Philips L9.1A Schematic

6 Fault finding trees, diagrams

6 Fault finding trees, diagrams and overviews

and overviews

START

Connect a pattern generator to the arial input.

Set Patt.gen. to 475,25 MHz, colourbar, stereosound,

PAL B/G (for France SECAM l).

Put the Mainsswitch : on.

In normal conditions the set will start with the Red LED

Remark :

In normal operation the

Red LED lights in half

intensity and in

standby-mode the LED

lights in full intensity

blinking for one second in full intensity, one time then

after a few seconds more in half intensity while the

picture and sound will appear.

15L9.1A

Does the red LED

blink for one second in

full intensity, one time

?

Yes

Do picture and sound

appear properly

?

No No

light in full intensity

continuously

?

Does the red LED

No

Yes

A

Yes

Ensure communication

with the RC,

Check/Replace

(A8);IC7680

Put the set into the

Service Default Mode
either via the DST or by
pressing the buttons on

the RC in the following

order :062596<MENU>,

or via the service pins

An error code is

indicated by the blinking

LED via the SDM.

n-times blinking means

error n.

See also chapter 5.5 for

detailled information

Is the Power supply

hicking ?

Yes

1 11 D

The load of the power supply

is too high.

Isolate each branch of the load

one by one, until the hicking

disappear.

Continue with the fault finding

for the branch, which causes

the overload.

The branches are:

(A1);AudioSupply

+VBATT

MainSupply

Vaux

1 11 1

No No

1 17 3 1 11 1

Any secondary

voltage present ?

Yes

Check

(A7); <C1>,<C4(reset)>

3V3,

Check/Replace

No

(A1); <P1>

present?

Yes

(A1); <P2>

startpuls
present?

Note: If F1500 is defective, then also check R3503

(A1);<P3>

No No

Voltage

present?

Check/Replace

(A1); SW0231,F1500,D6505

(A1);D6540,C2540,D6510,

TS7603,TS7604

IC7600

X1660

(A8);LED6690

Yes

1 11 A

Yes

Check/Replace

1 11 1

Check/Replace

(A1);TS7518,L5552

No

(A1); voltage on

TR5545 pin9

(A1);IC7520

R3525

present ?

Yes

1 11 A

Check/Replace

(A1);L5540,D6540,C2540

Vaux,F1572,L5573,D6560

IC7581

Note 1:

IRIS SYMPTOM CODE

Check/Replace

R3510,R3529

Set is OK

Check / correct Options

list via CSM see
chapter 5.5 of this
manual

for details

No

Is there an error

indication ?

Yes

B

Condition

code

1 11 A

1 11

Main symptom

Note 2:

A

Extended symptom

code

(A1) means Drawing A1
<P1> means Test point P1

CL 86532104_034.eps

code

190299

6 Fault finding trees, diagrams and overviews

A

Ensure communication

with the RC,

Check/Replace

(A8);IC7680

Put the set into the

Service Default Mode
either via the DST or by
pressing the buttons on

the RC in the following

order :062596<MENU>,

or via the service pins

No

An error code is

indicated by the blinking

No picture

(Colour missing)

No Menu

Black screen

Sound OK

(B);

Heater / Filaments

OK

?

1 13 0

Check / Replace

(A2);L5480,Conn.0220

No

(B);Conn.0244,R3341,

R3342,CRT-Socket,

L5342,CRT

LED via the SDM.

n-times blinking means

error n.

See also chapter 5.5 for

detailled information

Yes

(B);VG2

OK

?

1 13 0

Check / Replace

No

(B);R3343,C2343

Adjust VG2

(A2);TR5445,

CRT

Is there an error

indication

?

Yes

1 13 0

Yes

Check/Replace

If the mainsupply or

EHT is missing, then

the error message may

(A3);<F3>,<F4>

OK

?

No

(A3);IC7401,

D6401.C2403,D6402

not be reliable. So in

this state check/replace

the

components of the

Yes

1 13 0

mainsupply and EHT in

the first place see

schematics ;

(A1), (A2) and

(A4);IC7250-D <S2>

(A6);<V1..V4>

<V6,V7,V8>

OK

Yes

No

Check/Replace

(A6);IC7250-B/C

1 13 0

B

(B);<V11..V16>

OK

No

Check/Replace

(B);Conn0245,IC7330,

CRT Socket

Picture OK

Menu OK

NO Sound

(l,r,l+r)

NICAM/2CS/

Multimono

(MSP3415D)

(A5);<I2>,SIF

Ok

?

Yes

(A10);

<A10>..<A13>

OK

?

Yes

(A12);

<A16>..<A18>

OK

?

