Haier HTX21S31 User manual

Category
CRT TVs
Type
User manual

Haier HTX21S31 is a 21-inch color television with a flat square CRT and a variety of features. It supports both NTSC and PAL M/N color systems and has 181 channels. The OSD menu can be displayed in English, French, Spanish, or Portuguese. The TV has front audio/video inputs, an AV output, and a headphone socket. It also has a built-in stereo sound system with 2 speakers and 2W of audio output power.

Haier HTX21S31 is a 21-inch color television with a flat square CRT and a variety of features. It supports both NTSC and PAL M/N color systems and has 181 channels. The OSD menu can be displayed in English, French, Spanish, or Portuguese. The TV has front audio/video inputs, an AV output, and a headphone socket. It also has a built-in stereo sound system with 2 speakers and 2W of audio output power.

NO:M-LA-EC-2199-76812 -Edition: 2002.12.30
HT
X21S31
COLOR TELEVISION
Service Manual
Haier
Features
PAL M/N, NTSC M
Front Audio/Video input
V-CHIP, CCD
181 Channel
Haier Group
MODEL: HTX21S31
1
CONTENTS
1 Contents--------------------------------------------------------------------1
2 Product Code illumination and Series Introduction--------------------2
3 Features--------------------------------------------------------------------------------3
4 Safety Precautions------------------------------------------------------------------4
5 Warning and Cautions-------------------------------------------------------------5
6 Net dimension----------------------------------------------------------------------11
7 Parts and Functions--------------------------------------------------------------12
8 Remote Controller Functions--------------------------------------------------13
9 Program Diagram------------------------------------------------------------------14
10 Maintenance Service and Trouble shooting------------------------------15
11 Circuit Diagram---------------------------------------------------------------------18
12 Circuit Explanation----------------------------------------------------------------22
13 Adjustment---------------------------------------------------------------------------24
14 Exploded View----------------------------------------------------------------------27
15 List of Parts--------------------------------------------------------------------------28
16
Damageable Parts List-----------------------------------------------------------41
17
Information of Resistors and Capacitors----------------------------------41
CONTENTS
2
2.
Product Code illumination and Series Introduction
H
T X 21 S31
Haier
Toshiba
CRT size (unit: inch)
Color television appearance
Product Code illumination and Series Introduction
3
3.
Features
MODEL
HTX21S31
MODEL
HTX21S31
NO.
ITEM
FUNCTION
NO.
ITEM
FUNCTION
1
Main IC 76814
24
Digital curtain
2
CRT
Flat square 25
Slow fading on & off
3
Color system
NTSC 26
Semitransparent menu
4
Audio system
M 27
Non-flashing channel changing
5
Number of channels
181 28
ZOOM
6
OSD language
E
F S P
29
16:9 mode
7
PICTURE
Multi-picture modes
30
Games
8
AV stereo
31
Calendar
9
Super woofer
32
Child-lock
10
Surrounding sound
33
Multi-functional lock
11
Treble/bass boost
34
No-picture listening
12
Left/right balancer
35
Background light
13
NICAM
36
Auto-timer on
14
Multi-audio modes
37
CCD
15
Tone adjuster
38
SOFTWARE
V-CHIP
16
MTS/SAP
39
Number of built-in speakers
2
17
AUDIO
Auto-volume leveling
40
Audio output power (W)
2
18
AV input
Front 1 41
Total power input W
70
19
AV output
42
Voltage range
V
90VAC-250V
AC
20
DVD terminal
43
Power frequency
Hz
60
21
S-video jack
44
Time of sleep timer (MINS)
120
22
Headphone socket
45
Net weight (KG)
23.5
23
JACK
SCART socket
46
Gross weight (KG)
25
47
Net dimension (MM)
610X475X46
5
48
Packaged dimension (MM)
685X545X52
0
49
Quantity for 20' container
50
Quantity for 40' container
51
PARAMETER
Quantity for 40' high container
Features
4
4.
Safety Precautions
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many electrical identify these parts and mechanical parts in this chassis have special safety-related
characteristics! In the Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of the manufacturer.
General Guidance
An Isolation Transformer should always be used during the servicing of a receiver whose chassis is
not isolated from the AC power line. Use a transformer of adequate power rating as this protects the
technician from accidents that might result in personal injury caused by electrical shocks.
It will also protect the receiver and it’s components from being damaged by accidental shorts of the
circuitry that might be inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a specified one.
