Block Diagram; Voltage Charts; Waveforms - Sanyo DS19500 Manual

MODEL DS19500 Chassis No. 19500-07
SCHEMATIC DIAGRAMS
NOTES ON SCHEMATIC DIAGRAMS
1. All resistance values in ohms K=1,000 M=1,000,000.
2. Unless otherwise noted on schematic, all capacitor values less than 1 are expressed in µF (Micro Farad),
and the values more than 1 are in pF.
3. Unless otherwise noted on schematic, voltage reading taken with VOM from point indicated to chassis
ground. Voltage reading taken using color-bar signal VHF channel 5, all controls at normal. Line voltage at 120
volts. Some voltages may vary with signal strength.
4. Waveforms were taken with color-bar signal and controls set for normal picture. Waveforms marked with
an may vary with signal strength.
5. The Symbol indicates a fusible resistor, which protects the circuit from possible short circuits.
SERVICE NOTES:
1. When replacing parts on circuit boards, clamp the lead wires to terminals before soldering.
2. When replacing high wattage resistors on circuit board, keep the resistor body 10 mm (3/8) from circuit board.
3. Keep wires away from high voltage and high temperature components.
PRODUCT SAFETY NOTICE
THE COMPONENTS DESIGNATED BY A STAR ( ) ON THIS SCHEMATIC DIAGRAM DESIGNATE COMPONENTS
WHOSE VALUES ARE OF SPECIAL SIGNIFICANCE TO PRODUCT SAFETY. SHOULD ANY COMPONENT
DESIGNATED BY A STAR NEED TO BE REPLACED, USE ONLY THE PART DESIGNATED IN THE PARTS LIST. DO NOT
DEVIATE FROM THE RESISTANCE, WATTAGE AND VOLTAGE RATINGS SHOWN.
X-RADIATION WARNING NOTE
THIS TV CONTAINS CRITICAL PARTS TO PROTECT AGAINST X-RADIATION. NOMINAL 2ND ANODE VOLTAGE IS
26.0KV AT ZERO BEAM CURRENT AT 120 VOLTS AC LINE, AND MUST NOT EXCEED 27.0KV UNDER ANY
OPERATING CONDITION. SEE HIGH VOLTAGE CHECK ON PAGE 8.
INTEGRATED CIRCUITS PHOTO COUPLERS TRANSISTORS
TOP VIEW
TOP VIEW
B
B B B
E C E C E C B
E C
MARK 1 1 E C
1
COUNT TERMINALS IN
ARROW DIRECTION
SIDE VIEW
C E
C E E C
B E
B B C
B
B ... BASE
C ... COLLECTOR
1
1 1 E ... EMITTER
CHIP TRANSISTORS CHIP RESISTORS
TOP VIEW TOP VIEW
C
B ... BASE
1
C ... COLLECTOR
1 3 3 2 E ... EMITTER
2 OUT
1
1
GND (3)
IN
(2)
(1) B E
CAPACITOR AND RESISTOR CODE CHART
CAPACITOR (Example)
500 C K 1500 B D ........................... ±0.5pF
T ............................ +50%
J ............................ ±5%
K ........................... ±10%
M ........................... ±20%
N ........................... ±30%
Characteristics P ...........................
+100% –
Value code Z ........................... +80%
Tolerance code C ........................... ±0.25pF
Material code C ........................... Ceramic
Voltage rating E ........................... Electrolytic
F ........................... Polyester
N ........................... Polypropylene
T ............................ Tantalum
K ........................... Ceramic
H ........................... MT-Composite
P ........................... NP. Electrolytic
M ........................... MT-Polypropylene
RESISTOR (Example)
6 Y K 4.7 D ........................... ±0.5%
F ........................... ±1%
G ........................... ±2%
J ............................ ±5%
Value code K ........................... ±10%
Tolerance code M ........................... ±20%
Material code F ............................ Fusible
Wattage rating N ........................... Metalized Carbon
S ........................... Oxide Metalized
Y ........................... Wire Wound
C ........................... Solid
D ........................... Carbon Film
W .......................... Wire Wound
— 25 —
CAUTION

