Akira CT-25CF9N Schematic

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F

P

P

P

6

6

6

9

9

0

0

N

N

0

Model No: CT-25CF9N
Version 1.0

3

CONTENT

SAFETY NOTICE ................................................................................................................................... 4

TECHNICAL SPECIFICATION............................................................................................................. 5

GENERAL SPECIFICATION................................................................................................................. 6

CHASSIS BLOCK DIAGRAM ............................................................................................................... 7

CHASSIS WIRING DIAGRAM............................................................................................................ 17

PBC BOARD ......................................................................................................................................... 18

SERVICE ADJUSTMENT .................................................................................................................... 21

MECHANICAL DISASSEMBLY......................................................................................................... 30

SCHEMATIC DIAGRAM..................................................................................................................... 32

THROUBLE SHOOTING CHART....................................................................................................... 34

Model No: CT-25CF9N
Version 1.0

4

SAFETY NOTICE

SAFETY PRECAUTIONS

1. An isolation transformer should be connected in the power line between the receiver and the AC
line when a service is performed on the primary of the converter transformer of the set.

2. Comply with all caution and safety-related notes provided on the cabinet back, inside the cabinet,
on the chassis or the picture tube.

3. When replacing a chassis in the cabinet, always be certain that all the protective devices are
installed properly, such as control knobs, adjustment covers or shields, barriers, isolation resistor­capacitor network etc. Before returning any television to the customer, the service technician must
be sure that it is completely safe to operate without danger of electrical shock.

X-RADIATION PRECAUTION

The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is
specially constructed to limit X-RADIATION emissions. For continued X_RADIATION protection,
the replacement tube must be the same type as the original including suffix letter. Excessive high
voltage may produce potentially hazardous X-RADIATION. To avoid such hazards, the high voltage
must be maintained within specified limit. Refer to this service manual, high voltage must be
maintained within the specified limits.

PRODUCT SAFETY NOTICE

Product safety should be considered when a component replacement made in any area of a receiver.
Components indicated by mark ! in the parts list and the schematic diagram designate components in
which safety can be of special significance. It is particularly recommended that only parts designed on
the parts list in this manual be used for component replacement designated by mark !. No deviations
from resistance wattage or voltage ratings may be made for replacement items designated by mark !.

Model No: CT-25CF9N
Version 1.0

TECHNICAL SPECIFICATION

FEATURES

• Hyper-Band Tuner

• 100-Channel Memories

• NTSC Playback

• Front or Side AV Input

• Rear AV Input/Output

• S-Video Input

• On-Screen display

• Sleep Timer

• Auto Search/Store/Shut-off

• Full Function Remote Control

• 8W x 2 Speakers

• 772 (W) x 595 (D) x 856 (H) mm

• Weight: 78Kg

• Options

o DVD-Component Input
o Fastext
o MTS
o NICAM/German Stereo
o Wide Power Supply

Model No: CT-25CF9N
Version 1.0

5

GENERAL SPECIFICATION

POWER CONSUMPTION 150W MAX
STANDBY POWER CONSUMPTION 5W
RECEIVER SYSTEM D/K; I; B/G; M
COLOUR SYSTEM PAL/ SECAM / NTSC
VISION INTERMEDIATE FREQUENCY 38.9MHz
INTER-CARRIER FREQUENCY

CHROMA IF FREQUENCY PAL/NTSC 34.47 / 35.32 MHz
ANTENNA TYPE DIN TYPE 75 OHM
CHANNELS RECEIVING

TUNING SYSTEM VS TUNING
AV IN/OUT

AV IN/OUT SPECIFICATION

OSD LANGUAGE ENGLISH, RUSSIAN, IRANIAN, ARABIC,

TELETEXT LANGUAGE PAN-EUROPEAN, CYRILLIC 2, IRANIAN,

AUDIO OUTPUT POWER >5W (1KHz, 0.5v INPUT, 10% THD)
SAFETY AUTHENTICATION STANDARD CB/ CE
LED INDICATOR POWER ON
HAND SET TYPE HS08 HS09
HAND SET POWER SUPPLY BATTERY 3V UM-3/R6/AA x2
COLOUR PICTURE TUBE 25” – 38” 110 DEGREE TUBE
REMOTE CONTROL DISTANCE 5m

4.5 MHz (M)

5.5 MHz (B/G)

6.0 MHz (I)

6.5 MHz (D/K)

5.85 MHz (NICAM B/G, D/K)

6.55 MHz (NICAM I)

5.74 MHz (GERMAN STEREO)

VHF-1 A-0; E2-E4; S1-S9 CH 44.25-161.25 MHz
VHF-2 S10-S41; E5-E12 CH 168.25-163.25MHz
UHF E21-E69 CH 471.25-863.25 MHz

1 AV IN+1 AV OUT; 1 FRONT AV INPUT
1 S-VIDEO IN, 1 YUV IN (OPTION);
21 PIN SCART (OPTION)
Y/C IN-----y 1.0 0.2V
VIDEO IN ----1.0 0.2V
AUDIO IN ---- 0.2V (r.m.s)
VIDEO OUT ---- 1.0 0.2V
AUDIO OUT ----0.2V (r.m.s)
RGB IN: -----0.7V
YUV ---- Y 1.0V

ITALIAN, TURKIC, GERMAN, FRANCE

ARABIC

p-p

; U 0.7V

p-p

p-p

75 ohm c: 0.7V

75ohm

p-p

75ohm

p-p

; V 0.7V

p-p

p-p

p-p

75 ohm

6

Model No: CT-25CF9N
Version 1.0

CHASSIS BLOCK DIAGRAM

Model No: CT-25CF9N

Version 1.0

7

IC 401 (UNIVERSAL HI-FI AUDIO PROCESSOR) TDA9859H

IC605. IC606 <REGULATORS> L7800 SERIES

Model No: CT-25CF9N

Version 1.0

INPUT

1

REFERENCE
VOLTAGE

STARTING
CIRCUIT

CURRENT
GENERATOR

REFERENCE
VOLTAGE

ERROR
AMPLIFIER

SOA
PROTECTION

THERRMAL
PROTECTION

SERIES
PASS
ELEMENT

OUTPUT

GND

2

3

8

IC 402 (SRS TRUBASS) NJM2192 AM

9

Model No: CT-25CF9N

Version 1.0

IC 401 (AV SWITCH W/IIC BUS CONTROL) M52797SP

10

Model No: CT-25CF9N

Version 1.0

IC 101 (SYSTEM TV SIGNAL PROCESSOR-TELETEXT)
TDA93XXPS/N2/5I

Model No: CT-25CF9N

Version 1.0

11

IC 103 (DIGITAL TV SOUND DEMODULATOR / DECODER)
TDA9874AH

Model No: CT-25CF9N

Version 1.0

12

IC 302 (VERTICAL DEFLECTION BOOSTER) (TDA4863AJ)

IC 404(BTL AUDIO AMPLIFIER)(TDA8944J)

Model No: CT-25CF9N

Version 1.0

13

IC 803(MULTISTANDARD COMB FILTE) (TDA9181T)

IC 802(HEF4052)

