Sanyo CE27LC6BK-c Schematic

Part No. SKSM0846 N2WLD/N2YLD MARCH 2006

Colour Television Service Manual

Give complete "SERVICE REF. NO." for parts order or servicing, it is shown on the rating sheet on the cabinet back of the TV set.

Note This TV receiver will not work properly in foreign countries where the television transmission system and power source differ from the design specifications. Refer to the specifications for the design specifications

CE27LC6BK-c CE32LC6BK-c

Contents

Safety precautions/Specifications ..................................................................................................................2

Service Mode/Option settings ........................................................................................................................3

Block Diagram ................................................................................................................................................4

Power Diagram ..............................................................................................................................................5

IC Descriptions............................................................................................................................................6~7

IC Block Diagrams..........................................................................................................................................................................8~12

Cabinet Parts List ........................................................................................................................................13

Cabinet Disassembly....................................................................................................................................14

Pin description of semiconductors................................................................................................................15

Part Description and reading of schematic diagram ....................................................................................16

Electric Parts List....................................................................................................................................17~32

Please use Schematic Diagram SKP20572 inserted with this Service Manual.

Model CE27LC6BK-C

CE32LC6BK-C

Service Ref. No. CE27LC6BK-C-00

CE32LC6BK-C-00

PRODUCT CODE: 111376231 (27”)

111376332 (32”)

ORIGINAL VERSION:Chassis No.UK4-A

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N2WLD/YLD

SAFETY PRECAUTION

PRODUCT SAFETY NOTICE

SPECIFICATIONS

Product safety should be considered when a component replacement is 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 designated 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 .

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 cer-

tain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, isolation resistor-capacitor networks 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.

Power source AC 220~240V, 50Hz Television system System I, B/G, D/K, L.L’ Colour system PAL/NTSC4.43 (PAL/NTSC4.43/NTSC3.58 IN AV MODE) Receiving channel UHF: #21~69

VHF: E2-E12, F2-F10, R1-R12 Aerial input impedance 75ohm Rear AV terminal

AV1: CENELEC standard

INPUT: Composite video, RGB and Audio L/R

OUTPUT: TV-output with composite video and audio L/R

AV2: CENELEC standard

INPUT: Composite video, RGB, S-VHS and Audio L/R

OUTPUT: Monitor output with composite video and Audio L/R

AV3: CENELEC standard

INPUT: Composite video and Audio L/R

Side AVterminal

AV4: RCA Jacks

INPUT: Composite video and Audio L/R

AVterminal

AV5: INPUT: Component (Y,Pb,Pr)

HDMI

INPUT: HDMI GROUP Standard

Headphone Socket Mini Jack

CE27LC6BK-C CE32LC6BK-C

Sound output(Continuous) 10W x 2 10W x 2 Contrast Ratio 900:1 1000:1 Display Resolution 1366 x 768 (WXGA) 1366 x 768 (WXGA) Viewing Angles H: 176°, V: 176° H: 176°, V: 176° Dimensions (WxHxD) 800 x 473.5 x 234 922 x 544 x 234mm Weight 12.3 Kg 15.7 Kg

Important recycling information.

Your SANYO product is designed and manufactured with high quality materials and components which can be recycled and reused.

This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of seprately.

In the European Union there are separate collection systems for used electrical and electronic products.

Please help us to conserve the environment we live in! Note: This symbol mark and recycle system are applied only to

EU countries and are not applied to other countries of the

world.

RoHS

.This product does not contain any hazardous substances prohibited by the RoHS Directive.

(You will find “R” or “Z” at the last digit of the serial number or an “RSF” label near the rating plate on the RoHS compliant product.)

WARNING

.You are requested to use RoHS compliant parts for maintenance or repair. .You are requested to use lead-free solder .

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N2WLD/YLD

To enter to the Service Mode

+ Press and hold the GREEN button on the remote control and then press the P▼ button on the cabinet.

To select the service item and change data value

+ To select the adjustment item, use the P▲ or P▼ button. + To change the service data, use the Volume -(LEFT) or Volume + (RIGHT) button.

