Orion KLX-2129TOP Schematic

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NXP TDA11106/26/56 XXX SERIES

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COLOUR TELEVISION

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CONTENTS

1. safety precautions………………………………………………………………………………………....3

2. block diagram …………………………………………………………………………………………....4

3． Replacement of memory IC……………………………………………………………………………..6

4． Service adjustment…………………………………………………………………………………….....6

5． ICs functional description…………………………………………………………………………........15

6． Test point waveform………………………………………………………………………………….…..18

7． All ICs/transistors voltages…………………………………………………………………………….19

8． Purity / convergence adjustment……………………………………………………………………..21

9． KLX-2129TOP VER1.0 circuit diagram ………………………………………………………………22

10． KLX-2129TOP VER1.0 PCB ………………………………………………………………………….. 23

11． KLX-2129TOP-21.BOM………………………………………………………………………………….. 24

2

SAFETY PRECAUTIONS

1. The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the
original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to those
used in the original circuits. Service should be performed by
qualified personnel only.

2. Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer’s warranty and will further relieve the
manufacturer of responsibility for personal injury or property
damage resulting therefrom.

3. Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics
are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by
using replacement components rated for higher voltage,
wattage, etc. Replacement parts which have these special
safety characteristics are identified in the parts list of
Service manual. Electrical components having such

features are identified by shading on the schematics
and by ( ！ ) on the parts list in Service manual. The use

of a substitute replacement which does not have the same
safety characteristics as the recommended replacement
part shown in the parts list of Service manual may cause
shock, fire, or other hazards

4. Don’t short between the LIVE side ground and

ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing. Some model’s power circuit is

partly different in the GND. The difference of the GND is
shown by the LIVE: ( ) side GND, ISOLATED (NEUTRAL) :
( ) side GND and EARTH : ( ) side GND. Don’t short
between the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND and never measure with a
measuring apparatus (oscilloscope etc.) the LIVE side GND
and ISOLATED (NEUTRAL) side GND or EARTH side GND
at the same time. If above note will not be kept, a fuse or
any parts will be broken.

5. If any repair has been made to the chassis, it is
recommended that the B1 setting should be checked or
adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).

6. The high voltage applied to the picture tube must conform
with that specified in Service manual. Excessive high
voltage can cause an increase in X-Ray emission, arcing
and possible component damage, therefore operation under
excessive high voltage conditions should be kept to a
minimum, or should be prevented. If severe arcing occurs,
remove the AC power immediately and determine the cause
by visual inspection (incorrect installation, cracked or melted
high voltage harness, poor soldering, etc.). To maintain the
proper minimum level of soft X-Ray emission, components
in the high voltage circuitry including the picture tube must
be the exact replacements or alternatives approved by the
manufacturer of the complete product.

7. Do not check high voltage by drawing an arc. Use a high
voltage meter or a high voltage probe with a VTVM.
Discharge the picture tube before attempting meter
connection, by connecting a clip lead to the ground frame
and connecting the other end of the lead through a 10kΩ
2W resitor to the anode button.

8. When service is required, observe the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those components that indicate evidence of
overheating should be replaced. Always use the

9. manufacturer’s replacement components.

.

10. Isolation Check

(Safety for Electrical Shock Hazard)

After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control
knobs, metal cabinet, screwheads, earphone jack, control
shafts, etc.) to be sure the product is safe to operate without
danger of electrical shock.

11. The surface of the TV screen is coated with a thin film which
can easily be damaged. Be very careful with it when handle
the TV. Should the TV screen become soiled, wipe it with a
soft dry cloth. Never rub it forcefully. Never use any cleaner
or detergent on it.

(1) Dielectric Strength Test

The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second.
(…Withstand a voltage of 1100V AC (r.m.s.) to an appliance
rated up to 120V, and 3000V AC (r.m.s.) to an appliance
rated 200V or more, for a periode of one second.)
This method of test requires a test equipment not generally
found in the service trade.

(2) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
“Leakage Current Tester”, measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).

●Alternate Check Method

Plug the AC line cord directly into the AC outlet ( do not use
a line isolation transformer during this check.). Use an AC
voltmeter having 1000 ohms per volt or more sensitivity in
the following manner. Connect a 1500Ω 10W resistor

paralleled by a 0.15μF AC-type capacitor between an
exposed metal part and a known good earth ground (water
pipe, etc.). Measure the AC voltage across the resistor with
the AC voltmeter. Move the resistor connection to each
exposed metal part, particularly any exposed metal part
having a return path to the chassis, and measure the AC
voltage across the resistor. Now, reverse the plug in the AC
outlet and repeat each measurement. Any voltage
measured must not exceed 0.75V AC (r.m.s.). This
corresponds to 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.).
This corresponds to 0.2mA AC (r.m.s.)

