Kenwood TK-6110 Service Manual page 19

• Shift Register 2 (TX-RX unit IC701)
Pin No. Port Name
4 Q1 AM1 Audio mute 1
5 Q2 REG1 Modem REG1
6 Q3 REG2 Modem REG2
7 Q4 PD DTMF PD
14 Q5 AUX ACC AUX
13 Q6 – Not used
12 Q7 AM2 Audio mute 2
11 Q8 – Not used
• Shift Register 3 (TX-RX unit IC702)
Pin No. Port Name
4 Q1 BLC LCD, KEY back light SW
5 Q2 RXLED Busy LED SW
6 Q3 TXLED TX LED SW
7 Q4 MM Modem, GE-STAR
14 Q5 HRC Horn alert control SW
13 Q6 MC1 Internal MIC SW
12 Q7 MC2 External MIC SW
11 Q8 – Not used
• Shift Register 4 (TX-RX unit IC703)
Pin No. Port Name
4 Q1 PTTO GE-STAR, Scrambler PTT
5 Q2 CLRC Scrambler CLR code
6 Q3 CHBS GE-STAR Channel Busy
7 Q4 EMRG GE-STAR EMRG
14 Q5 COD1 Scrambler code set
13 Q6 COD2 Scrambler code set
12 Q7 COD3 Scrambler code set
11 Q8 COD4 Scrambler code set
RF Final Amplifier : 2SC2540 (TX-RX Unit Q6,Q7)
• Absolute maximum ratings
Symbol Parameter
V Collector to base voltage
CBO
V Emitter to base voltage
EBO
V Collector to emitter voltage
CEO
I Collector current
C
P Collector dissipation
C
Tj Junction temperature
Tstg Storage temperature
SEMICONDUCTOR DATA
Action
L : Mute, H : Unmute
L : Unmute, H : Mute
Action
L : OFF, H : ON
L : ON, H : OFF
L : ON, H : OFF
L : Mute, H : Unmute
L : OFF, H : ON
L : Mute, H : Unmute
L : Mute, H : Unmute
Action
L : ON, H : OFF
Condition Rating
35V
4V
R = 17V
BE
10A
75W
+175 C
–55~+175 C
Audio Power Amplifier : TDA1519A
(TX-RX Unit IC102)
• Block Diagram
mute switch
1
60k
VA
183
18.1k
Vp
stand-by
switch
VA
x1
3
15k
18.1k
183
9 VA
60k
+
input mute switch
reference
signal
voltage
ground
2
• Terminal function
Pin No. Symbol
1 NINV Non-inverting input
2 GND1 Ground (signal)
3 RR Supply voltage ripple rejection
4 OUT1 Output 1
5 GND2 Ground (substrate)
6 OUT2 Output 2
7 Vp Positive supply voltage
8 M/SS Mute/stand-by switch
9 INV Inverting input
TK-6110
Cm
4
power
stage
8
+
–
stand-by
reference
voltage
+
mute
+
switch
–
mute
reference
voltage
power
stage
6
Cm
power
ground
(substrate)
Vp
7
5
Description
19