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2
3
4
FRONT PART FR965 - FR975 - MFX450 Part A
+5V
+5V
+5D
+5D
A
D
D
2441
2440
1401
1433
3403
3405
220p
220p
3499
6
4
stereo
stereo
470E
3498
5
3
tu clk
tu clk
470E
B
3497
4
2
tu de
tu de
470E
3496
3
1
tu en
tu en
470E
2439
2438
220p
220p
From Tuner
D
D
C
3413
2402
2
4
tu rds
1k
1n
1
tu gnd
2407
2410
470p
22n
From
D
D
Tuner
D
1402
6
P50
P50
+5V
+5V
5
+5D
+5D
D
E
3402
3401
3501
3
V sda
470E
3500
4
V scl
470E
1
V sig
V sig
F
2
V gnd
Only in sets with RDS
V gnd
To 1560
P50 Board &
+5V
Video Selector
+5D
G
1410
3406
3493
4
sofac scl
sofac scl
470E
3494
5
sofac1 sda1
sofac1 sda1
470E
3495
6
sofac2 sda2
sofac2 sda2
470E
H
+5V
2435
2436
2437
+5
220p
220p
220p
D
D
D
3407
1
ss ce
ss ce
I
2
ss clk
ss clk
3
ss data
ss data
11
amp prot
amp prot
15
dd req
dd req
J
14
dd reset
8
nc
9
amp lr on
K
12
amp mute lr
amp mute
13
cs sub
2444
10
3394
22n
To/From
D
D
L
Volume Control Part
1426
1
amp stby
3447
amp stby
+5
330E
+5V
M
3414
2
amp pd
3427
amp pd
1k
+5
150E
+5V
2404
4
+5D
6421
3446
+5D
1n
+5
+5V
330E
+5V
3
+5
D
+5
+5V
2461
5
N
gndd
22n
3393
D
D
6
–30
–30
D
–32V
8
f2
7
f1
O
From
Power Supply
FRONT PART FR965 - FR975 - MFX450
3104 217 06790 / 06800 / 06530 / 06540 /07100
1
2
3
4
6-4
5
6
7
8
9
1400
AT-5I
2442
2443
4M332
3410
47p
47p
3411
D
220k
D
7404
SAA6579T
13
14
OscI
OscO
ANTI
57 kHz
RECON-
OSCILLATOR
Mux
ALIASING
BANDPASS
STRUCTION
AND
FILTER
(8th ORDER)
FILTER
DIVIDER
GENERATOR
COSTAS LOOP
BIPHASE
CLOCKED
DIFFERENTIAL
VARIABLE AND
SYMBOL
COMPARATOR
FIXED DIVIDER
DECODER
CLOCK
TEST LOGIC
REFERENCE
REGENERATION
Vpi
AND OUTPUT
VOLTAGE
AND SYNC
SELECTOR SWITCH
Vssd
Cin
SCout
Vddd
Vdda
Vssa
Vref
Mode
11
7
8
12
5
6
3
9
2403
D
D
D
560p
2408
5400
2409
µ
22n
2
2
2µ2
D
D
+5
+5V
+5V
+5D
5402
µ
2 2
2419
7411
D
22n 16
HEF4094BT
1
+5V
C2
+5
15
EN3
SRG8
3
3448
C1/
6409
4
2
3
2D
1D
PHONO
6408
5
TUNER
6407
6
CD
6418
7
2485
CDR/TAPE
3445
1n
6415
14
+5
330E
+5V
3D-SURR
D
6416
13
3785
SAT
6413
12
VCR
+5V
6417
11
+5D
3786
TV
9
LTL-1CHPE
5401
10
2µ
2
2417
2486
7412
8
1n
D
22n
16
HEF4094BT
D
D
1
C2
15
EN3
SRG8
3
C1/
4
2
3
2D
1D
5
P50
6
+5V
7
+5D
6410
14
2411
3433
DVD
220p
6401
13
3437
SURR
100k
6412
12
HALL
7406
LTL-1CHPE
BC847B
11
9
10
8
D
5
6
7
8
9
10
11
12
13
+5V
+5D
7402
+5V
PDTA144ET
+5D
3392
47k
3391
amp stby
47k
1k
2456
3423
µ
47
D
1440
1441
1
1
QUALITY
Qual
1
BIT
2
2
6400
3404
D
RDDA
2
DECODER
3422
RDCL
16
10k
2462
T57
15
3455
1n
+5V
RC5
+5D
D
D
Test
3400
10
2400
D
µ
7403
2
100
D
3416
3409
3415
1
1k
0E
4
3
D
D
+5V
+5V
+5V
+5D
+5D
+5D
47k
47k
3451
3449
3487
2428
7421
7 µ
4
PDTA144ET
D
6424
+5V
+5D
BAS216
47k
47k
47k
47k
3486
7422
PDTA144ET
7419
D
D
PDTC144ET
Only MARANTZ set
+5V
+5
3408
+5V
+5V
+5V
+5D
RESET
+5D
+5D
+5V
2434
+5D
3429
3430
220n
7409
BC847B
7407
3439
3428
BC847B
10k
6402
3438
220k
6403
7408
3442
1N4148
1N4148
BC847B
3441
D
D
D
D
D
3440
D
Only in sets with P50 function
10
11
12
13
6-4
14
15
16
17
18
+5V
+5D
7415
TMP87CS71F
5403
µ
2 2
33
Vdd
2420
2458
µ
100
22n
D
D
4
stereo
6-BIT A/D
CONVERTER
6
tu clk
tu de
7
tu en
8
I/O
P1
5
1
2
3
+5V
+5D
Not for
3502
FR965/00
MFX450
74
$
3483
D
3426
amp prot
73
I/O
1k
P4
+5V
+5D
3421
67
hp on
2413
22n
D
32
D
nav 1
31
27
nav 2
30
I/O
29
v cont 1
P7
v cont 2
28
25
RAM
ROM
26
17
24
8-BIT
sofac2 sda2
23
CPU
P50
22
sofac1 sda1
I/O
sofac scl
21
P3
20
ss ce
s sel 1
19
18
dd req
s sel 2
TIMER/
INTERRUPT
COUNTERS
CONTROLLER
+5V
+5D
3431
reset
12
CLOCK/TIMER/SYSTEM
CONTROLLER
2414
22n
P20
P21
P22
X in
X out
D
D
16
10
11
13
14
1403
8Mc
CST
2416
2415
3476
22p
22p
D
D
D
D
.....V
.....V
14
15
16
17
18
19
Part A
77
76
80
I/O
79
P5
78
75
70
69
68
I/O
P4
71
72
65
64
63
62
I/O
61
P9
60
59
58
57
56
To
55
FRONT
54
I/O
PART B
P8
53
52
51
50
49
48
47
46
I/O
45
P7
44
43
42
41
40
39
I/O
38
P6
37
36
35
34
Test
Vss
Vkk
9
15
66
–Vkk
D
D
–31V
2412
2457
47µ
22n
3432
D
D
–30
–32V
- Voltage measured during normal operation
- Source position : Tuner FM
- No special features ON
Stand by
Mdi-LEU0179/0015
19
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