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SECTION 8
BOARD LAYOUTS
8-1 LOGIC, VR-A AND VR-B UNITS
8-1-1 TOP VIEW
•
LOGIC UNIT
8 - 1
DS2
DS3
Q5
C20
C21
R26
R23
R33
R31
R32
C19
R29
R34
R2
R1
C5
R16
C9
C18
R14
R1
1
C6
R6
R13
R9
R7
R17
C8
R12
R10
C17
C1
R4
C2
R5
C7
R8
R15
R20
R21
R24
C15
R25
R22
C16
R30
C14
C4
C3
C13
R3
R27
C1
1
R28
C12
R19
R18
Q4
C10
IC1
X1
J1
1
1
D4
IC4
J2
IC2
Q3
D3
IC3
Q2
D1
Q1
D2
SP+
SP+
SP—
SP—
GND
BEEP
PTT
ICF3
HANG
TXDET
OEX. OE
P. STB
OEX.STB
TONE
S.METER
SQL
PTT. S
UNLK
CK
DATA
DATAM
DATAS
SQLV
BUSY
GND
GND
F. MODE
HVS
NC
5V
1
30
J1
TO MAIN
UNIT J4
KEY.M
GND
J2
1
2
FROM
MICROPHONE
R1
1
HV
GND
VOL2
VOL1
HVS
1
5
J2
TO MAIN
UNIT J1
J1
1
R1
SQLG
SQL
V
SQLI
1
3
J1
TO MAIN
UNIT J1
•
VR-A UNIT
•
VR-B UNIT