When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor
10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Due to the high vacuum and large surface area of the picture tube, extreme care should be taken in
handling the Picture Tube. Do not lift the Picture Tube by its Neck.
X-RAY Radiation
Warning:
The source of X-RAY RADIATION in this TV receiver is the High Voltage Section and the Picture
Tube.
For continued X-RAY RADIATION protection, the replacement tube must be of the same type as
specified in the Replacement Parts List.
Before returning the receiver to the customer,
Always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as
antennas, terminals, etc., to make sure that the set is safe to operate without any danger of electrical
shock.
Safety Precautions
5
5.
Warning and Cautions
CAUTION: Before servicing receivers covered by this service manual and its supplements and
addenda, read and follow the SAFETY PRECAUTIONS.
1. When
y
ou clean the TV set, please pull
out the power plu
g
from AC outlet. Don't
clean the cabinet and the screen with
benzene, petrol and other chemicals.
4. To prevent the TV set from firing and
electric shock, don't
make the TV set rain
or moisture.
2.
In order to prolon
g
the usin
g
life of the
TV set, please place it on a ventilated
place.
5. Don't open the back cover, otherwise it is
possible to damage the components in the
TV set and harm you.
3.
Don't place the
TV set in the
sunshine or near
heat source.
6. When the TV set isn't going to be used
for long time or it is in thunder and
lightening, please pull out the plug from AC
outlet and the antenna plug from the cover
of the TV set.
Explanation on the display tube
Generall
y
, it is not needed to clean the tube surface. However, if necessar
y
,its surface can be
cleaned with a dr
y
cotton cloth after cuttin
g
off the power.Don't use an
y
cleanser. If usin
g
hard
cloth, the tube surface will be damaged.
Warnin
g
and Cautions
6
NOTE: If unforeseen circumstances create conflict between the following servicing precautions and
any of the safety precautions, always follow the safety precautions. Remember: Safety First.
General Servicing Precautions
1). Always unplug the receiver AC power cord from the AC power source before:
a. Removing or reinstalling any component, circuit board module or any other assembly of the
receiver.
b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.
CAUTION: A wrong substitution part or incorrect installation polarity of electrolytic capacitors
may result in an explosion hazard.
d. Discharging the picture tube anode.
2). Test high voltage only by measuring it with an appropriate high voltage meter or other
voltage-measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not
test high voltage by “drawing an arc”.
3) .Discharge the picture tube anode only by (a) first connecting one end of an insulated clip lead to
the degaussing or kine aquadag grounding system shield at the point where the picture tube socket
ground lead is connected, and then (b) touch the other end of the insulated clip lead to the picture
tube anode button, using an insulating handle to avoid personal contact with high voltage.
4) .Do not sprays chemicals on or near this receiver or any of its assemblies.
5). Unless specified otherwise in this service manual, clean electrical contacts only by applying the
following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive
applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication of contacts is not required.
6). Do not defeat any plug / socket B+ voltage interlocks with which receivers covered by this
service manual might be equipped.
7). Do not apply AC power to this instrument and/or any of its electrical assemblies unless all
solid-state device heat sinks are correctly installed.
8) Always connect the test receiver ground lead to the receiver chassis ground before connecting
the test receiver positive lead.
Always remove the test receiver ground lead last.
9). Use with this receiver only the test fixtures specified in this service manual.
CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.
Electrostatic ally Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such
Warning and Cautions
7
components are usually called Electrostatic ally Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field effect transistors and semiconductor “chip”
components. The following techniques should be used to help reduce the incidence of component
damage caused by static electricity.
1) Immediately before handling any semiconductor component or semiconductor- equipped
assembly, drain off any electrostatic charge on your body by touching a known earth ground.
Alternatively, obtain and wear a commercially available discharging wrist strap device, which should
be removed to prevent potential shock prior to applying power to the unit under test.
2) After removing an electrical assembly equipped with ES devices, place the assembly on a
conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the
assembly.
3) Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4) Use only an anti-static type folder removal device. Some solder removal devices not classified as
“anti-static” can generate electrical charges sufficient to damage ES devices.
5) Do not use freon-propelled chemicals. These can generate electrical charges sufficient to
damage ES devices.
6) Do not remove a replacement ES device from its protective package until immediately before you
are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted
together by conductive foam, aluminum foil or comparable conductive material).
7) Immediately before removing the protective material from the leads of a replacement ES device,
touch the protective material to the chassis or circuit assembly into which the device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety
precautions.
8) Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise even
some normally harmless motions such as mutual brushing of your clothes’ fabric or lifting of your
foot from a carpeted floor might generate static electricity sufficient to damage an ES device.)
General Soldering Guidelines
1) Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will
maintain tip temperature within the range of 500
o
F to 600
o
F.
2) Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.
3) Keep the soldering iron tip clean and well tinned.
4) Thoroughly clean the surfaces to be soldered. Use a mall wire bristle (0.5 inch, or 1.25cm) brush
with a metal handle. Do not use freon-propelled spay-on cleaners.
5) Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature. (500
o
F to 600
o
F)
b. Heating the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-type solder removal device with
solder braid.
Warning and Cautions
8
CAUTION: Work quickly to avoid overheating the circuit board printed foil.
1) Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature. (500
o
F to 600
o
F)
b. First, hold the soldering iron tip and solder the strand against the component lead until the
solder melts.
c. Quickly move the soldering iron tip to the junction of the component lead and the printed
circuit foil, and hold it there only until the solder flows onto and around both the component
lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit board printed foil.
d. Closely inspect the solder area and remove any excess or splashed solder with a small
wire-bristle brush.
Remove /Replacement
Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and
then bent flat against the circuit foil. When holes are of slotted type, the following technique should
be used to remove and replace the IC. When working with boards using the familiar round hole, use
the standard technique as outlined.
Removal
Desolder and straighten each IC lead in one operation by gently prying up on the lead with the
soldering iron tip as the solder melts.
Draw away the melted solder with an anti-static suction-type solder removal device (or with solder
braid) before removing the IC.
Replacement
Carefully insert the replacement IC in the circuit board.
Carefully bend each IC lead against the circuit foil pad and solder it.
Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic
coating to the areas).
“Small-Signal” Discrete Transistor
Removal/Replacement
Remove the defective transistor by clipping its leads as close as possible to the component body.
Bend into a “U” shape the end of each of three leads remaining on the circuit board.
Bend into a “U” shape the replacement transistor leads.
Connect the replacement transistor leads to the corresponding leads extending from the circuit board
and crimp the “U” with long nose pliers to insure metal to metal contact then solder each connection.
Power Output, Transistor Device
Removal/Replacement
Heat and remove all solder from around the transistor leads.
Warning and Cautions
9
Remove the heat sink mounting screw (if so equipped).
Carefully remove the transistor from the heat sink of the circuit board.
Insert new transistor in the circuit board.
Solder each transistor lead, and clip off excess lead.
Replace heat sink.
Diode Removal/Replacement
Remove defective diode by clipping its leads as close as possible to diode body.
Bend the two remaining leads perpendicularly to the circuit board.
Observing diode polarity, wrap each lead of the new diode round the corresponding lead on the
circuit board.
Securely crimp each connection and solder it.
Inspect (on the circuit board copper side) the solder joints of the two “original” leads. If they are not
shiny, reheat them and if necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1) Clip each fuse or resistor lead at top of the circuit board hollow stake.
2) Securely crimp the leads of replacement component around notch at stake top.
3) Solder the connections
CAUTION: Maintain original spacing between the replaced component and adjacent components
and the circuit board to prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that
bonds foil to the circuit board causing the foil to separate from or “lift-off” the board. The following
guidelines and procedures should be followed whenever this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the following procedure to install a jumper
wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).
1) Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper
as absolutely necessary).
2) Carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining
copper pattern.
3) Bend a small “U” in one end of a small gauge jumper wire and carefully crimp it around the IC pin.
Solder the IC connection.
4) Route the jumper wire along the path of the out-away copper pattern and let it overlap the
previously scraped end of the good copper pattern. Solder the overlapped area and clip off any
excess jumper wire.
Warning and Cautions
10
At other connections
Use the following technique to repair the defective copper pattern at connections other than IC Pins.
This technique involves the installation of a jumper wire on the component side of the circuit board.
1) Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to insure that a hazardous condition will not exist if the jumper
wire opens.
2) Trace along the copper pattern from both sides of the pattern break and locate the nearest
component that is directly connected to the affected copper pattern.
3) Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of
the pattern break to the lead of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so that it does not touch components or
sharp edges.
