CAIRE 1000B Provider Technical Maunal page 85

A Procedure to replace the new Combo Power Manager Board and Battery Bridge Board:
1 Remove and Replace Combo Power Manager board set
WARNING:
1.1 Remove the Power Cartridge and unscrew the 4 screws holding the BBB pcb to the case (PN: 6974-312-SEQ) shown in Fig 63.
1.2 Remove the Unit cover as described in section, "Remove and Replace the Unit Cover".
1.3 Disconnect the 5 wire harnesses as shown in Figure 54. Remove the Battery Bridge pcb (BBB pcb) as shown in Fig 63 (Pull straight
up and off of the Power Manager pcb.)
Compressor Cable
Extrenal Power Cable
Personal Ambulatory Oxygen System Provider Technical Manual
Disconnect power supplies and remove Power Cartridge before
removing the unit cover. Do not touch exposed circuits during
maintenance without ESD protection.
Fig 63: Screws
Fig 64: Cable locations
Compressor Cable
Cooling Fan Cable
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