Xoceco TS2019, M2019
Xoceco TS2019, M2019
TS2019
(M2019)
CONTENTS
SAFETY PRECAUTION
WARNING:
Service should not be attempted by anyone unfamiliar with the necessary precaution on this receiver. The
following are the necessary precautions to be observed before servicing this chassis.
1) Since the power supply circuit of this receiver is directly connected to the AC power line, an isolation
transformer should be used during any dynamic service to avoid possible shock hazard.
2) Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube.
The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. Use shatter
proof goggles and keep picture tube away from the unprotected body while handling.
3) When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in
place, such as: non-metallic control knobs, insulating covers, shields, isolation resistor-capacitor network
etc.
4) When replacing parts or circuit boards, disconnect the power cord.
5) When replacing a high wattage resistor (oxiode metal film resistor) on the circuit board, keep the resistor
10mm (1/2in) away from circuit board.
6) Connection wires must be kept away from components with high voltage or high temperature.
7) If any fuse in this TV receiver is blown, replace it with the FUSE specified in the chassis parts list.
1
8) Before returning the set to your customer, always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, screwheads, metal overlays, control shafts etc. to
be sure the set is safe to operate without danger of electrical shock. Plug the AC line cord directly into a
220V AC outlet (do not use a line isolation transformer during this check). Use an AC voltmeter having
5000 ohms per volt or more sensitivity in the following manner:
Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15µF, AC type capacitor, between a known good
earth ground (water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC
voltage across the combination of 1500 ohm resistor and 0. 15µF capacitor. Reverse the AC plug at the AC
outlet and repeat AC voltage measurements for each exposed metallic part. Voltage measured must not
exceed 0.3 volts RMS. This corresponds to o.2 milliamp. AC. Any value exceeding this limit constitutes a
potential shock hazard and must be corrected immediately.
AC VOLTMETER
0.15μFD
2
3) Connect the power plug to AC 220V/50Hz, turn on the power switch, wait for normal raster, Check B+ =
110V±0.2V.
Test point B+ B1-5V B2-8V B3-10V B4-32V TH-12V TH-20V TH-200V
DC(V) 110 5 8 12 32 12 20(22) 200
FOCUS ADJUSTMENT
Adjust the FOCUS control (on T301) for well defined scanning lines on the picture screen.
General instruction
1. This chassis’ EEPROM'(N801 M24C08) should copy standard data, if necessary, deal it with “factory
adjustment”. If directly use blank EEPROM, should first preset I2C data, then go on other common
alignment. For factory adjustment method, refer to The appendix: factory menu.
2. If without special indication, the alignment is conducted on the below condition:
a) AC power supply 220 V/50 Hz.
b) The whole unit is preheated for more than 30 min.
3. There is built-in auto degaussing circuit, it will degauss automatically within 1second after turning on.
4. If CRT is with magnetism and affects color purity and convergence, the internal degaussing can not degauss
completely, can use degaussor to degauss externally. If color purity and convergence is still poor, then
do color purity and convergence adjustment.
3
EEPROM copy
B+ check
X-ray protection check
Sub-brightness check
Screen-grid voltage
White balance adjustment
White balance check
AV terminal check
Check
180V
0V
Fig 2: red gun waveform
4.3 Fine adjust white balance (color temperature: 12000K±8MPCD X=0.270±0.008 Y=0.283±0.008 )
4.4 Set contrast,brightness,color all to 0, adjust BRTN to make A-7’s upper left 2 lattice slightly light up.
Checking point
1. High voltage check
1.1 Connect high voltage meter to CRT’s second anode and GND.
1.2 Receive D-8 signal, set user control to “DYNAMIC” state, the high voltage should be 29.0 kV±1 kV
(21” PF and 25”) or 25.0kV±1kV (14” PF) or 26.5kV±1kV (21”).
1.3 When brightness and contrast be set to minimum (zero beam current), the high voltage should not exceed
32 kV.
5
4. Picture and sound check
4.1 Receive standard TV signal.
4.2 Making use of picture control buttons to check color,contrast,brightness,sharpness,tint’s control function.
4.3 Making use of sound control buttons to check volume control function.
5. Sub-brightness check
Receive D-8 signal, set color ,contrast,brightness all to 0, picture’s left side first grid slightly lights.
