Block Diagram - Panasonic WV-CM1020 Service Manual

MAIN BOARD
CN101
VIDEO A
INPUT/OUTPUT
CONNECTORS
CN102
VIDEO B
INPUT/OUTPUT
CONNECTORS IC101
2-INPUT SINGLE
VIDEO SWITCH
CN101 Q101
VIDEO A 3 IN2
IN
PRE-AMP.
VIDEO A
Q103 30K
BUFFER
OUT
VIDEO A OUT 7
75 Ω MUTE 30K
CN102 Q102
1 IN1
VIDEO B
IN
"L" : IN1
PRE-AMP.
VIDEO B "H" : IN2
Q121 Q104
OUT
Q202,203
VIDEO A VIDEO B
75 Ω INPUT INPUT SYNC
DRIVER DRIVER SEPARATOR
IC601
AUDIO OUTPUT CONTROLLER
Q602
JK601
MUTE 3
AUDIO
AUDIO
VR 4
CONTROL
INPUT/OUTPUT
CONST 5
MUTE DRIVER
CONNECTORS FEEDBACK 6
JK601
A OUT
2 A IN DC VOLUME AUDIO 8
IN
CONTROL OUTPUT AMP.
AUDIO
OUT
SP601 CN601
1
IC301
VOLTAGE DETECTOR
SPEAKER +9V VDD
FOR SYSTEM RESET
(8 Ω, 0.6 W)
1
IN
OUT
+ 2
–
V REF
DEGAUSSING
COIL
GND
L1 CN902
3
1
POWER
AC CONNECTOR SWITCH
CN901 L901 SW901
F901 D901
L
1
~
4A
LINE
E
– +
FILTER
~
N
2
AC IN
POWER
+120V
POWER
TRANSFORMER
+12V
Q901-905 T901
4 9
2 11
POWER +9V
IC901
SWITCHING
L E N
REGULATOR 7 13 1 +9V 2
REG.
6 12
E1
POWER D910
POWER INDICATOR
CABLE
(POWER)
Q906,907 +5V
NTSC : 120V 60Hz
Q909
POWER
PAL : 220 - 240V 50Hz
+5V
CONTROL
REG.
AMP.
Q908
POWER
CONTROL
DRIVER
Q910,911
PROTECTION
CONTROL
DRIVER
NOTE : marked connection terminals are not activite (used).
IC102 (PAL ONLY)
BASEBAND DELAY LINE FOR 1H DELAY
16 R-Y IN SIGNAL
PRE-AMP.
CLAMPING
LINE SAMPLE-
LP
MEMORY AND-HOLD
ADDITION
STAGE
14 B-Y IN SIGNAL
PRE-AMP.
CLAMPING
LINE SAMPLE-
LP
MEMORY AND-HOLD
FREQUENCY
5 SAND SANDCASTLE DIVIDER 3MHz SHIFTING CLOCK
PHASE
DETECTOR BY 192
DETECTOR
6MHz DIVIDER
LP
CCO BY 2
Q118
OSD OUTPUT
Q105,106
HORIZONTAL
IC302
8-BIT MICROCOMPUTER WITH BUS
R,G,B
Y/BL
DISPLAY CHARACTER JITTER
MEMORY ROM ELIMINATION
28 OSC1
#HD
29 OSC2 ON SCREEN DISPLAY CIRCUIT
#VD
P6 P7
STACK POINTER
PSW DATA
MEMORY
ALU FLUG RBS
(RAM)
GENERAL
REGISTER
BANK
33 #RESET
SYSTEM
INTERRUPTION CONTROL CIRCUIT
CONTROL
30 TEST
CIRCUIT
STANDBY
CONTROL
CIRCUIT
8-BIT
TIME 16-BIT
TIMER
X301 TIMING BASE
TIMER
COUNTER
GENERATOR TIMER
8 MHz
TC1 TC2 TC3 TC4
31 X IN
FOR WATCH
CLOCK
HIGH DOG
32 X OUT GENERATOR
FREQ. TIMER
D/A REM-CON
8-BIT A/D
CONVERSION
P2 P4 P5 P6 JUDGEMENT P3
CONVERTER
(PWM)OUTPUT CIRCUIT
VDD
R322 R323
(NTSC (NTSC ONLY)
ONLY)
R320 R321
(PAL (PAL ONLY)
ONLY)
SW101
KEYSW1 KEYSW2 KEYSW3 KEYSW4 MENUSW
A
(UP) (DOWN) (–) (+)
B
INPUT
SW301 SW302 SW304 SW303 SW305
INPUT SIGNAL
–AUDIO+ MENU
SELECT SWITCH
SW301,302 SW304,303 SW305
CURSOR INCREMENT/ MENU
BUTTONS DECREMENT BUTTONS
BUTTONS

BLOCK DIAGRAM

R-Y OUT 11
OUTPUT
BUFFER
B-Y OUT 12
(NTSC ONLY)
IC103
Q107 SIGNAL PROCESSOR WITH BUS INTERFACE
R-Y
AMP.
