JVC HR-S5950EU, Service Manual

Page: 51 / 81

1
2
3
5
4
A B C D
4-26 4-25
MAIN (SECAM) SCHEMATIC DIAGRAM [MS MODEL] 4.12
p40044001a_rev0
C322
C315 C313
C319
SECAM_PB_COLOR
SECAM_DET
SECAM_REC_COLOR
V_TO_OSD
SW5V
C.SYNC
GND
Fsc
SECAM[H]
R328
R329
C302
R326
R327
EE[L]
PB_FM
L301
C323
Q301
R314
R302
C303 C304
C309
C305
C310
C311
L302
R303
C307
R305
R308
R307
R306
B301
Q311
Q312
R301
R321
C301
Q302
C312
C318 C320
C316
L303 R311
C314 R310
R313
C317
R312
R315
R309
R304
R316
C308
C321
IC301
0.47
10 0.47
1
0
2.2
10
µ
47
24k
120k
0.0068 0.0068
0.1
0.01
0.01
0.01
6.8
µ
27k
150p
47k
2.2k
2.2k
27k
27k
150p
0.001
0.022 0.01
0.01
27
µ
3.9k
470p 22k
22k
680p
2.7k
560k
820
Ω
6.8k
220k
0.01
300p
/50 /50
/50
OPEN
/50
OPEN
OPEN
/6.3
2SA1576A/QR/
2SB1218A/QR/
2PA1576/R/
±0.5%
OPEN
OPEN
OPEN
OPEN
DTA144WUA
UN511E
RN2309
PDTA144WU
±2%
LA7358
FILT.
0 3 MAIN
TO
(SECAM)
VIDEO/N.AUDIO
SYNC GAIE
GEN./V-SEP
B BGP
GEN
AFC
4.43MHZ
VCO
SECAM
DET
4.3MHZ
OSC
F0
ADJ.
ADJ.
F0
PHASE
LOGIC
DET
FROM LIM
OSC
1.1MHZ
CA VA
IREF
MODE
CTL
X2
2.2M
BPF
X2
4.3M
BPF
VCC
GND
PB
MUTE
4.2V
REG
R/P
AGC
AMP DET
AGC
PB
MUTE
IREF
LIM
4.3MHZ
BPF
B
1.1M
BPF
SYNC
GATE
1/4
SYNC
GATE
TO MUTE
TO
REC MUTE
FILT.
LIMITER
R
P
R
P
R
P
R
P
R
P
VA CA
T
O
PHASE DET
PB MUTE
TO
B
ADJ
HOLD
DET SENSE
CONTROL
CPU PIN FUNCTION 4.13
The Parts Number, value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts, refer to the Parts List. Note :
PIN NO. LABEL IN/OUT FUNCTION
1
CTL(+) IN/OUT CTL(+) SIGNAL
2
SVSS - GND
- CTL REFERENCE VOLTAGE
3
CTL(-) IN/OUT CTL(-) SIGNAL 4
CTLBIAS
CTLREF
- CTL BIAS VOLTAGE 5
CTLFB IN CTL PULSE FEEDBACK
6 CTLAMPOUT OUT CTL PULSE OUTPUT
7
CTLSMTIN IN CTL PULSE INPUT 8
CFG IN CAPST
IN
IN
FILTER OUTPUT FOR HORIZONTAL SYNCHRONIZING OF OSD CHARACTER
COMPOSITE SYNC/HORIZONTAL SYNC
AFC CLOCK (SYNC SEPARATOR FOR OSD / EXTERNAL CIRCUIT FOR AFC)
AFC CLOCK (SYNC SEPARATOR FOR OSD / EXTERNAL CIRCUIT FOR AFC)
COMPOSITE VIDEO SIGNAL INPUT(1)
COMPOSITE VIDEO SIGNAL OUTPUT
COMPOSITE VIDEO SIGNAL INPUT(2)
AN FG PULSE INPUT 9
SVCC -
OUT
SYSTEM POWER 10
AVCC - SYSTEM POWER FOR ANALOG CIRCUIT
11
12
AFCPC
AFCOSC