Yes

1 15 0

Check / Replace

(A13);Conn.0234,

Conn.0215

Speakers

16L9.1A

1 15 0

Check / Replace

No

No

No

(A5); IC7250-A,

TS7266

1 15 0

Check / Replace

(A10); IC7833

Yes

1 15 0

Check / Replace

(A11);TS7904..TS7910

(A12);IC7050..IC7053

No

1 15 0

BTSC

(TDA9851)

(A5);<I4>

OK

?

Yes

(A9);<A2>,<A3>

<A6>,<A7> OK

?

Check / Replace

(A9);IC7821

IC7822

No

NO Picture
NO Sound

Menu OK

1 12 0

Check / Replace

(A5);Antenna,

VT_Supply,D6008,

(A6);X1205..X1208

Sound and Picture

from external source

OK ?

Yes

1 12 0

Check / Replace

Tuner1000

1 11 A

No

Deflection not OK

Pictures are not

symetrical and unstable

C

Check / Replace

IC7250

1 13 0

Check/Replace

(B);CRT

Yes

CL 86532104_035.eps

190299

6 Fault finding trees, diagrams and overviews

C

Horizontal section

Picture unstable

horizontally.

Picture width too

small.

No sync.

E/W not ok

(A4) ; <S2>,

<S5>

OK

?

1 53 0

No

Check / Replace

(A4);IC7250

Vertical section

Vertical picture is

too small or unstable

(A4);<S3>,<S4>

OK

?

Yes

No

17L9.1A

1 53 0

Check / Replace

(A4); IC7250

1 17 8

Yes

(A2);<L1>,

<L2>,<L3>,

<L4>
OK ?

Yes

1 33 A

Check / Replace

(A2);L5457,C2458,

C2457,L5463,

L5465,L5470

L5471

1 53 0

Check / Replace

No

(A2);TS7461,TS7460,

TS7470,

(A3);<F3>,<F4>,

<F5> OK

?

Yes

1 17 8

Check / Replace

(A3);Vertical defl. coil

C0222

No

Check / Replace

(A3); IC7401 ,

R3401..R3403,

R3409

D6401,C2403

CL 86532104_036.eps

190299

6 Fault finding trees, diagrams and overviews

B

18L9.1A

ERR 8

Yes

1 17 8

uP Internal RAM

error

Check / replace

(A7);IC7600

No

ERR 2 ERR 7

Yes

1 11 D

High beamcurrent ,
E/W and Horizontal

Protection.

- When the High

beamcurrent protection
is started, fly-back lines
will be visible for 15 sec.
before the set is really in

protection.

- When E/W or

Horizontal protection is

started, the set will hicc-

up for 4sec. before the

protection is really

activated.

- During E/W or

Horizontal protection

the EHT will not be able

to turn on and so the

VlotAux5V to the Tuner

and Sound IC is not

available. As such

ERROR 4 and ERROR

11 will be reported too.

Message :

ERR 11 4 2 0 0
Check/Replace

(CRT);R3340,

+200V supply

or

E/W,Horizontal Prot.

(A2);Conn.0221

No

Yes

1 17 8

General I2C error.

Check SCL and SDA

line of all units for

shortcircuit to ground or

to each other.

The Error code can

only be read by

putting the TV set into

the SDM mode. The

LED will blink 7 times.

Check / replace

(A5);Tuner1000 pin4,5

(A6);IC7250-C pin7,8
(A7);IC7600 pin49,50

(A7);IC7601 pin5,6

(A9);IC7821 pin1,24

(A10);IC7833 pin9,10

Replace the item, which

causes the error.

ERR 5

or 6

Yes

1 11 A

BIMOS error.

The error is detected,

because there is no

communications on I

of the BIMOS

Message :

ERR 4 6 0 0 0

CheckReplace

(A4,A5); the

+8VBIMOS and the I

lines pin7,8 of IC7250

NoNo

ERR 1,

3, 12

No

ERR 4
and/or

11

Yes

No

ERR 10

Yes

1 17 X

+5 V Protection

ERROR 1 ERROR 3

Check

EEPROM error

(A2); +VLotAux+5V

2

1 17 8

2

C

X-Ray/Over-voltage

Protection.

(USA version only)

1 11 D

Vertical / Frame

Protection.

ERROR 4

ERROR 11

- When I

signals or the

+5D are missing

on IC7601 the set

can function, but

C

will not be able to

- When the X-Ray

protection is started, the

2

C

set will hicc-up until the

voltage at pin 50 of

IC7250 becomes >3.9

Volts. At the voltage of

3.9 V the set is put in
protection mode.

- During x-ray protection
the EHT will not be able

to turn on and so the

VlotAux5V to the Tuner

and Sound IC is not

available. As such

ERROR 4 and ERROR

- Before the proctection
is really actived, a

horizontal line will be

visible for 3 sec.

- During Vertical /

Frame protection the

EHT will not be able to

turn on and so the

VlotAux5V to the Tuner

and Sound IC is not

available. As such
ERROR 4 and ERROR
11 will be reported too.

