21
3
4
SRB & BTS Circuit Boards20
SRB replacement20.1
Disconnect and isolate the oven from the 20.1.1
electricity supply.
Allow the oven to cool down.20.1.2
Remove the oven casing.20.1.3
Ensure that the High Voltage Capacitor is 20.1.4
discharged before commencing work.
Taking anti-static precautions, disconnect all 20.1.5
connections on the SRB.
Remove the PM (Personality Module) from the 20.1.6
SRB and place safely aside.
Release retaining screws and remove the SRB.20.1.7
Replace SRB and secure retaining screws.20.1.8
Reconnect all connections to the SRB, for 20.1.9
details see ‘SRB Terminal Locations’ (Electrical
Circuits section).
Ensure the thermocouple negative (-)
1
connection (white) and positive (+) connection
(green) are tted the correct way round or the
oven temperature readings will be wrong.
Ret the PM removed from the old SRB to the
2
new SRB. Refer to the following PM replacement
if a new PM is tted.
BTS replacement20.2
Disconnect and isolate the oven from the 20.2.1
electricity supply.
Allow the oven to cool down.20.2.2
Remove the oven casing.20.2.3
Ensure that the High Voltage Capacitor is 20.2.4
discharged before commencing work.
Remove the top front panel.20.2.5
Taking anti-static precautions, disconnect all 20.2.6
connections on the BTS.
Remove the PM (Personality Module) (3) from 20.2.7
the BTS and place safely aside.
Release the four retaining nuts and remove 20.2.8
the BTS assembly (4).
Ret the PM removed from the old BTS to the 20.2.9
new BTS. Refer to the following PM replacement if a
new PM is tted.
Replace the BTS assembly and secure with 20.2.10
the retaining nuts.
Reconnect all connections to the BTS, for 20.2.11
details see ‘BTS Terminal Locations’ (Electrical Circuits
section).
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