Warning and Cautions
11
6.Net dimension
Haier
Net dimension
12
7.Parts and Functions
HTX21S31 TV
TV Rear Panel
1
ANT
Picture Tube
AV
Left Speaker
TV/AV alteration button
Menu button
Volume up/down button
Channel up/down button
input
Front
11.Right speaker
Audio (R) input
Power indicator
Power switch
Parts and Functions
13
8.Remote Controller Functions
1. Power Button
2. Tim e & Channel D is p la y B u tto n
3. Rating Button
TV Program (V-Chip Setup)
4. Last Channel R e c a ll Button
5. Volum e(+/-) Select Button
6. Personal Preference Select
7. Channel(+/-) Select Button
8. Menu Select Button
9. Audio Select Button
10.Direct Access Channel Select
11. TV/AV Input Button
12. M ute Button
13. Sleep Tim er
14.SYSTEM selection
1 2 3
654
7 8 9
0
MENU RECALL
RATING
CH+
VOL+
CH-
SOUND
P.STD
1
2
3
4
5
6
7
8
9
TV/AV
DISP
SYS
Remote Controller Functions
14
9.
Program Diagram
Insert the power plug into the power line socket and insert the antenna plug into the antenna socket
on the rear panel. Press down the power switch of the TV set. The red indicator light goes on.
Program preset
A 1). Auto searching and storing program
Press MENU button on the remote controller to call up the “PREST” menu on the screen. Use the
” key to select the bar “auto search” then press the “ ” to make sure. If you want to stop,
press the key “ ”.
2). Deleting channel number
Press channel up/down buttons to select a channel to skip. Press MENU to call up the “PREST”
menu on the screen. Then Press the” “item to select the bar “Add/Delete”
then use the “ ” key to select Add or Delete.
B Volume tuning
Press VOLUME buttons VOL- to decrease and VOL+ to increase the volume.
C Personal preference settings
Picture modes
Press P.STD repeatedly to change among Personal, Stadard, Vvivid, Soft to change the Picture Mode.
Program Diagram
15
10
.
Maintenance service and trouble
shooting
1). Adjustment item Explanation:
OSD Explanation Range Remark
0 H.PHASE H.PHASE 0~31
1 NT.H.PHASE H.PHASE 0~31 No used
2 H.BLK.LEFT 0~7
3 H.BLK.RIGHT 0~7
4 V.SIZE Vertical Size 0~127
5 V.LINE Vertical Linearity 0~31
6 V.POSI Vertical DC 0~63
7 V.SC Vertical S-Correction 0~31
8 NT.V.SIZE Vertical Size -32~+31
9 NT.V.LINE Vertical Linearity -16~+15
10 NT.V.POSI Vertical DC -32~+31
11 NT.V.SC Vertical S-Correction -16~+15
12 RF.AGC RF AGC Delay 0~63
13 VOL.OUT Volume Control 0~127
14 OSD H.POSI 0~127
15 OSD V.POSI 0~31
16 INPUT LEVEL 0~15
17 SPECTRAL 0~63 (0~31)PHILIP IC
18 WIDEBAND 0~63 (0~31)PHILIP IC
19 STEREO VCO 0~63 No used
20 FILTER SET 0~63 No used
21 SAP VCO 0~63 No used
2). Setting item explanation:
OSD Function
0 LA76814/LA768
12
0: select LA76814 1:select LA76812
1 SAP IC SELECT 0:TDA9850;1:CXA2104;2:TDA9855;3:UPC1815B
2 SUB.CONT Sub-contrast(0-31)
3 SUB.COLOR Sub-color(0-63)
4 SUB.SHARP Sub-sharpness(0-31)
5 SUB.TINT Sub-tint(0-63)
6 BLK.STR.DEF Black level stretch (0:on; 1:off)
7 AFC GAIN AFC gain (0:low; 1:high)
8 V.SEPUP Vertical synchronize sensitive 0 low;1:high
9 CD.MODE Count down mode(LA76814:0/1;LA76812:0-7)
10 DIGITAL OSD Digital OSD setting (0:anlyos 1:digital)
11 OSD CONT. OSD contrast (0-127)/LA76814 (0-3)
12 GRAY MOD Gray mode (0/1)
13 B.GAM.SEL Blue γ select (0-3)
14 RG.GAM.DEF Red green γ define (0/1)
15 FBPBLK.SW FBPBLK.SW (0/1)
16 BRIGHT ABL.TH Bright.abl.threshold(0-7)
17 EMG.ABL.DEF Emg.abl.def
.
