Siemens Servo Screen 390, Service Manual, Page: 23 / 49

Servo Screen 390
E382 E394E 061 01 02 02 23
Siemens-Elema AB
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3. Disassembly and assembly
Fan
• Remove the PC boards as previously
described.
• Remove the two nuts (1) and washers (2)
holding the fan bracket and lift off the
fan (3).
Assembling the computer
section
The procedure for assembling the computer
section is the reverse of the disassembly
procedure described above.
Normally the screen area will light up
immediately when the power switch is set
to On. If the screen area is not lit up until the
Startup display appears and the startup beep
sounds, this may be due to an undefined
brightness value stored on the Adapter
board. This may be the case after exchange
of Adapter board PC 1663.
Adjust the brightness setting as follows:
• Set the power switch to On and wait until
the Main menu icons are visible.
• Select SYSTEM DATA and CHANGE SET-
UP.
• Change the Brightness level (at least one
step).
• Select CHANGE EXIT and SAVE SET-UP.
Save the new setting.
• Set the power switch to Off and wait a
few seconds.
• Set the power switch to On and check that
the screen area is lit up immediately.
• If required, repeat the steps above to set
the Brightness level to the previous value.
S
S-040X
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