damage from ESD? (Choose four)
A. Ground yourself and the equipment you are working on.
B. Always place ESD-sensitive components on metal surfaces.
C. Handle all ESD-sensitive boards by the connectors, not the edges.
D. Use static-shielding storage bags for ESD-sensitive components.
E. Do not bring plastic, vinyl, or foamed polystyrene near ESD-sensitive components.
Correct Answer: ABDE
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