Service manual

INSTALLATION
2-6
Revised February 1997
Part No. 001-9750-005
program special configurations, refer to the informa-
tion which follows. The location of these switches is
shown in Figure 2-4.
NOTE: In the following information, an asterisk (*)
indicates the factory default setting.
IIC Driver U102 Configuration (S100 1-4)
S100
1 234
U102 out* On Off On Off
U102 in Off On Off On
S100, 1-4 are used to switch IIC bus driver U102
in or out of the circuit. Currently, this driver is not
used, so it is always switched out.
Control Unit Address Programming (S101 5, 6)
S101
Address 5 6 R133
110* Off Off In
Currently, address information is not used, so any
address can be programmed.
NOTE: R133 should always be “in” because if it is
“out” and TP100 is brought low to enter the setup
mode, the control unit EEPROM memory is erased.
Volume Control Configuration (S100 5, 6)
S100
5 6
Remote (standard)* Off On
Disabled (dual control) Off Off
Local On Off
S100, 5 and 6 select which unit controls the
volume. With a remote-mount transceiver, the
“Remote” configuration is selected so that the control
unit volume control adjusts the volume of the internal
or external speaker (see Section 2.5.4).
When a control unit is used with a front-mount
transceiver to provide dual controls, “Remote” or
“Disabled” is selected. When “Remote” is selected,
the transceiver and control unit volume controls
operate in parallel (the volume level is the sum of the
levels set by both controls). When “Disabled” is
selected, only the transceiver volume control sets the
volume level. In the dual control configuration, the
levels of the transceiver and control unit internal
speakers are the same.
The “Local” setting provides a locally controlled
audio output that can be routed to a separate audio
amplifier. However, in the current configuration, this
setting cannot be used because the signal is routed to
the microprocessor and improper operation will result.
LCD Viewing Angle (S101 4)
S101-4
Settable by menu mode* Off
Fixed viewing angle On
S101-4 programs if the LCD viewing angle can
be set by the menu mode or is a fixed setting. If it is
settable by the menu mode, that mode and the “VIEW
ADJUST” parameter must be enabled by transceiver
programming. Any change is then permanently stored
in the control unit EEPROM memory. The displays of
the transceiver or other control units are not affected
because they can only be changed locally.
If “Fixed” is programmed, the factory default
viewing angle is selected on power up. This default
setting can be changed by the Setup Mode (see Section
2.5.2). If a change is made by the menu mode with
“Fixed” programmed, that setting is retained only until
power is turned off.
Backlight On-Off (S101-3)
S101-3
Settable by menu mode* Off
Fixed (factory setting = on) On
S101-5 programs if the backlight can be turned
on and off by the menu mode or is fixed. Operation is
similar to the LCD viewing angle described in the
preceding section. If “Fixed” is programmed, the
factory default setting of “on” can be changed by the
setup mode.