Q108
B-Y
∗
AMP.
BRIGHTNESS
∗
7-BIT
–(R-Y) IN
64
SATUR- CHROMA
–(B-Y) IN G-Y
ATION CONTRAST
63
BUFFER
1 R-Y CLAMP
2 G-Y CLAMP
3 B-Y CLAMP
11 EXT RIN
DRIVER
12 EXT GIN
13 EXT BIN
∗
DRIVE 8-BIT
10 YS IN ∗
YS CUTOFF 9-BIT
9 SPOT KILLER
PULSE
+9V
X102
6 CHROMA APC
∗
1-BIT
NTSC : 3.58MHz 8 VCO(3.58MHz)
CHROMA
PAL : 4.43MHz
7 VCO(4.43MHz)
VCO GENERATE
∗
1-BIT R-Y
–(R-Y) OUT DEMOD. +/–
61
PAL/
NTSC
/SECAM
–(B-Y) OUT
60
SW
B-Y
DEMOD.
PROGRAM 59 SECAM INTERFACE
KILLER
CORRECTION 5 KILLER OUT
IDENT
CIRCUIT
4 KILLER FILTER
HV
62 SANDCASTLE PULSE OUT
BLK.
SCP
PROGRAM
CN301
COUNTER
BGB
FA 4
21 SDA
2
SDA 3 I C BUS DAC OUT
22 SCL
INTERFACE
SCL 1 SW OUT
PROGRAM
MEMORY
(ROM)
INSTRUCTION
REGISTER
IC303
INSTRUCTION
128x8-BIT EEPROM WITH BUS
DECODER
1024-BIT EEPROM ARRAY
7-BIT 8-BIT 24 VIF1 IN
25 VIF2 IN
ADDRESS DATA
DECODER REGISTER
7-BIT
SERIAL BUS
INTERFACE
RF AGC OUT
27
2
SIO/I CBUS
SLAVE WORD
ADDRESS REGISTER
AFT OUT
30
START STOP
ACK
HIGH 33 EXT AUDIO IN
SCL 6
VOLTAGE
SIF IN/
SDA 5
GENERATOR
34 DAC OUT
CONTROL
CIRCUIT
37 SIF APC
POWER
VOLTAGE
DETECT
Q303
IC304
AUDIO
VOLTAGE DETECTOR
MUTE
+12V FOR MUTE RESET
DRIVER
1
IN
Q302 Q304
OUT MUTE
+ 2
CONTROL
–
DRIVER DRIVER
V
REF
GND
– 9 –
J101
(PAL ONLY)
(NTSC ONLY) Q112
Q209-212,L204
EXT
VIDEO
BUFFER
COMB FILTER/
1H DELAY
VR201 L205
COMB-1 COMB-2
R OUT 15 R
G OUT 16 G
B OUT 17 B
8-BIT
EXT VIDEO IN 31
R
R-Y DRIVE VSW
CUTOFF
CLAMP 7dB
VIDEO OUT 36
G
G-Y CUTOFF
∗
1-BIT
CLAMP (8-BIT)
INT VIDEO IN 38
B
+9V
DRIVE
B-Y
CUTOFF
CLAMP R241
(PAL ONLY)
BLACK LEVEL 42
R157
Y
(NTSC
CLAMP
ONLY)
ACL 20
∗
BLACK 1-BIT CV Y IN 43
EXPANSION CLAMP
Y
LPF SHARPNESS TRAP
CW CONTRAST
J102
∗ ∗
∗
7-BIT 6-BIT
7-BIT
(PAL ONLY)
TINT CHROMA
IN
48
ACC
CHROMA SW
DET.
