Icom IC-M91D - Preparation - MMSI Code Programming; MMSI Code Programming Procedure

2 - 2
VCO
• RF UNIT
(TOP VIEW)
• RF UNIT
(BOTTOM VIEW)
IF IC
(IC170)
+5 V REGULATOR
(Q363)
2nd IF FILTER
(FI151)
DISCRIMINATOR
(X170)
+3.3 V REGULATOR
(IC2)
1ST IF MIXER
(Q150)
+5 V REGULATOR
(Q224)
+5 V REGULATOR
(Q225)
TX MUTE SW
(Q366)
TX MUTE SW
(Q392)
1st IF FILTER
(FI150)
APC CTRL
(IC150)
VCC LINE CONTROLLER
(Q353)
WET DETECT
(Q390)
BUFFER
(Q3)
PLL IC
(IC1)
POWER AMP
(Q54)
RF AMP
(Q90)
TX POWER DETECTOR
(D91)
PRE-DRIVER AMP
(Q53)
BUFFER
(Q50)