Icom IC-F50 Service Manual Addendum page 16

BOARD LAYOUTS
• FRONT UNIT
(TOP VIEW)
+
-
R435
1
R436
R514
C450 R479
R480 C449
C447
R478
C488
C443
IC406
C404
R427
C495
C499 C444
R428
R410
C406 R470
C421
R406 C498 C482
R405 C405
C481 R408 R511
C493
IC407
3
IC401
C489
R407
C407 R497
R411
R486
C474
R496
R485
R508 C492
R483
R484
C402 R409
R403 R509
IC409 C420
D401
C479 C419
C463
D403 D405
R417
B6033D
36
J402
to the VR unit W601
5
4
J402
R515
C436 4 1 4
C429
VCC
C427
Q401
C448
C441
R437
C430
Q408 R438
R439
R421 C411
C431
D406
IC410
C409
R422 R423
C487
J401
2
to the MAIN unit J1
R482
R440
36
MIC
Q409
GND
TONE
CDCS
R456
SIGNAL
R455
SO
SCK
MDIO
MSCK
SCST
R487 PLST
SCAT
EXSM
R500
EXOE
C414 MTOT
Q411
MTCK
R492
NOIS
R491
SDEC
C418
CDEC
KR1
C467
LVIN
RSSI
TEMP
UNLK
MDIA
MROF
DAST
CSFT
PWON
J401
GND
GND
S5V
CPU5
1
NC
VCC
1
VCC
6
• VR UNIT
(TOP VIEW)
R601
6
1
• CONNECT UNIT
(TOP VIEW)
J1
to the FRONT unit J401
38
GND
38
36
VCC
GND
VCC
NC
+5V
S5V
GND
GND
PWON
CSFT
DAST
MROF
AFO
MDIA
UNLK
VCC
TEMP
RSSI
OPTV
LVIN
MICE
KR1
CDEC
RESET
SDEC
RXD NOIS
MTCK
TXD
MTOT
EXOE
MIC
EXSM
PTT SCAT
PLST
SCST
MSCK
MDIO
SCK
SO
D704
SIGNAL
R701
CDCS
TONE
GND
1
MIC
GND GND
37
37
+ –
• MAIN UNIT
(TOP VIEW)
LV
36
1