BLOCK DIAGRAM

4A 125V
ANT
A101
IF
UHF/VHF TUNER
WITH PLL AGC
& BAND SW
RF AGC
1
28
BUS SCL
34
BUS SDA
32
6
IIC SCL
33
IC802
7 IIC SDA
EEPROM 31
RC IN
A1901
10
RC PRE-AMP
KEY IN
SW1901-1906
9
CONTROL KEYS
IC801
C809
X IN
CPU
19
WITH
CAPTION
C808
X OUT DECODER
20
DIODES
X 801
A K
A
K
A K
L901 PS601
A K
POSISTOR
DEGAUSING
COIL
K T601
CONVERTER
A F601 TRANS.
LF601
AC LINE
AC120V
60Hz FUSE FILTER
K A
Q601
SW.
INFRARED EMITTING
C601
D601-D604
FULL WAVE Q611
A....ANODE RECTIFIER Q612
OSC
K....CATHODE
Q613
ERR.
4A 125V AMP.
3
12 x 10 = 12K ohm

VOLTAGE CHARTS

NOTE: Voltages were measured using color-bar signal and the controls set for normal picture.
Device/Pin # Volts/Mode Device/Pin #
IC101-37
POWER ON: POWER OFF:
D612-1
30.6 10.5
IC101-38
IC101-39
POWER ON: POWER OFF:
D612-2
29.5 9.4 IC101-40
IC101-41
POWER ON: POWER OFF:
D612-3
0.7 0.4
IC101-42
IC101-43
POWER ON: POWER OFF:
D612-4
14.7 1.7 IC101-44
– 10%
IC001-1 6.7 IC101-45
IC001-2 15.4 IC101-46
IC001-3 N.C. IC101-47
IC001-4 GND IC101-48
IC001-5 N.C. IC101-49
0%
IC001-6 N.C. IC101-50
– 20%
IC001-7 1.4 IC101-51
IC001-8 GND IC101-52
IC101-1 GND IC101-53
IC101-2 GND IC101-54
IC101-3 GND IC101-55
IC101-4 GND IC101-56
IC101-5 GND IC101-57
IC101-6 5.1 IC101-58
IC101-7 2.1 IC101-59
IC101-8 2.7 IC101-60
IC101-9 3.8 IC101-61
IC101-10 3.6 IC101-62
IC101-11 4.3 IC101-63
IC101-12 1.5 IC101-64
IC101-13 1.5 IC101-65
IC101-14 1.4 IC101-66
IC101-15 0.2 IC101-67
IC101-16 8.2 IC101-68
IC101-17 2.5 IC101-69
IC101-18 2.2 IC101-70
IC101-19 2.4 IC101-71
IC101-20 GND IC101-72
IC101-21 GND IC101-73
IC101-22 GND IC101-74
IC101-23 GND IC101-75
IC101-24 GND IC101-76
IC101-25 N.C. IC101-77
IC101-26 2.1 IC101-78
IC101-27 2.6 IC101-79
IC101-28 5.3 IC101-80
IC101-29 2.7 IC501-1
IC101-30 0.4 IC501-2
IC101-31 GND IC501-3
IC101-32 N.C. IC501-4
IC101-33 1.0 IC501-5
IC101-34 1.8 IC501-6
IC101-35 N.C. IC501-7
IC101-36 5.0
— 26 —
FOR CONTINUED PROTECTION AGAINST
A RISK OF FIRE, REPLACE ONLY WITH
THE SAME TYPE 4A, 125V FUSE.
ATTENTION: POUR MAINTENIR LA PROTECTION
CONTRE LES RISQUES D' INCENDIE UTILISER UN
FUSIBLE DE RECHANGE DE MEME TYPE 4A, 125V.
SDL
5 IC3401
SCL
MTS DECODER
6
13
Q1071
BUFFER
EXT. VIDEO
INT. VIDEO
H-S
V-S
Q135 Q202
BUFFER BUFFER
IC101
SIGNAL PROCESS
MUTE SDA 9
2
BUS
38
SCL 10
INTERFACE
4.5MHz
L164
X141 78/79 75
FM SOUND
SAW X161
TRAP
DET.
FILTER
RF AGC 77
56 VIDEO
VIDEO
11
ACL DET.
EXT. VIDEO Y 52 36 V-S
VIDEO
INT. VIDEO Y 54
SW. 37 H-S