+ The data which is set in the service mode is stored into the memory IC automatically.

EXAMPLE: 000 UK4A 05.13

ITEM NO SECTION VALUE

ITEM

Exit from the Service Mode

+ Press the MENU button or turn off the TV set by using the Mains switch.

OPTION SETTINGS

UK4A ALIGNMENT MATRIX

OPTIONS CE27LC6-B CE27LD6-B CE27LC6BK-C CE27LD6BK-C CE32LC6-B CE32LD6-B CE32LC6BK-C CE32LD6BK-C SERVICE ITEM 253 11111111 SERVICE ITEM 252 11111111 SERVICE ITEM 251 11111111 SERVICE ITEM 250 11111111 SERVICE ITEM 249 11001100 SERVICE ITEM 248 00000000 SERVICE ITEM 247 11111111 SERVICE ITEM 246 01010101 SERVICE ITEM 245 00000000 SERVICE ITEM 244 11111111 SERVICE ITEM 243 00000000 SERVICE ITEM 242 00000000 SERVICE ITEM 241 11111111

SHIPPING CONDITIONS

BRIGHTNESS 3 2 3 2 3 2 2 0 CONTRAST 4 0 5 0 4 0 3 1 COLOUR 3 2 3 2 3 2 2 0 SHARPNESS 3 2 3 2 3 2 1 6 PRESET NOISE REDUCTION LOW LOW LOW LOW DYN SKIN TONE ON ON ON ON TEXT BRIGHTNESS MID MID MID MID

BASS

SURROUND

WEL TXT

P&P

EU0 UK1IRE2UI3

PC HD

DIG

HDD

PATH HDD

COLOR SYS

AFC ATS

PERSONAL DYNAMIC STANDARD ECHO

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N2WLD/YLD

BLOCK DIAGRAM

This is a diagram for all models and therefore differs slightly from the actual block diagram.

Outline

LCD PANEL

VIF

TUNER

VIFIN1

LOC2

PANEL

LVDS

SCART1

SCART2

SCART3

SIDE AV

CVBS1

TV OUT (CVBS)

RGB1

CVBS2 MON. OUT (CVBS)

RGB2

CVBS3

CVBS4

RGB

SWITCH

BA7603

VIDEO SWITCH

BA7652

RGB

CVBS

DVBO_IFVO_FMRO

CVBS30_Y30

SWO1_CVBS20_Y20

CVBS_Y5

CVBS_Y4

CVBS

SVO6/CVBS6

R3_PR31

G3_Y31

B3_PB31

VIDEO SWITCH

RGB/YPBPR MATRIX

B2_PB21

YUV

G2_Y21

R2_PR21

TEXT/OSD MIX

GTV

D-RGB

SCALER

Digital Interface

PV10_23

ADC

IN_B

IN_G

IN_R

COMPONENT

HDMI

TMDS

YPBPR

SiI9021

HDMI

DECODER

D-RGB

TUNER

DIGITAL TV MODULE

YUV

SWITCH

N/C

BA7603

N/C

RGB

SWITCH

BA7657

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N2WLD/YLD

PIN E10

TO IC801

D6614

D6615

12V_FAN

POWER DIAGRAM FOR UK4A

13V_PWR

12V_FAN

D6604

5V_SW

D6605

3V3_SW

D6606

D5V

D6607

D3V3

D6616

1V8_SW

24V

D6618

D1V8

D6621

D6601

PROTECT ARCHITECTURE

234

3V3 STB

24V

5V STB

IC6602

IC6603

IC6605

IC6606

IC6607

IC6608

IC6604

ON/OFF

POWER 1

IC6609

ON/OFF

IC6610

IC6601

IC6600

IC6613

POWER ARCHITECTURE

POWER 4

PANEL ON

POWER

UNIT

23456

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N2WKD/YKD

IC Descriptions for UK4A

IC001

This is a LA4919N-E which is the audio amplifier for the set. It has left and right inputs from the LOC and left and right outputs to the speakers and headphone socket. It also has mute and standby functions which are activated by the LOC as appropriate.

