Figure 3-2. Receiver Pcb Schematic Diagram - Hitachi ATT-20 Installation, Operation, Troubleshooting

TL1
L1 C1
T1
TRACK
TAB.
1ST 2ND
TAB
C19
.01uf
J2
TL2
L2 R1
TRACK
TAB J1
C15
.1uf
R17
A
1.8K
R18
240K
R20
2K
D5
LVA450
C13
.027uf
R19
270K
C14 R21
.56uf 2.4K
B
Copyright 2019 SM 6299 Rev. 3, March 2019
R2 Q1 TP1
J3
2N3117
680
R6
J4
Q2
2N2270
TBD
D9
1N4003 R5
100
D10
LVA462
R4
10K
C
R22
10K
R23
300
R24
Q6 20K
2N3117
Q7
2N3117
T3
R26
1ST 2ND
Q10
2K
2N2270
C16
.027uf
R25
24K
D6
1N4003
R27 R28
680 20

Figure 3-2. Receiver PCB Schematic Diagram

3-5
TP2 TP6
C3 C4 D1 C8
1N4936 .02uf
TAB. TAB.
R7
TAB.
C6 R8
TAB L3 L4 C5
.0033uf 200K
TAB
TAB.
C
TP5
Q8
2N3053
C17 L6
6.8uf
D7 R3 C18 C7
D11
Q9
VSK130 2K 5uf .01uf
2N4037 1.5KE16CA
L7
Q11
2N4037
+
C10
47uf
R11
47K
Q4
Q3
2N3117
2N3117
R10
R14
1K
C9
1K
.15uf
D2 1ST
R13
T2
TBD
1N914
2ND
TP3
R12 R15
1.5K
10K
TL5
B
RELAY -
TL6
RELAY +
ATT-20 Audio Track Transceiver
TL3
POWER
C
Q5
2N2270
C11 D4
+
A
10uf 1N4003
R16 D3 C12
100 1N4003 + 10uf
B
TP4
TL4
GND