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5-1. BLOCK DIAGRAMS (1)
CN7444
QP (-)
1 2 3 4 7 8 VM QP+ QP-
CN7442
5
QP (+) QP (-) VM
VM AMPLIFIER BUFFER Q7401 VM AMPLIFIER BUFFER Q7405 VM AMP OUTPUT Q7407 VM AMPLIFIER BUFFER Q7400
QP (-) QP (+) +9V
VM AMPLIFIER BUFFER Q7403 VM AMP OUTPUT Q7406
TO A BOARD CN7000
4 1
QP (+) VM VM
NECK ASSY
VM (
VELOCITY MODULATION
)
CN2501
R L 4 1
TO SPEAKERS CN2502
TU100
SCL SDA FM/AM QSS VIDEO SCL SDA RIGHT OUT RIGHT IN LEFT OUT LEFT IN BLUE IN 1 GREEN IN 1 RED IN 1 VIDEO OUT 1 VIDEO IN 1 H CENTRE 3 72 XTAL OUT
AUDIO PROCESSOR IC2000
60 MONO IN (AM) 67 IF INI 2 SCL 3 SDA 36 SC1 OUT R 57 SC1 IN R 37 SC1 OUT L 56 SC1 IN L 71 XTAL IN SPEAKER OUT R 27 SPEAKER OUT L 28 SUBWOOFER OUT 30 RIGHT LEFT WOOFER 5 IN R 1 IN L 6 IN W
AUDIO AMPLIFIER IC2500
OUT R 12 OUT L 14
R IN L IN R OUT L OUT
3 5 2 6
TO H2 BOARD CN2908
CN2500
OUT W 3 WOOFER 1
CN1000
9 MUTE W 10 MUTE
TO SUBWOOFER CN5100
OP. AMP IC5104
1 4 ROT ROT+ ROTROT+ 1 3
OP. AMP IC5301 DAC IC5103
3 7 DF PHOCUS PHASE M PIN CONT 6 5 3
COMPARATOR IC5302
6 7 DF DRIVE 2
TO ROTATION COIL CN5002
M PIN CONT
4
TO D BOARD CN8810
CN1001 (1/2)
1 2 3 6 7 11 15 19 20 RIGHT OUT RIGHT IN LEFT OUT LEFT IN BLUE IN 2 R TXT GREEN IN 2 Y IN 100 RED IN 2 U IN 100 VIDEO OUT 2 V IN 100 VIDEO IN 2 H SYNC 33 SC2 OUT R 54 SC2 IN R 34 SC2 OUT L 53 SC2 IN L FS 100 B TXT G TXT
BACKEND: DEFLECTION RGB PROCESSOR IC7002
33 YSYM 2 34 B2 IN 35 G2 IN 36 R2 IN 52 Y1 IN 53 CB1 IN 54 CR1 IN 59 HS IN 60 VS IN 56 Y2 IN 57 CB2 IN 58 CR2 IN EXTRA PARA 63 DF PARA 64 EW OUT 1 MP PARA DF PARA E/W H DRIVE AFC PULSE X RAY B OUT 26 G OUT 28 R OUT 30
CN7001
RR+ GG+ BB+ 1 2 3 4 5 6
TO C BOARD CN7301
CN5801
MP PARA DF PARA E/W H DRIVE AFC PULSE X RAY 2 1 3 5 6 8
CN1001 (2/2)
1 2 3 6 19 20 RIGHT OUT RIGHT IN LEFT OUT LEFT IN VIDEO OUT 2 50 SC3 IN L 51 SC3 IN R
V SYNC PIP Y PIP CB PIP CR
HD OUT 17 HP IN 18 X RAY IN 20
TO D BOARD CN8620
V OUT IC5400
VDP OUT 5 6 1 7
V/Y IN 3 VDN OUT
CN2000
1 4 KEY Y/CVBS FRONT LEFT RIGHT
TO H2 BOARD CN2906
HEADPHONE AMPLIFIER IC2001
5 3 1 7 48 FR IN R 47 FR IN L
VPROT 16
6 9
PART OF V PROT Q5400 Q5401
DYNAMIC CONVERGENCE IC5200
3 2 5 6 3 2
OP. AMP IC5201
CY+ 6 CY1 3
CN5200
CN0103
2 LED
CN7000
VM OUT 45 VM 1
TO F2 BOARD CN0981
1 SIRCS
TO VM BOARD CN7442
TO A BOARD SHEET 2 J2000
R OUT
L OUT
A 1/2 (
VIDEO AND AUDIO PROCESSORS, AUDIO OUTPUT, VERTICAL DEFLECTION
)
- 23 -
5-1. BLOCK DIAGRAMS (2)
FV
TO A BOARD SHEET1 PART OF OVERVOLTAGE PROTECTION Q5816 CN6200
1 2
TO D BOARD FV (T6804)
CN7301
1 2 3 RR+ GG+ BB+ IK
IC7300 VIDEO OUT (RED) G4
1 3 5
J7375
VB R VI IK VO
8
10
TO G BOARD CN6008 CN0101
G
9
TO A BOARD CN7001
4 5 6 9
B
Y IN 100
100Hz BUFFER Y SCAN RATE BACKEND Q3300
