Y/C/Audio/Head Amp - Orion MD17 Service Manual

A B
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
(SYSCON PCB)
8
FROM POWER
GND
Y/C_AUDIO_OUT
7
P.CON+9V
P.CON+5V_B
FROM/TO CYL
CP4001_1
TOC-C04X-B1
4 SP-CH1 (R)
3 SP_COM
2 SP-CH2 (L)
1 NC
6
P.CON+5V_B
TO FULL ERASE HEAD
5
CP4004
TMC-T02X-E1
2 FE HEAD(GND)
1 FE HEAD(HOT)
FROM/TO HEAD AUDIO CONTROL
CP4005
MESECAM_M
IMSA-9604S-06Z14 20
1 AE HEAD(+)
2 AE HEAD(-)
VCR_A_MUTE
CTL-
3 CTL-
CTL+
4 CTL+
4
5 AUDIO REC
6 AUDIO PB
3
2
1
A B
G-1
C
4.8
C4112
1.5
12
AMP
0.01 B
0.9
Q4008
NC
2SC2412K
V.ENV
TP4002
L4017
JWF-50K-1
22uH
AMP
C4008
Q4007 R4055
2SC2412K 330
0.1 B
6.3 1.4
2.0
R4053 R4054
560K 330K
R4001
1.5K
C4002
C4010
Y/C/AUDIO/CCD/HEAD AMP IC
H.SW
0.047 B
TP4001 IC4001
0.001 B
JWF-50K-1 HA118217F
NC
11
15.6KHz TRAP
NC
L4001 C4018 0.033 B
2623003
C4004
C4024
0.012 B C4014 0.1 B
50V 3.3 KA
NC
C4019 0.01 B
C4020 0.01 B
C4027 0.01 B
C4028 0.01 B
L4004
C4015 6.3V 47 KA
100uH 0405
C4097
0.01 B
C4098
0.01 B
C4025
L4006
1 B
1mH0607
R4008_1
1K
R4057
W911
47K +-1%
R4021
18
22K +-1%
19
COIL,BIAS OSC
L4005
C4001
1626008
C4013
6.3V 33 KA
R4002 220P CH
4.6 4.9
1 6
3.3
2 5 V.REC ST SW
OSC
4.9
Q4003
Q4002 3 4
DTA124EKA
2SD734
4.8 4.8
4.7 R4004
R4056
0
V.REC_ST_H
0
10K
2.2K
0
C4006
NORMAL AUDIO
0.0047 B
REC ST SW
Q4001
2SD734
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
NC
NC
0 2.1 2.8 4.5 2.6 2.1 1.0 1.7 2.2 2.1 2.7 2.8 0 4.8 4.8 2.4 0 4.8 4.8
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
2.5 C GND DO
KIL CVCC
X TAL VCO/OSD CR DET 2FSC SERIAL CONT
1.2 INTERFACE
LIMITTER HEAD SW1
2FSCVCO FH SYNC
HEAD SW2 TANC P
2.6
KILLER
SW26
DET OUT R
COLOR
ME SW25
1.5 KILLER
PB/REC REC REC PB
COMP R
DET SECAM ID DET DL
ENV HPF DISCRI AFC APC APC
DET
DET
0
HA GND DET
1/2 DOWN 1/2 ACC APC DELAY
2.2
+ CONV. DET SW
SP2 2FL VCO
PHASE SW
P
SW32 SP2
-
2.2 4PHASE GEN
SW33
SW30
SP1
2.1 SW29 SW28
- CH2 SW20
P SW23
SP CTL TRAP
SW34 2M LPF
ACC
+ HPF
2.2
R FHTRAP
CH1
SW35 SP1 SEP
EP
4.8
HPF
HA VCC VCA
L SECAM COMP SW19
SW27
EP2
0 MIX
+
SW31 C.K B.E
LEVEL SW18
SW36 EP2 P
CH2 L SECAM
LPF ADJ TRAP
0 - REC
MUTE + R
SW37
P SW7
EP1 CH1 SQPB
0 629 FM P S
-
FROM TRAP AGC EQ DL G
SW38 EP1
R EQ DO EDGE
MESECAM
0 +
DET SQPB DET DELAY
DET
SW39
DLIM
0.5 1M HPF
NL NL
+
EMPH DE EMPH
DEMO
DET
SW5
4.8 SW4 7M HPF
AVCC
