Specifications

Block Diagrams, Testpoint Overviews, and Waveforms
25L03.2U AA 6.
6. Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram
POWER SUPPLY
1512
43
2
1
2
7
10
11
3
6
2
5
6
1
E_14560_017.eps
240304
P1
P4
P6
A5
A4
1511
90VAC-130VAC
low range
3543
5562
3544
A1
Degaussing
Coil
1515
5520
7580
7520
TEA1506
7200-D
TDA93XX
DRAIN
DRIVER
SENSE
DEMAG
CONTROL
IC
CTRL
Vcc
ENERGIZING
CIRCUIT
(optional)
6501
6503
6500
6502
5502
8
1
2
4
3
1500
T4E
2504
6562
6561
MAIN SUPPLY
-12V
5563
5560
6560
P3
P2
Vaudio
3549
A4
A2
Std_Con
HOT GROUND COLD GROUND
7540, 6540
REFERENCE
CIRCUIT
7541
+3V3A
STANDBY
CIRCUIT
7515
TCET1103
3527
3525
3523
3526
7521
14
11
9
3522
7
D
S
G
P5
6520
3528
7523
FRONT I/O
A7
V
L
AUDIO PROCESSING (BTSC STEREO DECODER)
A5
MONO
V
L
R
STEREO
A8
A6
A7
AUDIO AMPLIFIER
A6
A4
7901 AN7522N (STEREO)
7902 AN7523N (MONO)
62
5
1
L+
L
8
9
VOLUME
1
1900
A9
4L-
A10
10 R-
A11
12 R+
R
4
5
1
2
FILAMENT
A8
FRAME
LINE
L1_IN
7861
TDA9853H
R1_IN
INPUT
SELECT
SY_CVBS_IN
SY_CVBS_IN
L1_IN
R1_IN
1
18
Main_OutR
Main_OutL
Main_OutR
Main_OutL
8
26
4
38
3865
3866
BTSC STEREO
+
DECODER
ERR
4
18
7451
EHT
MAINSUPPLY
DEFLECTION
A2
SYNC.
A4
A1
D7
D4
D1
D8
D9
A2
A1
D2
V2
D5
-12V
7421
BUT11APX
5421
D3
3424
0221
1
4
HOR.
DEFL.
COIL
1402
1
2
VERT.
DEFL.
COIL
5441
1
V
H
7
2
36
FOCUS VG2
EHT
10
EHT
A4
EHT 0
A4
A4
A3
A6
A2
BEAM-
LIMIT
3447
9
33
22
34
21
20
6446
8
5
4
6463
3445
3446
3475
VT SUPPLY
6447
+160VD
+160VD
-12V
FILAMENT
FILAMENT
3448
3459
6452
6451
D10
6444
6448
3443
3444
FRAME OUT
6422 2423
2406
5401 3402
3403
7423
7422
3425
Vaudio
FILAMENT
A2
EHT0
H-DRIVE
Hflybk
H-DRIVE
2nd LOOP
H-SHIFT
V-DRVE
+
GEOMETRY
VIDEO
INTERNAL
EW
+
GEOMETRY
H/V SYNC
SEPERATOR
H-OSC
+PLL
3463
3465
2490
3464
7463
7461
7465
7462
-12V
V-DRIVE -
V-DRIVE +
3470
7466
7464
3474
3451
2455
HEADPHONE
A7
L+
L-
R-
R+
L+
L-
R-
R+
V7
V8
5602
36423643
3605
3604
56035601
A3
A5
FRONT CONTROL
A7
CONTROL
A4
+3.3V
WP
36013602
+3V3
+3.3V
F1
57
1621
12MHz
58
1
KEYBOARD
LOCAL
KEYBOARD
CHANNEL + / -
VOLUME + / -
7200-B
TDA93XX
VST
PWM-
DAC
ROM
RAM
CPU
IIC
BUS
I/O
PORTS
11 7
3
2
8
6
5
54 61 56
IR
62
8
7641
M24C04
EEPROM
(NVM)
SDA
SCL
A1
1
Std_Con
A6
4
VOLUME
SDA
SCL
9625
SDAM
1/10
PAGES
MEMORY
TELE
TEXT/CC
+
OSD
CVBS
SYNC
ERR
9
6692
TSOP1836
IR
SPEAKER
2 X 5W 16 Ohm
2 X 3W 8 Ohm
2 X 1W 8 Ohm
CRT
B1
1300
1
2
3
5
6
7
8
3305
3309
3301
V12
V13
V14
V16
V15
V17
4
R
G
B
R
G
B
CRT
(9P)
25kV
FOCUS
EHT
VG2 FOCUS EHT
VG2
7
9
3
45 68
7308
7313
7314
R
7312
7317
7318
B
7310
7315
7316
G
0165
AQUADAG
6318
3318
+170V0
3313
+170V0
A5
A7
5201
IF, VIDEO PROCESSING
A4
VIF_1
VIF_2
TUNER_AGC
(MONO)
+8V
+8VD
23
38
7202
3203
3205
7201
44
24
27
L1_IN
35
AUDIO CARRIER
FILTER
7200-A
TDA93XX
VIDEO
IF
AGC
VIDEO
PLL
DEMOD.
VIDEO
AMPLIFIER
SOUND
FM-DEMOD.
DE-EMPH.
AUDIO
SWITCH
SOUND
AMPL.
+ AVL
V9
AM_FM_MONO
40
1201
4.5MHz
43
N.C.
N.C.
42
7200-C
TDA93XX
I/O
SWITCHING
Y-DELAY
R-Y
B-Y
U
V
R
G
B
RED
GREEN
BLUE
51
52
53
49
Y
VIDEO
FILTERS
RGB
MATRIX
RGB
INSERT
BLACK
STRETCH
WHITE
STRETCH
RGB
CONTROL
OSD/TEXT/CC
INSERT
BLUE
STRETCH
WHITE-P.
ADJ
VIDEO
IDENT
1622
PAL/NTSC
DECODER
BASE
BAND
DELAY
3620
3619
3621
R_SC1_IN_V_IN
G_SC1_IN_Y_IN
B_SC1_IN_U_IN
FBL_SC1_IN
4746 48
45
50
V10
V11
1
2
3
1400
1
2
3
4
5
OSD
A2
BEAM-LIMIT
A2
FRAME_OUT
BLK_IN
FILAMENT
T1
V1
1003
SDA
SCL
ComPair
CONN.
TV TUNER
SDA
SCL
6001
BZX79-C33
TUNER IF
A3
A4
A4
A2
1000
UV1336
6, 7 9
1
2
1
+5V
VT_SUPPLY_A
VT_SUPPLY
VT
AGC
5
4
IF
2
3
11
1001
ERR
10
POWER (USA only)
SDA
SCL
A3
A1
A2
+5V
3901
Vaudio
2904
2906
3911
6909
3003
3004
3624
3319
3423
6423
2428
3410
2460
6462
6461
2465
3503
3506
t
3581
6522
2521
RESERVED