APC NTSC
BPF
AMP.
∗
ACC
1-BIT
AMP.
50/60Hz DET OUT
57 Q206
1H
FF HOR SYNC IN 46
VERTICAL HORIZONTAL
SEPARATOR
∗ VER SYNC IN 45 + -
1-BIT SYNC SEPA SYNC SEPA.
SYSTEM VER SYNC CLAMP 44
SW
50/60Hz HORIZONTAL HOR LOCK DET 18
∗
2-BIT DETECT LOCK DET.
(50/60Hz)
X101
15.625 kHz
AFC1 53
VERTICAL
COUNT AFC1 X101
HOR VCO 54
HORIZONTAL HVCO
DOWN
COUNT
H VCC2 51
+9V
DOWN
AFC2 REGU.
∗ AFC2 52
4-BIT
H FBP IN 50
BLK.
HOR PULSE
OUT 56
VERTICAL SHUT
X-RAY PROTECT IN 55
DOWN
OUT
VER PULSE OUT 58
∗
7-BIT
VIF VOC 41
PHASE
IF VIF APC2 VCO
SHIFT
AMP DET.
VIF APC1 40
APC1
∗
∗
7-BIT
9-BIT
RF IF LEVEL
AFT
AGC AGC ADJ.
∗
4-BIT VIF DET OUT 39
IF AGC 35
ASW AUDIO
OUT
SIF DE- PRE- 28
LIMITER VCO
EMPHASIS AMP.
DET.
∗ ∗
1-BIT 1-BIT
DE-EMPHASIS 29
DC DECOUPLING 32
Q119,120
VERTICAL
DRIVER
Q117
AFC
DRIVER
Q208
INT VIDEO
BUFFER
VIDEO
MUTE
GND
TP801
(R)
Q801
R
RK
OUTPUT 7
BUFFER TP802
V801
GK
(G)
9 CATHODE
Q802
RAY TUBE
BK
G
3
OUTPUT
TP803
BUFFER
(B)
Q803
B
OUTPUT
BUFFER
5 4 6 8
CN803
CRT SOCKET
+120V
CRT BOARD
Q116
VIDEO
OUTPUT
CONTROL
FLYBACK TRANSFORMER
T502
HV
SF501
(ANODE)
4
0.63A
6
Q115
5
Y
1
INPUT
AMP.
[FOCUS]
FOCUS
2
CONTROL
3
+120V SCREEN
SCREEN
9 CONTROL
8 10
Q503,504
SYNC PROTECTION
SWITCHING
TRANSFORMER
L401
Q501 T501 Q502
CN401
HORIZONTAL HORIZONTAL HORIZONTAL
DEFLECTION DEFLECTION 1 H+
DRIVER OUTPUT
2 H–
L501 L502
H.LIN H.SIZE VERTICAL
3 V+
IC401
VERTICAL
4 V–
DEFLECTION
DRIVER
10 12 DEFLECTION
PHASE VERT-OUT COIL
-ADJ PUMP
UP-OUT
9
PUMP UP
VERTICAL
OUTPUT
THERMAL
PROTECTION
AC/DC FB-IN
VERTICAL 7
DRIVE
VR403
V.SIZE 4 VR401 V.CENTER
RAMP 6
RAMP V.SIZE
GENERATOR
VERTICAL SIZE
ONE SHOT +9V
CONTROL
MULTI.
SWITCH
50Hz/ J401
(NTSC ONLY)
VERTICAL 60Hz
TRIG INPUT -SW 5
TIME CONST 3
J402
(PAL ONLY)
V.TRIG-IN
2