Message :

ERR 11 4 3 0 0

17 X

1
Fault in audio section

In this situation the set

turns on without sound.

Message :

ERR 4 0 0 0 0

Check/Replace

(A10);+VlotAux+5V,

IC7833 pin9,10.

1 12 0

I2C Tuner error

- It is possible

that during +5V

protection Error 4

will be reported

too

Message :

ERR 11 0 0 0 0

CheckReplace

(A5);Tuner1000

store any data.

Message :

ERR 10 0 0 0 0

Check/Replace

(A7); +5VD

IC7601 pin 5,6

11 will be reported too.

Check / replace

(A3);IC7401,

C2403,D6401

Conn0222

ERROR 9

New micro controller or
EEProm.Default values

ERROR 12

were loaded. Re-align
the set. If the problem
persists, then IC7601

is defective

Black current calibration loop instable (protection)

CL 86532104_037.eps

190299

6 Fault finding trees, diagrams and overviews

POWER SUPPLY

A1

for 140V V

6550

for 130V V

55725575

55725575

5572

5572

6560

BATT

5577

2551

BATT

6570

1573

6590

2.5A

6590 6582

1573

2.5A

6580 6582

6580

1572

T1A

2561

+VBATT MAIN SUPPLY

5551

A1

ON to

3543

discharge

3546

circuit

6542
3571

AUDIO SUPPLY

2571

2571

2577

9509

2577

V

AUX

ON to

A1

3585

AUDIO AMPLIFIER

A12

V

AUX

AUDIO SUPPLY
To 3950

HORIZONTAL DEFLECTIONA2

V

AUX

CONTROL

A7

V

AUX

4654 3632

TUNER + VIDEO IF

A5

V

AUX

STAND-BY

To anode 6449

3639

V

AUX-1

7251

3 2 +8V BIMOS

1

STB

CIRCUIT

5545

POWER

TRAFO

SPMS LOT

5550

15

5576

16

for 2x3 WATT / 5 WATT AUDIO
11

for 2x2 WATT AUDIO
11

for 2x1 WATT AUDIO

1571

10

T1A

for 1x1 WATT AUDIO

1571

10

T1A

5573

14

7603

3633

3657

+8V AUDIO

5202

7254
7256

6601

-/C3V9

6606

-/C4V7

3V3

+5D

19L9.1A

FRONT CONTROL

A8

+5D

SYNCHRONISATION

A4

+8V BIMOS

VIDEO PROCESSING

A6

HORIZONTAL DEFLECTION

A2

5445

3453

MAIN SUPPLY

2450

5451

ON to

A2

3462
3482

3 EHT

52

7 filement

11

6

9

FOCUS
VG2

3485

6485

6487 3442

6490

6486

VIDEO SUPPLY +200V

2485

5480

3488

V

LOT AUX +50V

VT_SUPPLY

2487

3491

V

LOT AUX -11V

2489

3492
3486

V

LOT AUX -11V

2486

3487

ON to

E/W Circuit

and 7481,7482

0220

4

A2

CRT

B

EHT
FOCUS
VG2

0244

2

4

TUNER

A5

VERTICAL DEFLECTION

A3

POWER SUPPLY

A1

ANODE CRT
FOCUS
VG2

3340

2340

3341

3342

VT_SUPPLY
6008

-/C33

V

LOT AUX +50V

V

LOT AUX -11V

V

LOT AUX +11V

+200VA

to CRT
filement

to (9-1000)
TUNER

to 9401

to 4-7401

to 2-7401

to DEGAUSSING

IIC BUS INTERCONNECTION DIAGRAM

VIDEO

CONTROL

A7

7600

SAA5565

µC

TUNER +

A5

3651

50
49

SDA

3652

SCL

3655

3654

56

7601

ST24W0481

EEPROM

VIDEO/IF

3001

3000

54

1000

TUNER

A6

PROC.

3248

3247

78

7250

TD8844

VIDEO
PROC.

BTSC

A9

DECODER

3828

3827

24 1

7821

TDA9851

BTSC

DECODER

NICAM+

A10

2CS DEC.

