Haier 29FV6H User manual

附件一（1/1）
COLOUR TELEVISION
SERVICE MANUAL
Models
29FV6H
zFeatures
zStage curtain for open and close effect
z218 programs stored
zMulti-picture modes and sound modes selection
zOn/Off timer
zChild lock
zSoft exchange Count
zAppointment
zDVD component input
Serial Number: 0010550217 Version:00.00 Edition: 2006-08-30
COLOR TELEVISION Model: 29FV6H

2
Contents
Ⅰ．Technical specifications & Safety precautions …………………...3
Ⅱ．Servicing precautions ………………………………………………..5
Ⅲ．Functions & Location of controls ………………………………….11
Ⅳ．Disassembly instructions …………………………………………13
A. Important notes …………………………………………………...13
B. Precautions for handling of picture tube …………………….13
Ⅴ．Specific information ………………………………………………….14
A. Principle integrated circuits…………………………………….14
B. Chip introduction ………………………………………………….18
C. Service mode menu alignment structure ……………………..21
D. The schedule of the main circuit………………………………. 24
Ⅵ． Electrical adjustment ……………………………………………… 25
Ⅶ．Information of Resistors and capacitors …………………………28
Terminal view of transistors …………………………………...29
Ⅷ．Damageable parts list ………………………………………………..30

3
TECHNICAL SPECIFICATION & SAFETY
PRECAUTIONS
POWER SUPPLY: AC 150~250V, 50/60 Hz
zTuning system: frequency synthesized type auto-search fine tuning system；
zIF: 38.9MHz；
zPower consumption: ≤140W；
zAntenna input impedance: 75Ω；
zReceiving system:
a) Color system: PAL BG；AV NTSC3.58/4.43MHz；
b) Broadcast TV system: B/G；
zLanguage displayed: English；
zAudio power: main channels 5W+5W；
zPower supply working range：AC 150V～250V，50/60Hz；
zVideo input: 1.0VP-P (75Ω)；
zVideo output: 1.0VP-P (75Ω)；
zAudio input: 436m Vrms (40KΩ)；
zAudio output: 436m Vrms (more than 600Ω)；
SAFETY PRECAUTIONS
INPORTANT SAFETY NOTICE
These parts are identified by many electrical and mechanical parts in this chassis
have special safety-related characteristics!
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

4
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.
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.

5
II. SERVICING PRECAUTIONS
Warning and Cautions
Explanation on the display tube
Generally, it is not needed to clean the tube surface. However, if necessary, its
surface can be cleaned with a dry cotton cloth after cutting off the power. Don’t use
1. When youclean the TV set, please pull
out the power plug from AC outlet. Don't
clean the cabinet and the screen with
benzene,petrolandotherchemicals.
4. To prevent the TV set from firing and
electricshock,don't
maketheTVsetrain
ormoisture.
2. In order to prolong the using life of the
TV set, please place it on a ventilated
place.
5.Don'topenthebackcover,otherwiseitis
possibletodamagethecomponentsinthe
TVsetandharmyou.
3. Don't place the
TV set in the
sunshine or near
heatsource.
6. When the TV set isn't going to be used
for long time or it is in thunder and
lightening,pleasepulloutthe plugfromAC
outlet and theantenna plugfrom the cover
oftheTVset.

6
any cleanser. If using hard cloth, the tube surface will be damaged.
CAUTION: Before servicing receivers covered by this service manual and its
supplements and addenda, read and follow the SAFETY PRECAUTIONS.
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 spray 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.

7
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.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity.
Such components are usually called Electrostatically 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

8
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 500oF to 600oF.
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.(500o F to 600o 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.
CAUTION: Work quickly to avoid overheating the circuit board printed foil.
6. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.(500o F to 600o 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

9
(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.
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.

