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Servo/System Control Block Diagram
(DECK
ASSEMBLY
)
AC HEAD ASSEMBLY
CONTROL
5
CTL(+)
HEAD
6
CTL(-)
CYLINDER ASSEMBLY
PG
SENSOR
DRUM
M
MOTOR
M
LOADING
MOTOR
MAIN CBA
CL402
5
6
Q202
Q201
ST-SENS.
END-SENS.
SENSOR CBA
SENSOR CBA
(ST-SENSOR)
(END-SENSOR)
CAPSTAN MOTOR
C-F/R
CAPSTAN
M
AL+12V
MOTOR
D/L+12V
P-ON+5V
GND
C-FG
C-CONT
GND
D-FG
LD-CONT
D-CONT
D-PG
1-8-1
BLOCK DIAGRAMS
IC201
(SERVO/SYSTEM CONTROL)
AL+5V
D203
RS201
S-LED
REMOTE
14
REMOTE
SENSOR
WF3
J116
CTL
97
CTL AMP-OUT
95
CTL(+)
94
CTL(-)
SW212
AL+5V
LD-SW
1
LD-SW
9
ST-SENS.
7
END-SENS.
80
T-REEL
Q206
T-REEL
Q205
TIMER+5V
RESET
34
RESET
CN201
66
C-F/R
1
2
AL+12V
3
D/L+12V
P-ON+5V
4
5
6
87
C-FG
7
76
C-CONT
8
9
89
D-FG
10
82
LD-CONT
11
77
D-CONT
12
90
D-PG
SW201
SW205
KEY
KEY 0
5
SWITCH
SW206
SW210
KEY
KEY 1
6
SWITCH
P-ON-H
P-ON-H
31
P-DOWN
P-DOWN
84
D204 REC
REC LED
23
REC LED
22
SCL
71
6
SDA
72
5
2
I
C-OPEN
45
7
SP-MUTE
12
A-MUTE
65
D-REC-H
44
EXT-H/INSEL
REC-SAFETY
33
SW211
REC
SAFETY
REC/EE/PB
27
C-SYNC
74
DV-SYNC
13
V-ENV
10
ROTA
15
RF-SW
18
TAPE-SPEED
TAPE-SPEED
28
EXT-H/INSEL
EXT-H/INSEL
29
RENTAL
30
SPL-PLAY
32
1-8-2
TO POWER
SUPPLY BLOCK
AL+5V
IC202
(MEMORY)
SCL
SDA
CS
SCL
TO CHROMA
SDA
/TUNER
2
I
C-OPEN
BLOCK
SCL
SDA
SP-MUTE
TO AUDIO
A-MUTE
BLOCK
D-REC-H
REC/EE/PB
C-SYNC
DV-SYNC
V-ENV
ROTA
TO VIDEO
RF-SW
BLOCK
RENTAL
SPL-PLAY
T7300BLS
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Summary of Contents for Emerson SC319C
- Page 1 BLOCK DIAGRAMS Servo/System Control Block Diagram IC201 (SERVO/SYSTEM CONTROL) SW201 SW205 (DECK ASSEMBLY KEY 0 SWITCH MAIN CBA SW206 SW210 AL+5V KEY 1 SWITCH D203 RS201 S-LED REMOTE P-ON-H REMOTE P-ON-H TO POWER SENSOR P-DOWN SUPPLY BLOCK P-DOWN AC HEAD ASSEMBLY J116 CL402 CTL AMP-OUT...
