TD 91684GB
16 April 2015 / Ver. G
Installation Guide
T942C and T942C/2 Central Unit
19
Flashing indicates a fault as follows:
Color ON OFF Fault
red 100 ms 800 ms Incorrect software licence
*
green 800 ms 100 ms Parameter fault
red 1 s 1 s Watchdog reset
4 If everything seems to be OK but the function ind
icator still blinks, the fault is
probably located outside the T942C module. Check the other system units according
to the document System Installation or contact your dealer.
5 If section 4 on SW02 is set to ON it must be switched to OFF.
6 Set section 3 on SW02 to ON. Restart T942C by pressing push button S01. The
paramete
r list will now be read from the non-volatile memory and any new
parameter list can be loaded into the non-volatile memory from a PC equipped with
PDM.
7 Replace the cover.
When all other units are installed, perform the sys
tem test described in the
System Installation document.
1.6 Circuit Board Replacement
Figure 24. Circuit board replacement.
1 Disconnect the power supply.
2 Remove the cover, see 1.4.2 Opening the Housing on
page 8.
3 Lift off the screw connectors from the
circuit board (1).
4 Press the four holding clips (2) and release the circuit board (3).
5 Install the new circuit board in the case, make su
re it clicks into the position.
6 Set all switches and jumpers as they were on the old circuit b
oard.
7 Replace the connectors.
8 Reinstall the applicable software.
9 Check installation according to 1.5 Installation Test Procedure on
page 18.
10 Replace the cover.
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