33 H-PULSE
V
49
BEAM SYNC
26
VOLTAGE
SEP.
DETECT. CAP
ABL-IN VIDEO H
30 OUT HORIZ.
DRIVER
T401
DELAY
H-DRIVE
LINE
TRANS.
Q401
BLACK 30
HORIZ.
STRETCH
DRIVE
SHARP
BPA
Y CV IN 40 HOLD DOWN HOLD DOWN
17
OSD (R) DETECT.
42 COLOR CONT
OSD (G) DEMOD BRITE
R
41
OSD (B) 12 17
40
OSD (BLK)
13
39 RGB 18 G
RESET OSD
Q831 14 OUT
19
25 SW.
RESET
AFT S-CURVE
15 B
29
RESET
POWER FAIL 8
3
POWER
27
ON/OFF
5V
IC681 35
ALWAYS
5V REG.
TJ1
+135V Q681
12V SW
12V
D624 DRIVE
D627
D625
IC601 +12V D801
Q486
POWER 9V
Q635 9V REG.
TJ5
REG. OVERLOAD
Q627
PROTECT.
D612
12V SW.
PHOTO 5V
Q490
COUPLER
5V REG. B6
STANDBY MODE
Q693,
ALWAYS +5V
Q695
CONTROL
Volts/Mode Device/Pin # Volts/Mode Device/Pin #
4.3 IC601-1 130.0
IC802-1
4.7 IC601-2 29.2 IC802-2
GND IC601-3 GND IC802-3
0 IC681-1 13.4 IC802-4
GND IC681-2 GND
IC802-5
GND IC681-3 5.0 IC802-6
GND IC801-1 4.0 IC802-7
2.3 IC801-2 3.9
IC802-8
3.6 IC801-3 4.9
IC3401-1
2.1 IC801-4 0 IC3401-2
3.1 IC801-5 0 IC3401-3
GND IC801-6 0.3
IC3401-4
IC801-7 0
2.5 IC3401-5
GND IC801-8 0 IC3401-6
GND IC801-9 0 IC3401-7
2.6 IC801-10 4.9
IC3401-8
5.1 IC801-11 GND IC3401-9
2.9 IC801-12 4.8 IC3401-10
2.6 IC801-13 GND IC3401-11
2.5 IC801-14 4.9
IC3401-12
GND IC801-15 1.9 IC3401-13
3.6 IC801-16 0.2 IC3401-14
4.4 IC801-17 2.1 IC3401-15
4.4 IC801-18 GND
IC3401-16
GND IC801-19 2.2 IC3401-17
GND IC801-20 2.0 IC3401-18
GND IC801-21 GND IC3401-19
GND IC801-22 4.9
IC3401-20
2.4 IC801-23 GND IC3401-21
2.2 IC801-24 GND IC3401-22
2.2 IC801-25 4.8 IC3401-23
0 IC801-26 0.3
IC3401-24
3.2 IC3401-25
POWER ON: POWER OFF:
IC801-27
4.9 0
GND IC3401-26
GND IC801-28 3.9 IC3401-27
GND IC801-29 2.6
IC3401-28
2.3 IC801-30 0 IC3401-29
GND IC801-31 4.9 IC3401-30
2.2 IC801-32 3.6 IC3401-31
2.6 IC801-33 4.9
IC3401-32
2.2 IC801-34 3.7 IC3401-33
2.9 IC801-35 4.8 IC3401-34
2.9 IC801-36 4.9
IC3401-35
GND IC801-37 4.9
IC3401-36
2.5 IC801-38 4.8 IC3401-37
25.9 IC801-39 0.2 IC3401-38
2.9 IC801-40 0
IC3401-39
GND IC801-41 0
IC3401-40
11.5 IC801-42 0 IC3401-41
26.5 IC3401-42
2.6
IC3401-43
Note: Voltages were measured with offset color-bar signal and controls set for normal picture.
TV OUT-L
39
TV OUT-R
38
LS OUT-L
4
3 LS OUT-R
33 34
FIXED
AUDIO OUT (L)
K1003
FIXED
FIXED AUDIO
AUDIO OUT (R) OUT
VIDEO IN
K1011
AUDIO IN (L) FRONT
AV IN
(Vertical Output)
VIDEO IN (R)
Q001
POWER OFF
Q005
NOISE AUDIO +B K011
CANCEL SWITCH HEADPHONES
AUDIO +B
L 7
SP901
1
ABL LEFT
SPEAKER
2 IC001
AUDIO
AMP. SP902
R 6 3
RIGHT
V
SPEAKER