3842

10 9

MSP3415D

NICAM

DECODER

3841

7833

5821

2843

+8VA

+8V BIMOS

NICAM + 2CS DECODER

A10

+8VA

SMART SOUND

A11

+8VA

BTSC DECODER

A9

+8VA

BTSC DECODER

A9

7823

TUNER + VIDEO IF

6488

8

13

2

V

LOT AUX +5V

7480

3490

A5

A10

NICAM + 2CS DECODER

REAR I/O CINCH

A14

5822

5000

5831
5832

V

LOT AUX +5V

2-7821

+5V

to 6-1000
(TUNER)

+5VA
+5VB

to 5101

CL 86532104_063.eps

180399

6 Fault finding trees, diagrams and overviews

REAR I/O CINCH (AP)

A14

VIDEO
OUT

LEFT
MONITOR
OUT

RIGTH AUDIO OUT R

VIDEO
REAR 1

LEFT
REAR 1
RIGHT

SVHS

VIDEO
REAR 2

LEFT
REAR 2
RIGHT

A5

VLOT

AUX+5V

1000

SDAA7

A7 SCL

VT-SUPPLY

A2

A1

170-250V SINGLE RANGE

7520
MC44603A

14

7134

VIDEO OUT

AUDIO OUT
L/MONO

EXT 1 VIDEO

EXT 1
AUDIO L

EXT AUDIO
MONO

Y

EXT 2

124

5

3

C

VIDEO/Y
EXT 2 C

EXT 2 AUDIO
L/MONO

EXT 2
AUDIO R

TUNER / IF /
VIDEO DETECTOR

5000

667

TUNER

5

I6 I5

M

49

1

33V

6008

11

POWER SUPPLY

1500

T 4 AL

BUFFER

CURRENT

SENSE

5500
5502

P3

1

3
7

8

3520

2

3528

3578

0231

OSC

2.5V

4

HOT
GROUND

3577

AC

I1

V

AUX

7254
7252

6505

GBU4J

5002

40,4

A6

A10

A10

A6

A9

A9

A6

A6

A10

A10

RF-AGC

7251

LM 317T

1

STD BY

CIRCUIT

DC

2540

3525

NICAM + 2CS DECODER SMART SOUND

A10 A11

SIFA558

A5' MONO
A14,E FRONT/EXT 1/AUDIO L
A14,E FRONT/EXT1 AUDIO R
A14 EXT 2/AUDIO L/MONO
A14 EXT 2/ AUDIO R

SIDE AV

E

1003
1004

48
49

38,9

54

23

2508

P2
G

7518

STH8NA60FI

3518

6540

5

4

EXT2

VIDEO/Y

AUDIO R

EXT1

AUDIO L (MONO)

7250-A'
TDA
8844

P7

+8V AUDIO

5201

STAND BY A7

P1

5545

5
4
3
2

D

S

9
8

7581

TCDT1101G

EXT1

3

1

5006

VIDEO

12

10

11

12

13

14
15

16
17
18

A6

A14

A14

4

DET

5575

5573
5550

5576

2

7833
MPS 3415D

DEMODULATOR

NICAM

2CS

FM

AM

55
52
53

SWITCHING

49
50

A14

A5'

SIF

B

+8V BIMOS

7266

I2

3210

+8V BIMOS

5572

CIRCUIT IS VALID FOR
2X2W EXECUTION
(FOR OTHER EXECUTIONS SEE
CIRCUIT DIAGRAM A1 AND THE
DIVERSITY LIST)

6560

6550

3585

10

9

SDA

SCL

A7

A7

AUDIO FM DEMODULATOR

4,5 MHz

1001

5,5 MHz
6,0 MHz

1002

6,5 MHz

DUAL / MONO

3216

3206

7252

1573

6590

2,5A

1572

T1A

5577

1

3

2

7570

TL431CLP

VBATT ADJ.
(OPTIONAL)

A15

A10

29

LEFT OUT
A11

RIGHT OUT

28

A12

37

OUT L

A14

36

5202

1200

1201

1203

5.5MHz

6MHz

4.5MHz

A14

OUT R

A13

I

7250-A
TDA 8844

1

I3

A7 A14

CVBS_INT

7253

P2PLL/MTRAP

6582

2571

P5

2561

P4

2551

5551

3571

3572

FM

AUDIO

DET

SIF

A10

AUDIO
SUPPLY

P6

3211

A5

VAUX

+VBATT

MAIN
SUPPLY

A

B

(ONLY FOR BASIC SET)

MONO

A5

BASS

TREBLE

A7

BASS

TREBLE

A7

(ONLY FOR MONO SETS)

7001

55

2

A6

CVBSTXT

A7

EXT1

VIDEO

A14

V1

A4

7904 : 7906

-

PROC.

LEFT

MAIN AUDIO L

7908 : 7910

-

PROC.
RIGHT

MAIN AUDIO R

AUDIO OUT

15

I4

EXT AUDIO

A14

MONO A11

FM/AM A9

VIDEO PROCESSING

A7
A7
A7

7258

7250-B
TDA8844

17
13

P2LLP
P0SYS1
P1SYS2

A14

A14

EXT2C

38

10 11

VIDEO OUT

CVBS

Y/C

SWITCH

35 34

1205

4.43

SYNC

S1

3420 3424

7250-D
TDA8844

SYNC

41

G

50kHz

3423

EHT INFO

A2

H+LYBK

A2

EH T INFO

A2

20L9.1A

AUDIO AMPLIFIER

A12

7950 TDA 7057 AQ (2X3W) OR
7951 TDA 7053 A (2X1W) OR
7952 TDA 7052 B (1X1W) OR
7953 TDA 7056/N2 (2X2W)

BTSC DECODER

A9

7821
TDA 9851

FM/AM 7
A5'

A14,E

EXT2

42

50

A1

VIDEO/Y

1206

3.58

+8V BIMOS

G

16kHz

E/W

VERT.

