Table Of Contents - Icom IC-R71A Service Manual

Table of Contents

Table of Contents2
Specifications3
Controls and Their Functions4
Front Panel Facilities4
Rear Panel Facilities7
Inside View8
Main Unit View8
RF Unit View8
Bottom View9
PLL Unit9
Block Diagram10
Operation12
RF Unit12
RF Circuits12
Main Unit13
1St if Circuits13
2Nd - 4Th if Circuits13
AF Circuits/Noise-Blanker Circuit13
Filder Select Circuit14
IC3 Input/Output Relationship by Mode14
During SSB/CW/RTTY14
During am14
Filter Table15
AGC Circuit15
S-Meter Circuit and Squelch Circuit15
BFO Circuit15
Reference Oscillation Circuit16
2Nd Local-Oscillation Circuit16
Main Loop17
PLL Ics17
Loop Filter and Muting Circuit17
VCO Circuit17
Sub Loop18
Loop System18
Local Oscillator Circuit18
PLL Data19
How N Data Are Obtained19
Logic Unit20
Cpu20
CPU Input Control Circuit20
Custom IC Port Allocation20
I/O Expander Circuit21
Display Timing21
N Data21
Display Data Timing21
N Data Output Timing22
High and Low N Data22
Scan Circuit23
Matrix Unit23
Matrix Table23
Display Unit25
REG Unit25