Maintenance service and trouble
shooting
16
18 BRT.ABL.DEF
Brt.Abl.Def (0/1)
19 MID.STP.DEF
Mid.Stp.Def (0/1)
20 RY/B-Y G.BL
R-Y/B-Y Gain Balance (0~15) No use (LA76814)
21 R-Y/B-Y ANG
R-Y/B-Y Angle (0~15)
22 C.KILL.OFF
C_Kill OFF (0/1)
23 SND.TRAP
Sound Trap (0~7)
24 VOL.FIL
Volume Filter Defeat
25 VIF.SYS.SW
Video IF setting (0 45.75M 1 58.75M) For LA76814
26 VIDEO.LELEVL
Video Level (0~7)
27 FM.LEVEL
FM Level (0~31)
28 POWER OPT
0 turn TV on twice 1 memory 2 3
Turn TV on first
29 POWER FLAG
0 Without OSD power on function 1 With OSD power off function
30 SEARCH CHECK
1 With auto-programmed function turning TV on.
31 SEARCH SPEED
0 Slow search speed 1 Fast search speed
32 AV OPTION
0 without AV 1 one AV input 2 two AV input 3 Three AV input
33 POSITION L/R
0 Logo display on left top of screen
1 Logo display on right top of
screen
34 BLUE BACK
0 No blue background without signal 1 Blue background without
signal
35 BLACK BACK
0 No background changing channel 1 Background changing channel
36 STEREO OPTION
0 No stereo 1 Stereo
37 WOOF/H.PHONE
No used
No used
38 WOOF VOL.OPT
No used
No used
39 SENSITIVITY
No used
No used
40 V.MUTE P.OFF
0 Before POWER OFF, dont cut off
video input
1 Before POWER OFF, cut off
video input
41 CCD OPTION
0 No CCD 1 CCD
42 V-CHIP OPTION
0 No V-CHIP 1 V-CHIP
43 PASSWORD OPT.
0 No V-CHIP password 1 V-CHIP password
44 COMB.OPTION
0
NOTHING
1
NOTHING
45 TUNER OPTION
0 TDF-3M3 tuner 1 PHILIP UV1336B tuner
46 GAME OPTION
0 No game 1 Game
47 SCREEN OPTION 0:no curtain effect 1: curtain for on effect 2:curtain for off
effect 3:curtain for on/off effect
.
Maintenance service and trouble
shootin
g
17
Check to see if
Fuse3 is normal
No lig
Abnormal
Check VD501, C507,
V513, etc.
Check to see if the
collector voltage of V552
is 0V
Check N101
ect
Check to see
if , 12v,
5v is normal
Check the control
voltage of V552 or
CPU power
The failure of
horizontal unit or
N551 N552
Normal
Normal
Normal
Abnormal
Check to see 110V 180V
etc. voltage is normal
Test to see all terminal
Resistance of load
Is normal
Check
p
ower unit
Check to see if
rectifying tube
is normal
Change
rectifying tube
Check the
Loader
A
bnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Maintenance Service and Trouble shooting
18
11. Circuit Diagram
Circuit Diagram
NO:M-LA-EC-2199-76812 -Edition: 2002.12.30
HR76814
1
NTSC-M PAL-M,N
HT-2199(LA76812)
11Tuesda
y
, March 12, 2002
Title
Size Document Number Rev
Date: Sheet of
4
FO
H-PULSE
AC110V
8
9
12
HV
Y
K6D
2
1
13
B1-ADJ
CRT BOARD
4
8
3
5
60HZ
10
C
21
ABL
FO
14
SCREEN
11
2
LIVE AREA