DRIVE

DECODER

24 1

A5 A4

A7

Y-DELAY

PAL/NTSC

SECAM

DECODER

1207

3.575

37

40

45

47
46

BTSC

SCL

SDA

A7 A14 A14

R-Y
B-Y

3422

S2

S4

S3

A17

A19

A18

12

A2

13

A3

BASE
BAND

DELAY

1208 3.579

H-DRIVE

H-DRIVE

VDRIVE­VDRIVE+

HEADPHONE

A13

A16

L+

L-

R+

R-

FRONT EXT1L

28

Y

30

U

29

V

HORIZONTAL DEFLECTION

A2

7461

L1

BF819

EW-DRIVE

EWD-DYN

A2

VERTICAL DEFLECTION

A3

F2

L+

L-

R+

R-

12
14

FRONT E XT1R

V2

V3

V4

MAIN

SUPPLY

3462

3406

3408

0232

7822
HEF 4052

1
2

SELECT
910

7250-C
TDA 8844

27

RGB

MATRIX

31
32

RGB

INPUT

23 24 25 26

R G B

R-TXT OSD

G-TXT OSD

A7

7460

5461

BU1508DX

L2

STP16NE06

3473

G

3474

VLOT AUX +11V

7401

TDA9302H

F1

LEFT OUT
3

A6

13

A7

RIGTH OUT

V9 V10

B-TXT OSD

7470

2
7
1

3407

0234

L+

L-

R+

R-

A7A7

SCL

SDA

8

7

R

CONTROL

G

CATHODE

B

CALIBRA-

EHT INFO

PROC.

FB-TXT OSD

D
S

6401

+

OP. AMP

-

4

3

2

1

RGB

TION
22

7263

L3

L4

2403

6

4

VLOT AUX

-11V

18

V8

L

A

B

R

21

G

20

B

19

EHT INFO

MAIN

SUPPLY

LINE

OUTPUT

CIRCUIT

DRIVE

6402

3

5

R

V6

V7

E/W

F5

FRONT

A8

CONTROL

6690
LTL-307 X

7680
GP1U 280P

1

LOCAL

KEYBOARD

Vaux

7603

STAB

7604

uPreset

FORMER

V5

0243

A2

3453

F4

VFLYBK

VLOT AUX+50V A2

0 222

1

2

3401

LED

5451

0221

A7

IR
RECIEVER

A7
IR

SAM

RESET

B

0245

1
2
3
4
5
6

+200VA 3340

2340

A7

3V3

A7

CRT

1
3

HOR­DEFL­COIL

VERT.
DEFL.
COIL

SAM

V11

V12

V13

A7

A12
A12

A7

A11

A5

A11

A15

KEY BD 1
KEY BD 2
KEY BD 3

A2

A5
A8

M28
M29

A6

1
2
3

BC-INFO

5445

CONTROL

BUZZER
VOLUME +
EEPROM (PIN 7)
BASS
DUAL/MONO

TREBLE

AV-MUTE/EXT2FUNC

7505

STBY ON

+PROTN

STANDBY
LED

CVBS TXT

+200VA

7330

TDA 6107Q

9
8
7

5

EHT-INFO

0244

1 2 3 4

0220

A B C

FOCUS VG2

3481

10

3448

6

6490
6485

5

6487

11

6486

9

6488

8

12

6463

7

5

SDA
SCL

RC5

X - TAL
12MHz

OSD

_

A5,A6,A10
A5,A6,A10
A6

A7
A8

A7

7609

7608

HFLYBK

A6
A6
A6
A6
A5,A6

1

FOR

2

COMPAIR

3

A2 A4
A6

A2
A4

A7

A5

A2
A7

M25
M24

SDM

VFLYBK

A

B

C

180399

A3

A2

uC

RESET

VSYNC
HSYNC

R

G

B

2487

7480

L78MO5

PROT.

CIRC.

