Sanyo VHR-VT821A Service Manual page 40

A B
8
FROM/TO SYSCON/SERVO/TIMER
V.H_SW
PICTURE_CTL
NA_REC-H
DUMMY_V.SYNC
SYNC
A_MUTE/TRICK-H
7 IIC_DATA
IIC_CLK
ENV.DET
CTL+
CTL-
V.REC_ST-H
FROM/TO 21PIN/OSD/VPS
2FSC
VIDEO_IN
EE/VV_V_OUT
FRONT_V_IN
6
FROM/TO TUNER/HI-FI
TU_V_OUT
NORMAL_A_IN
NORMAL_A_OUT
HF1
HF2
HF_COM
5
FROM POWER
AT+5.8V
P.CON+5V
GND
V.REC_ST-H
FROM/TO CYL
P.CON+5V
CP4001
TOC-C09X-A1
HF1
9 HF1 (R)
HF_COM
8 HF_COM
4 HF2
7 HF2 (L)
SP-R
6 SP-CH1 (R)
SP_COM
5 SP_COM
SP-L
4 SP-CH2 (L)
EP-R
3 EP/LP-CH1 (R)
FE OSC
EP_COM
2 EP/LP_COM Q4001
EP-L FE OSC COIL
KTC3203_Y
1 EP/LP-CH2 (L)
L4001
1616002
C4004
0.01 F
6 1
2
4 3
3
FROM/TO HEAD AUDIO CONTROL
6
CP4002
IMSA-9604S-06Z13
1 AE HEAD(+)
2 AE HEAD(-)
CTL-
3 CTL-
CTL+
4 CTL+
5 AUDIO REC
6 AUDIO PB
2
NORMAL AUDIO
REC ST SW
Q4002
5.5
KTC3203_Y
R4004
0
NA_REC-H
2.2K
0
TO FULL ERASE HEAD
CP4003
TMC-T02X-E1
1 FE HEAD(GND)
2 FE HEAD(HOT)
1
A B
43
C
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
4
V.ENV
TP4002
NC
C4019
Y/C/AUDIO/CCD
0.001 B
H.SW /HEAD AMP IC
5
TP4001 C4013 IC4001
NC
HA118217F
0.001 B
V.H_SW
C4018
C4017 0.033 B C4026
0.1 F
50V
ENV.DET
C4021
C4022 6.3V 47 KA
SP-L
0.01 F C4023
SP_COM
C4020 0.01 F C4031
0.1 F C4030 0.01 F
SP-R
L4004
0.01 F
P.CON+5V
100uH 0305 C4010
EP-L
0.01 F C4014
EP_COM
C4015 0.01 F
C4011 0.01 F
EP-R
C4016
0.01 F
L4005
50V
P.CON+5V
100uH
0305
C4001
6.3V 47 KA
A_MUTE/TRICK-H
R4002
3.3
8.6
0
8.7
V.REC_ST_SW
9.0
0 Q4003
DTC143EKA
9.0
L4002
R4001
100uH
0305
150
16V
C4040
16V 10 KA
COIL,BIAS OSC
L4006
C4029
R4015
1616001
1 6
5.4 5.7
560P B 470 1/4W
PB SW
2 5
OSC
5.7 Q4005
0
Q4004 3 4
KRA103SRTK
R4016
KTC3203_Y 0.7
5.2 5.2
R4006 4.7K
0
0.6
10K
C4008
0
R4017
0.0047 B
0.7
4.7K
0
NOTE:
THE DC VOLTAGE AT EACH PART WAS
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
MEASURED WITH THE DIGITAL TESTER
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
DURING PLAYBACK
C
D E
(SYSCON PCB)
3
C4068
0.022 B
NC
2.1 2.8 4.7 2.1 2.1 1.7 1.7 1.9 2.1 2.5 2.8 1.4 5.0 5.0 5.0 2.2 4.2 3.2
0
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63
2.5
C GND DO
KIL
X TAL VCO/OSD CR DET 2FSC SERIAL CONT
2.5
INTERFACE
LIMITTER HEAD SW1
2FSCVCO FH SYNC
