Service and Maintenance 8
Calibration Reference
E364xA User’s and Service Guide 215
3 Connect the power cord and turn on the calibration mode
by holding down the Calibrate key as you turn on the
power supply and hold down the key until you hear a
long beep. Be careful not to touch the power line
connections.
4 Apply a short between the two exposed metal pads on
JP3
[1]
(located near U17). Refer to “Component locator
diagram for the digital board assembly — top” on
page 227 and “Component locator diagram for the digital
board assembly — bottom” on page 228.
5 While maintaining the short, move to the security code
and enter any unsecure code in the calibration mode. The
power supply is now unsecured.
6 Remove the short at JP3
[1]
. (An error occurs if not
removed.)
7 Turn off and reassemble the power supply.
[1] For serial MY53xx6xxx, apply the short at JP12 (located near U10). Refer to
“Component locator diagram for the digital board assembly — top (serial
MY53xx6xxx)” on page 232 and “Component locator diagram for the digital
board assembly — bottom (serial MY53xx6xxx)” on page 233.
Now you can enter a new security code. Ensure that you take note of the
new security code.
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