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Block Diagrams, Testpoint Overviews, and Waveforms
6. Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram
A7
A5
FRONT I/O
AUDIO PROCESSING (BTSC STEREO DECODER)
MONO
STEREO
SY_CVBS_IN
V
V
L1_IN
L1_IN
L
L
A8
R1_IN
R1_IN
R
A1
A3
A4
TUNER IF
IF, VIDEO PROCESSING
VT_SUPPLY
VT_SUPPLY_A
A2
6001
BZX79-C33
+5V
1000
7200-A
UV1336
6, 7
9
TDA93XX
1001
VT
T1
VIF_1
23
11
VIDEO
2
TV TUNER
IF
IF
VIF_2
24
AGC
ERR
10
27
AGC
SOUND
5
4
1
FM-DEMOD.
3003
3004
DE-EMPH.
TUNER_AGC
A4
SDA
A4
SCL
1003
A5
L1_IN
1
SDA
A7
ComPair
2
SCL
CONN.
3
A1
POWER SUPPLY
1512
3
Degaussing
3503
Coil
2
t
90VAC-130VAC
5502
low range
1511
1500
6500
6501
P1
5520
T4E
1
6502
6503
2504
2
3527
7520
7521
TEA1506
14
3506
D
3523
DRAIN
11
G
3
DRIVER
P4
S
P5
3525
P6
2
9
5
Vcc
SENSE
3526
2521
6
6520
7523
3522
6
7
CTRL
DEMAG
3528
3581
CONTROL
IC
6522
4
3
HOT GROUND
COLD GROUND
L03.2L AA
A6
AUDIO AMPLIFIER
7861
TDA9853H
A5
Main_OutL
Main_OutL
8
1
INPUT
SELECT
Main_OutR
Main_OutR
18
26
A4
A4
A3
3865
SDA
38
BTSC STEREO
4
+
3866
SCL
18
DECODER
A2
ERR
4
AM_FM_MONO
+8VD
AUDIO CARRIER
FILTER
5201
VIDEO
VIDEO
38
PLL
7201
1201
AMPLIFIER
DEMOD.
4.5MHz
3205
V1
SOUND
44
AMPL.
+8V
AUDIO
N.C.
+ AVL
SWITCH
35
SY_CVBS_IN
7202
(MONO)
3203
A4
SYNC.
RESERVED
7580
1515
4
ENERGIZING
-12V
CIRCUIT
1
(optional)
6562
P2
5562
5563
11
6561
MAIN SUPPLY
10
P3
6560
5560
8
Vaudio
3549
3543
7
7540, 6540
EHT0
36
A2
REFERENCE
CIRCUIT
1
3544
EHT
+3V3A
A2
7515
7451
TCET1103
7541
2
STANDBY
Std_Con
A4
CIRCUIT
6.
EN 11
7901 AN7522N (STEREO)
7902 AN7523N (MONO)
1
Vaudio
3901
5
+5V
A6
A8
1900
2904
6
2
L+
4
A9
A7
L
2906
4
L-
5
8
A10
VOLUME
9
10
R-
1
A11
R
1
12
R+
2
6909
3911
FILAMENT
A7
HEADPHONE
L+
L+
L-
L-
R-
R-
R+
R+
SPEAKER
2 X 5W
16 Ohm
2 X 3W
8 Ohm
2 X 1W
8 Ohm
7200-C
TDA93XX
OSD
40
RGB
R
RGB
51
I/O
MATRIX
CONTROL
SWITCHING
G
52
RGB
OSD/TEXT/CC
B
INSERT
INSERT
Y
53
Y-DELAY
VIDEO
43
BLACK
BLUE
FILTERS
49
STRETCH
STRETCH
R-Y
U
42
BASE
PAL/NTSC
VIDEO
WHITE
WHITE-P.
B-Y
BAND
V
DECODER
IDENT
DELAY
STRETCH
ADJ
46
47
48 45
50
R_SC1_IN_V_IN
G_SC1_IN_Y_IN
N.C.
B_SC1_IN_U_IN
FBL_SC1_IN
A2
DEFLECTION
Hflybk
7200-D
TDA93XX
34
3424
-12V
VIDEO
5421
INTERNAL
7423
7422
H-DRIVE
H-DRIVE
H
33
2nd LOOP
H/V SYNC
H-SHIFT
SEPERATOR
V2
2428
V
H-OSC
3425
+PLL
Vaudio
3423
6423
A2
FILAMENT
FRAME
D4
V-DRIVE -
22
V-DRVE
+
V-DRIVE +
21
3463
GEOMETRY
7461
7462
EW
D5
20
3465
+
GEOMETRY
2490
A7
A4
FRONT CONTROL
CONTROL
+3.3V
5601
5603
5602
7200-B
TDA93XX
54
61
56
6692
TSOP1836
F1
11
1
IR
IR
62
IIC
BUS
3
KEYBOARD
I/O
LOCAL
8
PORTS
2
KEYBOARD
CHANNEL + / -
VST
VOLUME + / -
PWM-
POWER (USA only)
DAC
ROM
RAM
1
1/10
PAGES
MEMORY
4
TELE
TEXT/CC
+
OSD
CVBS SYNC
57
CPU
58
B1
CRT
+170V0
3313
7308
7313
7314
V12
R
3301
7310
7315
7316
1622
1300
V9
V13
3619
G
3305
RED
1
1
V10
3620
GREEN
2
2
7312
3309
7317
V11
3621
7318
BLUE
3
3
V14
B
4
4
BEAM-LIMIT
A2
3624
BLK_IN
5
5
6
3318
FRAME_OUT
7
6318
A2
+170V0
FILAMENT
8
LINE
5441
EHT
1
D3
7
7421
BUT11APX
2
D2
FOCUS
VG2
10
D1
3447
3410
0221
1
3451
6451
MAINSUPPLY
3403
4
A1
2455
6452
HOR.
DEFL.
COIL
2406
3448
6447
9
5401
3402
3459
6446
3445
8
7464
3443
6448
5
D7
3444
6444
6461
7466
3446
2460
4
3470
7465
6463
6462
7463
2465
1402
3475
1
VERT.
3464
2
DEFL.
COIL
-12V
3474
7641
M24C04
+3.3V
EEPROM
8
WP
(NVM)
7
6
ERR
+3V3
5
9
3643
3642
3602
3601
3605
SDA
SDA
A3
3604
V7
SCL
A5
SCL
V8
Std_Con
A1
VOLUME
A6
SDAM
9625
1621
12MHz
V15
0165
AQUADAG
7
R
V16
R
9
G
G
CRT
B
3
V17
(9P)
B
4
5
6 8
3319
25kV
VG2
FOCUS
EHT
EHT
FOCUS
VG2
A1
EHT
EHT 0
A4
BEAM-
A4
1400
LIMIT
1
+160VD
2
D8
+160VD
3
A3
VT SUPPLY
D9
FILAMENT
-12V
D10
A6
FILAMENT
A2
FRAME OUT
A4
E_14560_017.eps
240304
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