Dorma MUXD 19 - 5 Maintenance; Maintenance and Troubleshooting; RS232 Service Interface; Fuses and Back-Up Battery

MUXD 19" (B6L 19")
5. Maintenance
2121
5.1 Maintenance and troubleshooting
5.1.1 RS232 service interface
1)
The B6L 19" has an RS232 service interface on the front
bezel.
The connection to a PC can be made using a null modem
cable (item No. 1900070520095) with 9-pin SUB-D plug
connectors.
5.1.2 Fuses and back-up battery
A - Primary side with a 500 mAT microfuse
B - 10 AT microfuse on power supply unit module
C - 3.15 AT microfuse on power supply unit module
D - 2 AT SMD fuse on TP4 basic card
1)
E - Lithium back-up battery
1)
1) B6L 19'' version only
1 6 2 RX_B6L 7 3 8 4 9 5
TX_B6L GND Housing
A
C
E
D
B