user manual

ND-20292
CHAPTER 2
APRIL, 1990
Switch labeled MELODY (SW31 is used to select one of
two melodies from the internal MOH music chip,
mounted on the TSW-E ETU. VRl is used to adjust the
volume of the melody provided by the melody chip.
RCA hono plug EP provides External Pa e common
audlb e and is used for connection of a 3 local f
amplifier for external paging.
y provided
RCA phono plug MOH is used for the connection of an
external MOH source, ifneeded.
The TSW-E ETU must be installed in the TSW slot in
the ESE-32B-1 CCU.
D. TSW-EB ETU
The TSW-EB ETU provides the same services as the
TSW-E ETU. The TSW-EB ETU has one green LED
which flutters during normal operation and is
equipped with an additional connector (CN3) for the
interfacing with the fourth cabinet’s MMC-E ETU via
the CBL-E expansion cable unit.
E. MMC-E ETU
The MMC-E ETU contains one switch, two LEDs, one
cable and one connector. Switch 1 (SW11 is the reset
switch. Depression of this switch causes all service
associated with the CCU to be interrupted. This
switch should not be used in an operating system
unless absolutely necessary.
The LEDs indicate module memory working status.
Under normal operating conditions, they flutter to
indicate memories being activated. When SW1 is
depressed, the LEDs momentarily turn OFF. When
the CCU is disabled, the LEDs are constantly OFF.
The flat cable must be connected to either connector on
the TSW-E( ) ETU or another MMC-E ETU. When it
is connected to another MMC-E ETU, the cable of that
MMC-E ETU must be connected to the TSW-E ETU
(See Figure 200-19).
The MMC-E ETU must be installed in the MMC slot of
an ESE-32E-1 CCU.
240.5 BASIC INTERFACE ETUs
Although the system scans all slots to detect which
devices are installed, it must be noted that this is only
performed by the CPU-E( 1 ETU during initial
powering up of the system, or after a first
initialization. At this time, all busy switches, on all
interface ETUs, must be set to the ON position.
Figure 200-19 4 Module CCU Layout (Floor Mounted)
a. Prior to inserting (or removing) an ETU into
an interface slot, as determined by the Job
Specification, ensure the busy switch (SW11 on
that ETU is in the OFF position.
b. Insert the ETU into a vacant interface slot,
ensuring the components are on the right side.
c. Set the busy switch (SWl) on that ETU to the
ON position.
Each basic interface ETU has a busy switch (SWl), a
power LED (Green) and may have two or four status
LEDs (Red).
Setting the busy switch (SW11 to the ON position, after
inserting the ETU, causes the power LED to light.
The red LEDs indicate the status of circuits. Each
LED ON indicates that its associated circuit is in use.
Refer to Table 200-17, Interface ETU LED and Switch
Reference.
Thereafter, if any device is installed and the system is
not turned off or a first initialization is not performed,
you must inform the system (via programming) of the
location and type of device added.
type. Each switch is associated with a circuit.
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