3

TV Block diagram

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TUNER

POWER

UNIT

SAW

video

24C08

bus

130

+13

-13

3.3

TDA11106/26/56-XXXX

IF IN R IN

RF AGC GIN

B IN

CHROMA
VIDEO
CVBS/Y IN

CVBS1 IN
CVBS2 IN

SDA
SCL MA IN L
MAOUTR MA IN R
MAOUTL
RGB OUT
V OUT H OUT

V IN

STV8172A

V OUT

D

H IN

H OUT

H OUT

200

CRT PCB

SCREE

FOCU

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audio

8

video

Video IN

CRT

audio

405

video

audio

video

TDA7266

Vi1

OUT1-

OUT1+

Vi2

OUT2-

OUT2+

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Ri 2
Li 2

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Li2

Li1

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5

REPLACEMENT OF MEMORY IC

1. MEMORY IC.

This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and
deflection circuits.
When replacing memory IC, be sure to use IC written with the initial value of data.

2. PROCEDURE FOR REPLACING MEMORY IC
(1) Power off

Switch the power off and unplug the power cord from AC outlet.

(2) Replace IC

Be sure to use memory IC written with the initial data values.

(3) Power On

Plug the power cord into the AC outlet and switch the power On.

(4) Check and set SYSTEM default value:

3. Note: enter a factory mode method

1) Factory remote control: Press the factory remote control [TEST] key, appear on the television
screen 'FACTORY'.

2) Customer remote control

3) Press [menu] key, appear the picture menu, press few character keys 6483, the screen appears
'FACTORY'. press few character keys 6483 again, the screen appears ' B.W BALANCE '.

4) Press [menu] key, The “ADJUST” will be displayed on the screen.

5) Press [menu] key, withdraw factory mode.

6) Check the setting value of the SYSTEM default value of Table below. If the value is different,
select items by [CH+]/[CH-] keys and set value by [VOL+]/[VOL-] keys.

7) Press “menu” key again and return to the normal screen.

SERVICE ADJUSTMENT

B1 POWER SUPPLY

1. Receive normal colour bar signal.

2. Connect DC voltmeter to VD551- and isolated ground.

3. Adjust potentiometer in power unit to get the voltage as 110V ±1.0V for 21 inch hereinafter,
130 ±1.0V for 25 inch upwards.

FOCUS ADJUSTMENT

1. Receive a crosshatch signal.

2. While watching the screen, adjust the FOCUS VR to make the vertical and horizontal lines as fine and
sharp as possible.

BUS CONTROL ADJUSTMENT

To enter BUS control mode, Press “TEST” key on the Remote control unit of factory. （Customer remote
control press "MENU" key behind in a row press"6""4""8""3"）
Choose a "SETUP SELECT" options in"P5" menu, setup the item of " ENG.PAGE " to "1”, press "MUTE" key
again can depend on this get into "P5"~"P15" and "PP1. PP2. LANG. LANGX" of design menu, general

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factory the production doesn't need to carry on "P5"~"P15" and "PP1. PP2. LANG. LANGX" .
At “FACTORY”under the appearance press “Q.V “ the key can get into “BUS OPEN” appearance, at “BUS
OPEN under, press “Q.V “ the key recover factory appearance.

Remote Hand Unit keys

[M1] [M2] [M3]

[P0] menu

P0 Geometrical adjustment
Receive PAL standard Complete pattern signal.

Receive NTSC signal and repeat above [P0] adjustment.
[P1] Menu

CRTcut off and white balance adjustment.
Receive white signal.

[P2] Menu

AGC Adjustment.

c d e

f g h

Horizontal line

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[M0]

b

Adjustment steps：
a) Adjust V.LIN, to the center horizontal line just appeare from half bottom shadow.
b) Adjust V. SIZE, to get 90% of vertical picture contents would be displayed on CRT.
c) Adjust V.POS, the center horizontal line correspond to CRT vertical center.
d) Adjust H.PHASE, to get the picture horizontal center correspond to CRT horizontal center.

a) CRT cut off adjustment.

