Replacing A Detector Module - Bosch FAS-420-TT Series Operation Manual

84 en | Installing the Aspiration smoke detector
Connecting a PC via the diagnostics cable
The supplied diagnostics cable connects the aspirating smoke detector ("DIAG" connection on
the motherboard) to the PC. The FAS‑ASD‑DIAG version is connected to the PC via a USB port,
earlier DIAG versions use a COM.
For details, please see the diagnostic software documentation.
5.8

Replacing a detector module

5
Replacing a detector module
Caution!
Switch off the unit before carrying out any connection work!
!
Do not connect or disconnect the detector module while switched on!
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2020.04 | 6.1 | F.01U.029.275
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DIAG
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Open the unit by carefully unlocking the housing cover's quick locks.
Carefully pull the display board connection cable from the motherboard ("DISPLAY"
connection) and remove the housing cover. Once the unit is installed, fix the cover with a
service clip.
Unplug the detector module's connector cable from the motherboard.
Spread the brackets provided for fixing the detector module slightly apart and remove the
detector module. Now spread the two brackets again. Carefully insert the new detector
module until you hear it click into place. Make sure that the used detector module is fixed
tightly and securely by the bracket by additionally pushing together the brackets by hand.
Attach the detector module to the connection on the motherboard: detector module 1 to
"HEAD 1", detector module 2 to "HEAD 2".
Reconnect the display board cable to the "DISPLAY" connection on the motherboard.
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HEAD1 HEAD2 DISPLAY
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Operation guide
Aspiration smoke detector LSN improved
1 USB port with
FAS‑ASD‑DIAG,
COM1/COM2 with earlier
versions
Shield
2 DIAG connection cable
3 FAS-420 motherboard
HEA D1 DIAG HEA D2 DIS PLA Y
Bosch Sicherheitssysteme GmbH