Icom IC-F50 Service Manual Addendum page 7

Feb. 2008
BOARD LAYOUTS
• FRONT UNIT
(TOP VIEW)
+
-
R435
+
1
-
R514
C450 R479
R480 C449
J403
C447
R478
C488
C443
IC406
C404
R427
C499 C444
C495
R428
C406 R470
R410
C421
C482
R406 C498
R405 C405
C481
R408 R511
C493
IC407
3
IC401
C489
R407
C407 R497
R486
R411
C474
R496
R485
R508 C492
R483
R484
C402 R409
R403
IC409 C420
D401
C419
C479
D403 C463
D405
R417
B6870B
36
J402
to the VR unit W601
5
4
J402
4 1 4
R436 C436
C429
C427
Q401
C448
C441
R437
C430
Q408 R438
R439
R421 C411
C431
IC410
C409
D406
R422 R423
C487
J401
2
to the MAIN unit J1
R482
R440
36
Q409
R456
R455
R487
R500
C414
Q411
R492
R509
R491
C418
C467
J401
1
1
6
• VR UNIT
(TOP VIEW)
R601
6
1
• CONNECT UNIT
(TOP VIEW)
to the FRONT unit J401
38
GND
38
36
VCC
GND
VCC
MIC
NC
GND
+5V
TONE
S5V
CDCS
GND
SIGNAL
GND
SO
PWON
SCK
CSFT
MDIO
DAST
MSCK
MROF
SCST
AFO
MDIA
PLST
UNLK
SCAT
VCC
TEMP
EXSM
EXOE OPTV RSSI
MTOT LVIN
MICE
MTCK KR1
NOIS CDEC
RESET
SDEC
SDEC
CDEC
RXD NOIS
KR1
MTCK
LVIN TXD
MTOT
RSSI
EXOE
MIC
TEMP
EXSM
UNLK
PTT SCAT
MDIA
PLST
MROF
SCST
DAST
MSCK
CSFT
MDIO
PWON
SCK
GND
SO
D704
GND
SIGNAL
S5V
R701
CDCS
CPU5
TONE
NC
GND
VCC
1
MIC
VCC
GND GND
37 37
+ –
• MAIN UNIT
(TOP VIEW)
J1
LV
36
1