AFCLPF 13
VIDEO_ENV IN
SCR(H)
AUTO TRACKING DETECT/INPUT THE AVERAGE OF PLAYBACK VIDEO SIGNAL
14 CSYNC/HSYNC
15 VLPF/VSYNC
16
CVIN1
CVIN2 17
18 OVCC
19
IN
IN
CVOUT
20
AFC IN TUNING CLOCK
21
RF AGC IN
22 FSCIN IN FSC INPUT FOR OSD
FSC OUTPUT FOR OSD
23 AVSS - GND FOR
- SYSTEM POWER
- GND
- NC
ANALOG CIRCUIT
24
OUT
OUT
OUT
OVSS
FSCOUT
25
26
27
28
29 START_SENSOR IN START SENSOR
KEY2 IN OPERATION CONTROL SIGNAL
IN SCRAMBLE CONTROL INPUT (SCRAMBLE:H)
30 KEY1 IN OPERATION CONTROL SIGNAL
31 END_SENSOR IN
IN
END SENSOR
A.ENV/ND(L) IN AUDIO PB FM ENV.INPUT/NON HiFi MODE:L
32
33 LSD - MECHANISM MODE DETECT(D)
LSC - MECHANISM MODE DETECT(C)
LSB - MECHANISM MODE DETECT(B)
34
35 NORM/MESEC/S NORMAL MODE:L/MESECAM MODE:M/S VHS MODE:H
LM_FR(LMC1) OUT
OUT
LOADING MOT
PARALLEL CONTROLLER FOR CH+ IC (IN/OUT SWITCH)
D_A OUT LED DRIVE
D_B OUT LED DRIVE
D_C OUT LED DRIVE
D_D OUT LED DRIVE
D_E OUT LED DRIVE
D_F OUT LED DRIVE
D_G
SAT_CTL
OUT LED DRIVE
P.CTL(H) OUT
OUT
OUT
CONTROL SIGNAL FOR SWITCHING POWER SUPPLY
CONTROL SIGNAL FOR SATELLITE RECEIVER
CAPSTAN MOTOR REVERSE CONTROL (REV:H) CAP_REV(H)
PB_CTL2
OR DRIVE
36
37
38
39
40 POWER_DET IN DETECTION SIGNAL
S.CASS[H]/JSA IN
DETECTION SIGNAL FOR SVHS CASSETTE (SVHS:H)
/INPUT FOR THE JOG SHUTTLE
FOR POWER DOWN OF AC POWER SUPPLY
41
REC_SAFETY IN REC SAFETY SWITCH DETECT (SW ON:L)
42
43 SECAM_DET(H) DETECTION SIGNAL FOR SECAM ON P.B MODE (SECAM:H)
44
45
VCC - SYSTEM POWER
46
47
48
49
50
51
52
53
54
SP_FG IN DETECTION SIGNAL FOR SUPPLY REEL ROTATION/TAPE REMAIN
55
TU_FG IN
IN
DETECTION SIGNAL FOR TAKE-UP REEL ROTATION/TAPE REMAIN
56
PIN NO. LABEL IN/OUT FUNCTION
57
58 DIG5 OUT LED DRIVE
DIG4 OUT LED DRIVE
DIG3 OUT LED DRIVE
DIG2 OUT LED DRIVE
DIG1 OUT
OUT
LED DRIVE
59
60
61
62
63
64
65
X2 - TIMER CLOCK (32.768KHz)
X1 - TIMER CLOCK (32.768KHz)
- RESET TERMINAL
66
67
OSC1(IN) - MAIN SYSTEM CLOCK(10MHz)
OSC2(OUT) - MAIN SYSTEM CLOCK(10MHz)
68
69 POWER_DET DETECTION SIGNAL FOR POWER DOWN OF AC POWER SUPPLY
LSA IN
IN
IN
MECHANISM MODE DETECT(A)
P50_OUT/ET_REC(H) CONTROL SIGNAL FOR TV LINK/ET REC MODE:H
OUT
OUT
