Hisense LCD-3203-eu Schematic

LCD3203EU

SERVICE MANUAL

(V1.0)

January 2005

1

CONTENTS

1. SAFETY PRECAUTION……………………………………………………….………3

2. PRODUCT SAFETY NOTICE…………………………………………………………3

3. BLOCK DIAGRAM…………………………………..………………………………..4

4. FUNCTION OF CONJUNCTIONS………………………………………….………. .5

5. SIGNAL DIAGRAM…………………………………..………………………………..9

6. TROUBLESHOOTING………………………………………………………………..10

7. SERVICE MODE MENU………………..……………………………….……………..11

8. PART LIST……………..…………………………..…………………….……………..12

2

CAUTION: BEFORE SERVICING THE CHASSIS, READ THE “SAFETY

PRECAUTION” “PRODUCT SAFETY NOTICE”ON PAGE 1 OF THIS
MANUAL.

SAFETY PRECAUTION

WARNING:

Service should not be attempted by anyone unfamiliar with the necessary precaution on
thisreceiver. The followi ng are the necessary precautions to be observed before servicing this
chassis.

1. When replacing a chassis in the cabinet, always be certain that all the protective devices are
put back in place, such as: non-metallic control knobs, insulating covers, shields,
isolation resistor-capacitor network etc.

2. When replacing parts or circuit boards, disconnect the power cord.

3. When replacing a high wattage resistor (oxide metal film resistor) on the circuit board, keep
the resistor 10mm (1/2in) away from circuit board.

4. Connection wires must be kept away from components with high voltage or high temperature.

5. If any fuse in this TV receiver is blown, replace it with the FUSE specified in the chassis parts
list.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the chassis have special safety-related characteristics.

These characteristics are often passed unnoticed by a visual inspection.
Replacement parts which have these special safety characteristics are identified in this manual
and its supplement electrical components having such features are shaded on the schematic
diagram and the parts list.

Before replacing any of these components, read the parts list in this manual carefully. The use of
substitute replacement parts which do not have the same characteristic as specified in the parts
list may create shock, fire or other hazards.

3

BLOCK DIAGRAM

000

5

REMOTE

BOARD(467A)

XP04

XP08

000

000

XP606

4(earphone line)

SCART OUTPUT

BOARD(466A)

SP305 SP302

SP303

000000

8

XP616 XP617 XP612

000000

SP304

XP613

5125

000

XP609

4

000

XP611

TUNE
BOARD

(393A)

XP7

XP4

8 14 12

XP608

XP607

MAIN

XP6

000

000

XP610

26

BOARD

(530)

LCD

XP8

XP16

000 000000

8

XP15

7

XP17

54

000 000000

XPK01

000

KEY

XPE003

BOARD

(531)

XPE004

000

XPE001

XPE002

POWER
BOARD

(

526

)

XS001

12 3

XPE005

XPE006

Inverter

000 000

line

Inverter

line

000 000

right

left

8

4

FUNCTION OF CONJUNCTIONS

XPE003---XP16

ITEM NAME FUNCTION

1 +12V Panel power
2 +12V Panel power
3 5V Main board power(no use )
4 5V Main board power(no use )
5 POWER_ON Control POWER to standby
6 GND
7 GND

XPE001---XP15

ITEM NAME FUNCTION

1 +5V_M Main board power
2 +5V_M Main board power
3 GND
4 GND

XPE002---XP17

ITEM NAME FUNCTION

1 BRI Luminance regulation 0V~3.3V
2 PWM PWM Dimming
3 ON\OFF Backlight On~Off 0V~5V
4 GND
5 GND

XP7---XP608

ITEM NAME FUNCTION

1 T_SDA For SDA5550(N605) I2C SDA
2 T_SCL For SDA5550(N605) I2C SCL
3 SW0

4 MUTE Be used to mute
5 SW1 SCART1 identify automatically

Switch of TEXT and SCART2(R、G、B)

5

6 SW2 SCART2 identify automatically
7 GND
8 SW3 SDA5550 reset

XP4---XP607

ITEM NAME FUNCTION

1 GND
2 C_IN SCART2 C input
3 GND
4 Y_IN SCART2 Y input
5 GND
6 AV1 SCART1 AV input
7 GND
8 AV2 SCART2 AV input

9 GND
10 TV_IN TV from TUNER
11 GND
12 PR HDTV component input
13 PB HDTV component input
14 Y HDTV component input

XP6---XP610

ITEM NAME FUNCTION

1 VVS To SDA5550

2 VHS

3 GND

4 SDA For MSP3410( N600) I2C SDA

5 SCL For MSP3410( N600) I2C SCL

6 GND

7 R_IN

8 G_IN

9 B_IN
10 FB_IN

11 GND
12 VOUT Video output

SCART2(R、G、B) input
SCART2(R、G、B) input
SCART2(R、G、B) input

6

XP12

ITEM NAME FUNCTION

1 GND
2 GND
3 TXA0- LVDS signal
4 TXA0+ LVDS signal
5 GND
6 TXA1- LVDS signal
7 TXA1+ LVDS signal
8 GND

9 TXA2- LVDS signal
10 TXA2+ LVDS signal
11 GND
12 TXAC- LVDS signal
13 TXAC+ LVDS signal
14 GND
15 TXA3- LVDS signal
16 TXA3+ LVDS signal
17 GND
18 GND
19 +12V
20 +12V
21 +12V
22 +12V
23 MODE Mode selection
24 MODE Mode selection
25 GND
26 GND

XPK01---XP8

ITEM NAME FUNCTION

1 +3.3V
2 ADC1 Key code input
3 IR1 Remote code input
4 +5V
5 RED Power indicator light
6 GND

7

7 BLU Power indicator light
8 GND

XPE005、XPE006

ITEM NAME FUNCTION

1 Power

Supply+24V

2 Power

Supply+24V

3 Power

Supply+24V

4 Power

Supply+24V

5 Power

Supply+24V
6 GND
7 GND
8 GND
9 GND

10 GND
11 V

12 On/Off

BR

0V~3.3V

0V~5V

Luminance regulation 0V~3.3V

Backlight On~Off 0V~5V

XPE004---XP611

ITEM NAME FUNCTION

1 +15V TDA7266 power
2 +15V TDA7266 power
3 GND
4 GND
5 +12V
6 GND
7 +5V
8 GND

8

SIGNAL DIAGRAM

MUTE

V603 V604

AUDIO

A600

TUNER

2SIF

CVBS

VIDEO(SCART)

N600

MSP3410

N605

SDA5550

N6

VPC3230

N603

TDA7266B

N604

TDA2822

N8

GM1501

PI5V330

N5

LVDS

LCD

S-VIDEO(SCART2)

N601

DVI

PI5V330

VGA
YPbPr

RGB(SCART1)

9