DEFLECTION
YOKE
(Horizontal Output)
H L902
5
1 IC501
VERT.
OUTPUT
5
ABL
1 6/7
H.V.
T402
HORIZ. FOCUS
OUTPUT
SCREEN
TRANS.
HEATER
9
Q402 V +B
3
HORIZ.
LOW +B
OUTPUT
8
4
D482
Q721 -R OUT
Q711 -G OUT
Q901
PIX TUBE
Q701 -B OUT
D481
+200V
D492
AUDIO +B
15V
D802
D483
VERT +B
+26V
D428
D429
(13V)
ANODE LEAK
(7V) DETECT.
R428
g8fkm
Volts/Mode Device/Pin # Volts/Mode Device/Pin # Volts/Mode
GND IC3401-44 4.1
POWER ON: POWER OFF:
Q613-B
GND IC3401-45 4.2 0.2
GND IC3401-46 GND
POWER ON: POWER OFF:
Q613-C
GND IC3401-47 4.1 4.7
4.9 IC3401-48 4.1 Q613-E GND
4.9
POWER ON: POWER OFF: POWER ON: POWER OFF:
Q001-B Q627-B
GND 0.7 0 12.7
5.0 POWER ON: POWER OFF: POWER ON: POWER OFF:
Q001-C Q627-C
0 6.3 13.2
4.1
Q001-E GND
4.1
POWER ON: POWER OFF:
Q627-E
Q005-B 9.6
4.1 13.3
Q005-C 10.3
4.1
POWER ON: POWER OFF:
Q005-E 10.3 Q635-B
4.0
3.6
Q135-B 2.2
3.7
POWER ON: POWER OFF:
Q135-C 5.0 Q635-C
GND 29.2
Q135-E 1.5
4.1
POWER ON: POWER OFF:
Q202-B 1.7 Q635-E
4.0
4.1
Q202-C GND
4.1
POWER ON: POWER OFF:
Q202-E 2.3 Q681-B
4.1 0.7
Q208-B 2.5
4.9
POWER ON: POWER OFF:
Q208-C GND Q681-C
0
4.1
Q208-E 3.1
1.3 Q681-E GND
Q401-B 0.3
1.3
POWER ON: POWER OFF:
Q401-C 17.7 Q693-B
0.5
0
Q401-E GND
GND
POWER ON: POWER OFF:
Q402-B 1.1
Q693-C
3.2 29.1
Q402-C N/A
9.1
POWER ON: POWER OFF:
Q402-E 1.1 Q693-E
0.4
0
Q486-B 9.9
4.1
POWER ON: POWER OFF:
Q486-C 11.6 Q695-B
4.1 29.1
Q486-E 9.2
3.7 Q695-C GND
Q490-B 5.9
3.9
POWER ON: POWER OFF:
Q490-C 6.7
Q695-E
4.1 29.2
Q490-E 5.2
4.1 Q701-B 2.4
POWER ON: POWER OFF:
4.1 Q701-C 154.9
Q601-G
0.1 0.4
1.9 Q701-E 2.2
POWER ON: POWER OFF:
4.1 Q601-D Q711-B 2.4
15.1 164
4.1 Q711-C 158.0
POWER ON: POWER OFF:
2.0 Q711-E 2.2
Q601-S
5.6 0
4.1 Q721-B 2.5
POWER ON: POWER OFF:
4.1 Q611-B Q721-C 141.0
4.6 0.8
4.1 Q721-E 2.4
POWER ON: POWER OFF:
0 Q611-C Q831-B 4.2
14.4 1.7
4.1 Q831-C 4.9
POWER ON: POWER OFF:
4.1 Q611-E Q831-E 4.9
5.6 0.4
4.1 Q1071-B 2.9
POWER ON: POWER OFF:
4.1 Q612-B Q1071-C GND
4.6 0.8
4.1 Q1071-E 2.4
Q612-C GND
4.1
POWER ON: POWER OFF:
GND
Q612-E
5.6 0.4
4.1
— 27 —

WAVEFORMS

IC101- 17 IC101- 18 IC101- 19
(R-Output) (G-Output) (B-Output) (Video Input)
3.4V HORIZ 3.4V HORIZ 3.4V HORIZ 1.0V HORIZ
IC501- 5 IC501- 1 Q202-E (TP16)
(Horizontal Drive)
(Inverting Input) (Internal Video)
58 VERT 0.6V VERT 1.0V HORIZ 2.1V HORZ
Q402- B T402- 9
Q601- G
(Power Switching) (Heater)
21V HORZ 15V 50KHz 28V HORIZ
0.1
0.1
8.0
0
8.0
1.3
9.0
1.3
0
8.1
6.5
8.4
6.0
8.8
9.2
— 28 —
IC101- 52
Q401- B