10
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.
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

11
components or sharp edges.
III. FUNCTIONS & LOCATION OF CONTROLS
zPreset of 218 programs. Curtain-drawing type of display when powered up;
zVarious kinds of picture modes and sound modes;
zScreen display of menu in English ;
zI
2C bus control with digital technology;
zTimer on/off; sleep timer off; preset timer channel;
zChildren proof lock system;
z1 Side-set AV input , 2 rear AV input, 1 rear DVD input, 1 rear S-VIDEO
terminal , 1 rear AV output;
zGame;

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Remote Controller
Remote controller functions
TV/AV exchanging button
Mute button
Numeric button
One/two/three digital buttons
Picture mode selection
Volume up/dwon button
Program play-forward button
Surround sound selection button
Volume mode selection
Display button
Game start or restart button
System preset button
Lock preset button
Scan button
DC standby button
Sleep timer
Game background selection button
Game exit button
Calendar display button
REMOTE CONTROLLER GUIDE
17
18
16
3
15
14
13
123
456
789
0
1
2
5
4
6
8
9
11
10
12
7
19
20
Program play-backward button
Intelli
g
ent button
:

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Ⅳ. DISASSEMBLY INSTRUCTIONS
A. Important note
This set is disconnected from the power supply through the converter transformer.
An isolating transformer is necessary to service operations on the primary side of the
converter transformer.
Back Cabinet Removal
Remove the screw residing on the back cabinet and carefully separate the back
cabinet from the front cabinet.
B. Picture tube handling caution
Due to high vacuum and large surface area of picture tube, great care must be
exercised when handling picture tube. Always lift picture tube by grasping it firmly
around faceplate.
NEVER LIFT TUBE BY ITS NECK! The picture tube must not be scratched or
subjected to excessive pressure as fracture of glass may result in an implosion of
considerable violence which can cause personal injury or property

14
Ⅴ . SPECIFIC INFORMATIONS
A. Principle integrated circuits
This new generation large screen color television is based on the latest 2in1
chip HAIER8829A-V1.0 developed by Toshiba and haier, integrate with other
advance ICs, high performance and simpler circuit are realized by using I2C
bus to communicate with all the other ICs.
1. Circuit composition
Core Chip CPU(the MCU): HAIER8829A-V1.0
SAWF: D38.9
Audio Processor: NNJW1136L—NZ
Audio Power Amplifier: TA8256BH
Vertical output: LA7841
AV switcher: TC90L01N
Power supply (thick-film): STR-G9656
FBT: FBT-B-19
2. IF amplifier circuit：
RF signal received from antenna, first processed by HF tuner U101 to get
38.9MHz IF signal, then amplified by V101 via R102, L102, C102, and R105
to compensate the inset loss caused by SAWF. Amplified signal enters SAWF
Z101 (D38.9) via C105 from the collector of V101 to get the 38.9MHz IF
signal with higher S/N; high gain with 6MHz bandwidth, then enters Pin 41
and 42 of HAIER8829A-V1.0. Video demodulator and amplifier are utilized
within HAIER8829A-V1.0. Video IF and AFT voltage are all controlled via I2C
bus without external alignment. RF AGC is controlled via bus as well. The
capacitor C233 at Pin 39 of HAIER8829A-V1.0 determines the time constant
of AGC, RF AGC voltage from pin 43 of HAIER8829A-V1.0 sends to tuner to
control the knee of delayed AGC by I2C bus.
3. Second sound IF recognition and video IF circuit
IF signal after video demodulation and amplification, composite video
signal will be available at pin 30 of HAIER8829A-V1.0 respectively. This signal
will go into trapping circuit consist of Z201; Z202; 203; after emitter follower
V204, to filter out the sound IF signal at 4.5; 5.5; 6.0; 6.5 MHz, the result
video signal will enter pin 1; 4; 5 of N203(TC4052BP). With the controlling

