Diagnostic Mode Tests for newer iPods:

NTF
Memory
IO
Power
Accessories Test
SysCfg
Reset

Tests Expected result :
(To cancel a test, just press the MENU button)
NTF:

Run the Autotest and it will do the following:

* Graphic self test
* SDRAMQuicktest
* Checksum
* RTC
* USBtest
* Keytest
* Wheeltest
* Headphonedetect
* Accessory Test
* ChargeADC
* Backlight (brightness)
* Color

Memory:


The Memory tests include diagnostic procedures for your iPod's SDRAM, IRAM and FLASH memory.

SDRAM: The RAM memory test. The SDRAM Fulltest will take several minutes. A successful pass result is "SDRAM OK."

IRAM: Not sure exactly what this test does. It takes several moments to load before running a quick test and rebooting your iPod.

FLASH: This test will do a checksum test of your iPod's flash memory.
IO:

Comms: This tests the communication ports of your iPod including USB, FireWire and Remote. If the Remote is not connected to your iPod at the time of the test, you can expect a NG (no good) for the HP (headphone-port).

Wheel: This option has two tests, Keytest and Wheeltest. Push each button once to pass the Keytest. The Wheeltest just gives you a coordinate of where your finger is on the Click-Wheel.

LCD: This option has two tests, Backlight (0 to 255; 128 is the default) and Color. Much like a VRAM test, the Color test will run through a series of colors, patterns and gradients.

HeadphoneDetect: This test checks the Hold Switch and Headphone port.

HardDrive: This option has four tests.

* HDSpecs will tell you everything from hard drive temperature to serial number.
* HDScan scans your iPod's hard drive. This is a great way to see if you have a healthy iPod and if your hard drive is fragmented. This test will take a few minutes so be patient.
* HDSMARTData returns SMART data for professional repair applications and personnel.
* HDRW tests the ability of your hard drive to RW (read and write data). A FAIL result probably means you need to get your hard drive replaced.

Audio: This option has two tests. Playback plays an audio sample to make sure your iPod can produce sound. MIC tests your iPods ability to record audio.
Power:


A2DTests: This test has multiple sub tests.

* PhilipsID checks the power system of your iPod
* A2D lists a series of A2D (analog to digital) tests.

Status:


Status displays the status of several of your iPod's key systems.

* Sharp: LCD screen
* HP: headphones. Are they connected? [0 = no, 1 = yes]
* FWPWR: FireWire power. Is your FireWire cable charging your iPod?
* USBPWR: USB power. Is your USB cable charging your iPod?

SysCfg:


SysCfg: System Configuration.

This lists your iPod's hardware version, serial numbers, and part number.