Sanyo 42K40TD Schematic
SERVICE MANUAL LCD Television
FILE NO.
Original Version
Chassis Series: UE5-B
N7DE
Model No. LCD-42K40TD
Give complete “SERVICE REF. NO.” for
parts order or servicing. It is shown on the
rating plate at the cabinet back of the unit.
This T.V. receiver will not work properly in
foreign countries where the television
transmission system and power source differ from the design specifications. Refer to
the specification table.
Product Code: 1-130-184-04
Contents
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chassis Block Diagrams . . . . . . . . . . . . . . . . . . 4-5
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . 6-8
On-screen Service Menu system . . . . . . . . . . . . 9-10
Service Adjustments . . . . . . . . . . . . . . . . . . . . . 11-13
Mechanical Disassembly . . . . . . . . . . . . . . . . . . 14-15
Chassis Electrical Parts List . . . . . . . . . . . . . . . 16-31
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . 32
PCB Assemble . . . . . . . . . . . . . . . . . . . . . . . . . . 33-34
Printed Wiring Board . . . . . . . . . . . . . . . . . . . . . 35-37
Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . 38-43
REFERENCE NO. SM3010465
Service Ref. No. LCD-42K40TD-00
2
Safety Notice
Safety Precautions
The following precautions must be observed.
1:Comply with all caution and safety-related notes provided on the cabinet back, cabinet bottom, inside the
cabinet or on the chassis.
2: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, etc..
DO NOT OPERATE THIS TELEVISION WITHOUT THE PROTECTIVE SHIELD IN POSITION AND
PROPERLY SECURED
3:Before replacing the cabinet cover, thoroughly inspect the inside of the cabinet to see that no stray parts or
tools have been left inside.
Before returning any televison to the customer, the service personnel must be sure that it is completely safe
to operate without danger of electrical shock.
Product Safety Notice
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
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 .
3
Model LCD-42K40TD
Maximum Visible Range
106cm
Picture Resolution
1920(H) x 1080(V)
Viewable Angle(L。/3) L/R:+/-89D, U/D:+/-89D
Brightness 500cd/m²
Mobile Trailer Time 5ms
Voltage AC110-242V 50/60Hz
Power Consumption 188W
Power Management VESA DPMS
Digital TV System DVB-T(2K/8K COFDM), Band Wide: 7MHZ
Video decoder:MPEG2 MP@HL
Audio decoder:MPEG1,MPEG2(Layer I/II),and DOLBY Digital(AC3)
Analog TV System Colour System:PAL,SECAM,NTSC/NTSC4.43(only AV)
Sound System:D/K,I,B/G,
Stereo System:NICAM,A2/IGR(German Stereo)
Channel Coverage - VHF: 0-12
- UHF: 27-69,
- MATV: UHF 20-27, UHF 70-75, S2-S44
Speaker Size Mains: 6cm x 12cm x 2pcs
Sound speciality Maximum Output Power is 10W+10W
Input terminals PC input terminal : RGB X 1 HDMI terminal: x3
Audio: Mini stereo jack x 1 (Audio input of PC)
Video: Composite video terminals x1 ()
S-VIDEO input: x 1 (DIN 4-pin, Y/C separate signal input)
DVD input: Component video input Y, CB/PB, CR/PR input x 1
Audio input: (R/L) x 4 (400mVrms)
Output terminals
Video Monitor Output:
Audio Monitor Output: R/L x 2 (
S/P DIF (Coaxial) Output x 1