7481 7482

7601 ST 24W

P1

VDS

R
G
B

2489

2485

L9

2486

1

52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30

29
28

27

3442

2

EEPROM

4

C2

C3

SYS1/AM

P1SYS2

C4

+3V2

RESET

C1

+3V3

VD
HD

FB_TXT_OSD

R_TXT
G_TXT_OSD
B_TXT_OSD

LLP\M TRAP

0267

SDA
SCL

CRT

25kV

2

G

V

3

STBY ON
+PROTN

EHT

V FOCUS

MAIN SUPPLY

EHT INFO

EWD_DYN

L5

VLOTAUX-11V A3

L6

VIDEO SUPPLY

L8

VLOTAUX+50V

L7

VT_SUPPLY

VLOTAUX+11V A3

L10

VLOTAUX+5V

2484

FILE MENT

EHT INFO

86532104_064.eps

HFLYBK

7600
SAA 5565

1
2
3
4

P2

5
6
7
8
9

10

P3

11
12
13

14
15
16

17
18

P0

19
20
21

22
23

CVBS

24
25
26

V14

R

V15

G

V16

B

3341

3342

3446

3449

3491
3492

3485

3488

3486
3487

3490

3465

6 Fault finding trees, diagrams and overviews

21L9.1A

1V / div DC

20µs / div

S2 HDRIVE

0.2V / div DC
20µs / div

S3 VDRIVE+

1V / div DC

5ms / div

S4 VDRIVE-

1V / div DC

5ms / div

I2

0.5V / div AC
20µs / div

1V / div DC

10µs / div

1V / div DC

20µs / div

V3

0.5V / div AC
20µs / div

0.5V / div AC
20µs / div

V5

0.5V / div AC
20µs / div

V6

0.5V / div AC
20µs / div

V7

0.5V / div AC
20µs / div

V8 I5 SCL TUNER

2V / div DC

20µs / div

V9 SCL 7250 I6 SDA TUNER

1V / div DC

10µs / div

V10 SDA 7250V1 CVBS-INT

C2 SDA uPS1 H FLYBK

1V / div DC

20µs / div

C3 SCL uPV4

1V / div DC

10µs / div

V11 R

1V / div DC

10µs / div

V12 G

1V / div DC

10µs / div

V13 B

1V / div DC

10µs / div

V14

50V / div DC

10µs / div

V15

50V / div DC

10µs / div

V16

P1

50V / div DC

5ms / div

P2

2V / div DC

10µs / div

P2

2V / div DC

10µs / div
P3 15V DC
P3 12V DC
P4 138V DC

138V DC

P4
P5 11.8V DC
P5 9.8V DC
P6 16V DC

13.8V DC

P6
P7 8V DC

HDRIVE

L1

0.1V / div DC
20µs / div

2V / div DC

20µs / div

L3

L5 V

LOT AUX-11

2V / div DC

5ms / div

LOT AUX+11

L9 V

2V / div DC

5ms / div

L1 0.3V DC

A10 LEFT OUT A19 L-

0.2V / div AC

0.2ms/div

A11 RIGHT OUT

0.2V / div AC

0.5ms / div

A12 AUDIO OUT L/MONO
L3 138V DC
L6 190 V DC
L7 32.5V DC

28V DC

L7
L8 46V DC

30V DC

L8

0.5V / div AC

0.2ms / div

A13 AUDIO OUT R

L10 5V DC

0.5V / div AC

0.5ms / div

F1 VDRIVE + A14 SCL 7833

0.5V / div DC
5ms / div

F2 VDRIVE-

0.5V / div DC
5ms / div

F3L2

10V / div DC

5ms / div

F4 V FLYBK

1V / div DC

10µs / div

A15 SDA 7833

1V / div DC

20µs / div

A16 R+

0.2V / div AC

0.5ms / div

A17 R-

0.2V / div AC

0.2ms/div

COMPAIR

MAIN PANEL COMPONENT SIDE

1

24

A19
A18

0267

A4

A1

A2

7950

1

2

8

11

10

12

13

1

11

3

TUNER

1

7821

7

12 13

A16
A17

V3
V4

S2
S1

S3
S4

A5

SDM

A3

29
30

40
41

46
47

56

I1

M25
1

7601

4
M24 ( )

A14
A15

A11
A10

28

V2

21

V5

19

V7

V8

18
15

I4

13

V1

8

V10

7250 TBA 8844

7

V9

6

I2

1

I3

CRT PANEL TRACK SIDE

27

26

7600

42

C1

49

C3

50

C2

52

1

8

5

P5

1

64

9
10

7833

28
29

32

33

6402

F4

F2

3406

F5

3442

L8

3403

P6

3402

3508

7461

L10

3401

M29 M28

6582

B

E

OUT IN

L9

3486

SAM

HOT GROUND
BORDER

P4

L1

C

L6

3485

GND

7480

3491

L5

F1

7 1

7401

62

98

7520

16 1

P3

2508

P2

G
D

P1

3509

G
D

L4

S

7470

L2

B

C

L3

E

7460

LOT

7518

S

0.5V / div AC
20µs / div

V2

0.5V / div AC

20µs / div

1V / div DC

20µs / div

C1

1V / div DC

0.5µs / div

50V / div DC

10µs / div

P1

50V / div DC

5ms / div

100V / div DC

20µs / div

L4

5V / div DC

5ms / div

2V / div DC

5ms / div

F5

0.5V / div DC
5ms / div

0.2V / div AC

0.5ms / div

A18 L+

0.2V / div AC

0.2ms / div

= 0V

CL 86532104_020.EPS

190299

V13
V12
V11

0245

6

1

7330

9

1

V14

10

9

11

8

7

V15

6

5

4

0244

14

V16

12

CL 86532104_018A.EPS

260299

7 Electrical diagrams and print lay-outs

7 Electrical diagrams and print lay-outs

1234567891011

POWER SUPPLY

A

100-120V SINGLE RANGE (USA)
170-250V SINGLE RANGE (EURO)
100-250V FULL RANGE (A/P,LATAM)

