Motorola EP450 Basic Service Manual page 5

iv
5.4.3
5.4.4
5.4.5
5.4.6
5.5 Receiver Tuning........................................................................................................................... 5-10
5.5.1
5.5.2
5.5.3
5.5.4
5.6 Utilities ......................................................................................................................................... 5-14
5.6.1
5.6.2
5.6.3
5.7 Radio-to-Radio Cloning................................................................................................................ 5-14
Chapter 6
6.1 Introduction .................................................................................................................................... 6-1
6.2 Preventive Maintenance ................................................................................................................ 6-1
6.2.1
6.2.2
6.3 Safe Handling of CMOS and LDMOS Devices .............................................................................. 6-2
6.4 Disassembling and Re-assembling the Radio - General............................................................. 6-3
6.4.1
6.4.2
6.5 Mechanical View and Parts List ................................................................................................... 6-16
6.5.1
Chapter 7
7.1 Introduction .................................................................................................................................... 7-1
7.2 Preventive Maintenance ................................................................................................................ 7-1
7.2.1
December 3, 2003
More user manuals on
Transmit Power Tuning ..................................................................................................... 5-5
5.4.3.1 To Perform Transmit High Power Tuning, do the following: .............................. 5-6
5.4.3.2 To Perform Transmit Low Power Tuning, do the following: .............................. 5-6
VCO Attenuation ............................................................................................................... 5-7
5.4.4.1 VCO Attenuation 25 kHz.................................................................................... 5-7
5.4.4.2 VCO Attenuation 12.5 kHz................................................................................. 5-8
5.4.4.3 VCO Attenuation 20 kHz.................................................................................... 5-8
DTMF Deviation Tuning .................................................................................................... 5-9
MDC-1200 Deviation Tuning........................................................................................... 5-10
Rated Volume Tuning ..................................................................................................... 5-11
Squelch Tuning ............................................................................................................... 5-12
5.5.2.1 Manual Squelch Tuning ................................................................................... 5-12
5.5.2.2 Auto Tune ........................................................................................................ 5-13
RSSI System Level Tuning ............................................................................................. 5-13
RSSI Display Tuning ....................................................................................................... 5-14
Program Serial No. ......................................................................................................... 5-14
Temp Comp Data Read .................................................................................................. 5-14
Temp Comp Data Write .................................................................................................. 5-14
Display Model Disassembly and Re-assembly ................ 6-1
Inspection.......................................................................................................................... 6-1
Cleaning Procedures ........................................................................................................ 6-1
Radio Disassembly - Detailed ........................................................................................ 6-3
6.4.1.1 Front Cover From Chassis Disassembly ........................................................... 6-3
6.4.1.2 Dust Cover Disassembly.................................................................................... 6-6
6.4.1.3 Speaker and Microphone Disassembly ............................................................. 6-6
6.4.1.4 Keyboard Removal ............................................................................................ 6-7
6.4.1.5 PTT Disassembly............................................................................................... 6-7
6.4.1.6 Chassis Disassembly......................................................................................... 6-8
Radio Re-assembly - Detailed .......................................................................................... 6-9
6.4.2.1 Dust Cover Re-assembly ................................................................................... 6-9
6.4.2.2 Microphone and Speaker Re-assembly............................................................. 6-9
6.4.2.3 Keypad and LCD/Keyboard Re-assembly ....................................................... 6-11
6.4.2.4 Keyboard Retainer Re-assembly ..................................................................... 6-12
6.4.2.5 Chassis Assembly/Re-assembly...................................................................... 6-12
6.4.2.6 Chassis and Front Cover Re-assembly ........................................................... 6-13
6.4.2.7 PTT Re-assembly ............................................................................................ 6-15
EP450 Display Model Exploded View and Parts List ...................................................... 6-16
Non-Display Model Disassembly and Re-assembly ........ 7-1
Inspection.......................................................................................................................... 7-1
ManualsBase.com
Table of Contents
HKLN4215A