User guide

144
Billing Media Converter (BMC) (MD’d 4Q00)
(Bisync polling protocol)
A Chassis (Processor A)
B Chassis (Processor B)
6M62 — Central Processor Unit with Direct Memory Access (DMA)
6M63 — EPROM
6M64 — Extended Memory
6M65 — Error Control II
M609 — Error Control Jumper
6M60 — Quad SIO
6M66 — Disk Drive Interface
6M70 — Data Stream Interface (DSI)
6M68 — Bus Terminator (permanently mounted)
6M71 — Power Supply Assembly
6M72 — Disk Drive; AA = 72MB; BA = 140MB; CA = 30MB;
6M72AD/AE — Disk II Crossover
6M93 — Disk Crossover
6M84 — Power/Alarm Communication
6M56 — Fan Filter
Left side of BMC Chassis — looking from the rear
6M71
Power Supply
Assembly
6M72
Disk Drive
6
M
62
01
6
M
63
F
02
6
M
64
R
03
O
04
6
M
65
N
05
6
M
60
T
06 07
V
08
I
09
E
10
6
M
66
W
11
6
M
70
12
6
M
70
13
6
M
68
14
6M71
Power Supply
Assembly
6M72
Disk Drive
6
M
62
01
6
M
63
F
02
6
M
64
R
03
O
04
M
6
09
N
05
6
M
60
T
06 07
V
08
I
09
E
10
6
M
66
W
11
6
M
70
12
6
M
70
13
6
M
68
14
J9
J10
M
T
D
M
T
D
4-Channel Communication
J1 = Not Used
J2 = Software Download Port
J3 = Polling link
J4 = Maintenance TTY
J9 = Tape Emulation Card (TEC) 0 located
in slot 13; A and B Chassis (Assigned to the
J10 =Tape Emulation Card (TEC) 1 located
in slot 12; A and B Chassis (Assigned to the
A
C
H
A
S
S
I
S
B
C
H
A
S
S
I
S
the Magnetic Tape Drive
Magnetic Tape Drive
J1
J2
J3 J4
These packs are
located in the back
of the BMC