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SCHEMATIC DIAGRAM - 3

: +B signal line : FM/AM signal line

: FM signal line : FM OSC signal line

: AM signal line : AM OSC signal line

TUNER CIRCUIT
Z120 FM FRONT END (ENV17290G1Y) 2SK238 RF AMP D JK101 FM EXT ANT 75 4P 7P 1uH 22P 15P 1 2 2 1P 1 0.47uH 100K 18P 8P 8P G 100K S 1P 22P 2SC2620 4P FM MIXER 10K Q101 FM IF AMP CF201 1 3 ((0V)) Q101<0.7V> (0V) C104 1000P R105 470 6 2 R103 270 R104 1K R106 470K C103 R107 0.01 330 ((0V)) <3.8V> (0V) ((0V)) <0V> (0V) 22

2SC2787LTA
7 16V100 0.022

220P 100 0.022

0.022

33K

0.022

1.5M

2.7K

AM LOOP ANT AM EXT ANT

2SK360 FM OSC

33K 8P 8P 100K

470K

L101 3 0.68uH 3 4 4 5 L102 0.68uH

10K

220

33K

330

150 330

C101 0.01

C102 25V10

15P 8 2SC2996 BUFFER AMP 3 CF202 1

33P 1.2K 10K

2SC2996 BUFFER AMP 18P 2P

47P

3P

2 3 2 AM ANT COIL 4 R143 22K C119 560P R121 22K R120 47K 5 6 C115 50V4.7 C120 25V10 C137 4700P C118 0.027 C131 100P C139 4700P C117 0.027 C144 4700P C143 4700P R146 100K Q106

1

8

C138 0.01

AM OSC COIL 9 R110 C107 5.6K 0.047 C114 50V3.3 C136 1000P C109 1000P 8 7 Z101 RLA2Z006M-T R112 100K C108 8.2P

C142 50V1

R142 1K C141 R141 50V1 1K R145 100K

C116 R102 0.033 4.7K

R123 68K

((3.93V)) <3.99V> (3.99V) FM IF IN OSC OUT ((5.44V)) ((5.32V)) <5.48V> <5.50V> (5.94V) (5.95V) AM MIX OUT OSC ((2.59V)) ((2.16V)) <2.63V> <2.17V> (2.63V) (2.17V) AFC REG ((2.58V)) ((2.15V)) <2.63V> <2.15V> (2.14V) (2.15V) AM IF IN AM RF IN ((0.33V)) ((0V)) <1.88V> <0V> (1.33V) (0V) AGC GND ((0V)) ((5.00V)) <0.01V> <0.01V> (1.70V) (0.01V) AM OUT SD ((2.57V)) ((5.24V)) <2.56V> <5.24V> (1.58V) (5.26V) DET OUT ST ((2.15V)) ((3.21V)) <2.15V> <3.44V> (2.15V) (4.40V) PILOT IN FM DET ((2.16V)) ((5.38V)) <2.16V> <5.49V> (2.16V) (5.95V) MPX IN VCC ((2.11V)) ((3.76V)) <2.10V> <0.02V> (2.11V) (0.02V) PILOT OUT STRQ ((3.93V)) ((1.85V)) <4.03V> <1.86V> (1.11V) (1.88V) FM/AM RCH ((3.11V)) ((1.89V)) <4.45V> <1.91V> (4.13V) (1.92V) MONO LCH

RVTDTA114EST
POWER SUPPLY (FM:ON) ((0V)) <15.7V> (0V) ((16.1V)) <15.8V> (16.1V)

24

23

22

21

20

19

18

17

16

15

14

13

((16.1V)) <0V> (16V)

R118 R119 4.7K 33K

IC101

Q106

1 ((2.17V)) <2.17V> (2.17V) C127 16V22

2

3

4

5

6

7

8

9

10

11

12

IC101

LA1833MN-TLM
C121 50V0.47 C123 50V1 FM/AM IF AMP, DET/AM OSC, MIX/FM MPX

C126 C106 0.01 Z102 RLI2Z006M-T 0.047 3 4 2 C147 1000P 1 3 C129 6.3V100 6 5 C148 0.01

X102 R125 470 R126 1.5K R128 82 C149 0.1

R127 470

R122 2.7K R131 68

C125 25V22 C130 6.3V100 C132 1000P R114 5.6K R113 10K

R111 390 ((16.21V)) <4.32V> (4.57V) AIN ((0V)) <0.88V> (0.88V) PD ((0.89V)) <0.89V> (0.89V) VDD ((5.25V)) <5.25V> L103 (5.25V) 0.47uH FMIN ((0V)) <2.54V> (0V) AMIN ((2.61V)) <0V> (2.52V) MONO ((0.01V)) <4.45V> (0.01V) IFIN R117 68K

