Hisense LCD3203EU Bedienungsanleitung
1
LCD3203EU
SERVICE MANUAL
(V1.0)
January 2005
2
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
3
SAFETY PRECAUTION
WARNING:
Service should not be attempted by anyone unfamiliar with the necessary precaution on
thisreceiver. The following 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.
CAUTION: BEFORE SERVICING THE CHASSIS, READ THE “SAFETY
PRECAUTION” “PRODUCT SAFETY NOTICE”ON PAGE 1 OF THIS
MANUAL.
4
BLOCK DIAGRAM
12 3
XS001
POWER
BOARD
MAIN
BOARD
XPK01
KEY
BOARD
TUNE
BOARD
(393A)
LCD
000
XP7 XP4 XP6
000
XP608 XP607 XP610
814 12
000
XP609
7
26
000 000
000 000
XPE005 XPE006
right
left
REMOTE
BOARD(467A)
000
000
XP606
XP08
4(earphone line)
(530)
(
526
)
(531)
SCART OUTPUT
BOARD(466A)
000000
000000
XP616 XP617 XP612
SP305 SP302 SP303
XP613
SP304
8
8
4
5125
000
XP8
000 000
000
8
5
XP611
XP04
XPE004
000 000000
000 000000
XP15
XP16 XP17
XPE001
XPE003 XPE002 Inverter
line
Inverter
line
54
5
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
Switch of TEXT and SCART2(R、G、B)
4 MUTE Be used to mute
5 SW1 SCART1 identify automatically
6
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
SCART2(R、G、B) input
8 G_IN
SCART2(R、G、B) input
9 B_IN
SCART2(R、G、B) input
10 FB_IN
11 GND
12 VOUT Video output
7
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
8
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 VBR
0V~3.3V Luminance regulation 0V~3.3V
12 On/Off
0V~5V 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
9
SIGNAL DIAGRAM
A600
N600
MSP3410
N603
TDA7266B
2SIF
AUDIO
N604
TDA2822
MUTE
V603 V604
CVBS LCD
N6
VPC3230
N605
SDA5550
VIDEO(SCART)
S-VIDEO(SCART2)
LVDS
N601
PI5V330
VGA
DVI
YPbPr
RGB(SCART1)
TUNER
N8
GM1501
N5
PI5V330
10
TROUBLESHOOTING
yes yes
no no
red
blue
NO
YES
YES
no
N
O PICTURE
is there noise
p
icture?
Is indicato
r
light red o
r
blue?
VGA o
r
HDTV OK?
Main board is
b
ad
Tuner board is
b
ad
Antrnna/cable
ok? tuner board is
b
ad
Is there
signal ？
Check the Antrnna/cable connection
Check the main board
Check the signal connection
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