Model No: CT-25CF9N

Version 1.0

14

IC 601 <PHOTO TRANSISTOR> TLP621

1

2

1:ANODE
2:CATHODE
3:EMITTER
4:COLLECTOT

IC 604 <POWER SWITCH> KA5Q12XXRF

Model No: CT-25CF9N

Version 1.0

TLP621

4

3

15

Transistor Mark

E

PNP

A96

6

C

PNP

A10

1
5

E

C

PNP

A10

1
3

B

B

E

C

PNP

B
7
7
4

B

E

C

NPN

C22

3
0

E

B

C

NPN

B
4
2

0

B

E

C

NPN

C

2
482

E

B

B

C

PNP

E

NPN

C270

3

E

C
2
1
2

0

B

C

B

C

NPN

B

PNP

E

C

C
2
2
1

6

E

B
4
2
1

B

NPN

E

C

C
1
8
1

5

B

NPN

C
2
7
1

7

B

E

C

C

Vout SENSE

P5NK50Z

G

D

S

Se140

COLLECTOR

GROUND

B

INPUT

C5148

C

L7809

GND

E

OUTPUT

INPUT

S3904

B E

GND

L7812

GND

C

OUTPUT

OUTPUT

INPUT

L7805

OUTPUT

GND

-14-

CHASSIS WIRING DIAGRAM

TO FRONT VIDEO IN

TO FRONT AUDIO IN

CN 806
TO CN 705

CN 803
TO CN 704

CN 802
CN 701

CN 801A
TO CN 703

CN 301

CN 805
TO CN 706

CN 202

CN 203

TO KEYBOARD

TO H501

H501
FROM CN 203

CN 602

17

CN 703
FROM CN801A

CN 701
FROM CN802A

CN401B

CN 601

CN 706
FROM Cn805
+H403

FOCUS

SCREEN

H502
FROM CN 302

CN401A

Model No: CT-25CF9N

Version 1.0

PBC BOARD

Model No: CT-25CF9N

Version 1.0

18

CAM350 PRO V 6.0 : Wed Jan 15 10:17:54 2003 - (Untitled)

19

Model No: CT-25CF9N

Version 1.0

SIDE FRONT AV & AV PCB TOP LAYER

CONTROL PCB TOP LAYER

Model No: CT-25CF9N

Version 1.0

5800-D25TMY-01

20

SERVICE ADJUSTMENT

1. Please notice the following before debug and equipment
a. The main power is 90~260V/50/60Hz. Please be careful when you debug and equip.
b. Don’t short any two soldering points, which should not be shorted and don’t touch

any component, which should not be touched.
c. Pls pull out plug before equipment.
d. For safety reasons, all components equipped or replaced should be identical with

BOM.
e. Must be warm up for 30 minutes or more and degauss CRT thoroughly with

demagnetizer before alignment.
f. The data of EEPROM must be stored before the adjustment for main chassis.

2. Tools and equipments for adjustment
a. Small “-” screwdriver.
b. Screwdriver without inductance.
c. Pattern Generator.
d. DC regulator power supply.
e. Digital Voltmeter.
f. Sweep signal generator.
g. 20MHz 2-channel Oscilloscope.
h. Signal condition

ITEMS LOGO PICTURE

1 CHN-

2 USA-

3 WE-6CH 182.25MHz RED FIELD PAL--BG L: R:

4 CH12 205.25MHz CROSS HATCH NTSC/M 1KHz
5 CHN-

6 224.25 PHILIPHS

7 WE-

8 CHN-

9 489.25 MONOSCOPE NTSC 1KHZ
10 751.25 MOMOSCOPE PAL--I A: BTSC

3. Power adjustment

Connect a 100W bulb cross C616. Then connect AC 220V power to CN601. If the bulb light,
the voltage is prescriptive, and there is no unconventionality, then the power is OK, else be
repaired.

Model No: CT-25CF9N
Version 1.0

CARRIER

49.75 PHILIPHS

1CH

61.25 COLOR BAR NTSC--M 1KHz

3CH

216.25 GREY/COLOR

12CH

294.25 HALF COLOR

S20CH

471.25 CROSS HATCH PAL--D/K 1KHZ

13CH

PATTERN SYSTEM SOUND

PICTURE

BAR

PICTURE

BAR

REMARK

MODE

PAL--I 1KHz

A2 STEREO

400HZ

SECEM -­D/K
PAL--BG A: BTSC

PAL--BG A: 400HZ

BTSC

B: MUSIC
C: 1KHZ

B: 1KHZ

B: MUSIC
C: 1KHZ

/TELETEXT

B/G NICAM

STEREO

I NICAM

21

4. Complete machine general adjustment.
a. Go to factory mode before warm up line.
Method: Press key CLOCK, P.M., , TV SET will go to factory mode. Press key 0-9
to entering factory menu. Select the item by “PROG+” and “PROG-“ keys. Adjust by
“VOL+” and “VOL-” Keys. Press “ + ” key to exit factory mode.

b. Focus adjustment.

i. Receive monoscope pattern.

ii. Set TV to work in dynamic status.

iii. Adjust the focus knob of FBT to get the clearest picture.

c. Screen Voltage Adjustment (KEY 0)

i. Set TV at “TV” “STANDARD” mode, no signal input.

ii. Press key CLOCK, P.M. in turn to entering factory mode.
iii. Press 0 key.
iv. Adjust the screen knob of FBT to get a horizontal faintness beam line.

v. Press other keys to go to the normal work status.

d. Vertical size and pin cushion adjustment (KEY 2)

i. Receive 50HZ cross hatch pattern. Set TV standard status, adjust 5VSL to

obtain half of the cross hatch, adjust 5SCL to obtain picture’s vertical pin
cushion a good status, adjust 5VSH to obtain picture’s vertical center at the
center of CRT screen in factory mode.

ii. Receive 50HZ monoscope pattern. Set TV standard status,. Adjust 5VAM to

obtain picture’s vertical redisplay ratio more than 90% in factory mode.

Vertical slope 50Hz 5VSL
Vertical amplitude 50Hz 5VAM
S-correction 50Hz 5SCL
Vertical shift 50Hz 5VSH

iii. Receive 60HZ cross hatch pattern. Set TV standard status. Adjust 6VSL to

obtain half of the cross hatch, adjust 6SCL to obtain picture’s vertical pin
cushion a good status. Adjust 6VSH to obtain picture’s vertical center at the
center of CRT screen in factory mode.

iv. Receive 60HZ monoscope pattern. Set TV standard status. Adjust 6VAM to

obtain picture’s vertical redisplay ratio more than 90% in factory mode.

Vertical slop 60Hz 6VSL
Vertical amplitude 60Hz 6VAM
S-correction 60Hz 6SCL
Vertical shift 60Hz 6VSH

v. If necessary, adjust Horizontal Center and EW again.
vi. Receive 50HZ RGB or YUV cross hatch pattern. Set TV standard status.

Adjust 5RGH to obtain picture’s vertical center at the center of CRT screen
in factory mode. (OPTION).

vii. Receive 60HZ RGB or YUV cross hatch pattern. Set TV standard status.

Adjust 6RGH to obtain picture’s vertical center at the center of CRT screen
in factory. (OPTION).