15
signal at pin 9 and pin 10 which come from N201(HAIER8829A-V1.0), the
desired video signal will be available at pin 3, and then sends to AV switcher
N802 (TC90L01N) after emitter follower V207 and V214.
The pin 31 of HAIER8829A-V1.0 output SIF signal. It will go back into the
pin 33 of HAIER8829A-V1.0 after C225. It is very good that the 4.5; 5.5; 6.0;
6.5 MHz filters which are used in second sound IF filter circuit are all
integrated into HAIER8829A-V1.0. So there’s no need to add this part of the
circuit at external.
After processed by internal limiter; discriminating and pre amplification in
HAIER8829A-V1.0, audio signal will be available at pin 38, and then sends to
AV switcher N802 (TC90L01N) after emitter follower V210.
4. Luminance and chrominance signal circuit
The luminance signal or video signal comes from pin 18 of AV switcher
N802 (TC90L01N) will be sent to pin 20 or pin 24 of HAIER8829A-V1.0 via
emitter follower V808. matrix circuit via internal clamping; trapping; smoothing;
black level extension; delay circuit. The chrominance signal comes from pin
45 enters auto system recognition and 1 H delay line circuit consist of APC
and VCO circuit via chrominance BPF and chrominance ACC circuit to get the
R-Y and B-Y after decoding, result in color difference signal which enters the
matrix circuit. TB1240N has integrated 1H delay line, the external VCO color
sub carrier oscillator is single frequency type working at 4.43MHz, will be
used for both PAL（4.43M）/NTSC（3.58M）.
5. AV Switch circuit
In this TV set, we make use of the TC90L01, which is designed by
TOSHIBA ELECTONICS for AV switch circuit. The TC90L01 is controlled by
the I2C bus. There are 3 series input ports and 2 series output ports and it
have the ALC function. The 3 series input ports are respectively used as:
inner video\audio signal, video\audio signal of AV1,video\audio signal of
AV2.The 2 series output ports are respectively used as: inner video\audio
signal and video\audio signal of AV out.
The TC90L01 is controlled by the HAIER8829A-V1.0 through the I2C bus.
Pin 13 and 14 are the input ports of the I2C bus, which control the function
of the TC90L01.According to data of the I2C bus, the TC90L01 select the
right video and audio signal from 3 series of input ports and output the
selected signal at the 2 series output ports.
The definitions of every pin of the TC90L01 are as follows:
Pin 1 and 3 are the L and R audio input ports from the pin 38 of the MCU.
Pin 2 is the inner video signal input port.
Pin 4 is the video input port of AV 1.
Pin 5 and 7 are the L and R audio input ports from the AV1 audio input.
Pin 6 is the chrominance signal input port from the S-video input.
Pin 8,9,11 is the video and audio input ports from the AV2.

16
Pin 13 and 14 are the I2C bus ports.
Pin 16 and 17 are the audio output ports to the audio processor.
Pin 18 is the video output port to the MCU.
Pin 22, 23, 24 are the video and audio output ports to the AV out.
6. Audio processing
The audio signal is select by the N802(TC90L01). The L audio signal
comes from pin 17 and through R815, R802, R646, C642, the signal goes
into pin 1 of N602(NJW1136L). The R audio signal come from pin 16 of the
N802 and through R816, R801, R647, C643, the signal goes into pin 32 of
N602. The audio signal is processed by N602. The processed audio signal
comes out of N602 at pin 8 and 26. At the XP608, audio signal can be
obtained at pin 3 and 4. There is one shield line, which transfers the audio
signal to the small audio amplifier printed circuit which is placed at the right
side of the main printed circuit uprightly. The L audio signal is received by
N601(LA4282) at pin 5.The R audio signal is received by N601(LA4282) at
pin 2. After being amplified, the L audio signal comes out of the N601 from
pin 7 and the R audio signal from pin 11. At XS602, the audio signal is
transferred to the loudhailers by one wire.
7. Horizontal sync and horizontal scan output circuits
Horizontal sync signals are separated in N201 and output from pin 13 of N201.
R211, C207, C208 connected to N201 (14) realize H-PFC function. Horizontal
pumping signals are transmitted from (13) of N201 to horizontal promotion transistor
V402 (2482), and then drive the H-DRIVE transformer T402. After being amplified it
switches power transistor V404 (2SD2539) to control the horizontal scan of the
electronic-beam. C430 is a horizontal S correction capacitor and L441(TLN2084) is
for horizontal linear inductor. T401 is a horizontal output transformer. The horizontal
return pulse output from pin 7 of T401 is transmitted to pin (27) of N201 who controls
ABCL circuits. ABCL avoid high-voltage over rated value that will cause X-ray and
affect your health.
8. Vertical sync and vertical scan output circuits
The vertical sync signals are separated from compound sync signals by sync
separating system. They are transmitted to the vertical tooth wave generator. The
external capacitor C209 (0.47uF) of pin (15) of N201 forms the vertical saw wave.
The vertical saw wave is transmitted from (16) of N201 (HAIER8829A-V1.0) to (5)
of vertical scan output IC N301 (LA7841). The external resistor R301 of N201 (16)
provides a reference current to the vertical tooth wave generator. After shaped and
amplified the vertical saw wave is output from pin (2) of N301.
Information introducing functions and testing data for LA7841 maintenance is listed