3
2
2
8
11
2
10
71
1
1
1
1
10
3
34
5
9
9
3
4
2
4
2
3
R442
R128
X
A101
UV1336B
IF
33V
5V
5V
SDA
NC
AGC
SCL
R815
X
B4
12V
R602
1/6W10K
C406
100V0.068U
R459
1W1
C453
63V1000
C123
63V1000
R109
1/6W1K
A701
HS0038
R745
1/6W220
R720
1/6W10K
C701
16V47
+
R907
2W10K
R900
1/6W10K
C931
16V10
+
V932
2SC1815
C435
1.6KV7500
XS401
SCN-4Y
L432
YC0008
L909
LJ0107CHA
C554
1KV470
R105
1/6W100
C412
50V1
+
R832
1/6W1K
C805
X
+
R820
X
R805
1/6W27K
R750
1/6W22K
R803
1/6W56K
R232
1/6W10K
R402
1/6W3.3K
R454
1/6W3K
R408
1/6W2.2K
R202
1/6W1.2K
C111
63V0.01U
R754
1/6W10K
C713
50V1
+
R703
1/6W4.7K
C705
63V18P
B1
110V
K9N
TJC2-1A
C913
63V56P
R912
1/6W100
R434
5W3.3K
V432
2SD1651
C502
AC250V0.1U
C444
160V4.7
+
C807
X
R809
X
XS801-1
AUDIO
R270
J
R611
1/6W3.3K
L441
Z0449
R802
1/6W100
R242
1/6W100
R458
1/6W1K
VD401
1N4148
C206
16V47
+
R113
1/6W100K
R759
1/6W2.2K
R738
1/6W4.7K
R734
1/6W10K
B3
180V
R928
1/2W2.7K
C901
63V390
R502
6W1
R551
2WJ47K
C572
10V470
+
C139
50V0.47
+
B1
110V
C208
50V0.47
+
C603
16V100
+
R727
1/6W470
R721
1/6W10K
R724
1/6W4.7K
N451
LA7840
GND
1
OUTPUT
2
VCC1
3
NON INPUT
4
INPUT
5
VCC2
6
PUMP OUT
7
C616
25V1000
+
C452
35V1000
+
C121
100V0.022U
C110
63V0.01U
R764
1/6W22K
C720
63V0.01U
R739
X
SW703
V+
R916
1/6W680
W902 JG0034
R553
1/6W4.7K
C561
160V220
+
R933
1/6W1.5K
R102
1/6W100K
L201
15UH
B7
5V
R818
X
C803
16V10
+
V601
2SA1015
R748
1/6W22K
C404
16V220
+
R452
1/6W1
L451
18UH
T101
HA6019
C112
63V0.01U
V102
2SC2216
R751
1/6W22K
R701
1/6W27K
C703
63V0.01U
B6
12V
R926
1/6W680
C903
63V56
R491
1W2.2
XS402
TJC2-5A
W405
EU2Z
R821
1/6W4.7K
VD412
HZ7C1
C532
AC400V470
R814
X
R811
1/6W75
B6
12V
R409
1/6W680
N702
BR24C04
VCC
8
GND
7
SCL
6
SDA
5
1
2
3
4
C403
63V0.47U
C802
16V10
+
C408
50V1
+
C458
100V0.033U
R457
1/6W39K
C433
500V3900
C276
16V10
+
C204
50V1
+
C116
63V0.01U
R757
1/6W22K
R726
1/6W270K
R706
1/6W1.5K
B5
5V
C933
16V1000
+
U901
XXXXXXX
C921
63V390
C934
50V0.47
+
R501
1/2W220K
R556
1/6W22K
VD553
1N4148
B4
24V
C102
63V0.01U
B902
3W16OHM
C604
16V100
+
SW707
POWER
R567
1/6W1.2K
C729
63V0.01U
C614
X
C245
63V0.01U
G201
4.43
C119
63V0.01U
C101
16V100
+
R762
1/6W22K
R743
1/6W3.3K
R730
1/6W10K
SW705
MENU
C932
16V10
+
V922
2SC2688
C436
2KV470
C434
160V10
+
00
0
L501
JLB1606
VD503
RM11C
RP551
2AL2K
C503
1KV1000
R446
1/4W220K
R472
1W1
R101
1/6W33K
R415
1/6W3.9K
C808
X
XS801-2
X
R604
1/6W4.7K
C401
50V0.47
+
C454
50V1
+
R121
1/6W1K
R110
1/6W220
R747
1/6W22K
R708
1/6W10K
L701
39UH
R917
2W10K
V912
2SC2688
V902
2SC2688
TP-G
TEST
C504
1KV1000P
VD474
EU1
VD472
EU1
R244
1/6W2.7K
R412
1/6W8.2K
C809
2200
R813
X
VD801
X
R120
J
R807
1/6W220
R752