SCAN RATE CONVERTER, COLOUR DECODER AND I/O VIDEO SWTICH IC3200
2 AY OUT 100 AU OUT 100 79 8 NC 17 H OUT 100 23 V OUT 100 37 FBL 1 38 FBL 2 39 R IN 1 40 G IN 1 41 B IN 1 46 R IN 2 47 G IN 2 48 B IN 2 52 CVBS 1 53 CVBS 2 X OUT 69 CVBS OUT 1 63 CVBS OUT 2 62 CVBS OUT 3 61 CVBS 7 58 CVBS 6 57 CVBS 5 56 CVBS 4 55 CVBS 3 54 CVBS PIP C FRONT Y/CVBS FRONT C IN 3 V/Y IN 3 V IN 2 X IN 70 AY OUT 100 76
8
SCL
A3 B3 A4 B4 A5 B5 B6 A7 B7 A8 B8 A9 B10 B11 A12 B12 A13 B13 A14 A15 B15 B16 A17 B17 A19 A20 B20
BLK 100 H SYNC V SYNC BLK 1 BLK 2 RED IN 1 GREEN IN 1 BLUE IN 1 RED IN 2 GREEN IN 2 BLUE IN 2 VIDEO RF V IN 1
6dB AMPLIFIER FOR THE MONITOR OUTPUT CVBS (2ND SCART) Q3204
SDA LED SIRCS AGC MODE 3
IC7325 VIDEO OUT (GREEN)
G2
13
1 3 5
VB VI IK VO
8
H1
3
PICTURE TUBE
6dB AMPLIFIER FOR THE MONITOR OUTPUT CVBS (2ND SCART) Q3201
OVP V OUT 2
OVP GROUP DELAY OCP
HV
STANBY SW Q7355
VIDEO RF
COINCIDENCE DETECTOR Q1005
COINCIDENCE MAIN RY DGC RY
STANBY SW Q7352
IC7350 VIDEO OUT (BLUE) CN7300
1
TO D BOARD HV (T8800)
100Hz BUFFER U SCAN RATE BACKEND Q3302
VB VI IK VO
8
V IN 100 B TEXT G TEXT RESET AUDIO
STANBY SW Q7353
H1
5
3 5
TO D BOARD CN6500
TO M BOARD CN0001
+12V
VOLTAGE DET Q7354, 7350
100Hz BUFFER U SCAN RATE BACKEND Q3301
R TEXT U IN 100 AUDIO MUTE FS 100 MODE 1 AV LINK MODE 2 LINE MUTE H SYNC V SYNC CVBS TXT H SYNC V SYNC TXT VIDEO KEY 12C DISABLE
RV7375 G2
C(
CRT DRIVE
)
+3.3V
12 C ADAPTOR 5V - 3.3V Q3500
12 C ADAPTOR 5V - 3.3V Q3501
SCL SDA
J2900
CN0102 SERVICE CONNECTOR
2 3 4 5
CN2908
WOOFER MUTE R OUT 1 2 3 5 6
A 2/2 (
VIDEO AND AUDIO PROCESSORS, AUDIO OUTPUT, VERTICAL DEFLECTION
)
CS AGC
TO A BOARD CN2502
R IN L IN L OUT
J2900 HEADPHONES
POWER CN6981
1 2 1
CN2906
CN6982
AUDIO L 6 AUDIO R 9
5
CN2900
L R VIDEO
D0993 IC0981
OUT +5V LED SIRCS 2 1
CN0981 TO A BOARD CN003
TO A BOARD CN2000
Y/CVBS 4 C 2
1 3 4 2
Y/C
F2 (
LED AND IR RECEIVER, POWER SWITCH
)
H2(
AUDIO IN, Y/C IN, HEADPHONE IN
)
- 24 -
5-1. BLOCK DIAGRAMS (3)
DF DRIVE Q8851
COMPARATOR IC8103
CN8810
1 2
V STAT DF DRIVE H CENTRE
1
8
2
7
3 4
3
CN8620
1 2 3 4 5 6 7 8
4
DF PARA HMP PARA E/W H LIN H DRIVE AFC PULSE ABL
Q8201, 8202,8118
TO A BOARD CN5801
Q8136,8137 Q8100,8102
X RAY PROTECT
Q8807 COMPARATOR IC8100 1 8
2
7
3
6
4
5
COMPARATOR IC8101 1 8 1
2
7
3
6
3
4
5
4
Q8123
Q8120 Q8203
T6003 CN6001
1
AC IN AC IN
4
3
RELAY RY6001
TO F4 BOARD CN6992 CN6002
5
1
2
1
CHECK CHECK
FOR CHECK
MAIN RECT D6001 6
2
CN6003
1 2 3
DGC DGC DGC
RELAY RY6002
CN6004
1 3
PFC PFC
T6101 CN6008
1
1 MAIN RY DGC RY
7
TO A BOARD CN6200
2
2
8
RECT D6102
RELAY SWITCH Q6103 RELAY SWITCH Q6101
3
9
4
Q6104
Q6105
+ -
+ -
+ -
M PIN CONT
+ 6 5
TO A BOARD CN5002
T8852
3 1
CN8611
4 2 V+ V6 5 4 3 2 1
DY ASSY
V- DY+ V- DYV DY H DY H- DYH- DY+
