iPOD Diagnostics

The tests as they appear on iPods with dock connectors running iPod software 2.0:

A.5 IN 1

B.RESET

C.KEY

D.AUDIO

E.REMOTE

F.LIN REC (FW ID)

G.SLEEP

H.A2D

I.OTPO CNT

J.RECORD (LCM)

K.CHG STUS

L.USB DISK

M.CHK SUM

N.DISPLAY (CONTRAST)

O.HDD SCAN

P.RUN IN



The tests on pre-dock iPods running iPod Software upto 1.3:

Note: It's back in version 1.1

Note: This function has been disabled in version 1.0.4

To enter Diagnostic Mode: Reset, at Apple logo press and hold "Previous", "Next", and "Action"

The Tests:A. 5 IN 1 - runs J through N

B. RESET - you guessed it, Reset

C. KEY - allows 5 seconds to press all buttons, if any don't respond or time expires it fails

D. AUDIO - apparently checks audio subsystem; a Pass returns "0X00000000 DONE" and if you have your earbuds in you'll get a beat.

E. REMOTE - when it fails to find the remote control it returns "RMT FAIL"

F. FIREWARE - apparently checks FireWire bus; a Pass returns "FW PASS"

G. SLEEP - goes to sleep; requires reset to wake (unless we didn't wait long enough)

H. A 2 D - apparently checks power subsystem; test unit returned "3.7V 0X000000E2 CHG OK FW 1 BAT 1" Update: running this test with while charging results in different voltage reading and FW 0I. OTPO CNT - scroll wheel response represented as hexadecimal

J. LCM - tests display, requires pressing "Action" to advance through 3 patterns

K. RTC - not sure what it does but the test unit returns "0X0000000C" Update: After restoring with iPod Updater 1.0 test unit returns "0X00000010" Update: Reader John B. suggests that this may be "Real Time Clock" and reader Jukka A.'s reports of variation in results along with our own observation lend credence to it.

L. SDRAM - memory; test unit returns "PASS"

M. FLASH - pretty sure it's the rom version; test unit returns "0X00005281" Note: this will be different depending on the build of the firmware installed

N. OTPO - our best guess: checks for "Action" down with no scroll wheel movement

--With Software 1.2 this test behaves differently: ScrollWheel iPods list the test as above, but it can not be activated. TouchWheel iPods list the test as "Wheel A2D" activating results in a screen with "Wheel A2D" and a bar, a reset (hold "Menu" and "Play") is required to exit.

O. HDD SCAN - hard drive; will take several minutes

P. RUN IN - runs continuous tests of chipsets (we think); LCM, RTC, SDRAM, OPTI, HDD (controller), TI1394