1/6W22K
R728
1/6W470
R804
1/6W82
C231
50V1
R403
1/6W330K
R455
1/6W12K
R432
J
R271
1K
R204
1/6W560K
L102
15UH
R755
1/6W22K
R725
1/6W330
R704
1/6W3.9K
B2
17V
XP901
SCN-4Y
C923
63V56P
R922
1/6W100
R441
1/2W1K
FU501
T2.5A250V
VD506
RM11C
VD505
RM11C
V554
2SB892
N701
LC86F3248A
NOTHING
1
NOTHING
2
NOTHING
3
NOTHING
4
NOTHING
5
NOTHING
6
POWER
7
VT
8
GND
9
XTAL1
10
XTAL2
11
VDD
12
KEY IN
13
AFT IN
14
AGC IN
15
NC
16
RESET
17
FILT
18
CVBS-IN
19
V SYNC
20
H SYNC
21
R OUT
22
G OUT
23
B OUT
24
BLANK
25
I
26
SDA0
27
SCL0
28
SDA1
29
SCL1
30
SAFTY
31
S-VHS
32
SD
33
IR
34
SIF
35
NOTHING
36
NOTHING
37
AV2
38
AV1
39
AV/TV
40
NOTHING
41
NOTHING
42
R474
1W1
R471
6W3.9
C474
250V22
+
XP601
SCN3-2Y
XS802-1
VIDEO
B6
12V
Z101
LBN45U
38M
R612
1/6W470
C570
10V470
+
R613
X
R243
1/6W270
C457
35V1000
+
C441
200V0.33U
C207
100V0.01
R114
1/6W100K
R760
1/6W22K
R740
1/6W4.7K
R729
1/6W150K
SW701
CH+
B6
12V
C939
2KV1000
XS901
GZS8-6-4F
XS501
TJC2-2A
VD504
RM11C
C565
25V1000
+
C551
2KV470
L442
101K
R127
1/6W330
R718
2W10K
R205
1/6W22K
R816
X
R272
1/6W3K
VD601
1N4148
VD701
BT205-L
R722
1/6W1.5K
B901
3W16OHM
R461A
1/2W120
R451
1/6W5.6K
C122
63V0.01U
R108
1/6W5.6K
R765
1/6W22K
R744
1/6W220
R737
X
R709
1/6W390K
SW704
V-
R932
15K
R935
39
R554
1/6W150K
C450
16V100
+
R104
1/6W100
R203
1K
B6
12V
XS802
X
R819
X
R806
1/6W68K
R735
1/6W10K
C407
50V1
+
C405
63V0.01U
R453
1/6W12K
VD451
EM01Z
R201
1/6W1K
R111
1/6W82
R753
1/6W22K
R702
1/6W8.2K
C704
63V15P
B7
5V
R940
1/4W33
R914
1/6W330
R902
1/6W100
B1
110V
XP402
TJC2-5Y
R552
1/2W100K
C821
50V1
+
RL551
G2R-1A
V802
X
R810
1/6W75
R808
X
C455
63V10P
VD921
1N4148
VD911
1N4148
C431
X
C402
63V0.22U
XS403
SCN-5
R801
1/6W22K
R241
1/6W100
C456
50V4.7
+
T431
JDT1904
R273
1/4W4.7K-J
C205
63V0.01U
C117
50V1
+
R758
1/6W22K
R736
1/6W4.7K
R731
1/6W10K
B5
5V
R908
1/2W2.7K
C911
63V390
C432
500V1000
U902
EW0130KB
R566
1/6W10K
C506
1KV1000P
C501
AC250V0.1U
G701
32.768K
B7
5V
C140
63V470
B7
5V
R206
1/6W47K
C611
100V0.022U
VD901
1N4148
R707
1/6W680
L431
YC0008
R400
1/4W270
C617
63V0.01U
R233
1/2W1.5K
C451
35V100
+
C120
100V0.022U
C103
16V2.2
+
R763
1/6W22K
C719
16V47
+
R741
X
R733
1/4W8.2K
SW706
X
R906
1/6W560
N551
AN7812
1
2
3
C505
1KV1000
N552
AN7805
1
2
3
R103
1/6W1K
VD411
EU1
C137
50V0.47
+
R817
X
XS802-2
X
R601
1/6W10K
R746
1/6W22K
R723
1/6W8.2K
R401
1/6W2.2K
C459
100V0.1U
B4
24V
C126
63V39
R107
1/6W100
R749
1/6W22K
R700
1/6W10K
C702
63V0.01U
B2
17V
R927
2W10K
R904
1/6W330
B1
110V
TP-H
TEST
B6
12V
R822
1/6W1K
V821
2SC1815
R414
1/6W10K
W807
J
R812
X
C124
100V0.01
+
C804
16V470
+
V801
2SC1815
B5
5V
R119
1/6W1K
R756
1/6W22K
C801
