Service manual

OPERATION
3-32
April 2001
Part No. 001-9800-203
release the PTT switch, and you may partially hear this
tone.
Proceed Tone - This tone consists of two beeps and it
tells the landside caller when to enter the five-digit
number specifying the mobile being called. Dialing of
this number must be started within 5 seconds of
hearing this tone, and a tone-type telephone must be
used.
3.10.3 DISPLAY MESSAGES
Low Tier Display Messages
Error conditions are indicated by the LED
display as follows:
“–” - If only the middle segment in the right seven-
segment number display is on, it indicates that the
synthesizer is unlocked. The transceiver is nonfunc-
tional until lock is re-established.
“U” - If an uppercase “U” is displayed in the seven-
segment display, it indicates that the transceiver is on a
system/group that is not programmed for any of the
displayed channel numbers. Unassigned system/
groups are not permitted with low tier models. Refer to
Section 4.6.5 for more information. If making data
transmissions, this indicates that either no data group
or no voice group is available (see Appendix A.4.1).
“17” - This indicates a type error. It is displayed after
programming to indicate that the transceiver is
programmed with a file type intended for a different
model or tier. Reprogram the transceiver with the
correct file type. If this problem persists, flash ROM
U108 or microcontroller U101 may be defective.
“19” - This indicates a programming error. Try repro-
gramming the transceiver. If the problem persists,
flash ROM U108 may be defective.
High Tier Display Messages
The following messages appear in the display of
high tier models to indicate various operating modes
and error conditions. Selected system/group informa-
tion appears in this display during normal operation
(see Section 3.4.4).
BLK CALL - Indicates that the call is being received
on an LTR block ID code (see Section 3.8.3).
BUSY - Indicates that the LTR radio system is
currently busy (see “Busy Tone” in Section 3.10.1).
CG ON or OFF - Indicates the Call Guard squelch
was just enabled or disabled by the CG option switch
(see Section 3.9.5).
DATA GRP - Indicates that no valid voice group can
be found for the transmission (see Appendix A.4.1).
DSBL BSY - Indicates that the transmitter is disabled
by the conventional Transmit Disable On Busy feature
(see Section 3.9.2). It also indicates that the transmitter
was keyed while receiving an LTR call.
EMERGNCY - Indicates that the emergency switch
has been pressed (see Section 3.5.6).
FCN - Indicates that the function select mode is
selected by the FCN switch (see Section 3.5.8).
GSCN DIS - Indicates that an attempt was made to
delete a group from the scan list with group scanning
disabled (see Section 3.7.2).
IN QUEUE - Indicates that the call has been placed in
queue by the LTR Busy Queuing feature (see Section
3.8.7).
Model - The last seven digits of the transceiver part
number (see Section 1.3) are displayed very briefly on
the top line of the display when transceiver power is
turned on. The eighth display digit is reserved for
future use and is always “0”. For example, a high tier,
800 MHz, 30 watt, LTR transceiver is displayed as
“98832203”.
NO DT GP - Indicates that no valid data group could
be found for the transmission (see Appendix A.4.1).
NO PHONE - Indicates that the LTR system search
mode could not access a system programmed for tele-
phone calls (see Section 3.8.8).
NO POWER - Indicates that the transmitter tempera-
ture is excessive and the transmitter has been shut
down (see Section 3.5.18).