Icom iC-M501EURO Service Manual page 34

9-9 HM-126
MC1
KUC2123-030245
W1
R1 C1
470p UP-ON 2.0V
C2 12k
470p DN-ON 3.0V
H/L-ON 3.8V
W2
SP1
S36G04K-4
R5 15
W3 KEYM
KGND
W4 PTT
MIC
MICE
SPMIC
GND
S1
SKHHLP014A
PTT
S2
R2 6.8k
UP
S3
R3 15k
DN
S4
R4 33k
H/L
S2–S4 : SKHHAM024A
• Board layout
J1
GND
SPMIC
MICE
MIC
PTT
KGND
KEYM
W1 (CHASSIS)
J1 P3 P2
KEYM GREEN GREEN KEYM
1 1 1
KGND BROWN BROWN KGND
2 2 2
PTT RED
3 3
MIC IN
4 4
MICE OUT
5 5
SPMIC WHITE
6 6
GND BLACK
7 7
P1
AF1
1
RED PTT
2
BLUE BLUE HANG
HANG 3
OUT MICE
4
IN MIC
5
BLACK GND
6
AF2
7
WHITE SPMIC
8
7
1
• BOTTOM VIEW (DSC)
to LOGIC unit J1
(IC-M501EURO)
to MAIN unit J7
(IC-M501EURO)
• BOTTOM VIEW (PWR-CORD)
9 - 6