Important
note
Service Manual
PCB Replacement Procedures
7 - 32
3x3 UPS
Issue 2 - November 2001
7.9.4 - 3ph TL Control Logic Part Nº 0SDE0072 * (PCB Label: CS0072 Exx)
LD1
AC Power ON
CN1
TP2 TP4 TP6
(See
13.
)
Link TP30 to C30
(Ref. test on page 7-27)
CN1
CN1
CN1
U7
(EPROM)
TP11 TP14
(See
13.
)
TP12 TP9 TP10
(See
13.
)
TP15 TP16 TP17
(See
13.
)
P1
(Inv. output V adj.)
P2
(Conv. output V adj.)
P3
(UPS. output
±
15%)
Link
J1 to J5
Link
J8 J7 J6
Link
J9 J10
Link
J11 J12
Note: * This PCB must be replaced with one of the same power rating as the UPS.
UPS Rating
Replacement PCB Part Number:
EPROM U7 Identification:
10kVA
0SDE0072-10
QSR-10
15kVA
0SDE0072-15
QSR-15
20kVA
0SDE0072-20
QSR-20
30kVA
0SDE0072-30
QSR-30
1.
Power down the UPS and carry out the DC bus discharge routine.
2.
Gain access to the UPS power section by removing the top and side covers.
3.
Mark all connectors before removal.
4.
Note the position of the shorting links fitted to the PCB
5.
Disconnect connectors CN2, CN4 and CN5.
6.
Release the PCB StandĆOff mounts and remove the PCB from the Unit.
Replacing the PCB
1.
Replace the Control Logic PCB using the opposite sequence to the removal.
All replacement PCB's leave the manufacturer pre calibrated therefore no adjustment
should be necessary.
2.
When fitting a replacement PCB the on board links must be checked to ensure they are in
the correct position.