C110 D101 0.01 MTZJ5R1BTA ((2.62V)) <2.62V> (2.62V) C133 19 20 15P VSS XOUT

C111 50V4.7 R116 R115 1K C112 560 0.01

((0V)) <0V> (0V)

C113 R129 27K 1000P

R132 10K

18 AOUT

17

16

15

14

13

12

C124 100P ((0V)) <0V> (0V) 11

X103 XIN

IC102
((2.57V)) <2.58V> (2.59V) CE ((0.01V)) <0.02V> (0.01V) DI ((0.01V)) <0.02V> (0.01V) CL ((0.01V)) <0.02V> (0.01V) DO ((5.25V)) <5.25V> (5.26V) AM ((3.99V)) <4.03V> (0.15V) ((0V)) LW <0V> (0V) SDL ((3.93V)) <3.97V> (4.41V) STRQ ((4.52V)) <0.02V> (0.02V) FM IC102

C134 18P R138 3.3K

1

2

3

4

5

6

7

8

9

10 ((16.16V)) <0.07V> (16.18V)

R133 1K R130 10K R137 R136 R135 R134 1K 1K 1K 470

C122 50V1

R124 270

LC72131MDTRM
PLL FREQUENCY SYNTHESIZER

SCHEMATIC DIAGRAM - 4

: +B Line

: FM/AM signal line

: Main signal line

R538 10K R438 10K

R505 18K R405 18K

R501 18K R401 18K

JK601 R CH AUX IN L CH

R520 15K

R420 15K

((0V)) ((0V)) <0V> <0V> (0V) (0V)

((0V)) ((0.7V)) <0V> (0V) <0.7V> (0.7V)

((0V)) ((0V)) ((0V)) ((0.7V)) <0V> ((0.7V)) <0V> ((0.7V)) <0V> (0V) (0V) <0.7V> (0V) <0.7V> <0.7V> (0.7V) (0.7V) (0.7V)

Q503 ((0.7V)) <0V> (0V) Q403
((0V)) <0V> (0V) ((0.7V)) <0V> (0V) ((0V)) <0V> (0V)

C650 1000P

Q502
((0.7V)) <0.7V> (0.7V)

((0V)) <0V> (0V)

Q402

((0V)) <0V> (0V)

Q501

((0V)) <0V> (0V)

Q401

((0V)) <0V> (0V)

((0V)) <0V> (0V)

((1.6V)) <1.6V> (1.6V) Q603

Q603

Q401,402

Q501,Q502

2SC1740SRTA
MUTING

2SC1740SRTA
MUTING

R611 4.7K PW603 AUX_L 1 7.5V 2 COMMON_L A_GND COMMON_R DC15V 3 4 5 6

RVTDTA144EST
MUTING CONTROL (AUX) Q403,Q503

2SC1740SRTA
MUTING

TO MAIN CIRCUIT (CS603) ON SCHEMATIC DIAGRAM-7

C524 25V10 R514 R515 C545 100K 8.2K 25V10 C520 25V10 C518 C517 10P 100P
((8.04V)) <7.93V> (8.03V) ((8.01V)) <7.90V> (8.00V)

C424 25V10 R620 47K R621 47K

((16.00V)) <15.79V> (15.98V) ((8.04V)) <7.94V> (8.03V)

R516 33K

C641 1000P

C634 25V10

8 VCC

7

6

5

IC604
((8.04V)) <7.94V> (8.03V) ((8.04V)) <7.94V> (8.03V) ((7.99V)) <7.90V> (8.00V)

1

2

3

VEE 4
((0V)) <0V> (0V)

IC604

BA4558FDXE2
BUFFER AMP R416 33K

C420 25V10

C418 C417 10P 100P R414 100K R415 8.2K C445 25V10

R503 1.8K R403 1.8K R502 18K R402 18K ((0V)) <0V> ((0.8V)) ((0V)) ((0.8V)) (0V) <0.5V><0.5V> <0V> (0.1V) (0.1V) (0V) ((0V)) <0V> (0V) R663 2.2K ((15.4V)) <15.4V> (15.7V) ((0V)) <0V> (0V) ((0V)) Q407 <0V> (0V)

JK604

LINE OUT

Q507
((0.7V)) <0.5V> (0.1V) D637 RVD1SS133TA ((15.7V)) <15.5V> (15.7V)

C651 1000P

Q407,Q507

2SC1740SRTA Q617
D636 RVD1SS133TA R662 4.7K ((12.7V)) <15.4V> (15.6V) C670 50V2.2 ((0V)) <0V> (0V) MUTING Q618

Q618

RVDTC144EST
MUTING CONTROL

Q617

RVDTDTA144EST
MUTING CONTROL 8 7 6 5 4 3 2 1 CS601
VREF+ T_MUTE PLL_CL PLL_DO/STEREO PLL_DI PLL_CE SD LINE_MUTE

TO OPERATION CIRCUIT (PW601) ON SCHEMATIC DIAGRAM-6