22

Model No: CT-25CF9N
Version 1.0

e. Horizontal Center and EW adjustment (KEY 1)

i. Received 50HZ monoscope PATTERN. Set TV standard status. Adjust

5HSH to obtain horizontal center at the center of CRT screen.

ii. Receive 50HZ cross hatch pattern. Set TV standard status. Adjust 5EWW,

5PWW, 5UCR, 5LCR, 5PAR, 5BOW, 5EWT to obtain picture’s Horizontal
redisplay ratio more than 90% in factory mode.

Horizontal parallelogram 50Hz 5PAR
Horizontal bow 50Hz 5BOW
Horizontal shift 50Hz 5HSH
EW width 50Hz 5EWW
EW parabola /width 50Hz 5EWP
EW upper corner parabola 50Hz 5UCR
EW lower corner parabola 50Hz 5LCR
EW trapezium 50Hz 5EWT

iii. Receive 60HZ monoscope PATTERN. Set TV standard status. Adjust

6HSH to obtain horizontal center at the center of CRT screen.

iv. Receive 60HZ cross hatch pattern. Set TV standard status. Adjust 6EWW,

6PWW, 6URC, 6LCR, 6BOW, 6EWT to obtain picture’s Horizontal
redisplay ratio more than 90% in factory mode.

Horizontal parallelogram 60Hz 6PAR
Horizontal bow 60Hz 6BOW
Horizontal shift 60Hz 6HSH
EW width 60Hz 6EWW
EW parabola/ width 60Hz 6EWP
EW upper corner parabola 60Hz 6UCR
EW lower corner parabola 60Hz 6LCR
EW trapezium 60Hz 6EWT

f. OSD position adjustment.

i. Menu OSD position adjustment. Received 50/60Hz cross hatch pattern. Set

TV standard status. Press KEY 2 in factory mode, adjust 5VOF /6VOF and
HOF item, to obtain menu OSD at the center of CRT screen.

ii. LOGO position adjustment. Receive 50/60Hz cross hatch pattern. Set TV

standard status. Press KEY 7 in factory mode, adjust XMIN, XMAX,
YMIN, and YMAX item, to obtain LAGO at the center up to 1/3 of CRT
screen.

iii. TELETEXT OSD position adjust. Received 50/60HZ TELETEXT signal.

Set TV standard status. Press KEY 7 in factory in factory mode, adjust
TXMI and 5TYM/6TYM item, to obtain INDEX at the center of CRT
screen.

g. White Balance adjust (Applied in factory) (KEY 3)

i. Normally, 5P60 can auto adjust white balance, but for some CRT need to

adjust white balance carefully by hand. Set BRIGHTNESS and
CONTRAST at normal status, receive GREY SCAL and entering factory
mode press KEY 3, set WPR at 31, adjust WPG and WPR to obtain white
balance.

Model No: CT-25CF9N
Version 1.0

23

h. RF. AGC adjustment (KEY 4)

i. Receive 60dB RF signal. Connect Digital voltmeter positive terminal to

tuner AGC terminal and negative terminal to GND.

ii. Entering the AGC item in factory mode by the REMOTE CONTROL.

Metod. Press key CLOCK, P.M. inturn, you can enter into factory mode,
then press key “4” and select AGC item by PROG+/-.

iii. Adjust “VOL+” and “VOL-” keys to obtain 3.8V Digital voltage meter

reading or just no NOISE on screen.

iv. Press key “ + ” to exit factory mode.

i. E2PROM initialization

i. When in repairing, we can replace E2PROM by other empty or unempty

E2PROM, but you must initialize E2PROM to avoid unknown things.

ii. Methods:

1. Press remote control KEY CLOCK, P.M. in turn to entering
factory mode.

2. Press remote control KEY 8 to entering INIT menu, then press key
PROG +, you can see “INIT BUSY” waiting for about 5 seconds
till “BUSY” disappeared, then POWER OFF and ON by main
power E2PROM initialization in completed.

iii. Setting the data in E2PROM. When in manufacturing, first you read the data

from an good E2PROM 24C08, then WRITE to other E2PROM 24C08.

24

Model No: CT-25CF9N
Version 1.0

Service items

This appendix shows information about service items that are available. The table list all possible
available service items with its.

25

Model No: CT-25CF9N

Version 1.0

26

Model No: CT-25CF9N

Version 1.0

27

Model No: CT-25CF9N

Version 1.0

28

Model No: CT-25CF9N

Version 1.0

PURITY ADJUSTMENT

1. Before color purity adjustment, warm up the TV set over 15 minutes and fully degauses.

2. Receive pure white signal in AV status and set the TV receiver dynamic.

3. Go to factory mod MENU2. After write down the values of R-BIAS and B-BIAS, set the
values of R-BIAS and B-BIAS zero.

4. Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards color
purity Magnetic loop.

5. Adjust color purity magnetic loop to make the green area at the center of CRT screen.

6. Slowly push the deflection yoke toward the front of CRT and set it where a uniform green
field is obtained. Tighten the clamp screw of the deflection yoke.

7. Restore the values of R-BIAS, G_BIAS and B-BIAS.

CONVERHENCE ADJUSTMENT

1. Receive a dotted pattern. Set the TV receiver dynamic.

2. Loose the convergence magnet clamper and align red with blue dots at the center of the screen
by rotating (R, B) static convergence magnets.

3. Align Red/Blue with green dots at the center of the screen by rotating (RB-G) static
convergence magnet.

4. Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to
obtain the good.

Model No: CT-25CF9N
Version 1.0

29

MECHANICAL DISASSEMBLY

Cabinet back removal

1. Refer to figure 1, remove 10 screws.

2. Pull off cabinet back and remove.

Chassis removal

1. Remove cabinet back.

2. Discharge the picture tube anode (2
lead).

3. Disconnect Degaussing coil socket (KE), picture tube socket, Deflection yoke connector
(KDY), speaker connectors (KL and KR) and 2

4. Remove chassis completely by sliding it straight back.

DEGAUSSING
COIL

DEGAUSSING
COIL SOCKET

nd

anode lead) to the dag coating (picture tube grounding

nd

anode lead.

DEGAUSSING
COIL HOLDER

PICTURE TUBE
GROUNDING LEAD

To CRT Unit
ground

30

Model No: CT-25CF9N

Version 1.0

31

Picture tube removal

CAUTION: Do not disturb the deflection yoke or magnet assembly on the picture tube Neck. Care
must be taken to keep these assemblies intact, unless picture tube is being replaced. Discharge the
picture tube to the coating before handling the tube.

1. Remove chassis, referring to chassis removal instructions.

2. Place cabinet front face down on the soft surface.

3. Remove the screw on each corner of the picture tube and GENTLY lift the picture tube out of
the cabinet.

4. Install a replacement picture tube in reverse order. Properly install the degaussing coil and
picture tube grounding lead on the picture tube. See Figure 2.