P50_IN/VHS(H) CONTROL SIGNAL FOR TV LINK/VHS MODE(H) 70
VCC - SYSTEM POWER
VCC - SYSTEM POWER
VSS - GND
71 PROTECT DETECTION SIGNAL FOR SW POWER SUPPLY
IN RC REMOTE CONTROL DATA INPUT
IN SW2/CH_SW TUNER SYSTEM MODE:L /CHANNEL SWITCHING SIGNAL
FWE FLASH WRITE ENABLE
72
TU_A_MUTE(H) OUT
OUT
TUNER
SB_GAIN OUT VOLTAGE CONTROL SIGNAL FOR VIDEO FREQUENCY RESPONSE
AUDIO MUTE CONTROL (MUTE:H)
73
74
A.MUTE(H)
75
I2C_CLK2 OUT SERIAL DATA TRANSFER CLOCK FOR MEMORY IC
I2C_CLK OUT SERIAL DATA TRANSFER CLOCK FOR MEMORY IC
76
I2C_DATA2 IN/OUT SERIAL DATA TRANSFER OUTPUT FOR MEMORY IC
I2C_DATA IN/OUT SERIAL DATA TRANSFER OUTPUT FOR MEMORY IC
77
78
79
80
81
82
RES
83
84
VSS
VCL
- GND
- NC
- Y/C OUT[H]/EE:L
-
MODE
CH+A/CONV_CTL
SYSTEM POWER
85
SP_SHORT(H) OUT MODE SELECT
86
LP/EP_SHORT(H) OUT MODE SELECT
OUT HIFI AUDIO SOUND RECORDING START
OUT
OUT
AUDIO MUTE CONTROL (MUTE:H)
87
88
H.REC_ST(H)
89
90
91
92
SYNC_DET(H)/P.MUTE(L) IN/OUT
DETECTION OF VIDEO SYNC SIGNAL (DETECTED:H)/
PICTURE CONTROL (MUTE:L)
93
MESECAM(H) OUT MESECAM:H
SECAM(H)
PB_CTL1
OUT
OUT
COLOUR SYSTEM SECAM:H
94
95 PAL_PB(H) PLAYBACK MODE FOR PAL:H
OUT N.REC_ST(H) NORMAL AUDIO SOUND RECORDING START
OUT N.REC_ST(H) NORMAL AUDIO SOUND RECORDING START
96
97 Y/C_OUT/EE(L)
98
C.SYNC IN
IN
COMPOSITE SYNC
99
A.FF OUT AUDIO FF OUTPUT
D.FF OUT
DFG DRUM FG PULSE INPUT
100
101 CAPPWM OUT CAPST
CTL GAIN OUT CONTROL AMP OUT FREQUENCY RESPONSE SWITCHING
AN MOTOR CONTROL
102 AGC_CTL/SW1 AGC CONTROL INPUT/TUNER SYSTEM MODE:H
103
104
105
106
107
108
109
110
111
112
PIN NO. LABEL IN/OUT FUNCTION
CHANGES IN ATS+IC OUTPUT AS CAUSED BY CHANGES IN RECEIVER SENSITIVITY
WHEN THE SAME CHANNEL IS RECEIVED MORE THAN ONCE ARE INPUT.
<SYSCON IC3001>
CH+B
AV1 OUTPUT SWITCH CONTROL / R/F CONVERTER ON/OFF CONTROL
OUT AV2 OUTPUT SWITCH CONTROL
FULL_E_ON(H)/YCO IN
IN
FULL ERASE ON:H
CAP_CTL_V OUT
DRUM_CTL_V OUT
CAPSTAN MOTOR CONTROL
DRUM MOTOR CONTROL
V.PULSE OUT V.PULSE ADDITION TIMING CONTROL
ROTATION DETECTION SIGNAL FOR DRUM MOTOR/TIMING
CONTROL SIGNAL FOR REC
TU_V_MUTE(H) OUT TUNER VIDEO CONTROL (MUTE:H)
PARALLEL CONTROLLER FOR CH+ IC (IN/OUT SWITCH)