Instruction Manual

38
Service & Parts Manual original Instructions
Part Number 32Z3812 US
Issue 1
SPARES &
REPLACEMENT
21
3
4
SRB & BTS Circuit Boards19
SRB replacement19.1
Disconnect and isolate the oven from the 19.1.1
electricity supply.
Allow the oven to cool down.19.1.2
Remove the oven casing.19.1.3
Ensure that the High Voltage Capacitor is 19.1.4
discharged before commencing work.
Taking anti-static precautions, disconnect all 19.1.5
connections on the SRB.
Remove the PM (Personality Module) from the 19.1.6
SRB and place safely aside.
Release retaining screws and remove the SRB.19.1.7
Replace SRB and secure retaining screws.19.1.8
Reconnect all connections to the SRB, for 19.1.9
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.
Ret 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 replacement19.2
Disconnect and isolate the oven from the 19.2.1
electricity supply.
Allow the oven to cool down.19.2.2
Remove the oven casing.19.2.3
Ensure that the High Voltage Capacitor is 19.2.4
discharged before commencing work.
Remove the top front panel.19.2.5
Taking anti-static precautions, disconnect all 19.2.6
connections on the BTS.
Remove the PM (Personality Module) (3) from 19.2.7
the BTS and place safely aside.
Release the four retaining nuts and remove 19.2.8
the BTS assembly (4).
Ret the PM removed from the old BTS to the 19.2.9
new BTS. Refer to the following PM replacement if a
new PM is tted.
Replace the BTS assembly and secure with 19.2.10
the retaining nuts.
Reconnect all connections to the BTS, for 19.2.11
details see ‘BTS Terminal Locations’ (Electrical Circuits
section).