16V10
+
T471
JF0501-19129
R404
1/6W1.2K
R460
1/2W180
R456
1/6W12K
R433
1/2W1K
C203
16V4.7
+
C115
16V100
+
R766
1/6W1K
C714
16V2.2
+
R705
1/6W2.7K
B5
5V
XP902
SCN-5Y
R931
1/6W1K
R918
1/2W2.7K
R924
1/6W330
R413
1/6W10K
L433
ZZ0003
R562
RSG-I-FF-125V-750mA
R555
1/2W47K
C564
25V1000
+
C472
35V100
+
C411
25V47
+
XS601
TJC3-2A
C601
16V10
+
V702
2SA1015
C612
16V10
+
R561
1/6W10K
C613
25V1000
+
C244
16V47
+
C118
63V0.01U
C708
50V4.7
+
R761
1/6W22K
R742
1/6W3.3K
R732
1/6W47K
SW702
CH-
N553
AN7805
1
2
3
R569
1/2W 1
RT501
PTH451A7R0Q21
00
0
C533
AC400VM2200
R531
1/2CK5.6M
R502
6W1
R513
1M
R514
1M
V553
2SC1815
C507
450V150
+
R515
2W68K
C516
0.022
VD555
ES1
VD551
RU3A
VD554
EU2Z
L503
JLB1606
C515
0.022
T511
BCK-40-58
VD555
ES1
L505
YC0008
VD512
EG01C
L506
YC0008
VD510
EU2
R515
2W68K
R511
8.2
VD511
EU2
R510
10K
C513
470
V501
2SA1015
VD509
HZ15C
R509
10K
C511
1000
R508
1/6W4.7K
R507
1/6W1.5K
VD508 1N4148
C510
470
VD933
1N4148
C554
1KV470
N501
HPC922
R566
1/6W10K
C518
1KV1000
C513
2KV330
N706
UPC574
VD703
HZ4A2
V703
2SC1815
VD507
IN4148
R506 680
Z201
X4.5
V603
2SC1815
V552
2SC1815
R504
0.1
L504
YC0008
V704
2SC1815
V431
2SC2383-O
V705
2SC1815
V931
2SA1015
N601
LA4225A
INPUT
1
NON INPUT
2
GND
3
OUT
4
VCC
5
VD402
1N4148
V803
X
V602
2SC1815
VD452
1Z75
VD561
HZ6C3
C279
63V0.01U
C278
16V47
+
C277
100V0.01
R271
1/6W150
N101
LA76812
AUDIO OUT
1
FM OUT
2
PIF AGC
3
RF AGC
4
VIF IN1
5
VIF IN2
6
GND(IF)
7
VCC (VIF)
8
FM FIL
9
AFT OUT
10
DATA
11
CLOCK
12
ABL
13
R IN
14
G IN
15
B IN
16
BLANK IN
17
VCC (RGB)
18
R OUT
19
G OUT
20
B OUT
21
AKB IN
22
V OUT
23
RAMP ALC.FIL
24
VCC (H)
25
H AFC FIL
26
H OUT
27
FBP IN
28
VCO IREF
29
CLOCK OUT
30
VCC (CCD)
31
OSD CONTRAST
32
GND (CCD/H)
33
X-RAY
34
KILL FLT
35
APC2 FIL
36
FSC OUT
37
XTAL
38
APC1 FIL
39
SEL VIDEO OUT
40
GND (V/C/B)
41
EXT VIDEO IN
42
VCC (V/C/D)
43
INT VIDEO IN
44
BLK STRETCH FIL
45
VIDEO OUT
46
APC FIL
47
VCO COIL
48
VCO COIL
49
VCO FIL
50
EXT AUDIO IN
51
SIF OUT
52
SIF APC FIL
53
SIF IN
54
C207
100V0.01
2
2
8
11
2
10
7 1
1
1
1
3
3 4
5
9
9
3
4
2
4
3
Circuit Diagram
1 / 1

Haier HTX21S31 User manual

Category
CRT TVs
Type
User manual

Haier HTX21S31 is a 21-inch color television with a flat square CRT and a variety of features. It supports both NTSC and PAL M/N color systems and has 181 channels. The OSD menu can be displayed in English, French, Spanish, or Portuguese. The TV has front audio/video inputs, an AV output, and a headphone socket. It also has a built-in stereo sound system with 2 speakers and 2W of audio output power.

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