Note: If picture tube is being replaced, mount the Degaussing Coil on the picture tube. See following…

4

6

Model No: CT-25CF9N

Version 1.0

2

3

1

5

10

9

R802

NOTE: ACTIVE AREA , NO TOUCH WITH PERMITTION

1

CN601

H602

DEGAUSSING
H602

CN601

2
1

AC220V

5P60 SCHEMATIC DIAGRAM

TUNER

XG6VS96A

5.0V

+

R102

C101

27K

220uF

39K

R103

C102

R106

C105

100nF

4.7K

10nF

C104
10uF

R101

Gnd

100K

L: VL

R166

C132

M: VHF

470

100P

H: UHF

AGCTUNING

BAND

K0 K1 K2 K3 S1 S2

D0

ST

D1

2

1

+

D2

6

D3

0

VDD

D4

AV/TV

D5

TUNE

SETUP

D6

R806

D7

100K

R844

1.8K
R840
75

Gnd

OPT:(Video status)

RGB

Internal: 0.0...2.0 V

BLK

OPT

External (16:9): 4.5...7.0 V
External (4:3): 9.5...12.0 V

BLK:(RGB status)
Internal: 0.0...0.4 V
External: 1.0...3.0 V

R831

R834

1K

47K
R836

R828

75
R835

1K

CVBS_L

R821

47K
R822

1K

CVBS_IN

47K
R811

CVBS_R

R819

75
R8181K

IN1_L

R812

47K

1K

AV1_IN

R810

IN1_R

R817

75

1K

R826

Gnd

4.7K

123

CN805

TV_OUT

OUT-R

OUT-L

CON3

POWER

T604

9

+

C604D

*C606

2200pF/1KV

330uF/420V

8
7

C604C
2200pF/1KV

L601

61115

L5MM

4

1

R605

10

D601
BA158

D603

2

+

BA158
C613
47u/50V

R604

BCK-50-0223

620

C607
2200pF

D602
IN4148

C608

0.01

ZD601

R603

4.7V

C611

C610

470

3.3n

22n

C609
47n

Gnd

+5V

+5V

PHILIP S CODE

SYS

VOL+

5

S.M

MENU
SOUND

PIC

Q.VIEW

Q804
S3904

R843
47K

SW_C

C814

100u
IN2_L
AV2_IN

IN2_R

R827

4.7K

R818

4.7K

TLP621

IC601

R617 8.2M/1W

1

C612
2200pF/AC275V

C106
10nF

L101
10uH

I/II

VOL-

4

9

TEXT

R821

R813

4.7K

IF

11

R120

75

C108
10nF

R132

1K

PROG-

PROG+
MUTE

3
7

8

-/--

P.M

GAME

CLOCK

+8V

(VIDEO/AUDIO SWITCHING)

C815

1

0.01u
VCC

+

7.9V
2

VCC

7.9V
3

C816 1u

Gnd

Gnd

+

IN2 L

4.2V
4

C817

+

AV2 IN

0.47u

3.2V
5

C818 1u

+

IN2 R

4.2V
6

C819 1u

+

IN3 L

4.2V
7

C821

+

AV3 IN

0.47u

3.2V
8

C822 1u

+

IN3 R

4.2V
9

C803 1u

+

IN4 L

4.2V

C823

+

AV4 IN10D4

3.2V

0.47u
11

C804 1u

+

IN4 R

4.2V

12

SCL

R816

4.7K

4.7K

3.3V

R813

13

SDA

100

3.2V

14

NC

R814

0V 0V

100

SDASCL

L602

18

D605

L5MM

RU4A
C616

100uF/200V

17
16

Gnd

C619

1000p/2KV

R613

14

2

0.33
13
12

Gnd

R610

2

0.33

10

C623

Gnd

*R609

8.2K
IC602

SE120

R607

1K

D604 BA158
C615

1nF

Gnd

LED801

LED801

11
13
15

17
19
21

1

1

Q801
C2120

+

_

CN708
AV3

P701

U/AV3_L
P702

V/AV3_R
P703

SCART2

1

A_rin

3
5

7
9

2

2

220P

C801

47u

1

2

Y/AV3

A_ro
A_lo

GND

B_G

A_lin

B
ID
G_G
NC
Green
NC
R_G

GND

R
BL
G

GND

Vo
Vin
G

4

DL601
JQX-14F

SW601

C802

X801

CRYSTAL

C803

220P
C804

0.1u

CN702 CN702A
YUV AV3_AUDIO

12345

2
4

6
8
10
12
14

16
18
20

CN705

123

CON4

AV

L

R

RT601
10

D611

IN4148

F601

5.0AL/AC250V

2.2M/0.5W

1
2
3
4

5
6
7
8
9

6

L

R

Gnd

SCART1

1

A_rin

3

GND

5

A_lin

7
9

NC

11

NC

13

GND

15

BL

17

GND

19

Vin

21
Gnd

R600

Q613
C1815

R149 10K

1N4148

D104

Q110
C2216

+33V

REMOTE CONTROL

D6
D7

S2
S1
REM

IC801A
UPC6134

VDD
X-OUT

X-INT
GND
RESET10K0

P706

P707

1
2
3
4
5

6
CN706
CON6

A_ro

2

A_lo

4

B_G

6

B

8

ID
G_G

10

Green

12

R_G

14

R

16

G

18

Vo

20

G

CN204

1

CON2

2

1

CN202

2

CON3

3

2200pF/1KV

R601

7

4.7 NTC

C603

220nF/275VAC

T602
15mH X 2

C602
220nF/275VAC

T601
15mH X 2

C601

220nuF/275VAC

C628

47u/25V

+

Gnd

TUNER

AGC1VT2Hi/n.c.3Mi/BS1(SCL)4Lo/BS2(SDA)5V+6i.c.(V+)7i.c.8i.c.(+33V)9IFGND10IF

R147

R148

39K

39K

+

C100

C134

47nF

47nF

R146

180

+ C128

100uF

Gnd

A

B

20

C

D5

19

D

D4

18

E

D3

17

F

D2

16

G

D1

15

H

D0

123456

14

K3

13

K2

12

K1

11

YC

CN801

CN701

CON8

CON6

8

1

7

2

6

3

5

4

4

5

3

6

2

1
CN703
CON8

1

CN802

2

CON6

3
4

6

5

5

6

4

7

3

8

2

1

CN803

1

CON2

2

2

CN704

1

CON2

2

1

CN806
CON2

BRIDGE
KBJ6J

C604A

C604B

2200pF/1KV

R602

2

120K/2W

BA158
D600

3

1

5
4

KA5Q12XRF

2
IC604
KA5Q12XRF

R612

ZD602

+

10K

C627

JJ

R611

220u/25V

47K

C139
100uF

R133

4.7K

C109

D608 RU4B

390P/500V

Gnd

Gnd

R135

C110

4.7nF
R130

1.8K

OPTION

COMB_FILTER

Y/CVBS

IC801

M52797SP

CHIP SELECT

C617

220p/2KV

L603
120uH

+

Gnd

C622

D607
RU3YX

1
2
3

+

L212 10uH

L211 10uH

R841
47

390p/500V

RD2

RD3

RD4

RD52KRD6

5.6K

3.3K

2.7K

1.5K

SW2 SW3 SW4 SW5 SW6 SW7 SW8SW1

+8V

SAW102

R144

K9362M

4.7K

R136

10

12345

R137

C125

4.7K

Gnd

10nF

SAW101

L104

0.82uH

K6259K/K6263K

(K2962M/G3964M FOR CE)