8. Other control buttons (on the set and on the remote controller) function check.
Factory menu
1. Enter into factory menu to operate.
1.1 Press factory button ,enter into factory menu.
1.2 Use CH+/CH- button to select the menu, use VOL+/VOL- button to enter the function menu.
1.3 In factory menu status, press MENU button to exit.
FIG.3
CONVERGENCE ADJUSTMENT
NOTE: Before attempting any convergence adjustments, the receiver should be operated for at least fifteen
minutes.
10
DEGASSING
- + - +
SPEAKER
COIL
X902 XA01
A1 A2 X602 X902
XV01
782-29FA0-6400
X502
VM PCB
XM03
XM02 MAIN PCB XM01
XM02
782-M2127-010D
11
XM01
CRT
XM03
WIRING DIAGRAM
X403
X201
X402 HORZIONTAL
DRIVER
TRANSFORMER
X401
X302
CRT PCB X301
782-M2035-0200 FOCUS
SCREEN
12
Vin STR-G5653
4
1 D
REG
VIN1
-
+
T.S.D
2 S
+
-
13
ERROR AMP
O.S.C
VIN2 5 O.C.P/F.B
-
+
IC BLOCK DIAGRAM
3 GND
VCC
5V
B ase B and S IF
Input Input
0.22 +
Lout R out A N 5832S A
2.2
0.1
4.7 2.2 + 2.2 2.2 2.2
+ 1000P 2.2
+ GND + + + +
3.3K
0.33 180K
21 23 18 17 19 25 15 30 29 28
L+R AG C
26 P E
4.7 F ilter
22 S IF
D em od
75 s O ffset M atrix
P ilot D et
D e-E m ph C ancel & M ode S W
10K
Input 2
S C L/S T ID
VC A O ffset L-R IC 27
14
P LL D ecoder S D A /S A P ID
C ancel F ilter 24
10K
S IF /B B O ffset
SW S tereo P ilot 32 +
2 C ancel
IC /PA R A 7 C ancel 2.2
F ilter
AG C 8 W ide B and W ide B and W ide B and
SAP SAP S A P out E xpand R M S D et F ilter 3.3
F ilter D em od F ilter 3 +
M O DE 9
S pectral S pectral 10
SAP S pectral 2 + (Ta)
FO M O E xpand R M S D et F ilter
10 D et
5 0.1
N oise D bx
M ode C ontrolS W
M U TE 11 N oise (L-R )/S A P
D et D e-E m ph 3.3
F ilter S w itch 4 + (Ta)
S IF/B B 12 6 0.022
(±10%)
14 13
0.033 0.1 (Ta) 10% Tantalum capacitor
AN7522N
15
1 2 3 4 5 6 7 8 9 10 11 12
Vcc GND
2 6 3
Flyback
Generator
1 -
Power
Amplifier 5
7 +
16
Thermal
Protection
TEA8172
11V
VIDEO
OUT MCU V DD Vcc 8V
5V DIRECT OUT
1 Vp-p 5V Vcc 5V
EXT AUDIO IN
8.7V
RESET
to MCU from MCU
INTER LIMITER
CARRIER IN
OUT
62 61 60 55 58 42 32 30 47 49 28 50 48 4 3 57 56 52 54 53 43
DELAY ADJ ATT
VIF VCOADJ VIF Vcc VIF GND
8.7V 5.7V
5.7Vreg RESET FM AF AUDIO
RF AGC LIMITER ATT 51
59 RF AGC IF AGC VCO VCO DET AMP OUT
OUT
ADJ
24 FAST BLK
63 VIDEO R EXT
VIF VIF INPUT
SAW DET 23 R IN
IN AMP (WHITE)
IF IN 64
BLUE BACK G EXT
APC INPUT 22 G IN
CONTRAST
DET
AFT COLOR DRIVE B EXT 21
2 AFT BRIGHT B IN
OUT R B INPUT
LOCK
DET 14 R
RGB DRIVE
DEFEAT AFT OUT ADJ
BLACK REF MATRIX BRIGHT CLAMP HV
DET AMP
STRETCH GAMMA VIDEO MUTE FILTER CONTRAST 15 G OUT PUT
CLAMP V.OUT
VERTICAL 5 VERTICAL
ACL/ABCL DEMODULATOR EQ
V.RAMP
ELIMINATE COUNT DOWN
33 6
KILLERB
SHARPNESS
VIDEO 20
17
CHROMA KILLER TINT ANGLE V COINB V.SHIFT V.SIZE
TONE BPF TAKE OFF V.PULSE
DET
BGP OUT
Y-SW OUT HVCO ADJ HORIZONTAL DY
DL GEN 1
Y SW BASEBAND BASE BAND
31 TIME COUNT DOWN
LPF DELAY TINT TINT
DL Intelligent
FINE VCO
ACC ACC Monitoring 18
ADJ H STOP
TRAP DET
SW CLK CONT AFC GAIN
F.TRAP HPF Intelligent Monitoring
H VCO AFC 2
LPF H-PHASE
CHROMA AFC 1
TRAP
x2 NC 13 8V
CHROMA VCXO
APC H
DET 12
INV COINCI.
