Codan NGT 2010 RF Technical & Service Manual page 22

Index
D
dismantling
3012 310
8571 352
NRI 275
drawings
3012 317
8571 363
high power 247
NGT 201
NRI 289
driver bias
adjusting 176
DSP Modem PCB 304
testing 313
Dual Line Equaliser PCB
supply voltages 354
E
electromagnetic compatibility and safety notices
compliance
earth symbols 22
electrical safety 22
electromagnetic compatibility 21
F
fault finding
3012 307
8571 351
high power 235
NRI 269
filter
second IF 102
Filter and Control PCB
microprocessors and control 100
,
supply voltages 74 108
H
Handset PCB
,
supply voltages 72 106
high output power
adjusting 180
high power
adjustments 235
brief description 219
drawings 247
fault finding 235
,
overview 207 208
parts lists 245
pin connections 211
,
specifications 207 209
technical description 225
Index-2
,
127
,
151
,
147
I
integrated circuits 25
intermodulation
,
checking 187 195
distortion 187
L
LED indicators
3012 294
NRI 273
low output power
adjusting 182
M
maintenance 25
circuit boards
component replacement 27
component substitution 27
excessive heat 26
integrated circuit replacement 28
unsoldering 27
CMOS devices
grounding 26
handling 26
packaging 26
switching off 26
general
dynamic transistor tests 25
integrated circuits 25
spare boards 25
static transistor tests 25
precautions
probe 28
transmitter 28
Microprocessor & TCVR Interface PCB
supply voltages 353
Microprocessor PCB
,
supply voltages 72 147
N
NGT
brief description
2010 55
2011/2012 63
channel additions 129
checks and adjustments 145
drawings 201
,
overview 33 34
parts lists 197
pin connections 41
,
specifications 33 36
technical description
2010 69
2011/2012 103
NGT Transceiver System Technical Service Manual