C126

1

D103
BAT85

R141

4.7K

Q112
C2717

100u/16V

+

C239
100u/16V

Gnd

AM_AUDIO

28

4.4V
27

4.2V
26

3.7V
25

4.2V
24

3.5V
23

3.0V
22

3.5V
21

3.7V
20

2.3V
19

4.4V
18

0.1V
17

0V

16

0V

15

+33V

IC103

R635
2K

10

2

Gnd

Gnd

C828 0.01u

C235 0.1u

+

Gnd

C240

R242
100

FBISO

FM_AUDIO

C809

+

1u
C811

+

0.47u
C808

+

1u
C807

+

1u

C805

+

1u
C804

+

10u
C806

Gnd

+

1u

Gnd
SW_C

+33V

+15V

+140V

2

R633

22K/1W

C635
100uF/50V

+

Gnd

C618

R619

2

2.2/2W
C621

100u/35V

R636 6. 8/2W

2

C620

100u/35V

R451

47K

R618

5.6K

4
5

3

8

SYSTEM

R143
47K

IF2

IF1

IC803
TDA9181T

1

Cin
1V
2

INPSEL

OUTSEL

5.3V
3

Y/CVBS2

Y/CVBSout

1.7V
4

DGND
0V
5

VDDD

Y/CVBS1

5.2V
6

VCCA

5.2V
7

SC

0.5V

FSCSEL8FSC
0V 0.6V

+8V

TV_L

TV_R

TV_IN

+8V
R824
390

R830
47K

+

C823
1u
R823

R829

470

270

Gnd

R833

1.8K

Gnd
+8V

Q802
S3904

+5V

R832

R842

1.8K

10K

R820

Gnd

10K

Y_OUT

Y/CVBS

150/2W

2

R624

R627A

3.3K
Q606

REF3A
R625
10K

KA431

R630

2

220/2W

R622

2

1K

Q605

R627
150/2W

REF3A
R623
1K

KA431

IC605

In Out

7808

+

Gnd

Gnd

IC606

In Out

7805

+

Gnd

Gnd

R626 47K
Q604
3094

Gnd

AGND

SYS1
SYS2

Q801
S3904

220u/16V

Q803
S3904

Q607
3094

Cout

C827

C801/C803

0.22u

AUDIO_L
AUDIO_R

K

K

+

+

SIF1

Gnd

C802

0.22u

C633
220uF/16V

C630
220uF/16V

SIF2

C236
1nF

16

1.5V
15

5.0V
14

1.5V
13

0V

12

1.3V
11

0.4V
10

5.0V
9

C824

+

100u

J805
22

+3.3V

2
1

Gnd

2
1

Gnd

+8V

+5V

C436

0.1uF

R452

>1V WORKING
<0.7V STANDBY

SYSTEM

+8V

R238
10K

Q216

R239
47K

3904

C238

47pF

R245 10K

Gnd

Q215
3904
R235

C245

10K

0.01u

V

TV_OUT

Y
U

OUT_L

+5V
+8V

OUT_R

SYS

+8V

100uF

+3.3V

+

C634

10uF/50V

+5V_A

+

C625

10u/50V

+8V

+5V

STANDBY

Gnd

47K

10nF
Q106
C2717

R134
100

C_IN
+5V
Y/CVBS

ZD801

5.1V

Gnd

+8V

NC

TV_L IN

TV IN

TV_R IN

OUT L

AV OUT

OUT R

BIAS

V2 OUT

D5

GND
GND

+138V

R639

0.33/3W

3

C631

+

100uF/200V

ZD33V

+15V

+

C626
1000uF/25V

+12V

Gnd

+

C624
1000uF/25V

Gnd

Q602
A966

R631

2.7K

Q608

3094

Gnd

TUNING

R237
47k

FROM IC801
M52797
SYS:PAL/NTSC
L: PAL
H: NTSC

FSC_9Pin
COMB:

R236

2.3V+FSC;

10K

Y/C: +5V
BYPASS: 0V

FSC

AV1

AV2

C?

0.01uF

IC802 H EF4052

9

2 TO 4

Decoder

A1

0.1V
10

A0

5.0V
11
0V
12
0V

2

13

1

0V

0

14
0V
15
0V

Gnd

+8v

16

Vdd

+

7.7V 2.6V

C233

Gnd

OPTION

TRUBAS S

R421 27K

C421

0.1

R423 3.3K

C422

0.1

R420 47K

C423

0.1

R422 8.2K

C425

0.1

R424 8.2K R426 1. 8K

+

C439
10uF

Gnd

Gnd

+3.3V

+5V

R1

4.7k

4.7K

STANDBY
SCL
SDA

AV1
AV2
KEY
GRAD

BAND
SYSTEM

+8V

+8V

C_out
Y_out

220uF/16V

EW
VDRB

VDRA
IF1
IF2

AGC
SIF1
SIF2

C172
22nF

C127

FSC

C?

C?

0.01uF

0.01uF

R?1KR?1KR?