HH+ H+
CN8614
5
TO C BOARD CN7300 CN8612
D8819
VV+ +8 1 3 1
TO A BOARD CN8001
T8801
3
PIN OUT Q8803
T8800
HV
+ -
+ -
+ -
2 +8 1
4
1
T8802
3 +200V
H OUT Q8804
D8805
4
2
HD1
2
4
M PIN CONTROL Q8805 H LIN Q8806
5 6 F
OP. AMP IC8102 8
D8807 -15V
2 7 8 6 Q8122 7 13
+ -
SC
D8808 +15V
9 12 11
5
Q8112
D(
DEFLECTION
)
T6002
10 11 12 13 14 15 1 V SENSE 2 F/B 3 CT 4 RT 6 TIMER 7 SS 8 VC 1 9 OCP VG (L) 12 VC 2 10 VS 15 VB 14 D6004 MOSFET TRANSISTOR USED BY SWITCHING CIRCUIT Q6007 9 1 2 3 RECT D6016 VD 18 VG 16 MOSFET TRANSISTOR USED BY SWITCHING CIRCUIT Q6006 7 16 17 18
+200V
RECT D6010
+135V
IC6001 MAIN BRIDGE RECTIFIER
8
+11V +6V
CN6006
AU (+) AU (+) 5 6
TO A BOARD CN6202
PH6001
4 3 1 2 1
IC6003
2
G(
- 25 -
POWER SUPPLY
)
5-1. BLOCK DIAGRAMS (4)
5-2. CIRCUIT BOARD LOCATION
Reference Information
RESISTOR RN RC : METAL FILM : SOLID : NON FLAMMABLE CARBON : NON FLAMMABLE FUSIBLE : NON FLAMMABLE METAL OXIDE : NON FLAMMABLE CEMENT : NON FLAMMABLE WIREWOUND : ADJUSTMENT RESISTOR COIL CAPACITOR LF-8L TA PS PP PT MPS MPP : MICRO INDUCTOR : TANTALUM : STYROL : POLYPROPYLENE : MYLAR : METALIZED POLYESTER : METALIZED POLYPROPYLENE : BIPOLAR : HIGH TEMPERATURE : HIGH RIPPLE
COMPARATOR (AV-LINK CIRCUIT) IC0004 1 8
CC Board
FPRD FUSE
C
2
7
N
VM VM Board
3
4
NVM MEMORY IC0001
5 7 6
RESET CIRCUIT IC0003
SWITCH NVM WC* CONTROL DURING RESET Q0013
3
CN001
A3 B3 A4 B4 A5 SCL SDA LED SIRCS AGC
MICRO CONTROLLER IC0002
28 LED 76 SIRCS 6 AGC 22 AGC 49 40 39 38 27 26 23 15 67 66 65 64 A(0) A(1) A(2) A(3) A(4) A(5) A(6) A(7) A(8) A(9) A(10) A(11) A(12) A(13) A(14) A(15) A(16) A(17) A(0) A(1) A(2) A(3) A(4) A(5) A(6) A(7) A(8) A(9) A(10) A(11) A(12) A(13) A(14) A(15) A(16) A(17) 20 19 18 17 16 15 14 13 3 2 31 1 12 4 11 7 10 9 32 5 D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7) D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7) 21 22 23 25 26 27 28 29
B5
MODE 3
93 MODE 3 (1) 94 MODE 3 (2)
B6 A7 B7 A8 B8
OVP GROUP DELAY OCP COINCIDENCE MAIN RY
29 OVP/OCP 80 GROUP DELAY 24 OCP FLAG 59 COINDIDENCE
MAIN RELAY DRIVER Q0002
17 MAIN RY
A9
DGC RY
DEGAUSING COIL RELAY DRIVER Q0003
16 DGC RY
37 36
B10 B11
B TEXT G TEXT RESET AUDIO R TEXT AUDIO MUTE
46 B TEXT 47 G TEXT 25 RESET AUDIO 48 R TEXT 13 AUDIO MUTE 43 COR* RD*
8 33 51 50 9
TO A BOARD CN0101
A12 B12 A13
WR* 10 85
B13
FS 100 52 VDS
86 87 88
A14 A15 B15 B16 A17 B17 A19 B19 A20 B20
MODE 1 AV LINK MODE 2 LINE MUTE H SYNC V SYNC TXT VIDEO RESET 100 KEY 12C DISABLE
4 MODE 1
2 MODE 2 18 MUTE LINE 53 H SYNC 55 V SYNC 32 TXT VIDEO 96 RESET 100 5 KEY
89 90 91 92 NVM WL* 98 RESET 73 AV LINK OUT 78
97 12C DISABLE AV LINK IN 79
12C SWITCH (CONNECT 12C BUS 0 AND BUS 1 TOGETHER) Q0007, 0008 12C DISABLE DRIVER (CS) Q0011 12C SWITCH (CONNECT 12C BUS 0 AND BUS 1 TOGETHER) Q0009, 0010