B

C

D

E

F

G

H

MAINS_IN_B

9500

*

0211

B2P3-VH

MAINS_IN_A

3534

15K

2

1

3520

82K

2520

82p

2531

1n

3536

18K

3532

6K8

2532
470p

2
4

4501

2534

RES

0231

*

5689

SDKE

9501

*

4M7

3542

2M2

3502

3530

3529

2529

7520
MC44603A

0.2V
8

(0V)

9 2

(2.6V)

2.6V
10

15

2.5V

(2.5V)

0.7V
12

(1.7V)

14

(2.5V)

2.5V

2n2

2533

13

2.9V

(1.9V)

-V NORMAL OPERATION

(-V) STANDBY OPERATION

*

1500

1

T4E 250V

3

3510

*

33K

3K3

6510

BZX79-C20

68R

100n

DEMAGNETICATION

Vdem in

Sync
C

R standby

R standby

VOLTAGE
FEEDBACK

E/A OUT

MANAGEMENT

Vdem out

Iref

OSCILLATOR

T

F

P

2.5V

ERROR

AMP

FOLDBACK

FOLDBACK INPUT

B2P3-VH

DEGAUSSING COIL

(REDUCED FREQUENCY)

0212

2501

*

5

*

33n

BZX79-C30

2500

3528

100R

Rref

Vosc prot

Vosc

Iref

STANDBY

CURRENT SENSE INPUT

(1V)

1.2V

6501

470n

REFERENCE

1

2

6500

*

3505

*

DSP

9507

23

5500

4

1

DMF-2405

9508

3525

33R

10K

3537

16

Vref

Iref

BLOCK

7

0.2V
(0.1V)

1K

3516

2504

3501
470R

9502

*

5502

2

3

*

14

DMF28

9503

*

2517

330p

2524

Vref
enable

INITIALIZATION BLOCK

Latch
Reset

THERMAL

SHUTDOWN

CURRENT
SENSE

Dmax & SOFT-START

Iref

2n2

1n

SUPPLY &

QSet

CONTROL

2505

2n2

*

GBU4J

2502

2n2

9505

*

3506

RES

3507

*

2R2

1K

3517

6508

BYD33J

1.2V

14.8V

BUFFER

Vovp out

Vref

OVERVOLTAGE

MANAGEMENT

Soft Start & Dmax

11

2.4V

(2.4V)

1u

2530

6505

6514
BZX55-C18

(0.1V)

0V

UVLO1

OVERVOLTAGE

PROTECTION

UVLO1

Vref

1

2

P2

5552

(1V)

(12.6V)

P3

14.7V

(12.1V)

0213

6507

BYD33J

Vcc

OUTPUT

Vcc

For ITV

9506

*

3515

*

t

B57237

307V

(313.7V)

STH8NA60FI
7518

1.2V

(0.1V)

(0V)

1

18V

Vc

3

GND

4

6

2.2V

(1.8V)

22L9.1A

F1 E11

3596 A8

0211 B1

3597 A9

0212 A3

3598 A9

0213 A4

3599 B9
0231 B1
0241 E11
1500 B2
1571 C8
1572 E10
1573 C9
1580 A7
2500 B3
2501 B2
2502 B4
2504 A3
2505 A4
2507 C6
2508 B5
2510 C6
2511 C6
2517 C3
2518 C5
2520 E1
2521 F5
2522 G5
2524 C3
2529 D1
2530 H4
2531 F1
2532 F1
2533 G1
2534 G1
2540 F5
2541 B9
2542 B11
2545 G7
2550 D10
2551 D11
2561 E10
2562 D8
2564 D9
2565 D9
2571 C10
2572 D8
2573 F8
2574 F8
2575 E8
2576 F7
2577 C10
2586 A9
3501 B3
3502 C1
3503 A6
3505 B3
3506 C4
3507 C4
3508 D10
3509 B6
3510 C2
3511 C6
3512 H5
3513 G5
3514 D5
3515 B5
3516 H3
3517 C4
3518 D6
3520 E1
3521 D5
3525 C3
3528 D2
3529 D1
3530 C1
3532 F1
3534 G1
3536 F1
3537 E3
3542 C1
3543 B9
3544 B9
3545 B10
3546 B10
3547 A10
3570 F9
3571 F9
3572 F10
3573 F9
3574 F8
3575 F8
3576 E8
3577 F6
3578 F7
3579 F9
3585 E9
3592 B8
3594 A8
3595 A9