8

Vss

0V

7

Vee

0V

L209 10uH

6

E

0V

5

XT-6.5

L208 10uH

2.3V

3

4

3

2.6V

XT-6.0

2

3

1

2.0V

0

L206 10uH

2

2.6V
XT-5.5

1

L207 10uH

XT-4.5

Gnd

1

FILOUT

4.0V
2

FIL1

4.0V

0.1

C430

3

FIL2

4.0V
4

C429

FIL3

0.1

4.0V

IC402

5

R428 47K

FIL4

NJM2192A

4.0V
6

FIL5

BASSINR

4.0V

100K

R427

7

FIL6

4.0V
8

FIL7

4.0V
9

MOUT_R

BASSOUT

4.0V

10

PCOUT

4.0V

C428 0. 01

11

FIL8

4.0V

12

FIL9

GAINSW

4.0V

13

C444 1u

+

C1

0V

14

C443 10u

+

C2

VREFOUT

0V

GND15V+

0V

C435

0.1uF

+5V

C160
10nF

C161
100p

Gnd

R213

+5V

2.7K
+3.3V

R9
100R7100

C159

R5

R4

R6

R2

4.7k

4.7k

3.3K

4.7k

0.01uF

L112
10uH

C131

+

100nF

C129

Gnd
R162 100
R163 100
R164 100

C171

R168

100nF

39K

Gnd

1K

Gnd

+8V

R217
10

Q212
3904

R225
180

X205

R224
180

Gnd

X205

Q213

R221

R231

180

1K

X205

R219

180

X205

30

C4

4.0V
29

C3

4.0V
28

INL

4.0V
27

BASINL

4.0V
26

INR

4.0V
25

4.0V
24

OUTR

4.0V
23

OUTL

4.0V
22

4.0V
21

MODE1

0V

20

MODE2

0V

19

0V

18

VERFIN

4.0V
17

4.0V
16

7.9V

C442

+

220u

Gnd

100pF

R8

R10

R161

3.3K
1

Gnd

10K

2
3
4

5
6
7

R202

C200

8

ZD206

9

5.6V
10

Gnd

11
12

C162

13

Gnd

220nF

14

C163

15

220nF

R145

C164

16

15K

2200pF

17

+

C165

C130

18

4700pF

1uF

+

C166

C138

19

100nF

2.2uF
20

21
22
23
24
25

26
27
28
29

+ C135

C168

10uF

30

C170

2200P

2200P

R222 3.3K

31

+

C173

C174

330pF

1.5nF

C124

C234

Gnd

+

2.2uF
QSS ONLY

4.7uF

CN204

V

1

Y

2

GND

3
4

U

CON4

+5v

R232
10

VIDEO_OUT

FROM UOC P38
R216
100

R218

180

3904

TV_IN

R229
270

CVBSINT

TO UOC P40
R226
470

Gnd

0.01

C432

R430

C433

1K

0.01
AUDIO_L

Gnd

R432 3.3K

C447
1uF

AUDIO_R

C446

C445

R429

1K

R431

1uF

C448

1K

Gnd

Q405
S3904

R436 10K

Gnd

R437 10K

C437

+

10u

C438

+

10u

R433

10K

R438

+

10K

C440

R434

Gnd

10u

L402
10uH

+8V

+5V

RD7

RD81KRD9

1.2K

47

10u/16V

8

WP

Vdd

5.0V

0V

7

n.c.

PTC

0V

6

A2

SCL

3.3V

0V

5

Vss

SDA

3.2V

0V

Standby

2.6V

SCL

3.3V

SDA

3.2V

Tuning

2.7V

AV1

0V

AV2

5V

Key/Led

3.3V

Status_AV

GRAD

0V

Vss C/P

0V

0V

Band1
System
M/L/L'

4.6V

VssA

0V

IC101

SECPLL

2.3V

TDA93XX/N2

Vp2

7.9V

PHILIP S UOC

DECDIG

5.0V

(TDA9363PS/N2

PH2LF

TDA9365PS/N2

3.5V

TDA9384PS/N2

PH1LF

TDA9386PS/N2)

3.9V

Gnd3

0V

DECBG

4.0V

AVL/EWD

4.8V

VDRB

AUDOUT/AMOUT

1.1V

VDRA

CHROMA

1.1V

IF1

1.9V

IF2

1.9V

IREF

CVBSINT

3.9V

VSC

3.8V

Tuner AGC

IFVO/SVO

1.7V

AUDEEM/SIF1

3.1V

DECSDEM/SIF2

2.3V

Gnd2

AUDEXT/QSSO

0V

SNDPLL/SIFAGC

2.2V

0.6V

0V

AVL/REFO32H. out

L110

+5V

10uH

R171

10
L111
10uH

C113

1uF

Gnd

Gnd

N.C.
N.C.
N.C.

C114

+

47u

C112

0.01

Gnd

Gnd

Gnd

R128 100

TV_L

R123 100

TV_R

+5V

R130

L106
10uH

2.2

R131

L107
10uH

10

P2: MUTE
P1: BASS_CON
L: BASS IC On
H: BASS IC Off

C408

0.01

Gnd

MUTE

R405

1.8K

+5V

R404
10K

R435
10K

C407

Main_L

1u/N.P.

+

C406
100uF/16V

Gnd

C405

Main_R

1u/N.P.

220u/16V

12345

CN003
CON5

+CR1

RR1 100

RD11

1K

1

24C08
IC102

2

3

4
Gnd

64

IRin

4.9V
63

STAT

0V

62

GRAD

0V

61

VddP

3.3V
60

Reset

0V

59

X101

XTALout

12MHz

58

XTALin

C206

57

OscGnd

0V

56

VddC

+

C216

3.3V
55

100u

VpE

0V

54

Gnd

VddA

3.3V

R204 100

53

Bout

3.1V

R205 100

52

Gout

3.1V

R206 100

51

Rout

2.9V

R207

50

Iblack

5.9V
49

BCLin

2.3V
48

B2/Uin

2.5V
47

G2/Yin

2.5V
46

R2/Vin

2.5V
45

Fblin

4.0V
44

3.3V
43

C235

1.5V
42

CVBS/Y

3.7V

0.01uF

41

Gnd1

0V

40

3.9V
39

Vp1

7.9V
38

R209

3.3V
37

PLLIF

2.4V

390

100nF

36

EHTO

1.7V
35

3.7V

R241

34

FBISO

+8V

0.5V

27K

33

R212

1.8K
R210

100K

SDA

R173

100

C178

R110

1uF

10

Gnd

33

32

31

0.7V0V0V

Sysclk

34

WS

SCK

0.1V

35

Vddd3

5.0V

36

Vssd3

0.2V

37

P1

0V

38

MONOIN

2.4V

39

EXTIR

2.4V

40

EXTIL

2.4V

41

V_REF2

2.4V

42

P2

0V

43

OUTM

2.4V

Vssa4

44

0V

outR2Vdda13Vssa14Vssd15Vddd16Vssd27n.c.8TP29Nicam

2.4V

2.4V

4.8V

1

out_L

C117

Gnd Gnd

1uF

C115

0.01
C116

0.01

Gnd Gnd Gnd Gnd

C409

0.01
43

44

0V

4.0V

4.0V

1

n.c.

n.c.

Cps242AinL

0V
2

Cps1

4.0V
3

AinR

4.0V
4

P2

4.0V
5

SCinR

0.4V
IC401

6

n.c.

TDA9859

0V
7

SCinL

4.0V

AUDIO CONTROL

8

P1

2.8V

9

MinL

4.0V

10

Csmo

7.8V

11

n.c.

0V

n.c.12MinR13Vp14SCoutR15Agnd16Dgnd17MoutR18LinR19Cbr120Cbr221n.c.

3.9V

7.9V0V4.0V

+

C403

C404

0.1uF

Gnd

L401
10uH

+8V

R203 3. 3k

R201 10k

27pF

Q203
3904

10K
R228 4.7K

+

C218

C230

0.22uF

C212

gnd

C213

0.1uF

SCL

R174
100

29

3.3V

3.5V

SCL

SDA30SDD

IC103

TDA9874

NICAM

0V

41

40

4.0V0V0V

MAD

SCoutL

Gnd

M001
(38K)

LED001

Gnd

100uF/16V

C205

Gnd

27pF

Q202
3904

R253 100

220uF/16V

Gnd

Gnd

C211
100nF

QSS

R111
10

C177

27

28

5.0V0V5.0V

Vssa3

Vdda3

0V

4.8V
Gnd Gnd Gnd

C118
1uF

Gnd

39

38

n.c.

