JVC HR-XVC1UJ/M Service Manual page 35

D/HEAD AMP SCHEMATIC DIAGRAM
PCB) (HR-XVC1UJ/M)
4.9
R129
BUFFER
3.9 Q109
1.8K
2SC2412K
3.3
1/4W
16V
R127
17
680K
NC
2.1 4.8 4.1 3.2 3.3 3.2 4.9 4.9 1.2
51 50 49 48 47 46 45 44 43
ALWAYS VDD 4Fsc
CC
5V
320FH
SLD
VX01 B
VCO
P R
TIMMING
REC PB REC
APC APC AFC DRIVER
CCD
BEFORE
R P
BGA
BGA
AFTER
CNC
BGA
R P
PB
AMP
3.58M
BPF2
B.D
B-UP
AMP P
3.58M
ACC
AMP BPF1
P P R
PB-C
ACC
DET
VIDEO
AGC
YNR/COMB
P R R
P
1/2
R
DETAIL
N.L.
CLAMP
FBC
ENH PB-C
DEEM
P
Y-LPF
R
NL NL
Y/C
NC1
P
EMPHA EMPHA MIX
R
R
P
FM
MOD
R-EQ
NORMAL
QV/QH
TEST
DOUBBLE FM
SUB
LIM DEM
LPF
LINE
REC
MAIN
AMP
FM-EQ
DE-EM V.SYNC
FM PB
S-EQ
P R
P R AGC FM EQ P R
VHS
SOPB
C
MUTE
P
PHASE PHASE MAIN
AUTO FM
EQ EQ
BIAS EMPHA
AGC
Y-GND
fo-ADJ Q-ADJ FIL FIL
10 11 12 13 14 15 16 17 18
0.8 4.8 1.1 1.1 1.4 2.0 0 2.6
NC 2.6
19
V.ENV
18
TP101
NC
E DC VOLTAGE EACH PART WAS
ASURED WITH THE DIGITAL TESTER
RING PLAYBACK.
The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only.
Note :
When replacing the parts , refer to the Parts List.
E
C142
47 YK
C143
0.1 F
C141
0.01 B
2.2 0.8
42 41
BUFFER
CLOCK
0
Q107
VSS
PLL
2SA1037AK
1.6
OUT
1.6
OUT
0 0 2.2
AUTO-BIAS
VSS
3.2
CLAMP
IN
C133
2.5
50V 1 YK C137
VCA
3.2
VCA
50V 1 YK
C134
3.3
CLAMP
50V 1 YK C138
2.6
VCP
50V 1 YK
2.6
1
2
3
C139
4.1
REG
4V
0.1 F
2.3
C135
BAL
2.3
TC1
50V 0.22 YK
2.1
NC
C136
1.6
AGC
TC2
35V 22 YK
3.6
6DB
4.1
SYNC
SEP
5.0
SEP
4.4
Y-VCC
C132
3.2
50V 1 YK
2.1
B
S
DET
R120 3.6
19 20
220
0.2 2.8
CAUTION: DIGITAL TRANSISTOR
E
F
R124
82K
R122
100K
TU/REAR_V_IN
FRONT_V_IN
C140_1
DVD_V_OUT
16V 4.7 KANP
16
Y/C_VIDEO_OUT
DUMMY_V.SYNC
L104_1
R121
P.CON+5V
1K 1/4W 22uH 0305
4.2
BUFFER
Q106
2SA1037AK
0
RECORD COLOR SIGNAL
RECORD LUMINANCE SIGNAL
AUDIO SIGNAL(REC)
AUDIO SIGNAL(PB)
PLAYBACK COLOR SIGNAL
PLAYBACK LUMINANCE SIGNAL
TUNER VIDEO SIGNAL
F
G
FROM DVD IN/OUT
DVD_V_OUT
FSC
FROM/TO TUNER/JACK
FRONT_V_IN
TU/REAR_V_IN
Y/C_VIDEO_OUT
FROM/TO VCR SYSCON
Y/C_CLK
Y/C_DATA
Y/C_CS
DUMMY_V.SYNC
V.REC_ST-H
C.ROTARY
AUDIO_MUTE-H
CTL-
CTL+
H.AMP_SW
COMP
ENV.DET
H.SW
C.SYNC
C.SYNC
G
H
8
7
6
5
4
3
2
PCB010
VMB253
1
H
2-18