HEAD SW2 TANC
2.1
KILLER
SW26
DET OUT
COLOR
1.4 ME
3.3 KA KILLER
PB/REC REC REC PB
COMP
DET SECAM ID DET
ENV DISCRI AFC APC APC
HPF
DET
0.1 DET
HA GND DET
2.3 1/2 DOWN 1/2 ACC APC
+ SP2 CONV. DET SW
2FL VCO
PHASE SW
SW32 SP2
2.3
-
4PHASE GEN
SW33
2.3 SW30
SP1
SW29 SW28
- CH2
SW20
P
SP CTL TRAP
SW34 2M LPF
2.3 ACC
+ HPF
R FHTRAP
CH1
SW35 SP1 SEP
EP
5.1
HPF
HA VCC VCA
L SECAM COMP SW19
0 SW27
EP2
MIX
+
SW31 C.K B.E
LEVEL SW18
SW36 EP2 P
CH2 L SECAM
0 LPF ADJ TRAP
- REC
MUTE + R
SW37
0 P SW7
EP1 CH1 SQPB
629 FM P S
-
FROM TRAP AGC EQ DL G
SW38 EP1
0 R EQ DO
MESECAM
+
DET SQPB DET
DET
SW39
3.4 DLIM
1M HPF
NL
+
EMPH
DEMO
1 KA 5.0 DET
SW4 SW5
7M HPF
AVCC
P SW2 FBC/ALC
SUB LPF
0
LAG LERD
PRE R
NC
LPF SW10
AMP VCA
MAIN
5.0 MAIN
DE EMPH
P
FM MOD EMPH
CARRIER
1.9
OFFSET Y LPF
MUTE FO/DEV W.C/DC
SW9
R
ADJ
2.5
SW6
REC EQ
BAND S-DET
SW11
GAP
A.GND 3 1 YVCC
2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
0
2.5 2.5 0 2.5 2.8 2.5 2.6 2.5 2.5 2.5 5.0 1.5 1.5 2.6 0.7 0.6 2.2 3.2 2.7 2.4 2.1 3.1 2.1 1.5 2.1
NC NC
R4012
10K
C4034
R4014
220
10 KA
R4019
18K R4028
5.6K
C4093
470P CH
R4027
C4101 3.9K
470P CH C4054
0.01 B
PB SW
Q4006
KTC3198
7
PB SW
Q4007
KTC3198
CAUTION: DIGITAL TRANSISTOR
D E
F G
1
2
C4071
0.01 F
3.0 5.0 2.1 0.1 3.3 2.8 2.1 2.0 2.8 2.7 0
62 61 60 59 58 57 56 55 54 53 52 51
CVCC 0.4
NTSC/PAL
VCA
N-P CONT
6dB AMP 6dB AMP
OUT 0
LEVEL DET1
CCD
P
-
LPF C SQUELCH SYNC.SEP. 0
R
LEVEL DET2
SW25
0
R
DL +
PULSE
GEN CLEAR SYNC 2.0
C.K LMIT
DELAY CLPH
0
CLPH WHAITH
CCD
SW24 SQUELCH
P N P
GND
C4090
R
MAIN 2.6
CONV2
FEED BACK
MAIN
+ B.D
CLAMP 0.01 F
CONV1 5.2
SW22
P
SW23 VIDEO ALC
R
P R
3.8
P SW21
R BPF
5.2
CLOCK
DEIVER
5.2
3.5
C Y
CCD CCD
5.2
SW17
P
EDGE Y APA
0.1
DELAY
SW16 MODE
R
CONT
R D.E. CCD
5.2
REC
NL
N.C. VCC=5V
DE EMPH AGC DEL
P 3.3
PB ALC
SW115 0
VIDEO AGC
SW14
YNR CH3 CH1
REC
DO 0
DO
CH2
R P R
ATT ATT ATT
0
SW12
(-10dB) (-10dB) (-10dB)
SW15
CLAMP C4091
P
2.8
CLAMP LPF
P R
YGND AGC
50V 1
19 20 21 22 23 24 25 26 27 28 29 30
0 2.7 1.7 2.8 C4088
C4092
50V 1 KA
50V 1
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
6
W805
SYNC
5
L4013
P.CON+5V
100uH
0305
4
VIDEO_IN
KA
FRONT_V_IN
TU_V_OUT
KA
3
2
PCB010
VMA231
1
H
44