TP0332/2
4.5
RE-ASSEMBLY
Re-assembly is the reverse of dis-assembly. However:
(1)
Examine the various seals before re-assembly and replace with new items if necessary.
(2)
Slight outward deflection of the case walls will ease re-assembly of the MMI PCB behind the
retaining lugs.
(3)
Care must be taken when reconnecting the flexi-circuits to ensure that they are correctly aligned
before pressing home the locking drawers on the connectors.
(4)
Ensure that the metal screen is fitted to the PCB / frame assembly before the assembly is fitted to
the casing.
(5)
To prevent damage to the frame seal, use a thin, flat piece of plastic (or other material) in a
‘shoehorn’ action between the bottom inside of the front case and the frame / PCB assembly as the
assembly is pushed home. Carefully remove the piece of plastic (or other material) after the
frame / PCB assembly has been fitted to the front case.
TEST INFORMATION, EQUIPMENT AND DATA
Test Information
(1)
All RF generator levels are the potential difference from a 50 ohm source.
(2)
All measurements are performed at room temperature, 25°C ±5°C.
(3)
All tests are carried out at a standard test voltage of 7,2V ±0,05V unless otherwise specified.
(4)
Transmitter tests are not to exceed one minute transmission in any five minute period.
(5)
As tests are performed using the customer’s data, some tests may give different results, e.g., the
frequencies and power settings may be different from those specified.
(6)
All connections to the radio under test shall be made via the test interface unit (TIU). RF connections
are to be made via less than 10cm of low loss coaxial cable.
(7)
Tests are to be carried out in the order specified.
(8)
The receiver rated audio output is 500mW into 16 ohms with less than 5% distortion at 350mW.
(9)
Signalling option checks should be carried out where appropriate only.
(10)
Psophometrically weighted SINAD measurements are denoted SINADp.
CALIBRATION
Refer to the On-line help and the Alignment tool user instructions - APPENDIX D.
Summary of Contents for SRP8000 SERIES
Page 1: ...SERVICE MANUAL TP0332 2 SRP8000 SERIES VHF UHF PORTABLE RADIO...
Page 55: ...TP0332 2 6 5 Figure 6 4 Radio PCB Component Layout Diagram Side 2 MAIN ASSEMBLY SIDE 2 BOTTOM...
Page 57: ...TP0332 2 6 7 Figure 6 6 Radio PCB Circuit Diagram...
Page 58: ...6 8 TP0332 2 Figure 6 7 Power Supplies Circuit Diagram...
Page 59: ...TP0332 2 6 9 Figure 6 8 Receiver Circuit Diagram...
Page 61: ...TP0332 2 6 11 Figure 6 10 Frequency Generation Circuit Diagram...
Page 62: ...6 12 TP0332 2 Figure 6 11 Baseband Circuit Diagram...
Page 63: ...TP0332 2 6 13 Figure 6 12 Control Circuit Diagram...
Page 64: ...6 14 TP0332 2 Figure 6 13 SMART Interface Circuit Diagram...
Page 67: ...TP0332 2 6 17 Figure 6 16 MMI PCB Circuit Diagram...
Page 75: ...TP0332 2 B 3 PARTS LIST Description Part No Remarks Lapel LS Mic complete 0000 242 10001...
