Pcb Replacement Procedures; Auxiliary Dc Dc Converter Part Nº Osde0070 (Pcb Label: Cs0070 Exx) - Powertronix Quasar Service Manual

PCB Replacement Procedures

7.9 - PCB Replacement Procedures
7.9.1 - Auxiliary DC DC Converter Part Nº 0SDE0070 (PCB Label: CS0070 Exx)
F2
(DC ve Input 1A)
PM1
F1
(DC +ve Input 1A)
PM2
PM2 pin 1 to 6
(See 13.)
Replacing the PCB
Important
All replacement PCB's leave the manufacturer pre calibrated therefore no adjustment
should be necessary.
note
7 - 28
R36
P1 (500Vdc)
(See 13.)
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. Disconnect Connector PM1 and PM2.
5. Release the PCB Stand Off mounts and remover the PCB from the Unit.
1. Replace the DC DC converter PCB using the opposite sequence to the removal.
2. Refit all covers removed and return the UPS to its normal operating condition.
Service Manual
U2A pin1 R39
(See 13.)
(See 13.)
P2 (320Vdc)
R37
(See 13.)
P3 (500Vdc)
3x3 UPS
Issue 2 - November 2001