Siemens Servo Screen 390, Руководство по обслуживанию, Страница: 39 / 49

Servo Screen 390
E382 E394E 061 01 02 02 39
Siemens-Elema AB
Malfunction
Action
It is not possible to establish communication
between Servo Screen 390 and an SV 300/
300A or an SV 900C/E. • Check/replace the communication cable.
• Try to communicate with another
ventilator (on SV 900C/E, first make sure
that the SCM 990 is properly configured).
• If none of the above, replace PC 1662/
PC 1835.
The brightness of the display can not be
adjusted. • Check the power cable from PC 1663 to
the internal display.
• If not the above, replace PC 1663.
• If none of the above, replace the display.
The control knob does not work properly. • Operate the Servo Screen 390 with a
connected keyboard:
– If it works with the connected keyboard:
1. Replace the control knob.
2. If not the above, replace PC 1662/
PC 1835.
– If it does not work with the connected
keyboard:
1. Replace PC 1662/PC 1835.
The start-up logo does not disappear and:
– the message “L
OADING
S
OFTWARE
“ does not
disappear within 30 s or
– the message “S
OFTWARE
M
ISSING
“ appears.
• Replace the software memory card.
• If not the above, replace PC 1662/PC 1835.
The display is illuminated during start-up, but
after the start-up beep it goes black or shows
a deformed image. A connected CRT display
shows a normal start-up sequence and
image. • Check/replace the signal cable between
PC 1663 and the display.
• If not the above, replace the display.
5. Troubleshooting
5