P SW2 FBC/ALC
SUB LPF
0 LAG LERD
PRE R
LPF SW10
AMP VCA
MAIN
MAIN
4.8 DE EMPH
P
FM MOD EMPH R P
CARRIER
2.5 OFFSET
Y LPF
MUTE FO/DEV W.C/DC
SW9
R P
ADJ
SW6
2.5 REC EQ
BAND S-DET
CLAMP
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 19 20
R4015
2.5 2.5 0 2.5 0 2.9 2.5 2.5 2.5 2.5 2.5 4.8 1.4 1.4 3.1 0.7 0.6 2.1 3.1
8.2K NC
R4049
2.2M
17
R4023
6.8K
R4025
8.2K
R4011
2.2K +-1%
R4012
0
BUFFER
4.7K
PB SW
Q4010
Q4004
2SA1037AK
2.8
0.7
2SC2274 2.8
0 2.2
2.2 BUFFER
0 Q4011
0 PB SW
2SA1037AK
R4013
Q4005
2SC2274
0.7
4.7K
SECAM SW
0
Q4012
DTC144EKA
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
D E
F G
R4044_1
L4002
82
100uH 0305
BUFFER
Q4006
2SA1037AK 3.1
R4040
2.5
S820Y
100
0
4.8 2.1 2.9 3.0 0.1 2.8 2.1 2.0 2.8 2.5 0.4
60 59 58 57 56 55 54 53 52 51
15
NTSC/PAL
VCA
N-P CONT
0.4
6dB AMP 6dB AMP
OUT
LEVEL DET1
R4042
CCD
0
-
LPF C SQUELCH SYNC.SEP.
100
LEVEL DET2
0
+
PULSE
0
GEN CLEAR SYNC
C.K LMIT 0
CLPH
CLPH WHAITH
CCD
SW24 SQUELCH
N P
GND 0
C4080
R
MAIN
CONV2
FEED BACK
MAIN 2.5
+ B.D
CLAMP 0.01 B
CONV1
SW22
P
VIDEO ALC
R 4.8
P R
P SW21
R BPF 1.8
CLOCK
4.8
DEIVER
4.8
C Y
CCD CCD 3.0
P SW17
4.8
Y APA
SW16 MODE
R
CONT
0.1 L4015
R D.E. CCD
REC
N.C. VCC=5V
AGC DEL 4.8
C4082 100uH 0607
P
PB ALC
3.0
180P CH
SW115
VIDEO AGC
SW14
YNR CH3 CH1 0
REC
DO
DO
CH2
R
0 D4002
ATT ATT ATT
SW12
(-10dB) (-10dB) (-10dB)
SW15
CLAMP
0
MTZJ6.8B C4086
LPF
P R S820X
YGND AGC 2.8
10
21 22 23 24 25 26 27 28 29 30
2.7 2.4 2.1 3.1 2.1 1.4 2.1 0 2.8 1.9 2.8
C4074 13
16V 10 KA
C4077_1
W828
50V 3.3 KA
PB SW
Q4015
0
DTC144EKA
0
2.3
BUFFER
C4117 L4020
C4114 2.8 Q4014
2.1
2SA1037AK
0
2.1
18P CH 100uH
50V 2.2 1.5
5.0
KANP BUFFER
0
Q4013
0 NC NC NC 0
2SA1037AK SECAM SW
0
Q4016
1 2 3 4 5 6
0
KRC103RTK
5.0
12 11 10 9 7
0 8
CAUTION: DIGITAL TRANSISTOR CAUTION: DIGITAL TRANSISTOR
F G
H
8
FROM/TO SECAM CHROMA/HI-FI
SECAM_SW
14
Y/C_VIDEO_OUT SEC_PB_C
LOW_C
EE/VV
GND
V.SYNC
LOW_C2
7
TO SOUND AMP
Y/C_AUDIO_OUT
GND
FROM CHROMA
TU_VIDEO
TU_AUDIO
SEC_PB_C
FROM/TO 21PIN/IN/OUT
FRONT_VIDEO
V.SYNC
REAR_VIDEO
6
FRONT_AUDIO
REAR_AUDIO
Y/C_VIDEO_OUT
Y/C_AUDIO_OUT
TO T'TEXT
Y/C_VIDEO_OUT
FROM/TO MICON
VCR_A_MUTE
H.SW
5
SCL
SDA
D_V_SYNC
V.REC_ST_H
ENV_DET
CTL+
P.CON+5V_B
CTL-
MESECAM_M
SECAM_L
VV_H
W900
REAR_VIDEO
4
1 B
C4079
FRONT_VIDEO
1 B
TU_VIDEO
3
VV_H
2
SECAM_SW
PCB010
VM9171
1
H
G-2