Test Frequency Menu; Table 16 Alignment Procedures; Table 17 Minimum Rf Performance Tests For Board Replacement - Motorola Spectra Service Manual

Procedure > Reference
Oscillator
ITEM Tuning
RF BOARD First
REFERENCE Only
OSCILLATOR
VCO BOARD N/A
COMMAND BOARD Second
CONTROL HEAD N/A
BOARD
PA BOARD N/A
MEMORY BOARD N/A
Part Number
N/A
N/A
03-00007164
03-80114M02
03-10911A11
03-10911A12
03-10943J15
03-80102P01
03-10945A11
03-10945A14
03-80043L01
03-80077M01
03-80077M02
03-80077M03
03-80077M04
03-80114M01
03-84244C06
6. Refer to paragraph VII., F. Troubleshooting and
Repair to realign the radio.
F. Fastener Torque Chart
Table 17 lists the various fasteners by part number
and description, followed by the torque values and the
location where used. Torque all fasteners to the recom-
mended value when assembling the radio.
IX. TEST FREQUENCY MENU
The test mode is part of the diagnostics built into the
radio and is entered through the front panel program-
ming sequence. (See FRONT PANEL PRO-
GRAMMING AND ADJUSTMENTS in this manual, and
specifically, paragraph XVI. for password entry.)
After the password is successfully entered, the radio
enters a test mode where basic radio and signalling
measurements are made at three separate frequencies
across the band. The first six characters of the display
48
Table 16. Alignment Procedures
Deviation Power Set &
Adjustment Current Limit
Third
N/A
Second
Fifth
N/A
N/A
N/A
Table 17. Minimum RF Performance Tests for Board Replacement
Description Repair Torque (in.-lbs.)
1/4–40 hex nut
7/16 hex nut
Screw, machine 6-32
Screw, machine M5X10
Screw, machine M3X8
Screw, machine
Screw, tapping M3.5X8
Screw, tapping M3.5X10
Screw, plastite M3X16
Screw, plastite M3X8
Screw, tapping M3X10
Screw, hex M3X18
Screw, hex M4X16
Screw, hex M4X25
Screw, hex M3X22
Screw, machine M3.5x44
Wing screw M5X10
Compensation
Adjustment
N/A Second
N/A N/A
N/A N/A
Third N/A
N/A N/A
Only N/A
N/A N/A
10-12
6-8
4-6
6-8
6-8
6-8
6-8
6-8
6-8
6-8
6-8
6-8
10-12
10-12
6-8
6-8
6-8
show the six least-significant digits of the selected
receive or transmit frequency, and the last two charac-
ters indicate the type of signalling or modulation
selected. For example, the first receive frequency upon
entry to the test mode is 935.0125 MHz and the sig-
nalling is carrier squelch. The display shows
"350125CS". When transmitting, the display will change
to the transmit frequency. The three test frequencies
are:
Test
Frequency
First
Second
Third
The signalling types are shown in Table 18.
In test mode, press Volume to adjust volume. How-
ever, the volume display in test mode is in 256
Compensation Signalling
Calibration Deviation
Adjustment
N/A N/A
N/A N/A
First N/A
Fourth Sixth
N/A N/A
N/A N/A
N/A N/A
Where used
Control head power switch (Earlier models only)
Mini-UHF antenna connector
PA board power tap (earlier models)
Radio mounting
PA boards device attachment
Pass device
All PC board attachment (except for control head
and remote dash board); back housing to chassis
(earlier models)
Mid power PA cover and top and bottom radio covers
Control head and remote dash board attachment
Remote control cable cover
External power connector, accessory clip
Control head mounting; remote front housing mounting
Low power heatsink mounting
Mid power heatsink mounting
Remote cable mounting
Top and bottom cover (earlier models only)
Radio mounting
Receive Transmit
Frequency Frequency
935.0125 MHz 896.0125 MHz
938.0000 MHz 901.9875 MHz
940.9625 MHz 940.9875 MHz
Memory
Module
Initialize
N/A
N/A
N/A
First
N/A
N/A
Only
Transmit
Power Level
High (Rated)
High (Rated)
High (Rated)