IC1101 (monitor sets only)

This is a switching IC, NJM2233BM, which allows the sync signal input on monitor sets to be switched between pin 20 of SCART 1 (conventional & ALBOS) and pin 14 of SCART 1 (SIS signal). The IC takes a 5V supply and is switched by the control line RGB_SW.

IC1205

This a ROHM BA7603F triple video switch which allows the RGB input to be switched between SCART 1 and SCART 2. The switch is controlled by the RGB_SW line from the IC.

IC1222

This a MM1225XF which is an electronic switch. This IC selects either “scart2 monitor out” or “digital module cvbs” as the output for scart 2. This is only active on digital sets.

IC1271

This a large multiway electronic switch, MM1631BJBE. Via the I2C lines the cpu can select any audio input L/R pair and feed them to scart 3 or IC801.

IC151

BA2904F - this is an OP-AMP used to amplify the AGC voltage back to IC801.

IC1602

This is a “partial resonance power supply” IC. It is used as a SMP to supply the standby voltages.

IC1604 / IC671

This is a “precision shunt regulator” used in an “error amp” configuration to provide feedback control of the supply.

IC1801/1802

PCA9534PW - These are I2C expander IC’s. They convert I2C commands from IC801 into control lines.

IC1841/1851

These are OP-AMPS used to control the speed of the fans

IC4001

This is a SST SST39VF020 CMOS multi-purpose flash with a capacity of 2Mbits. It is connected to the LOC using address lines, data input/output, write enable and control lines. The flash IC is powered by the 3V3 SW supply.

IC4002

This is a ROHM BD5260G open drain voltage detector IC which works in conjunction with the main power and the

3.3V standby line to control the back lights.

IC601

This is a “current mode PFC controller” operating in transition mode. It is used in conjunction with L603 as active power phase correction.

IC6600

This is an LA5754 voltage regulator. It provides the 5v supply for the LCD panel.

IC6601

This is a BA33BC0FP voltage regulator. It converts the 5v standby supply to 3.3v.

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N2WLD/YLD

IC Descriptions for UK4A (continued)

IC6602

This is a BA09FP-E2 voltage regulator. It converts 13v to 9v.

IC6603

This is a BA12FP-E2 12v voltage regulator. It converts the main 13v supply down to 12v for the fan.

IC6604

This is a LA5754MP voltage regulator. This IC converts the main 13v supply down to 6v. IC801 can switch this IC on and off via control line “Power 1”. Consequently all supplies developed from this 6v will also be switched (see power architecture diagram on page 8)

IC6605 / 6 / 7 / 8 / 9 / 10

These are voltage regulators which convert the switched 6v supply down to 5v, 3.3v and 1.8v.

IC6613

This is a TC7SH02 2-INPUT NOR GATE. This IC controls the 5v power to the LCD panel. It is switched via control lines “Power 4” and “Panel on”.

IC701

This is a THC63LVDM83R LVDS converter IC. This IC converts 3 sets of 8 bit data (R, G & B) into 4 channel and clock data stream to the LCD panel.

IC8001

This is a HDMI receiver / convertor. HDMI data from K1006 is fed into this IC. The IC then extracts the video and audio in digital format and sends the data to IC801. Audio data is converted to analogue via IC8501

IC801

This IC is the main control IC for the entire TV. It incorporates:-

1) CPU for control and on-screen graphics presentation.

2) Video signal processor for controlling picture presentation and quality.

3) LCD scaler for converting different resolutions to the resolution of the LCD.

4) 100 page text decoder.

5) Stereo sound decoder.

6) Multi-system decoder (PAL, NTSC, SECAM etc.)

IC802

This is an 8K x 8 bit EEProm. It is used to store all the calibration data and user settings. When a new IC is fitted, the CPU (IC801) will detect it and initialise the IC to the default factory settings.

