Si Can't Power On - Sony Ericsson K800 Electrical Repair Manual

SI - Can't Power On
Symptom:
Before doing any electrical / mechanical repair on "Can not Power on", fi rst secure that the problem is not
caused by software!
Attach a charger; if the charging indicator LED is blinking only approx. 4-7 times before it stops, the prob-
lem is caused by software!
Important: You might have to try attaching the charger up to 5 times in order to be sure you don't have
symptom.
IF THE UNIT'S CHARGING INDICATOR BLINKS ONLY APPROX. 4-7 TIMES YOU SHALL NOT RE-
PLACE ANY COMPONENTS!
The problem is caused by corrupt software.
Please see solutions Pre-confi g (1) and Pre-confi g (2) below for this type of problems.
Pre-confi g (1) (see old SI for more details)
ONLY applicable if you have a K800 or K790 produced 2006 otherwise go directly to Pre-confi guration 2
section.
Log on to EMMA III as usual.
Make sure you that there is at least 1/3 left of the battery capacity, loss off power during below will destroy
the unit!
You should press "5" fi rst, keep it pressed and then press the "2" and keep it pressed.
Thereafter while pressing "2" and "5", you attach the USB cable.
When information box appears in the Service Client window, release the keys.
Select "Yes" and the Pre-confi guration will proceed as normal.
If this doesn't help proceed to pre-confi g (2) below:
APPENDIX

SI Can't Power On

Pre-confi g (2) fi x for "Inaccessible GDFS"
Require access to Activate in Emma III.
Instructions:
1) Connect the phone to EMMAIII with a USB cable while pressing the "C" button.
1a) If EMMAIII is showing a USB icon, apply normal trouble shooting.
1b) If you can't see a USB icon, continue with 2 below.
2) Remove and re-insert the battery and make sure Emma III is working online. Press "5" fi rst, keep it pressed
and then press the "2" and keep it pressed. There after and while pressing "2" and "5" attach the USB cable to the
phone.
2a) If there is no USB icon in Emma III you shall apply normal trouble shooting.
2b) If you now can see a USB icon in Emma III followed by below information box:
Press No (this box is needed to be able to support both variants of pre-confi guration)
If you now get the box with "Pre-confi guration 2" script below, you should run this script.
SEMC Electrical Repair Manual
K800 - K810
1202-3085 rev. 2 114 (121)