Headphone Jack : Mini stereo jack x1
Dimensions
(Width x Height x Depth) 1009.5mm X 674.8mm X 271.6mm (Including Stand)
Net Weight
(Including Stand ) 18 KG
Operating Environment
Operating Temperature 0ºC~40ºC（32ºF~104ºF
）
Storage Temperature -10ºC~50ºC（14ºF~122ºF
）
4
Chassis Block Diagrams
for HDCP
5V VA
5V STB
SPI FLASH
(option for air
update)
TUNER
TDTC-G501D
DVB-T
DEMODULATOR
CE6353
IF-PLL
TDA9886
VGA
HDMI_2
HDMI_3
1/3
SWITCH
PS321
HDMI
PORTS
CVBS0P
SIF
TS
DDR
UART
DDR SDRAM
256Mb x2
UART
I/F
SPI
DUAL
LVDS
LG PANEL
LC420WUN-SCB1
MUX
LINE
AUDIO
OUT
OP AMP
4558R
POWER
AMPLIFIER
TDA3124D2
IR
KEY BOARD
IR
USB
HEADER
EEPROM
24C32
DDCR
R/G/B 1
Y/Pb/Pr
R/G/B 0
24C02CT
AV1
HDMI_1
AV OUT
H.PHONE
EEPROM
24C512
SPDIF
SPDIFO
CVBS1P
CVBSO
LINE OUT1
10W
10W
HEAD PHONE
OUTPUT
CVBS/L/R
HP-L
R/G/B
JACK
LINE IN2
L
/
R
L/R
LINE IN1
L/R
Y/Pb/Pr
L/R
LINE IN3
L/R
CVBS
MSD1
09CL- H
DVB LCD/PDP DTV
PROCESSOR
MCU
VIDEO DEC
MPEG2 MP@HL DEC
MPEGI&II,AC3 DEC
NICAM/A2
SCALER
HDMI
LVDS
Q24C02CT/ SN-P
QNJM4558M---P
SPI FLASH
32Mb
QRCLAMP0524PP
1LB4J
11B0580M
TS
IF-
IF+
IIC1
IF_AGC
IF_TV
TV-VID
SIF P/M
I2C
RF-AGC
RST
20.48M
12MHz
I2C
UAR
FOR SOFT DEBUG
L
R
RESET
Q
PS321TQFP80M
USB
ESD
ESD
ESD
4MH
IIC1
IIC2
IIC3
HPD3
HPD1
HPD2
DDCDA
I2C-DDC
HOTPLUG
MUTE1
AU AMP
TPA6110
MUTE2
QTPA6110A2--P
KEY
IIC2
SPDIF
HP-R
HP-L
HP-R
RS232_I
UART1
RXD/TXD
QTDA9886TSV4P
S_VIDEO
MAX232
C
Y
CVBS4P
CVBS6P
UAR
for external
u
p
date
BUFFER
5
CPU
Block Diagrams
MSD109CL-H
6
256Mb TSOP-II Package Pinout
V
DD
1
66Pin TSOP
II
(400mil x 875mil)
DQ
0
2
V
DDQ
3
NC
4
DQ
1
5
V
SSQ
6
NC
7
DQ
2
8
V
DDQ
9
NC
10
DQ
3
11
V
SSQ
12
BA
0
20
CS
19
RAS
18
CAS
17
WE
16
NC
15
V
DDQ
14
NC
13
V
DD
27
A
3
26
A
2
25
A
1
24
A
0
23
AP/A
10
22
BA
1
21
V
SS
54
DQ
7
53
V
SSQ
52
NC
51
DQ
6
50
V
DDQ
49
NC
48
DQ
5
47
V
SSQ
46
NC
45
DQ
4
44
V
DDQ
43
A
11
35
36
CKE
37
CK
38
DM
39
V
REF
40
V
SSQ
41
NC
42
V
SS
55
A
4
56
A
5
57
A
6
58
A
7
59
A
8
60
A
9
34
(0.65mm Pin Pitch)
33
32
31
30
29
28
61
62
63
64
65
66
NC
NC
NC
NC
NC
V
DD
NC
DQS
NC
V
SS
CK
NC
A
12
V
SS
NC
V
SSQ
NC
DQ
3
V
DDQ
NC
NC
V
SSQ
NC
DQ
2
V
DDQ
A
11
CKE
CK
DM
V
REF
V
SSQ
NC
V
SS
A
4
A
5
A
6
A
7
A
8
A
9
NC
DQS
NC
V
SS
CK
NC
A
12
V
DD
NC
V
DDQ
NC
DQ
0
V
SSQ
NC
NC
V
DDQ
NC
DQ
1
V
SSQ
BA
0
CS
RAS
CAS
WE
NC
V
DDQ
NC
V
DD
A
3
A
2
A
1
A
0
AP/A
10
BA
1
NC
NC
NC
NC
NC
V
DD
Bank Address
BA0~BA1
Auto Precharge
A10
64Mb x 4
32Mb x 8
V
DD
DQ
0
V
DDQ
DQ
1
DQ
2
V
SSQ
DQ
3
DQ
4
V
DDQ
DQ
5
DQ
6
V
SSQ
BA
0
CS
RAS
CAS
WE
LDM
V
DDQ
DQ
7
V
DD
A
3
A
2
A
1
A
0
AP/A
10
BA
1
NC
LDQS
NC
NC
NC
V
DD
V
SS
DQ
15
V
SSQ
DQ
14
DQ
13
V
DDQ
DQ
12
DQ
11
V
SSQ
DQ
10
DQ
9
V
DDQ
A
11
CKE
CK
UDM
V
REF
V
SSQ
DQ
8
V
SS
A
4
A
5
A
6
A
7
A
8
A
9
NC
UDQS
NC
V
SS
CK
NC
A
12
16Mb x 16
IC Block Diagrams
K4H561638H
7
IC
Block Diagrams
CE6353(INTEL)
8
IC Block Diagrams
TPA3124D2PWPR
TDA9886
1
2
3
4
5
6
7
8
9
10
11
12
PVCCL
SD
PVCCL
MUTE
LIN
RIN
BYPASS
AGND
AGND
PVCCR
VCLAMP
PVCCR
24
23
22
21
20
19
18
17
16
15
14
13
PGNDL
PGNDL
LOUT
BSL
AVCC
AVCC
GAIN0
GAIN1
BSR
ROUT
PGNDR
PGNDR
PWP (TSSOP) PACKAGE
(TOP VIEW)
9
On-screen Service Menu System
General
This set has an On-screen Menu system included in the CPU that allows remote operation for most of the
service adjustments.