IC8131

This is a 512 x 8 bit EEProm. It is used to store the resolutions that the tv is able to display along with the manufacturer, date of manufacture and model number. An external device (eg DVD) with HDMI will read this EEProm to determine which resolution signal to send to the tv.

IC8141

This is an I2C isolation device

IC8501

This is a digital to analogue converter. It is used to convert the HDMI digital audio data to analogue.

IC8502

This is a dual OP-AMP and is used to bufffer the HDMI analogue signal to the audio selector IC (IC1271)

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N2WKD/YKD

IC801

IC BLOCK DIAGRAMS

FLASH

INT_N

GP IO[23:16]

PO R _N

RS T_N

CFG [15:0]

GP IO[15:0]

PW M [2:0]

RS P[13:0]

RS N[13:0]

xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx

RGB 18/

RG B24

UNIT

GP IO

T[1:0]

RXC TXDSC L S DA

TIME R

CO UNT E R

UART

O N-CHIP

CR YSTAL

OS CILLATO R

FLASH

MICRO CO NTRO LLER

INTE RFAC E

80C51

PAN EL

GLOB AL

CO NT RO L

SR AM

PLL

PW M

RA M

FONT AN D

CHA RA CT ER

OS D

xxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx

DA Cs

AU DIO DSP

AUDIO CONTR O L

I2S HP -OUT LS-OUT

C, S

C, SW

LINE O/I

ADCs / DACs

AUDIO IN/OUT

SSIF

AU DIO SELECT

AD C

DE CO DE R

STER EO SOUND

SO UN D PLL

DEEM PH ASIS

BLAC K STR ETC H

RDS

YU V

WHITE STRETCH

DE INTER-

2D/3D

AD Cs

CV BS/Y

AN TI

UNIT

DITH ER

TABLE

CO LO R

OU TP UT

LOOK -UP

MIXER

OVER LAY

LINE

ME M O RY

RG B

HO RIZ. SCALER

PEAKING / LTI / CTI

NO ISE

LACER

CO M B

FILTER

TBC

AG C

ALIAS

FILTER S

RG B 30

SC ALER

UP / DOWN

HO RIZ. / VE RT.

MA TR IX

COLOR FEAT UR ES

REDU CT .

TTL

OU TP UT

LVDS AND

INTE RFAC E

GE N .

IMAG E

RG B 24

YU V 24

HIF

RG B 24

AU TO

AD JUST

RG B24

YU V24

CO LO R

MA TRIX

RG B/YUV

TXT

8051

DE CO DE R

BASE-BAN D

DE LAY LINE

PAL/SECAM /NT SC

C/CV BS

YU V 24

INPU T SELEC T

OS D

BLEN DER

alpha

DE CO DE R

MICRO -

Y/CVBS

LPLL TEST

RG B 24

PAR .

FAC E

VIDEO

INTER -

ITU

OU TP UT

RG B

OS D

CO NT R.

MEM O R Y

RG B/

FORM AT

DA Cs

INTER FAC E

Y / CVBS / RGB / YP

4 30/10

H, V,

CLK,

ClkRef

DA TA

ADDR

CN TRL

SW ITCH

ASDA ASC L

AC LK AVS AH S

RB IAS

SOGIN IN_B IN_G IN_R

OU T

VIDEO

DIG ITAL

GO BO

I/Os

16 MBit

SD RA M

B /PBIN3

CVBS / Y31

G / YIN3 /

IN3 / C31

R / P

INSS W 3

CV BS / YO U T

B / PBIN2

CVBS / Y21

G / YIN2 /

/ C21

R2 / P

INSW 2 / C20

CVBS 20 / Y20

Q SSO /

AM O U T

AG C

SW ITC H

QSS MIXE R

QSS SOUN D IF

AM DEM O DULA TO R

SIFIN/DVBIN

DVBO /IFVO /

SVO /FMR O

DV BO /FM R O

VIDEO AMP.

PLL DEM OD .