1. At [P1] Menu, press “-/-- “ the key, then automatically vertical scan will be stopped.

2. Adjust SCREEN control on Flyback transformer to get the darkest single horizontal line (red,
green, or blue, sometimes shows more yellow, more purple or more white).

b) White balance adjustment.

1. Select RD/BD menu.

2. Adjust RD/BD to get colour temperature as x=281, y=311

Receive 60dBμ(1mV)V
reduce gradually and just disappeared point.

Select “shipping”, push [V+] [V-]key to be shipped.

colour bar pattern signal，adjust AGC value（voltage from high to low），to noise

H

Shado

a

7

I2C standard UOC for export bus control adjustment item default setting 2009-09-09

Items Variable Preset recommendation

PO

F50 or F60 display

H.PHASE 0~63 Horizontal shift adjusting 42
V.LIN 0~63 Picture vertical center adjustment 31
V.SIZE 0~63 Vertical amplitude adjustment 40
V.POS 0~63 Vertical positions adjustment 41
V.SC 0~63 Vertical correct adjusting 30
OSD HP 0~63 OSD position setting of horizontal 43
OSD VP 0~63 OSD position setting of vertical 38
OSD CON 0~15 OSD brightness setting 15
V.L.X 0~2 Vertical linearity control setting 0
V.L 0~63 Vertical linearity adjustment 32
V.ZOOM 0~63 Vertical zoom adjustment 32
HP 0~63 Paralleloqram adjustment 32
EWW 0~63 Horizontal range adjusting 32
HB 0~63 Bow adjusting 32
PW 0~63 East-west curve adjusting 32
TC 0~63 Trapezoid adjusting 32
UCP 0~63 Up conner adjusting 32
LCP 0~63 Low conner adjusting 32

P1

R.B 0~63 R OUT Amplitude Adjustment 32
G.B 0~63 G OUT Amplitude Adjustment 32
B.B 0~63 B OUT Amplitude Adjustment 32
R.D 0~63 R OUT Amplitude Adjustment 32
G.D 0~63 G OUT Amplitude Adjustment 32
B.D 0~63 B OUT Amplitude Adjustment 32
LINE BRI 0~63 Brightness of screen line 20

COF 0~1

Cut-off control range 0:normal control range
1:extended control range

BLOC 0-15 Black level offset course 8
CL 0-15 Contrast level offset 12

P2

H. BLK.DEP 0-1 Horizontal blank option 0
H.BLK.L 0~15 Horizontal left blank adjust 5
H.BLK.R 0~15 Horizontal right blank adjust 8
RF. AGC 0~63 Tuner AGC Takeover Point Adjustment 32
AGCS 0~3 AGC speed setting 1

50Hz 60Hz

0

8

P3

CON MAX 20~63 Contrast maximum value Setting 50
CON CEN 10~50 Contrast center value Setting 35
CON MIN 0~40 Contrast minimum value Setting 0
BRI MAX 20~63 Brightness maximum value Setting 50
BRI CEN 10~50 Brightness center value Setting 25
BRI MIN 0~40 Brightness minimum value Setting 0
SHARP MAX 32~63 Sharpness maximum value Setting 63
SHARP MIN 0~31 Sharpness minimum value Setting 0
SUB COL 0~63 Sub colour value Setting 28
SUB TINT 0~32 Sub tint value Setting 16

P4

PWL 0~1

Peak white limiting 0:peak white limiting circuit
not active 1:peak white limiting circuit active

1

PWL ADJ 0~15 Peak white adjust 4
SOFTCLIPLV 0~3 Soft clip adjust 1
BLK SW 0~1 Baack stretch 1
BLK DEP 0~1 Black stretch Depth 0:15IRE 1:30 IRE 1
AUTO BLK 0~3 Black area to switch off the black stretch 1
GAMMA 0~1 GAMMA Control 0
AFTER(-)SH 0~2 Ratio pre-and aftershoot 1
OVER(-)SH 0~3 Ratio of positive and negative peaks 1
BPD 0~1 0~1 0

P5

VLF-VHF FS 0~255

VHF-UHF FS 0~255

FS Tuner frequency setting of VLF-VHF
0~255(100.0~227.5 MHz)
FS Tuner frequency setting of VHF-UHF
0~255{300.5~555.5MHz}

87

127

U-BAND-ALTFS 0~1 FS Tuner register setting of UHF BAND 0
BAND-SEL VS 0~2 VS Tuner BAND Control setting 2
VOL10 0~100 V.P10 volume of VALUE 10
VOL25 0~100 V.P25 volume of VALUE 25
VOL50 0~100 V.P50 volume of VALUE 50
VOL100 0~100 V.P75 volume of VALUE 100
LSR VOL 0~63 MAX volume 63
ENG.PAGE 0~1 Engineer menu switch 0