82 SDA 0
81 SCL 0
83 SCL 1 84 SDA 1 71 70 69
+ -
+
6 5
RS RB
H
CVM Board
H2 Board A F2 Board
D Board
RW
J S1 Board M Board A2
A1
SRAM (TELETEXT PAGES STORAGE) IC0005
D1
A Board
D2 A Board A
D
G Board
5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS
Note :
· · · All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less are not indicated except for electrolytic types. Indication of resistance, which does not have one for rating electrical power, is as follows. Pitch : 5mm Electrical power rating : 1/4W · · Chip resistors are 1/10W All resistors are in ohms. k = 1000 ohms, M = 1000,000 ohms : nonflammable resistor. : fusible resistor. : internal component. : panel designation or adjustment for repair. All variable and adjustable resistors have characteristic curve B, unless otherwise noted. All voltages are in Volts. Readings are taken with a 10Mohm digital mutimeter. Readings are taken with a color bar input signal. Voltage variations may be noted due to normal production tolerences. : B + bus. : B - bus. : RF signal path. : earth - ground. : earth - chassis.
ALB ALT ALR
Note : The components identified by shading
and marked are critical for safety. Replace only with the part numbers specified in the parts list.
· · · · · · · · ·
Note : Les composants identifiés par une trame et
par une marque sont d'une importance critique pour la sécurité. Ne les remplacer que par des pièces de numéro spécifié. specified.
· · · · ·
M(
MICRO PROCESSOR
)
- 26 -
~ A Schematic [ Video & Audio Processors, Audio Output,
Vertical Deflection] page 1/2 ~
-- 27 -
~ A Board Waveforms ~
TP1
5ms/div 2ms/div
TP2
744 mVp-p (V)
20us/div
53 Vp-p (V)
10us/div
TP3
TP4 TP4
1.4 Vp-p (H)
5ms/div
688 mVp-p (H)
5ms/div
TP5
TP6
264 mVp-p (H)
272 mVp-p (H)
~ A Board Difference Table ~
Ref C1011 C1012 C1016 C1017 L1004 Q1002 Q1003 R1011 R1012 R1014 R1015 R1016 R1018 R1020 TU1000 29LS60B 120PF 56PF 10PF 68PF 18UH MSD601-RST1 DTC114EKAT146 330 330 470 100 2.2K SHORT 0 BTF-EF411 29LS60E SHORT 0 BTF-EC411 29LS60K SHORT 0 BTF-EC411
~ A Schematic [ Video & Audio Processors, Audio Output,
Vertical Deflection] page 2/2 ~
828 -- 28 - -
A
B
C
D
E
F
G
H
I
J
K
L
M
N
1
~ F2 Board Schematic Diagram [ Power Switch & Fuse ] ~
~ H2 Board Schematic Diagram [ Front AV & Headphone ] ~
2
3
4
5
6
7
8
9
10
11
~ VM Board Schematic Diagram [ Velocity Modulation ] ~
- 33 -
~ G Board Schematic Diagram [ Power Supply ] ~
- 35 -
~ D Board Schematic Diagram [ Deflection ] ~
- 36 -
A
B
C
D
E
F
G
H
I
J
K
L
M
N
1
2
3
4
5
6
7
8
9
10
11
~ C Board Schematic [ R-G-B Out ] ~
- 38 -
~ M Board Schematic Diagram [ Micro Processor ] ~
- 40 -