SO UND TR AP

GR O UP DELAY

VISION IF/A GC /AF C

VIFIN

AG C O UT

IFVO /SVO/

VIDEO SWITCH

YSYN C

CVBS/Y6

CVBS 3/Y4

CVBS 2/Y5

H/Vsync

VIDEO IDENT.

VID EO FILTERS

C5/C6

C4/C30

CVBS /30

CV BSO /PIP

H-OSC. + PL L

H/V SYNC SEP .

Fig 1.Block diagram of LOC II

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N2WLD/YLD

IC BLOCK DIAGRAMS

IC001 LA4919N-E <Audio Output>

IC1205 BA7603F

HP IN1

HP IN2

HEADPHONES BLOCK

Ripple filter

VG=6dB

Voltage

Regulator

HP OUT1

Vcc

HP OUT2

HP D.C

HP Standby

AMP Standby

D.C

DDL

ON TIME

IN2

PRE GND

PRE VCC

IN-VREF

IN1

POWER GND

AMP Standby SW

Ripple filter

Muting circuit

used at power on

Output amplifier Stage

amplifier

Input

amplifier

REF

Input

H/P Standby SW

Non linear amplifier

Switching Regulator BLOCK

H. L. S

ABCD

*H. L. S

Higher Level signal Selector

Head Phones Stage Input amplifier Stage

Switching Regulator Stage

Non linear amplifier

Output

amplifier

Output

amplifier

Switching

Drive

Power TR Stage

Output

amplifier

Output

amplifier

POWER GND

OUT2-

OUT2+

SW GND

SW B

SW E

SW OUT

VCC

OUT1+

OUT1-

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N2WKD/YKD

IC BLOCK DIAGRAMS

IC1271 (MM1631)

L10

L11

R10

R11

BIAS

SCL

SDA

ADR

MUTE

GND

LOUT10dB

VCC

ROUT10dB

LOUT20dB

ROUT20dB

LOUT30dB

ROUT30dB

BIAS

Logic

23 22 21 20 24

31 32

IC4001 (ST39VF0200)

Functional Block Diagram

Memory Address

Address Buffers & Latches

CE# OE#

WE#

Control Logic

X-Decoder

SuperFlash

Memory

Y-Decoder

I/O Buffers and Data Latches

DQ7-DQ0

1150 B1.1

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N2WLD/YLD

IC BLOCK DIAGRAMS

IC6600 / IC6604 (LA5754MP-DL-E)

IC601 L6562D

Vcc

INV

25 V

VOLTAGE

REGULATOR

2.1 V

1.6 V

GND

INTERNAL

SUPPLY 7V

REF2

2.5V

OVERVOLTAGE

DETECTION

ZCD

COMP

23 4

UVLO

ZERO CURRENT

DETECTOR

MULT

MULTIPLIER AND THD OPTIMIZER

DISABLE

RSQ

Starter

stop

STARTER

5pF

40K

DRIVER

Vcc

15 V

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N2WKD/YKD

IC BLOCK DIAGRAMS

IC603 L6598D

IC1801 / IC1802 PCA9534PW

Rfmin

Rfstart

OPOUT

OPIN-

OPIN+

OP AMP

VCO

REF

6 7

Ifmin

Ifstart

CONTROL

LOGIC

DETECTION

DEAD

TIME

BOOTSTRAP

DRIVER

DRIVING

LOGIC

Iss

Css

HVG

DRIVER

LEVEL

SHIFTER

LVG DRIVER

Vthe1

Vthe2

BOOT

HVG

OUT

LVG

GND

EN1

EN2

H.V.

BOOT

LOAD

PCA9534

A0 A1 A2

SCL SDA

VDD

Vss

INPUT

FILTER

POWER-ON

NOTE: ALL I/Os ARE SET TO INPUTS AT RESET

RESET

C/SMBUS

CONTROL

8-BIT

WRITE pulse

READ pulse

INPUT/

OUTPUT

PORTS

FILTER

I/O0 I/O1 I/O2 I/O3

I/O4 I/O5

I/O6 I/O7

Vcc

INT

SU01783

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