Icom IC-R20 Service Manual - Page 52
Rec Unit (top), B_ain, A_atn, To Logic Unit Hj8, Vl Down, Vl Up, Sub_3c, Vol_up_down, Cpu_tx
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Page 52 highlights
9-3 REC UNIT • TOP VIEW to LOGIC UNIT HJ8 4 GND AOUT B_AIN 1 A_ATN J6 VL DOWN VL UP The combination of this page and the next page shows the unit layout in the same configuration as the actual P.C. Board. SQL 9 - 5 USB J7 1 +3V SUB_3C VOL_UP_DOWN SQL CPU_TX 6 CPU_RX to LOGIC UNIT HJ9
9 - 5
The combination of this page and the next page shows
the unit layout in the same configuration as the actual
P.C. Board.
GND
AOUT
B_AIN
A_ATN
4
1
to LOGIC UNIT HJ8
J6
VL DOWN
USB
VL UP
SQL
+3V
SUB_3C
VOL_UP_DOWN
SQL
CPU_TX
CPU_RX
1
6
to LOGIC UNIT HJ9
J7
9-3
REC UNIT
• TOP VIEW