P6

AKB 0~1 Black current stabilization 1
CMB P7 0~2 Pin 7 function setting 0: AVL, 1:SIF output, 2:FM

2

output

SSL 0~1

Slicing level for horizontal sync separator 0:50%
1:30%,direction top sync

0

FSL 0~1 Forced slicing leve l for vertical sync 0

9

AGN 0~1 Gain FM demodulator 0:normal operation 1:gain

+6 dB

AGNE 0~3 FM sound demodulator outopt signal amplitude 1
FMWS 0~3 Window select for FM demodulator 2
FMWS INS 0~3 Window select for FM demodulator when search 0
CORING 0~1 CORING control switch 1
E2PROM CLR 0~1 E2PROM resete 0

P7

PFp4 0~3 PAL Center frequency with postpone adjust 2
PFnm 0~3 NTSC 3.58 Center frequency with postpone

adjust

PFn4 0~3 NTSC 4.43 Center frequency with postpone

adjust

PFav 0~3 AV Center frequency with postpone adjust 2
Yn 0~15 Y-delay adjustment for PAL signal 9
Yp 0~15 Y-delay adjustment for NTSC signal 12
Yav 0~15 Y-delay adjustment for PAL signal in AV mode 12
Ysvhs 0~15 Y-delay adjustment for PAL signal in S-video

mode

P8

IF

(MONO90)

0~3

Other 0~6

Vision IF of RF
(MONO90)

0: 38.00MHz (CHINA)
1: 45.75MHz
2: 38.90MHz (EUROPE&INDIA)
3: 33.90MHz

(AV90/AV110/MONO110)

(MONO90)

Other
0: 58.75MHz
1: 45.75MHz
2: 38.90MHz (EUROPE&INDIA)
3: 38.00MHz
4: 33.40MHz

5. RESRVE (reserve)
6: 33.9MHz

DCXO 0~3 Crystal load electric capacity compensate 1

OIF

MONO90

0~15

Other 0~63

IF compensate

(MONO90)

Other 32

FFI 0~1 Fast filter IF -PLL 1

FS CP 0~1 FS Tuner CP Bit setting 0
AVL-MAX 0~1 Sound maximum gain Then the AVL ON 1
AVL 0~1 AVL function selection 1:on 0
AVL OPT 0~1 AVL function switch in the consumer menu 0

1

1

2

11

2

2

8

10

P9

SND PREFER 0~3 Force sound system as auto search 0
DK OPT 0~1 Sound system of 6.0M selection 1
I OPT 0~1 Sound system of 5.5M selection 1
M OPT 0~1 Sound system of 4.5M selection 1
BG OPT 0~1 Sound system of 6.5M selection 1
AUTO SOUND 0~1 Auto sound system as auto search 1
FULL SCART 0~1 FULL SCART function setting 0: brief 1:full 0
SCART OPT 0~1 SCART function selection 1
AV-S OPT 0~1 S-VIDEO function selection 1
AV2 OPT 0~1 AV2 unction selection 1
YUV OPT 0~1 YUV function selection 1
DVD 0~2 DVD function selection 0
DVD SRC 0~2 DVD SRC selection 0
TV LOGIC 0~3 TV LOGIC setting 0
AV1 LOGIC 0~3 AV1 LOGIC setting 2
AV-S LOGIC 0~3 AV-S LOGIC setting 3
AV2 LOGIC 0~3 AV2 LOGIC setting 1
YUV LOGIC 0~3 YUV LOGIC setting 0
DVD LOGIC 0~3 DVD LOGIC setting 0

P10

LOGO 0~1 LOGO selection 0
WELCOME TIM LOGO display time adjustment
SAVER 0~1 Screen saver function selection 0
PROG L-R 0~1 Channel number position selection 0
FM OPT 0~1 FM RADIO function selection 0
FM SIGNAL 0~3 FM RADIO signal selection as auto search 2
SCAN OPT 0~1 Program auto scan selection 1
CHASSIS OPT 0~1 CHASSIS selection 1