-
Page 2: Video Block Diagram
Video Block Diagram REC VIDEO SIGNAL PB VIDEO SIGNAL MODE: SP/REC MAIN CBA J188 Q401 V-OUT BUFFER IC401 VIDEO/AUDIO SIGNAL PROCESS Q402 CCD 1H TO CHROMA/ VIDEO BUFFER DELAY TUNER BLOCK CHARA LUMINANCE DOC YNR Y/C COMB SIGNAL PROCESS V-AGC TU-VIDEO TUNER TO CHROMA/... -
Page 3: Audio Block Diagram
Audio Block Diagram PB-AUDIO SIGNAL REC-AUDIO SIGNAL Mode : SP/REC MAIN CBA IC301 IC801 (AMP) OUTPUT FROM/TO JK801 TU-AUDIO CHROMA/TUNER LIMITER FM DET EARPHONE JACK MUTE BLOCK FROM/TO TUNER SERIAL SERVO/SYSTEM CONTROL BLOCK LINE/PB CN802 SP801 JK702 SP-MUTE SPEAKER A-IN SP-GND FROM PIN 12 OF IC201... - Page 4 Chroma/Tuner Block Diagram REC-AUDIO SIGNAL REC VIDEO SIGNAL PB VIDEO SIGNAL Mode : SP/REC MAIN CBA J191 RF AGC-OUT IC301 VIDEO/AUDIO/CHROMA/DEFLECTION/IF TU001 CF301 Q301 4.5MHz BUFFER TU VIDEO TO VIDEO BLOCK TRAP SF001 CF302 IF SIGNAL 4.5MHz CONTROL TU AUDIO TO AUDIO BLOCK FILTER CIRCUIT SERIAL...
- Page 5 CRT/H.V. Block Diagram REC VIDEO SIGNAL PB VIDEO SIGNAL Mode : SP/REC IC551 (V-DEFLECTION CONTROL) L551 WF13 DEFLECTION-YOKE THERMAL PROTECTION DRIVE Q572 H.DRIVE PUMP DRIVE WF12 Q571 T572 CN571 H.OUTPUT FROM POWER SUPPLY BLOCK FOCUS VR DEF+B T571 F.B.T. ANODE FOCUS SCREEN ANODE...
-
Page 6: Power Supply Block Diagram
Power Supply Block Diagram CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, CAUTION ! REPLACE ONLY WITH THE SAME TYPE FUSE. NOTE : Fixed voltage power supply circuit is used in this unit. ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES The voltage for parts in hot circuit is measured using If Main Fuse (F601) is blown, check to see that all components in the power supply 4A/125V... - Page 7 Main 1/4 Schematic Diagram MAIN 1/4 Ref No. Position IC201 IC202 TRANSISTORS Q205 Q206 TEST POINTS J116 CONNECTORS CL201 1-9-3 1-9-4 1-9-5 T7300SCM1...
- Page 8 Main 2/4 Schematic Diagram REC Video Signal PB Video Signal REC Audio Signal PB Audio Signal MAIN 2/4 Ref No. Position IC401 IC801 TRANSISTORS Q401 Q402 Q491 Q871 Q872 Q873 Q874 Q875 TEST POINTS J187 J188 J189 J190 CONNECTORS CL401 CL402 CL403 CN802...
- Page 9 Main 3/4 Schematic Diagram REC Video Signal PB Video Signal REC Audio Signal PB Audio Signal MAIN 3/4 Ref No. Position IC301 TRANSISTORS Q301 Q302 TEST POINTS J191 J233 J234 J239 J262 J264 CONNECTORS CN303 1-9-9 1-9-10 1-9-11 T7300SCM3...
- Page 10 Main 4/4 Schematic Diagram CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, CAUTION ! REPLACE ONLY WITH THE SAME TYPE FUSE. Fixed voltage power supply circuit is used in this unit. ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES NOTE : If Main Fuse (F601) is blown, check to see that all components in the power supply D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.
- Page 11 WAVEFORMS WAVEFORM NOTES INPUT: NTSC COLOR BAR SIGNAL OTHER CONTROLS: CENTER POSITION VOLTAGES SHOWN ARE RANGE OF OSCILLOSCOPE SETTING 5 ms 0.5 V 20 µs 10 V 5 ms 20 µs 0.5 V 0.5 ms WF13 MAIN 4/4 SCHEMATIC DIAGRAM WF17 MAIN 1/4 SCHEMATIC DIAGRAM WF9 MAIN 2/4 SCHEMATIC DIAGRAM WF1 MAIN 2/4 SCHEMATIC DIAGRAM...
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Page 12: Wiring Diagram
WIRING DIAGRAM WIRING DIAGRAM FOR SECTION 2 (DECK MECHANISM) ANODE CN802 CL802 SP801 SPEAKER SP-GND CAPSTAN MOTOR CRT CBA FOCUS LOADING CL201 BT5300F01012 MOTOR C-F/R AL+12V D/L+12V SCREEN CN501 CL504B CL504 AL+5V CYLINDER ASSEMBLY C-FG GREEN GREEN C-CONT SENSOR BULE BLUE D-FG LD-CONT...