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A B C D E F G H


AIWA VX-T147 HEAD AMP SCHEMATIC DIAGRAM
8 (HEAD AMP PCB) 8




4
3
2
1
52492-0420
FROM TO CYL

CP4101_2


CH1(R)F


CH2(L)F
CH1/2 S
NC




15P CH
C4104
7 7



C4119




0.01 B
C4110
33P CH

C4120




R4111
33P CH




0.001 B


0.001 B




20K
C4115


C4114




0.001 B


0.001 B
C4113


C4112
6 6
46
44
V V: THE PICTURE ON SCREEN APPEARS DURING PLAYBACK.
45

NC NC 0 0 0.7 2.16 0 0.7 2.1 4.99 NC 0 0.9
0.2 0.2 44 NOTE: THE RESISTOR MARKED F IS FUSE RESISTOR.
24 23 22 21 20 19 18 17 16 15 14 13
THE ALUMI ELECTROLYTIC CAPACITOR MARKED NP




REC ON




REC ON




REC ON
PB OFF
EP/SP




REC ON




PB OFF




PB OFF
REC ON
PB OFF
VCC2




PB OFF
EP A1 A1 IS NON POLAR ONE.




LA7411M
(LP) VCC A2 VCC A2




HEAD AMP
1.5 HL REC
SP CURRENT AMP
SW 30 REC MUTE SW30
BUF AGC NOTE: THE DC VOLTAGE AT EACH PART WAS




1K
ON REC/PB 5K
H CH 3.2 ENVELOPE PB MEASURED WITH THE DIGITAL TESTER




IC4101_2
REC AGC H.SYNC




BUF
1.0 OFF 2.0 PB DET REC DURING PLAYBACK
5 L CH DET 5
1 2 3 4 5 6 7 8 9 10 11 12
5.0 1.2 0.2 0 0.45 0 2.2 1.1 0 2.9 5.0 5.0
L4101 NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
43
39 40 41 42 R4109 OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
100uH
1.5K




6.3V 220 KA
0.01 B
C4127




C4107
F
C4106

1
FROM/TO CYL




C4108

F
4 CP4102_1 4




1
52492-0520
CYL_PG-A CYL PG 1
CYL+B-A CYL +B 2
CYL_FG-A CYL FG 3




R4113

330
W801
GND_B CYL GND
0 4
CYL_DRIVE_A
CYL DRIVE 5




2.2
R4104
FROM/TO CAPSTAN DD UNIT 5.0 1.6 1.5K
3 BUFFER 3
Q4101
2SC2412K
10P CH
CP4105
C4103
TKC-F09X-L1
1 CAP-M F/R
2 GND
3 VCO 120K

R4103
0.33 F




4 CTL


1K
C4105




R4102

5 MOTOR GND
6 VCC
7 FG
FROM/TO A/C HEAD
8 I LIMIT
9 V.REF
CP4106
2 2
177640-6
TO LOADING MOTOR C4102
1 AUDIO PB
0.1 B
1 LDM+ 2 AUDIO REC CAPSTAN AFC SIGNAL
2 LDM- 3 CTL+
CYL_DRIVE_A




CD4102 8283_0212_00_000 RECORD LUMINANCE SIGNAL
CYL_PG-A
CYL_FG-A




4 CTL-
GND_B


CYL+B-A




5 AE HEAD(-) PLAYBACK LUMINANCE SIGNAL
6 AE HEAD(+)
RECORD COLOR SIGNAL
PLAYBACK COLOR SIGNAL
NC NC NC NC NC NC
AUDIO SIGNAL(REC)
V.REC ST-H




AUDIO SIGNAL(PB)
MOTOR GND




PB Y/C,REC-C




AE HEAD(+)
CYL DRIVE




CAP-M_F/R




AUDIO REC




AE HEAD(-)




1 1
CYL GND




FROM/TO Y/C
FROM/TO SYSCON




P.CON 5V