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Panasonic PV-4601 A Service Manual page 181

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Hi-Fi AUDIO/VIDEO HEAD AMP SCHEMATIC DIAGRAM
REC VIDEO SIGNAL
TO MAIN
P3501
P3001-
7
UNSW +5V (VIDEO)
7
P3001-
11
Hi-Fi HEAD SW
11
P3001-
8
PB AUDIO
8
P3001-
9
REC AUDIO
9
5
P3001-
10
Hi-Fi DELAY REC (H)
10
P3001-
13
DELAY REC +12V
13
P3001-
14
CUE/REV/SS (L)
14
P3001-
16
REC/PB VIDEO
16
P3001-
17
PB (L)
17
P3001-
18
HEAD AMP SW
18
P3001-
19
ENVELOPE DET
19
P3001-
15
SW +12V
15
P3001-
20
HEAD SW
20
P3001-
6
UNSW +5V (SYS.CTL)
6
P3001-
2
CYL PG/FG
2
P3001-
4
UNSW +14V
4
4
P3001-
1
GND
1
P3001-
5
V-REF
5
P3001-
3
CYL ERROR
3
P3001-
12
GND
12
R2606
P3001-
21
GND
21
C2609
560
0.1
P3001-
22
FULL ERASE HEAD
22
FULL ERASE HEAD UNIT
P3504
FULL
1
FULL ERASE HEAD
ERASE
2
3
GND
HEAD
VJBS0482
TO D.D CYLINDER
P3502
PIN-
8
UNSW +14V
8
PIN-
4
HE-
4
PIN-
6
HE+
6
PIN-
1
MAIN COIL 3
1
PIN-
2
MAIN COIL 2
2
PIN-
3
MAIN COIL 1
3
PIN-
5
VH+
5
PIN-
7
GND
7
2
UPPER CYLINDER
VIDEO SP
L HEAD
PIN
P3503
9
VIDEO SP L HEAD
9
VIDEO SP
R HEAD
7
VIDEO SP R HEAD
7
6
VIDEO LP/SLP R HEAD
VIDEO LP/SLP
4
VIDEO LP/SLP L HEAD
L HEAD
5
VIDEO LP/SLP L/R HEAD
VIDEO LP/SLP
8
VIDEO SP L/R HEAD
8
R HEAD
1
2
Hi-Fi AUDIO L/R HEAD
Hi-Fi AUDIO
1
Hi-Fi AUDIO HEAD
R
L HEAD
3
Hi-Fi AUDIO HEAD
L
Hi-Fi AUDIO
R HEAD
A
B
(D,E)
PB VIDEO SIGNAL
REC AUDIO SIGNAL
L3501
C2606
C2605
C2604
0.1
0.1
0.1
0.1
13.0
13.2
1.2
3.9
3.9
3.9
5.1
2.9
18
17
16
15
14
13
12
11
10
VCC
CHARGE/
OSD
DISCHARGE CTL
IC2601
AN3813K
LOGIC
DRIVE
POSITION
CYLINDER
SIGNAL
BEMF
MOTOR
DET
DET
DRIVE
PG/FG
PROCESS
CURRENT
SATURATION
TORQUE
MOD
DET
COMMAND
WAVEFORM
SHAPER
GND
1
2
3
4
5
6
7
8
9
13.0 13.0
0.1
0.6
2.6 2.4
1.3
0.9
C2612
C2610
R2604
R2605
0.1
0.01
1
1.2
1/4W
1/4W
C2611
0.022
C2602
C2601
0.1
0.1
R2602
R2601
470
470
6
4
5
2
1
3
C
D
PB AUDIO SIGNAL
CYLINDER SERVO
100
C3504
R3501
C3505
0.01
47K
47/16V
C2607
C2608
C3507
0.1
0.1
0.01
WF48
C3506
0.1
(0.1)
(0.1)
(0.7)
(5.1)
(2.7)
12.0
0
1.3
0.1
2.3
5.0
0.7
36
35
34
33
32
31
30
29
GND GND GND
REC
PB +5V
ENVE
CTL
PB
DET
IC3501
AN3361SB
SP
LP/SLP
(HEAD AMP)
L
R
AMP
AMP
1
2
3
4
5
6
7
8
(0)
(0)
2.6
(0)
(0.3)
(0.2)
WF49
0.7
0.7
1.4
4.2
1.4
C3511
C3513
C3533
C3503
0.1
0.1
0.01
0.01
C3508
C3512
0.1
0.1
C2603
R3503
R3502
0.1
56
56
R2603
470
E
F
NOTE:
FOR SCHEMATIC AND C.B.A. DIAGRAM NOTES,
REFER TO BEGINNING OF SCHEMATIC SECTION (SECTION III).
R4401
1K
C4403
C4401
0.1
0.01
(4.8) (1.4)
(11.9)
0.5
5.0
0.5
12
28
27
26
25
24
23
22
21
20
19
LPF
AMP
AGC
DET
LP/SLP SP
R
L
AMP
AMP
13
(0.8)
0
9
10
11
12
13
14
15
16
17
18
(0.2)
0
0
(0.2)
(6.3) (6.3) (6.3)
2.2
2.2
0
0
0
C4404
0.1
C3528
C3520
C3519
C3524
0.1
0.1
0.1
0.1
R4403
R4407
220K
12
C3532
C3523
0.1
0.1
R3504
R3505
R3507
56
56
560
R4406
C4405
680
220P
WF50
TP3501
R3506
0
560
G
H
L4401
100
C4406
R4421
TP4405
0.01
390
(3.6)
2.1
R4415
C4407
C4408
2200
0.01
100
/6.3V
C4415
R4416
470P
1800
WF51
C4409
C4416
C4418
C4402
0.01
0.047
0.01
0.01
(3.6)
(0)
(0.8)
0.6
3.0
5.1
2.0
2.1
5.1
2.6
0
11
10
9
8
7
6
5
4
3
2
1
VCC
REC
SW
BUFFER
AGC
CTL
IC4401
L
BA7746FS
REC
PRE
R
PRE
Hi-Fi AUDIO
AMP
AMP
AMP
HEAD AMP
GND
14
15
16
17
18
19
20
21
22
23
24
(0.6) (3.7)
(0)
(0)
(0)
(4.1) (4.1)
0
0
0.9
0.9
0.9
0
0
C4412
C4417
WF52
0.1
0.1
TP4401
R4412
R4419
1K
1K
R4418
10
TP4402
C4411
C4410
0.01
0.01
TP4403
C4413
R4413
100P
R4414
C4414
1500
1500
100P
TP4404
UNLESS OTHERWISE SPECIFIED:
WATTAGE OF RESISTORS IS
1/10W.
VJBS5003
I
J

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