A
1
2
3
4
5
6
7
8
DSP-R496/RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS
B
C
D
E
F
G
H
I
J
K
E-66/J-62
■
SCHEMATIC DIAGRAM [TUNER] J, U, C, R, T, A and L models
V : 2V/div
H : 0.1
µ
sec/div
2V
SAMPLE 0.1us
Point
1
(Pin22 of IC2)
DC range
1 : 1 probe
0V
PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC’s.
LA1266
2SC535(A,B,G)
2SC1815(Y)
1SS133
1SS176
HSS104
MTZJ5.6B
Anode
Cathode
2SC1740S(R,S)
DTA114ES
DTC144ES
E
C
B
LA3401
LC72131
12
24
1SS355
UDZS5.6BTE-17
Anode
Cathode
FM
AM
AM
FM
10.4
(0)
10.5
(11.5)
0.1
(10.6)
5.1
(5.0)
(4.4)
(0)
5.1
(5.2)
7.7 (7.6)
2.4
(1.1)
2.4
(1.1)
2.4
(1.1)
0
(0)
11.0
(11.1)
11.0
(11.1)
11.0
(11.1)
0
(0)
3.9
(3.7)
2.3
(2.2)
0
(2.1)
3.0
(2.8)
3.4
(2.1)
3.9
(3.5)
3.9
(3.5)
(1.9)
(3.5)
5.0
11.4
(11.5)
5.7
(5.7)
5.7
(5.7)
0
(0)
2.4
(0)
4.9
(5.0)
0
(2.5)
(0) 2.4
4.9
(5.0)
(1.0) 1.0
(1.0) 1.0
(5.0) 4.5
(0)
0
(0)
0
0.1 10.6
(0)
0
(0)
0
(0.2)
11.4
(0)
0
(0)
0
(0)
0
(0)
0
(2.5)
(2.5)
2.4
0
(11.5)
(11.5)
11.4
11.4
(0.2)
(1.5)
3.9
0
(10.5)
1.5
2.4
(1.1)
(2.8)
0
(2.2)
2.6
(2.0)
1.5
1.5
11.0
2.4
(11.1)
3.0
(2.8)
(2.1)
3.1
(3.1)
3.1
(3.1)
3.1
(3.1)
3.1
(3.1)
3.0
(3.0)
3.1
(3.1)
3.1
(3.1)
3.0
(3.0)
3.1
(3.1)
0
(6.9)
11.1
(11.2)
3.4
(3.6)
2.8
(7.0)
2.8
(5.2)
2.8
(5.2)
2.8
(9.1)
2.8
(2.8)
0
(0)
4.9
(0)
4.9
(5.0)
0
(0)
0
2.8
(9.1)
0 (0)
2.8
(9.1)
4.9
(4.9)
0
(0)
0 (0)
4.4
(5.2)
87.5MHz
98.0MHz
108.0MHz
1.9V
4.5V
7.8V
531KHz
1080KHz
1611KHz
1.3V
5.0V
7.3V
AM
FM
1
2.5
MONAURAL DISTORTION ADJ.
SIGNAL METER ADJ.
DISCRIMINATOR BALANCE ADJ.
SEPARATION ADJ.
