ACUSON X150 HELP!!!!!!!!!!!!!

Hello from Russia!

Please help.
At once I want to apologize for my English. I want to ask for you the help concerning X-150.
Malfunction TI has been revealed - this block incorrectly defines a submitted high voltage from the power unit. If a tester of pressure I see 100 Volt and +100 Volt stably TI defines them as -112 Volt and +114 Volt and naturally at once switches off the X-150 without possibility to come into the service menu.
For couple of days I have studied TI have drawn the electric scheme of module TI.
I replace on the TI module:
IRZ9210, IR210, LM339 (2) and I cant find to replace DG604W.
But it dont work:(

For now I need to know how to calibrate the measured high voltage by module TI. The calibration files is available in system are channels 32 and 35 (look more low).
How I can launch ZDG calibration? I cant enter to the shell:(
Whether probably to make so that tests on these two channels were not spent?
I.e. a tester of pressure I see-100 Volt and +100 Volt, and TI measures it with huge errors: (
One time I always replace this TI module but dont want to do this another one:(
I want to try repair it or calibrate.
I give information of repair TI module if it happens with your help.
Thx.

START DIAG A2D TEST 07/07/2010 13:30:17

Chan=35 Volts=112.36 ChanName="100VF - Pos 100 Volt Scan Head PWR" BRD=
Chan=32 Volts=-114.47 ChanName="-100VF - Neg 100 Volt Scan Head PWR" BRD=



And part of calibrating file:


START OFFSET CAL 03/19/2007 15:37:53
Median=2.0 Vmid=0x4F

Chan=32 Offset=3
Chan=35 Offset=2

END OFFSET CAL