4501 G1

4999 F11

5500 B3

5502 B3

5516 D7

5518 C6

5521 G5

5540 E6

5545 C7

5550 D9

5551 D11

5552 C4

5572 C9

5573 E9

5575 C8

5576 D9

5577 D10

6500 B3

6501 B3

6505 B4

6507 D4

6508 D4

6510 C2

6511 C6

6512 D6

6513 D6

6514 C4

6515 B6

6517 B6

6540 E6

6542 B9

6543 B10

6550 D10

6560 D9

6570 C10

6580 C10

6582 C11

6584 A8

6585 A8

6590 C10

6591 A8

7518 C4

7520 E2

7542 B10

7570 G8

7581 E7

7590 B8

7591 B8

7592 B9

9500 B1

9501 C1

9502 B3

9503 C3

9505 C4

9506 B5

9507 B3

9508 C3

9509 C11

9510 E5

1K

BAS216

7542

BC857B

0V

33K

2m2

AudioSupply

Vaux

Vaux_1

2542

9509

*

6582

*

EGP20DL

1m

P4

2551

F1

1

4999

For T esting

VlotAux+11V

Reset

47u

16.7V

AudioSupply

P6

140V (IF 5550 MOUNTED)
130V (IF 5576 MOUNTED)

+VBATT

5551

MainSupply

27u

140V (IF 5550 MOUNTED)
130V (IF 5576 MOUNTED)

47u

Vaux

11.5V

P5

TO F1A

0241

1

2

3

4

5

A7-1

A3-49

A6-49

A

B

C

D

E

F

G

3503

+t

*

ZPB

309.7V

RES

33K

*

330u

2508

0V

3514

3521

820K

2521

2522

5521

3513

180K

330R

9510

2540

3n3

3n3

2U2

2518

3518

15.6V

100u

6515

BYD33J

RES

2507

470p

0R22

6540

BAV21

1n5

2511

470p

5518

6511

6512

6513

6517

BYD33J

RES

BYV95C

1N5062

1N5062

3511

5540

4U7

3509

P1

1n5

RES

2510

1K

5516

3577

10K

HOT GROUND

P1

100MHZ

3578

1580
G5P

23

5545
W8019

9
8

5
4

3
2

7581

TCDT1101G

15.2V
(13V)

5

42

2.2V

(2.9V)

1K

6n8

2576

14

13.6V

BC847B

10
11
12
13
14
15
16
17
18

1

11V

10V

3575

2545

1n5

3594

6584

1N4148

6585

0.2V
1N4148

7590

0V

*

MRT

T1A

1571
5575

*

100MHZ

(0V)

(7.9V)

100R

9.6V

1

(7.4V)

TL431CLP

7570

2

MainSupplyGnd
AudioSupplyGnd

7591

BC847B

3576

2573

33n

3

2.5V

22K

P2

0.7V

(2.5V)

*

6591

3596

3592

2572

2562

2575

2574

3595

BAS216

10K

3597

2V

10K

100MHZ

100p

220p

5573

100MHZ

100n

3574
33K

68K

100R

7592

BC847B

5572

*

100MHZ

*

100MHZ

FOR CINCH ONLY

= 0V

220u

2586

3599

5550

5576

2565 2564

1u

EGP20DL

3571

*

160K

3573

2K0

22K

*

6560

P2P1

1573

2.5A
MRT

3579

3598

10K

1u

3585
100R

3543

220K

27K

3544

NOT FOR USA

+VBATT

1K

*

+VBATT

6542

2541

3570

*

*

EGP20DL

EGP20DL

12K

SB140

BY229X-800

3545

BAV21

3u3

3546

47K

6580

6570

6590

AudioSupplyGnd

2550
470p

6550

MRT
T1A

1572

3572

VBATT

RES

ADJ

P3 15V DC
P3 12V DC
P4 138V DC
P4

33K

11.4V

13V

(13V)

*

5577

2571

Vaux

3547

6543

(10.4)

(0V)

CRT_DISCHARGE

2m2

2577

*

3508

2561

For ITV

138V DC

P5 11.8V DC

3512

15K

50V / div DC

5ms / div

50V / div DC

5ms / div

2V / div DC

10µs / div

2V / div DC

10µs / div

P5 9.8V DC
P6 16V DC

13.8V DC

P6
P7 8V DC

FOR ITEM NR.MARKED WITH
REFER TO DIVERSITY TABLE

CL 86532104_046.eps

010399

H

1234567

8 9 10 11