(9.4)
9.3
0
(0)
AM SENSITIVITY
VT
U, C, R, T, A, B, G, L
models
76.0MHz
83.0MHz
90.0MHz
1.6V
4.1V
8.1V
531KHz
1080KHz
1611KHz
1.4V
5.1V
7.4V
AM
FM
VT
J model
REGULATOR
PLL
MPX
AM/FM IF
TO INPUT(1)
CB107
page E-60/J-56
I-8
:USED
:NOT USED
bottom view
s23
s23
s22
s27
s24
s29
s25
s26
s25
s25
s15
s25
s29
s30
s21
s23
s21
s25
s25
s23
s
21
22
23
24
25
26
27
28
29
30
Lead Type & SMD
1SS355
VT33290
UDZS5.6BTE-17
VU17200
VU88950
8P/50
UB05080
0.01/50
UB04410
1000P/50
UB01310
47P/50
UB05147
0.047/50
UB04447
470P/50
UB01247
Lead Type
1SS133,
1SS176,
HSS104
VD631600
MTZJ5.6B
VG43770
Vi54610
8.2P/50
VG27580
0.01/16
VF46730
1000P/50
VF46700
47P/50
VA46670
0.047/16
VJ59900
470P/50
VF46690
D1, 2
D3
L1,2,3,4
C3
C5,8,9,10,23,27
C11,15
C16
C21,50
C38
RD25647
RD25722
RD25775
RD25722
RD25775
RD25722
RD25775
RD25827
RD25810
RD25810
RD25827
RD25827
RD25827
RD25710
RD25710
RD25710
RD25610
RD25818
IC1 : LA1266
AM/FM IF
IC2 : LC72131
PLL Controller
IC3 : LA3401
MPX
• PK1 : ENV-142C2G1R (V2909000) J model
L11
L1
L10
C2
10P
C33
2200P
C32
2200P
DT1
MA372
D5
MA110
C5
7P
R3
100K
R4
22
R8
1K
L2
C13
0.018
µ
L3
C31
7.5P
Q1
2SK360
R2
100K
R9
100
DT2
MA372
R5
100K
C8
5P
L5
R28
1K
R7
390K
C10
27P
C9
470P
C29
2P
C17
10P
R15
Q2
2SC2620
L7
R19
10K
C24
47P
R23
330
R22
330K
C19
5P
R25
C23
15P
Q6
2SC2619
R17
10
C20
39P
Q4
2SC2814
C18
27P
R14
1.8K
R16
330
R13
10K
R12
10K
C27
0.018
µ
L6
C15
0.3P
DT4
MA372
R10
2.7K
C14
100P
C12
0.018
µ
C26
0.018
µ
ANT
ANT2
GND2
GND3
VT
+B
IF OUT
OSC OUT
1
2
3
4
5
6
7
8
• PK1 : ENV-172C8G1R (V2909100) U, C, R, T models
L11
L1
L10
C2
5P
C33
2200P
C32
2200P
DT1
MA372
D5
MA110
C5
5P
R3
100K
R4
22
R8
1K
L2
C13
0.018m
L3
C31
1.5P
Q1
2SK360
R2
100K
R9
100
DT2
MA372
R5
100K
C8
5P
L5
R28
R7
680K
C10
27P
C9
470P
C29
2P
C17
9P
R15
Q2
2SC2620
L7
R19
10K
C24
47P
R23
330
R22
330K
C19
5P
R25
C23
15P
Q6
2SC2619
R17
10
C20
12P
Q4
2SC2814
C18
22P
R14
1.8K
R16
330
R13
10K
R12
10K
C27
L6
C15
0.2P
DT4
MA372
R10
2.7K
C14
82P
C12
0.018
µ
C26
0.018
µ
ANT
ANT2
GND2
GND3
VT
+B
IF OUT
OSC OUT
1
2
3
4
5
6
7
8
• PK1 : ENV-172A4G1 (V2716700) A, B, G, L models
ANT
AGC
GND2
GND3
VT
+B
IF OUT
OSC OUT
C11
22P
C1
39P
L9
C28
6P
R1
100K
C2
15P
C31
0.01
µ
C32
0.01
µ
L1
C3
0.75P
DT1
SVC212
R2
100K
C4
7P
R3
100K
C5
10P
Q1
2SK439
R4
150
R8
10K
R26
1.5K
R27
390
L2
L3
R9
33
C30
0.018m
C13
0.018m
C6
7P
DT2
SVC212
DT3
SVC212
R5
100K
R6
100K
L8
C8
4P
L4
C7
2.5P
C10
27P
C26
0.01
µ
C12
0.018
µ
C14
47P
C25
0.01
µ
R10
4.7K
C16
2P
DT4
SVC212
C15
L6
Q5
2SC461
R20
330K
R21
470
C29
2P
C27
0.018m
R12
10K
C17
8P
Q4
2SC461
C18
27P
R13
10K
R14
1.8K
C9
470P
R7
1M
Q2
2SC535
R19
C24
47P
R23
330
R22
330K
C19
5P
C20
12P
R24
10
Q6
2SC461
R25
C23
15P
L7
1
2
3
4
5
6
7
8
L5
0.47m
★
All voltages are measured with a 10M
Ω
/V DC electric volt meter.
★
Components having special characteristics are marked and
must be replaced with parts having specifications equal to those
originally installed.
★
Schematic diagram is subject to change without notice.
Each voltage given here represents that in the FM (83MHz: J model or 98.1MHz:EX model STEREO)
reception mode but the one in the parentheses ( ) is that in the AM (1080kHz, MAN’L) reception mode.