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6-1. BLOCK DIAGRAM
IC1
FM RF/MIX
7
Q7,14
CF1
VCC
10.7MHz
RF
MIX OUT
IF
MIX
1
6
AMP
AMP
Q1,4
OSC
BUFFER
5
X1
10.7MHz
FM
8
FREQUENCY
T2
Q3
COVERAGE
AM IF
LOCAL/DX
L1
L2
D1
D2
FM RF
FM OSC
RF OUT
RF OUT
T1
L5
D3
AM OSC
AM FERRITE-ROD
ANTENNA
Q10
RF
AMP
Q5,6
LPF
J501
MIC
Q503
Q502
HP901
L-CH
REV
R-CH
R-CH
FWD
L-CH
FWD
Q508
REV
Q504-507
16
Q511,512
V✤REF
T501
Q501
BIAS
OSC
1
Q510
Q514
S501
ISS
2
3
RF OUT
• Signal Path
: FM
: PB (TAPE)
: REC (TAPE)
SECTION 6
DIAGRAMS
RV1
IC2
FM VCO
IF AMP/MPX
17
AF
IF AMP/
MPX
L
3
22
20
14
FM DET
MPX
PILOT
7
21
R
15
Q11
CF2
450KHz
LP2A
18
RF OUT
IF AMP/
6
AM DET
LP2B
19
5
VCC
Q9
4
Q13
OSC
2
IF REQ
11
24
MIX
Q12
LPF1
16
Q2
IF OUT
10
BUFFER
IC301(1/2)
PB AMP
5
7
1
ANS IN
12
4
10
2
F/R SW
44
IC501
MIC
REC AMP
3
REG
MONITOR L
46
MONITOR L
47
MIC IN L
41
L
23
16
15
RADIO IN L
21
42
MIC IN R
20
R
17
14
RADIO IN R
43
18
REC MUTE
35
Q515
44
REC/PLAY
32
27
CONT D
FWD/REV
33
28
CONT C
MIC/RADIO
34
5
6
7
8
45
Q513
B+2.5V
REG
B+1.5V
Q509
— 13 —
RV301
VOL
Q18(1/2)
BUFFER
Q18(2/2)
BUFFER
IC302
DOLBY
Q19
Q305
CONTROL
Q304
+2.5V
14
VCC
4
5
V REF
11
10
13
SW
IC3
SYSTEM CONTROL
23
DOLBY VCC CTL
AVLS CTL
54
30
BAND AM/FM
RV CTL 56
IMB/GRV CTL 57
68
MONO/ST
AMP CTL 58
MUTE CTL 28
64
IF IN
AMS IN 37
BEEP 49
PRE CTL 27
BST CTL 55
71
AM IN
R DATA OUT 31
70
FM IN
R DATA IN 34
66
DO
65
LOCAL/DX
F TUME 32
TAPE 52
R TUME 33
29
F/R CTL(PLAY)
S 1/2 CTL 24
MOTOR CTL 50
OSC CTL 36
MOTOR DIR 51
PM CTL 60
F/R SW 44
PHOTO CTL 38
PHOTO IN 39
59
DOLBY CTL
HOLD SW 41
53
REC CTL
26
F/R CTL(REC)
25
RADIO/MIC
KEY IN 43
HOLD SENS 35
WAKE UP 67
4
74
XOUT
X2
BATT DET 42
75kHz
75
XIN
IC4
EEPROM
DI 3
47
M DATA I/O
DO 4
DDC2 CTL 61
SK 2
48
M CLOCK
CS 1
46
CS
1
COM1
4
COM4
ND1
LCD
5
S1
DDC1 CTL 40
22
S18
IC301(2/2)
D201
POWER AMP
D101
PW IN L
PW OUT L
28
20
D301
29
PW NF L
PW IN R
PW OUT R
27
22
26
PW NF R
Q303
PW OUT C
21
AGC IN 35
B+1.5V
3
REF OUT
Q1352
Q302
VCC 19
33
BST OUT
BIAS 18
REG
RF OUT 17
PW IN C
28
RF OUT
42
41 40 39 45 43
46
IC601
RV601
MOTOR
CONTROL
TAPE SPEED
ADJ
7
V REF
10
IN+
U 19
Q601
V 1
W 3
8
START
5
OSC
6
DR
B+2.5V
REV
PH1
STOP
S1
Q15(1/2)
PR-20
FWD
Q15(2/2)
ON
S2
HOLD
OFF
S3
S4
S5
S6
S7
S8
S9
MENU
SET
RADIO ON/
FF
REW
RADIO
BAND
PRESET+
PRESET-
REPEAT
OFF
IC5
CONP.
IC6
1
3
2
REG
3
B+2.5V
D801
IC801
DC/DC
2
Q20
CONV.
1
T801
Q801-803
D804
B+2.5V
DC/DC
CONV.
D803
B+VD
D802
B+1.5V
— 14 —
R-CH
J701
L-CH
COM
REMOTE
GND
REMO
D302
DATA
D303, 304
VCC
F1
B+1.5V
S902
ATS SWITCH
F TUME
S901
TAPE SWITCH
R TUME
B+1.5V
M601
U
CAPSTAN/REEL
V
MOTOR
W
B+1.5V
Q16,17
D4
PM901
S10
S11
ENTER/
REC
COUNTER
RESET
Ni-Cd
(NC-6WM)
1.2V
OR
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
IPC 1.5V
5
Q804,805
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