17
in Table 4. (Use a fluke 87III digital multi-meter or other digital multi-meter.)
Table 4
No. Function Working
Voltage (V)
1 GROUND 0
2 VERTICAL SCAN WAVE OUTPUT 13.66
3 POWER VCC2 25.5
4 REFERENCE 3.28
5 VERTICAL RAMP WAVE INPUT 3.28
6 POWER VCC1 25.2
7 PUMP UP OUT 2.38
9. Power circuit
The installed switching mode power source is a typical autonomous pulse switch
power source. The circuits are comprised of power hybrid IC N501 (STR-G9656),
switching mode transformer T501 (Bridge-rectifier components). When the
power switch is on, the pulse voltage of the 220V voltage rectified by VD502,
which is the same function as the Bridge-rectifier circuit, is filtered by the
capacitor C507 to obtain +300V direct current, which is added through (3)-(7) of
the switching mode transformer T501 to the drain polar of IC N501.Primary coil
1-2 provides a power supply to pin 4. The coupler N503 (HS817B/C) functions to
control voltage, and the voltage tolerance information from C561 are transmitted
to pin 5 of N501 to control the switch velocity and hold the output voltage normal.
The pulse voltage output from the secondary of the switching mode transformer
T501, rectified and filtered by diodes and capacitor to come into being a serial
direct current voltages. The main supply voltage output from pin 9 is 125~130V.
The 13V voltage output from pin 12 is regulate by V556, N504 and N505 to come
into being 9V and 5V. The voltage of VT(33V DC) comes from the main voltage
through R570.
The inner part of the STR-G9656 are as follows:
s
D
GN
D
O.C.P/F.B
1
5
O.V. P LATCH
REG.
START
VI
N
OSC
DRIVE
−
+
−
+
4
3
2
Vth2
Vth1

18
The video amplifying circuits supply voltage output from pin 10 of the T401(FBT-B-19)
is 180V~200V. After VD406 and C462, 180V is transmitted to the CRT printed circuit
board by one shield wire.
The vertical scan supply voltage for N301 output from pin 8 of T401(FBT-B-19)
is 27V.
At the left side of the main printed board, there is one small printed board, which
is the second power circuit. This circuit supplies 32V DC power for audio
amplifier N601(LA4282). From the main printed board at XP505 to the CA603 on
the left small printed board, there is one line, supplying the 300V DC power for
the small print board. The left small printed board works basically the same as
the main printed board’s power circuit, but it uses STR-G6353, not STR-G9656.
The STR-G6353 works the same as the STR-G9656. Every pin is the same
definition as the STR-G9656. Please refer to the STR-G9656.
The left small printed board provides 32V and 36V DC power. The 32V is for
N601 (LA4282), which is used to amplify L and R audio signal, and the 36 is for
N602(LA4282), which is used to amplify bass signal. In the 29F9K (Indian), we
only have N601(LA4282), the bass signal is not demand, so only 32V DC power
is necessary. If the 36V DC at RA609 is hang in the air, the voltage will rise to
more than 50 V, which will result in the damage of the STR-G6353. So, we use
one resistor (1/2W-10K) to connect the DC power and the GND.
10. E-W output circuit：
HAIER8829A-V1.0 provide E-W control signal at pin 28. Parabolic
waveform signal from pin 28 will be send to output circuit consist with V426,
V421, v423, L421.All the horizontal distortion alignment will be implement via
I2c bus.
B. Chip introduction
1. Definition of every pin of HAIER8829A-V1.0
Step Function
1 MUTE
2 LED OUTPUT
3 KEY INPUT
4 DIGITAL GND
5 CPU RESET
6 CPU CLOCK
7 CPU CLOCK
8 GND

