Casio Cassiopeia E-125 Service Manual And Parts List page 54

8-4-2-8. Setting (Adjusting) DC voltage to AD converter
Refer to ADJUSTMENT in this manual concerning this voltage adjustment.
The following operation are not only for Check, but also for setting (adjusting) for DC voltage to AD
converter in CPU.
When calibration for touch panel, battery voltage detection and so on are not correctly performed, try to
check and perform these settings (adjustments).
It is recommended to prepare two DC voltage stabilizers for Main and sub (back up) power supplies.
Important
These settings (adjustments) for the main PC
Board Assembly has not been performed in the factory.
Therefore, be sure to perform this setting (adjustment)
whenever you replace the main PC Board Assembly.
1. While supplying powers as shown to the right,
display Main Menu for the operation check.
* Remove AC Adapter.
* Slide the battery cover switch to LOCK position.
2. Make the voltage power supply added to the main
battery terminal 4.2V ± 0.05V.
Then, make the voltage power supply added to the
back up battery terminal 2.7V ± 0.05V.
If turning off the unit power, stop to supply power
for the back up battery at first, then for the main
battery. After performing Initial Setup, display
Main Menu for the operation check again.
3. Tapping 9 voltage Write, the following display
appears.
*** <AD Revision Value Write> ***
<Max Level Write>
Voltage Write-> Contacts Key
Escape -> ON Key
4. Pressing Contacts button, the following display appears.
*** <AD Revision Value Write> ***
<Max Level Write>
AD Value Read!
<Min Level Write>
Voltage Write-> Contacts Key
Escape -> ON Key
If the unit can not read the voltage 4.2V correctly, "No Good. Please retry!!" message will appear.
Note that the unit can not be progressed in the next stage whenever this message appears.
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