VIDEO/CHROMA DEF
VIDEO/CHROMA
Vcc Hi Vcc Vcc
GND H COINB
41 38 25 35 36 37 39 40 34 29 45 46 17 19 10 7 44 8 9 11
H. OUTPUT
3.58MHz DEF
GND
Cb IN Cr IN FBP
CLOCK INV
TV IN/ Y IN CONTROL OUT
1Vp-p FBP
8V
5V fsc IN
EXT IN /C IN
OUT
1Vp-p
PART LIST
PART# DESCRIPTION LOCA.NO.
100-M20190-11 TS2019
100-M20190-01 M2019
123-30001-04 TWIST WIRE
384-40316-Q0 SPEAKER ST511-01
477-12105-00 DEGAUSS COIL DX-56-2 !
655-21201-128 (2-PINS) LEAD WITH HOUSING
808-1D550-01 INTERFACE SPACE PLATE (SILK-SCREEN
665-62101-01 (6-PINS) LEAD WITH HOUSING
700-60127-00 LED COLUMN
741-10001-02 WIRE FIXED BLADE
742-30005-09 LINE TIE
742-30006-09 GRADING TIE
742-30029-00 POWER CORD CLASPER
742-30032-00 TIE
742-30038-00 TIE
776-37112-40 UL1015 24# 370mm BLACK
808-70239-00 EVA GLUE 150X50X1
838-10012-00 BRAIDED WIARE SPRING
851-23010-14 SCREW SJ2824 ST3X10C-Y
851-23012-14 SCREW SJ2824 ST3X12C-Y
851-24012-14 SCREW SJ2824 ST4X12C-Y
851-24020-11 SCREW SJ2824 ST4X20C-D.Zn
851-24020-14 SCREW SJ2824 ST4X20C-Y
851-23008-11 SCREW SJ2824 ST3X8C-D.Zn
851-23008-11 SCREW SJ2824 ST3X8C-D.Zn
851-53012-11 SCREW SJ2825 ST3X12C-D.Zn
855-96030-11 COMPOSE SCREW ST6X30C-D.Zn
857-10002-09 COTTON FLANNEL
857-10004-00 COTTON FLANNEL
868-20007-00 SLEEVE
868-20140-00A CRTCUSHION
868-20142-00 RUBBER WASHER (δ1.5)
877-50369-0E0A TOUCH SWITCH KEY ( SILVER GREY GR10)
776-99203-01 UL1185 26# 990mm BROWN
887-21135-00 CLASPE RPALSTIC BAG 230X330X0.1
881-60085 BLANK WARNING LABEL
887-20044-01 POWER CORD COVER
887-20171-00 PALSTIC BAG 70-500-0.06
894-30050-11 WASHER GB97.1-85-5-140Hv-D.Zn
100-J21190-02FD ASSEMBLY ACCESSORY RATION
335-2112N-00U CRT54SX538Y22-DC01 THIN !
780-10761J040C BACK CABINET ( MOLD GREY
611-30286J0E1 FRONT CABINET ASS'Y (HIPS V0 SILVER GREY
18
863-80664-00 POLY FOAM (TOP SMALL
863-80665-00 POLY FOAM (BOTTOM SMALL
886-31047-00 CARTON BOX ( BLANK SMALL
887-21096-P0 PE/PEARL COTTONPALSTIC BAG 1100X1000