2.8.1 Remove the H7206-A Power and Logic Unit
Remove the H7206-A power and logic unit, held in place
by six screws. There are 11 cables. Mark the cables as
you remove them to simplify reconnection. If you cannot
disconnect some cables from the front of the machine,
remove the plenum at the rear of the cabinet to access the
connectors.
REMOVAL
1. Working from the front of the cabinet, disconnect the 17-01501-01 AC
input cable from J1. See
1
in Figure 2–18.
2. Disconnect the 17-01549-01 DEC power bus cable from J13 on the
H7206-A and from J1 on the H405 and discard. See
2
.
3. Disconnect the 17-01447-01 +300V bulk power cable from J3. See
3
.
4. Disconnect the 17-01446-01 +300V bulk power cable from J4. See
4
.
5. If the system had an H7231-N battery backup unit, disconnect the 70-
20396-2F cable from J6 and the 17-00962-01 cable from J12. See
5
.
6. Disconnect the 17-01570-01 blower cable from J2. See
6
.
7. Disconnect the 17-01498-01 XTC cable from J16. See
7
.
8. Disconnect the 17-01569-01 AC/DC OK cable from J11. See
8
.
9. Disconnect the 17-01497-02 power control/status cable from J14. See
9
.
10. Disconnect the 17-01666-01 control/status cable from J9. See
10
.
11. Working from the rear of the cabinet, use a flat screwdriver or a 1/4
inch nutdriver to remove the six screws securing the H7206-A.
12. Remove the four #10 screws that hold the cable bracket (70-25525-01)
in place. Save these screws.
13. Slide the unit out of the cabinet.
XMI-1 to XMI-2 Conversion
2–31
Содержание VAX 6000 XMI Series
Страница 82: ...A 6 VAX 6000 XMI Conversion Manual...