0V

0V

Gnd

R403

13k

ZD205

C202

5.1V

0.01u
R200

100

L201 10uH

C217

+

C204
100nF

Gnd

L202 10uH

C208

L203

100nF

+

Gnd

Q201
3904

R252

100

ZD202

ZD204

8V2

8V2

FM

+

C219

3.3uF/50V

Gnd

Gnd
R211
27K

QSS

L109
15uH

C123
47p

Gnd

Gnd

1uF

26

25

24

2.0V

SIF1

V_ref1

CRESET

ADDR2

XTALO
ADDR1

0V0V0V0V0V

10

Gnd

C411

68n
37

4.0V

4.0V

4.0V

MoutL

4.0V

4.0V

4.0V

C402

68n

R536

220

R538

2

12K

D503

Q532

BA157

BF420

R531

Q531
C4544

22

Q533

R532

BF421

2.2K
R533

R534

R535

270

22

S-Gnd

270

C502

D502

270PF

IRIN

OPT

+3.3V

10uH

+8V

C215
100uF/16V

R255

CN203

39K

CON6

1
2
3

R251

4

100

5
6

D313

ABL

ZD203

IN4148

C220

8V2

0.1nF

R215 27K

Gnd

U
Y
V

BLK

B

C224
100nF

G

C225
100nF

R

C226
100nF

FM_AUDIO

C_OUT
Y_OUT
CVBSINT

+8V

L205

R330
680K

+8V

10uH

VDRA

VDRB

VIDEO_OUT

FBISO

EW

EHTO

H_OUT

OPTION

C176

0.1
23

2.0V

0V

22

test1

Gnd

0V

21

Vdec

C122

0V

20

1uF

Vssa2

0V

19

Gnd

5.0V
18

I_ref

2.0V

TEST2

TP3

XTALI

1.6V

1.6V

5.0V

Pclk

0.5V

TP1 SIF2

11

C412
33nF

34

4.0V

0V

n.c.
n.c.

Cbl235Cbl136LinL

n.c.
Ctl

LoutL

SDA

n.c.

SCL

LoutR

Ctr
n.c.
n.c.

0V

4.0V

22

C401

0.15uF

17

0V

16

0V

15
14
13

12

Gnd

0V

0V

4.0V

4.0V

3.2V
0V

3.3V

4.0V

4.0V
0V
0V

C401 33nF

(NO TRUBASS)
(P20-21,P35-36)

3.3K/7W

R134

8.2K
H_OUT

R310

Gnd

100

C314

100p

X101

24.576MHz

+200V

HEATER

D314

IN4148

R408
13k

33

R407 27K

32

5.6n

C413

31

Gnd

D403 IN 4148

R439

C414

30

1K

R443

1u/50v

29

1K

C415

28

100p

Gnd

C416

27

100p

R440 1K

C417

26

1u/50v

25

R442

1K

C418

24

5.6n

23

Gnd

R402

R401

100

100

SDASCL

1N4148

R521

22

R522

CON6

2.2K

H501

+8V

S-Gnd

1

KB

2

D505

KR

3

1N4148

4

KG

5

S-Gnd

6

+8V

ZD501

8V2

R511

R503

22

1K

R512

2.2K

S-Gnd

D508

1N4148

V

H

FBISO

R331

1

4.7K

ZD303
8V2

C304

C303

4700p

560p

Gnd

T302

C326

H-DRIVER

4.7u/250V

2

+

R621

Gnd
C2482
Q304

C313
2200pF/500V

R302

R313

+138V

2.7K

1K

Gnd

R306
220K/0.5W

+

2

CN302

5

C307

4

10uF/250V

Gnd

GND

3
2
1

R323

2.7K
Gnd

ZD302

R320

15V

1K

100uF/16V

C410

+

R406

1.8K

Gnd

D404

IN4148

OUT1-1GND12Vcc13OUT1+4N.C.5IN1+6N.C.7IN1-8IN2-9MODE10SVR11IN2+12N.C.13OUT2-14GND215Vcc216OUT2+

Q403

R409

S3904

7.8V

1K

Gnd

Q404

R411

S3904

1K

R410
47K

Gnd

Gnd

ZD401

6.8V

R448

+

10K

C449
100u

AUDIO_R
AUDIO_L

+8V

S-Gnd

R526

R528

220

2

12K

D506

BA157

Q522

BF420

Q521
C4544

Q523

BF421

R523

R524

R525

270

22

270
C504
270PF

S-Gnd

R516

220

R518

2

12K

D509

BA157

Q512

BF420

Q511

C4544

Q513

BF421

R514

R513

R515

270

22

270
C506
270PF

S-Gnd

VERTICAL AMP

IC302
TDA4863

7

1.0V

1.0V

R329

R328

C333

2K

1000p

2K

C324
1000p

GND

C325

R327

1

5.6

0.1

1

R333 220

R325

2

1/1W

Gnd

V-DY

H-DY

*C310
560n/400V

*L302
20uH

R305 12K/3W

3

R309

D303BA158

1.5K
*C302B

*C302C

*C302A

7n2/2KV

8n2/2KV

2.2n/2KV

*Q301
C5150

D302
BY228

R301
56

D301

*C301

RU4B

22n/630V

10

2

Gnd

R303 3. 3

C311
680P

C321

Gnd

680P

D304 BA158

D309 BYW36
C319
680P

D311
BYW36

+

C318
470uF/35V

Gnd

R315

2

6.0/2W

IC404 TDA8944

0V

7.8V0V7.9V0V7.9V

7.9V

15.8V
C452

+

C451

1.5nF

0.22
C455

C457

0.22

C453

Gnd

0.22

+15V

R445 10K R454 10K

+

Gnd

C446
1000u

R454

4.7K

Gnd Gnd

R44710K

MODE:

Q402

0V: WORK

C465

C1815

>6V:MUTE

10n

Gnd

1

1

2

6

5

4

3

10u/250V

C320

0.1
R326

5.6

T301

+200V

JF0501-21135

0.1V

C454

1.5nF

C501

0V

+

B+

GND

+15V

-14V

AFC

7.9V

C431

0.01uF

D402
IN4148

R537
1K

R527

1K

R517
1K

+

-15.2V

D312

BA158

220
R324

2

3.3K 1/2W

L303790uH

C306
1uF/250V

AUDIO AMP

7.9V0V7.9V

C462

0.1uF

Q402
C1815

+200V

S-Gnd

L490

R490

C450

0.22

2200p/500V

16.4V
+

C316

141uH-284uH

C305

4.7u/50V(480mA)

R453

4.7K

CRT BOARD

EHT

X705

KB

KR

KG

G1 G2 G3

S-Gnd

H-Gnd

SCREEN

1

CON1

C503

CN501

4700pF/2KV

1

S-Gnd

CON1

L501
100uH

C502

-8.4V

100uF/35V

R451
2K

C490

220n/100V

0V

Gnd

R449
10K

H502

L502

1
2

L5MM

3
4

H-Gnd

CON4

G2

EHT

FOCUS

+15V

-14V

V_PLUS

GND

100uF/16V

C322

+8V

+

Gnd

R318

*R317

10K

8.2K

R319

4.7K

D308

R321

1N4148

Q307

470

C1815

Gnd

ABL

+15V

-14V

V_PLUS

+138V

SPEAKER

2
1

H401A

8 12W

SPEAKER

2
1

H401B

8 12W

+

C456
1000u

+15V

ITEM

R609
R307
R317

R315
RT601
C310
C301
C302A

C302B
C302C
C601
Q301
L302

T602
T301
F601

NOTE:
(1)ALL RESISTER S ARE IN OHM,ALL COILS AR E IN H;
ALL THE CRYSTALS ARE IN HZ;
(2)THE AREA ENCLOSED BY ------ IS LIVE AREA AND
DIRECTLY CONNEC TED TO MAIN VOLTAGE.
(3)THE DEVICE WITH ARE SAFETY CRITICAL
DEVICES;
(4)THE DEVICE WITH * AR E S UBJECT TO CHANG E O R
OMIT ACCORDING TO DIFFERNT TV SETS;
(5)THE AREA ENCLOSED BY - - - IS OPTIO NL;
(6)THE CIRCUIT I S SUBJECT TO CHANG E WITHOUT
NOTICE!
(7)All components with sign is FDA critical components.