19
9 +5 VCC
10 GND
11 SIGNAL GND
12 HORIZONTAL SYNC SIGNAL INPUT
13 HORIZONTAL PULSE SIGNAL OUTPUT
14 HORIZONTALAFC
15 VERTICAL SIGNAL PRODUCE LOCATION
16 VERTICAL PULSE SIGNAL OUTPUT
17 HORIZONTAL VCC
18 GND
19 Cb SIGNAL INPUT
20 Y SIGNAL INPUT
21 Cr SIGNAL INPUT
22 TV GND
23 COLOR SIGNAL INPUT
24 EXTERIOR VEDIO SIGNAL INPUT
25 TV VCC
26 NC
27 AUTOMATIC BRIGHT CONTROL
28 E-W SIGNAL OUTPUT
29 IF VCC
30 TV OUTPUT
31 SECOND AUDIO OUTPUT
32 EFT
33 SECOND AUDIO SIGNAL INPUT
34 DC FEEDBACK
35 PIF PLL
36 +5 VCC
37 FLITE RIPPLE
38 AUDIO SIGNAL OUTPUT
39 IF AGC
40 IF GND
41 IF INPUT
42 IF INPUT
43 RF AGC
44 Y/C VCC +5
45 SVM SWITCH CIRCUIT
46 BLACK EXTEND
47 APC FILTER
48 IK SIGNAL INPUT
49 +9V VCC
50 RED SIGNAL OUTPUT
51 GREEN SIGNAL OUTPUT
52 BLUE SIGNAL OUTPUT
53 TV SIMULATE GND
54 GND
55 +5V VCC
56 MUTE

20
57 I2C SERIAL BUS DATA LINE SDA1
58 I2C SERIAL BUS COLOCK LINE SCL1
59 SDA2
60 NC
61 SCL2
62 VIDEO SYNC SIGNAL INPUT
63 REMOTE CONTROL INPUT
64 SLEEP CONTROL
2. Definition of every pin of the LA7841
No. Function Working
Voltage (V)
1 GROUND 0
2 VERTICAL SCAN WAVE OUTPUT 13.66
3 POWER VCC2 25.5
4 REFERENCE 3.28
5 VERTICAL RAMP WAVE INPUT 3.28
6 POWER VCC1 25.2
7 PUMP UP OUT 2.38
3. Definition of every pin of the TC90L01
STEP
FUNCTION STEP FUNCTION
1 Inner audio L signal input
13 SDA
2 Inner video signal input 14 SCL
3 Inner audio R signal input 15 GND
4 AV1 video signal input 16 Inner audio R signal output
5 AV1 audio L signal input 17 Inner audio L signal output
6 S-video C signal input 18 Y signal/video output
7 AV1 audio R signal input 19 Color system select switch 1
8 AV2 video signal input 20 C signal output
9 AV2 audio L signal input 21 Color system select switch 2
10 Auto volume balance
control 22 Video signal toAVout
11 AV2 audio R signal input 23 Audio R signal to AVout
12 +Vcc(+9V) 24 Audio L signal toAVout