P11

PWR-OPT 0~1 AC power on start selection 1
ZOOM OPT 0~3 ZOOM function selection 0
ZOOM V+ 0~63 Vertical range setting of zoom mode 12
WIDE V- 0~63 Vertical range setting of wide screen mode 20
16:9/4:3 ADC 80~200 Pin8 Voltage setting for SCARTmode identify 110
POWER TIME 0~12 On delay time 8
BLANK V.SEZE 0~15 Vertical size adjusting on the ON delay time 8
FRAME-COL 0~5 Menu frame colour selection 3
SUBMENU-COL 0~5 Menu background colour selection 2
BB BRIGHT 0~63 Blue background Brightness value Setting 31

P12

MONO-OPT 0~1 MONO or stereo function selection 1

11

CVBS OUT 0~1 VIDEO output setting 0:IF,1:CVBS 1
CH-MUTE CNT 2~15 No signal change channel mute time Setting 5
WEAK SIGNAL 0~1 WEAK signal Setting 0
B.BACK 0~2 Background selection 0:no,1:blue,2:black 0
BLANK MUTE 0~1 Change the TV channel MUTE selection 1
AV CNT 0~15 Change the AV channel MUTE selection 2
PLUG&PLAY 0~1 Power on auto search selection 1
STB CNT 0~255 Off delay time 0
CHG MUTE PIN 0~1 Change the TV channel MUTE time Setting 1
RESET TIME 0~15 Reset time selection 2
V.GUARD 0~15 V.GUARD function selection 0
N3 OPT 0~1 N3 selection 1

P13

XDT 0~1 x-ray detection on/off 0
P.OFF.SET 0~1 Power off setting 0
SCR BLN 0~1 SCR BLN setting 0
CBS 0~1 Control sequence of beam current limiting

0:normal operation(contrast—brightness)
1:control on contrast and brightness in parallel

MUS 0~1 Colour decode matrix setting 0: Japan1:USA 1
MTXF 0~1 Colour matrix selection 0: standard 1: force 0
FCO 0~1 Forced Color-on 0:on 1:off 0
CB 0~1 Chroma bandpass center frequency 0
BPB2 0~1 Bypass sound bandpass filter section 2

0:bandpass filter active 1:bandpass filter
bypassed

GROUP DL 0~1 Group delay on CVBSI signal 0:no group delay

correction 1: group delay correction switched on

DSG 0~1 Extra gain selection loudspeaker outputs 0:+0

dB 1:+6 dB

P14

COLD RD- 0~31 Cool color temperature adjusting of red 10

COLD BD+ 0~31 Cool color temperature adjusting of green 10
YUV R.B -32~+32 YUV R OUT Amplitude Adjustment 0
YUV G.B -32~+32 YUV G OUT Amplitude Adjustment 0
YUV B.B -32~+32 YUV B OUT Amplitude Adjustment 0
YUV H.PHASE -32~+32 YUV Horizontal shift adjusting 0
WARM RD+ 0~31 Warm color temperature adjusting of red 10
WARM BD- 0~31 Warm color temperature adjusting of green 10

PP1

BRI.STD 0~100 Standard Brightness in pp mode 50

CON.STD 0~100 Standard Contrast in pp mode 50
COL.STD 0~100 Standard Color in pp mode 50

0

1

1

0

12

SHARP.STD 0~100 StandardSharpness in pp mode 50
BRI.DYNAM 0~100 Dynamic Brightness in pp mode 45
CON. DYNAM 0~100 Dynamic Contrast in pp mode 65
COL. DYNAM 0~100 Dynamic Color in pp mode 55
SHA. DYNAM 0~100 DynamicSharpness in pp mode 60

PP2

BRI.MILD 0~100 Mild Brightness in pp mode 32
CON. MILD 0~100 Mild Contrast in pp mode 40
COL. MILD 0~100 Mild Color in pp mode 35
SHARP. MILD 0~100 MildSharpness in pp mode 40

LANG

FRENCH 0~1 OSD language selection 1
RUSSIN 0~1 OSD language selection 1
TURKISH 0~1 OSD language selection 1
BLUGARIAN 0~1 OSD language selection 1
RUMANIAN 0~1 OSD language selection 1
SPANISH 0~1 OSD language selection 1
PORTUGUESS 0~1 OSD language selection 1
ITALIAN 0~1 OSD language selection 1
GERMAN 0~1 OSD language selection 1

LANGX

SLOVENE 0~1 OSD language selection 1
CROATIAN 0~1 OSD language selection 1
MACEDONIAN 0~1 OSD language selection 1
SERBIAN 0~1 OSD language selection 1
GREEK 0~1 OSD language selection 1
FARSI 0~1 OSD language selection 1
ARABIC 0~1 OSD language selection 1

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