TITLE :
P/N :
SYSTEM : PAL/SECAM/NTSC BG/DK/I/M

ISSUED BY :
CHECKED BY:

APPROVED BY:

REV DAT A : 2003-12-1

vp1 +12.5v1vp3 -2Vp3 pump3vp4 -12.5v4Vout5INN6INP

15.4V

470uF/25V

+

+

C317

C315

100uF/35V

Gnd

R322

2

2.2

T490
2mH

R491
100 1/6W

J301

EW

R304

*R307 47K

2

6.8

+

IC301

STP5NK50ZFP

Gnd

11

EHT

EHT

FOCUS1

Focus

SCREEN

G2

9

R334

R316

8

GND

2

ABL

1K/1W

120K

7
HEATER

Gnd

6

GND

C309
100nF

CN401A

1
2

7.8V

15.8V

17

R446

3.9K

C458

+

CN401B

10u

1
2

+8V

R441

+

C426

10K

100u

R444

2.7K

C464

1000p

Gnd

+8V

29" LG PHILIPS

CRT

34" NOVEL

A68KYN690

M78KXC110

X 520MGFX 01

8.2K 1/4W

6.2K 1/4W

75K 1/4W

47K 1/4W

8.2K 1/4W

11K 1/4W

6.0 2W

2.2 2W

10 P.T.C.

10 P.T.C.

560n 400V

470n 400V

0.22n 630V

0.22n 630V

2.2n 2KV

2.2n 2KV

7.2n 2KV

5.6n 2KV

8.2n 2KV

8.2n 2KV

220n 275V

220n 275V

C5150

C5148

20uH

36uH

15mH X 2

15mH X 2

JF0501-21135

JF0501-21119

T5.0AL/250V

T3.15AL/250V

5P60 SCHEMATIC DIAGRAM

NICAM/TELETEXT/TRUBASS/COMB
2 SCART/YUV/S_VIDEO/AV_IN/OUT

29" ORION
A68QDL080

X013(B)

6.2K 1/4W
47K 1/4W

9.1K 1/4W

5.6 2W
10 P.T.C.
390n 400V

0.22n 630V

2.2n 2KV

4.7n 2KV

7.6n 2KV
220n 275V

15mH X 2
JF0501-2202

T3.15AL/250V

0502-D29001-04

29"LG.PHILIPS

A68QCU259

X56S

8.2K 1/4W
47K 1/4W
11K 1/4W

5.6 2W
10 P.T.C.
390n 400V

0.22n 630V

2.2n 2KV

3.9n 2KV

8.2n 2KV
220n 275V

C5148

C5148

36uH

40uH

15mH X 2
JF0501-2202

T3.15AL/250V

No Part no Description

1 SKCM0025TM0110 CABINET COLOUR MATCH-METAL SILVER GREY #MS G001
2 SK100729TM0001 FRONTLINS (REMOTE CONTROL WINDOW)
3 SK100729TM0001 FRONT LENS (LED WINDOW)
4 SK100925TM0001 POWER KNOB-ELECTROPLATING SILVER (abs)
5 SK100425TM0002 SIDE AV JACK BRACKET-DARK GREY #DG001(ABS)
6 SK100829TM0001 CONTROL KEY KNOB-ELECTROPLATING SILVER (ABS)
7 SK060125TM00W6 BACK LABEL FISHER TF25M2T W/PCBENG
8 SK100225TM0003 BACK CABINET-DARK GREY #DG001(HIPS) 94V-0
9 SK1016HS080006 BATTERY DOOR-METAL SILVER GREY #MSG001 (ABS)
10 SKHS08S0360600 HANDSET-36 KEYS FOR OVERSEAS NORMAL GREY ENG (5N11)

33

Model No: CT-25CF9N
Version 1.0

TYPICAL TROUBLE SHOOTING CHART

No BG selection, only

Factory Menu BG System
option not set

Press clock P.M. ( )
button
Menu. Press RC button 5, edit OP5
BZT1 to 1.

OP5: 255: 1 1 1 1 1

No change
I BG

Figure 1-1: Repair logic chart for BG System

Model No: CT-25CF9N
Version 1.0

to enter Factory Mode

1 1 1

IC802 switch
selection faulty

BG SETTING

BG selection O.K. but Dark or blue screen & No Pix

Other system mode
also No Picture

Short circuit IC101
pin 38 & pin 40

Selection
circuitry after
IC101 faulty

Open J151, direct
flyover wire from
J151 to C230

Changeover sound system selection

Other system mode
Normal Picture

IC802 4052 switching
selection abnormal

Open circuit R225, 4052

RF/IF stage
malfunction

IC801 switch selection
faulty

& J144, J145. Restore to
normal.

Replace IC802 4052

OK NG

34

Yes

f

Stage IC801 switch
faulty

Flyover wire
bypass J151 to
capacitor C230

Replace
IC801

Figure 1-2: Repair logic chart for search/ tune & stored

Can search/ tune and stored
station

Subsequent video selection
circuit malfunction

Open circuit jumper wire

NG OK

Replace
IC102 &
IC101

Cannot search / tune station

Short circuit IC101 Pin 38
& Pin 40

Stage IC802 switch

Check during
switching J144,
J145 changeover o
voltage level, and
IC802 supply
voltage.

Without snowy noise
spot

RF/IF circuitry

35

Check & ensure IC102 is

Cannot search/ tune station

With snowy noise
spot

Check electrolytic
capacitor C212,
resistor R209;
replace if faulty.

Model No: CT-25CF9N
Version 1.0

p

N

Check IC301 and
feedback path, C305,
C303, replace if
faulty.

Figure 1-3: Picture Geometry Distortion repair logical chart.

No Yes

o response Effect is slight but not

Picture Geometry Distortion

Enter into Factory Mode and
use RC adjust Menu. 1

arameter EWW, EWP. Are
these adjustment effect
changes of picture shape?

Check & replace
C301, D301 if
faulty.

Check & replace
R307, IC301 if
faulty.
Check & replace
D303, R305, C306 if
faulty.

36

Readjust Main
Menu parameter.

Model No: CT-25CF9N
Version 1.0

Repair precaution:

1. Use isolating transformer and rubber for safety isolation.

2. Obey operating procedure, according factory alignment explanation for parameter setup to
ensure good function requirement and specification before leaving the factory.

3. Components with safety mark should be replaced with what the original factory requires.

4. To solder out the IC, irons should have good grounding to prevent static charge.

5. Should not replace components and modify the circuit at will.

6. Follow checking by eyes before connecting AC principal. When smoke is found resulting
from the unit burnt, AC power supply should be disconnected first. It will be reconnected to
AC supply only when the problem has been solved.

7. After repair, all functions should be checked. Reassembly should be done according good
workmanship and unreasonable performance is prohibited.

8. To replace CRT, anti-explosion precaution should be followed.

37

Model No: CT-25CF9N
Version 1.0