M.S. Shin has posted this at dpreview:
[Usual word of caution: you can seriously screw up your camera if you fool around with the settings!]
I have big news!
If your K10D have problem with focus, you can adjust it yourself.
Someone in Korea figured it out himself.
He is not a employee of Pentax or related company.
He just found out by trial-and-error with key-set.
Of course, You yourself is responsible for doing something scribed below.
Here's How-to-adjust-focus.
1. Your K10D' firmware version must be 1.10.
2. Test shot for focus trouble.
3. Turn the camera OFF.
While pressing [PLAY]+[OK], Turn the camera ON.
You can see firmware version on LCD screen.
4. Firmware version is appeared,
then press [Fn]->[Fn]->[INFO]->[MENU] within 5 seconds.
You get service menu!!!
5. by pressing [right key]
,Make DEBUG MODE to DEBUG MODE .
then press [OK].
(save and LCD will be black out)
6. Press [MENU] and go to SETUP tab.
then, Press [Up key], you can see TEST MODE.
7. Select AF TEST menu. now you have AF correction menu.
If you have Front-focusing, reduce the value.
If you have back-focusing, increase the value.
after adjust some value, press [OK] and quit out of setup menu.
8. TEST for focus, find out that focus is correct.
(repeat this from 6 for correct focus.)
9. Go to service menu(step 3,4).
Make DEBUG MODE to DEBUG MODE .
then press [OK].(save and LCD black out)
10. Go out and enjoy nice photos!!!
And David Savage of pdml listed out the menu options:
DEBUG MODE <EN/DIS>
CARDDOOR OPEN <EN/DIS>
WRITE CARD VNDR <EN/DIS>
SCRIPT EN MODE <EN/DIS>
USR DAT CLEAR
DUMMY RELEASE
SWITCH TEST
RELEASE AGING <AUTO/MAN>
LENS COM CHECK
AF PINT DISP
DSP ADJ DAT READ
DSP ADJ DAT WRITE
EEPROM LOAD from FILE
EEPROM SAVE to FILE
EEPROM READ/WRITE
CPU ROM SAVE to FLE
DSP ROM SAVE to FILE
LENS ROM LOAD from FILE
LENS ROM SAVE to FILE
LENS ROM READ/WRITE
BOARD VER
DUST REDUCTION TEST
DSP CHIP VER
When you set the debug mode to <EN>, when you go into the setup menu
there is now a "Test Mode" section with:
- Capture/System Test
- AF Test
- Strings Disp(lay) Test
This should be very useful for those who have FF or BF problems.