r How to select the service item and adjust data:
On-screen Service Menu System
Quick operation is needed to enter Service Mode.
r How to enter the Service Menu
1. Press and hold the MENU button on Side Controls.
2. Keep pressing the MENU button and press “1” button on the remote control, and the Service Mode will be
displayed.
or button to navigate through the
options or adjust an option. Press OK button to confirm a selection or
enter a sub-menu.
r To exit service mode
Press MENU button to exit service mode.
OK
Open or close the On-Screen Menu.
MENU button
Side Controls
[ Service Mode Menu ]
Service Mode
ADC ADJUST
PICTURE MODE
W/B ADJUST
WHITE PATTERN : OFF
RFAGC ADJUST : 16
SSC ADHYST
BACKLIGHT ADJUST
UE5B_V2.26_LG42_100301
ADC ADJUST
10
■ Service Adjustment Data Table
On-screen Service Menu System
ADC ADJUST SOURCE RGB
R-GAIN 97
G-GAIN 103
B-GAIN 101
R-OFFSET 133
G-OFFSET 123
B-OFFSET 131
AUTO ADC <FAIL/SUCCESS>
SOURCE YPbPr(SD)
R-GAIN 65
G-GAIN 61
B-GAIN 66
R-OFFSET 128
G-OFFSET 128
B-OFFSET 128
AUTO ADC <FAIL/SUCCESS>
SOURCE YPbPr(HD)
R-GAIN 63
G-GAIN 61
B-GAIN 66
R-OFFSET 128
G-OFFSET 128
B-OFFSET 128
AUTO ADC <FAIL/SUCCESS>
W/B ADJUST BASE R-GAIN 64
SOURCE ALL BASE G-GAIN 64
TEMPERTURE ALL BASE B-GAIN 64
11
Service Adjustments
CAUTION !
Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance
and for correct operation.
r Setting the Initial data
This adjustment is controlled by the CPU (IC5500) through the IIC Bus Data Line in the chassis, and those
adjustment data are memorized the memory IC (IC5750). Therefore, Main board or the memory IC (IC5750)
is replaced, these data will be disappeared. Readjust should be made. Initial data is provided in the CPU
ROM, when the memory IC (IC5750) is replaced with new one. CPU ROM data is loaded into the memory.
Initial data is provided to operating the monitor basically. For operating the monitor quality performance,
further adjustment is required following chassis electrical adjustment.
1. Enter the Dealer Mode, and select RESET.
r How to enter the Dealer Mode.
Press the MENU button on Side Controls, the screen menu will be displayed.
Press the INFO button on the Remote Control, you can enter the Dealer Mode as following.
or OK button to select RESET and confirm to
returns most setting
values to the factory default
settings.
(Note: After executed reset function, ADC ADJUST and W/B ADJUST should be readjusted. Please
enter Service Mode to adjust data.)
2. Enter the Service Mode, and select ADC ADJUST / W/B ADJUST to adjust the data according
"Service Adjustment Data Table" on page 10.
r How to enter the Service Mode. Please refer to page 9.
12
Service Adjustments
r ADC ADJUST
1. Enter the Service Mode.
2. Select "ADC ADJUST" by pressing
button, then press OK button to enter ADC ADJUST menu.
3. Press button to select "SOURCE" item, press or button to select RGB, YPbPr(SD) or
YPbPr(HD).
(1). Receive signal from PC input. And set ANSI pattern contrast in PC mode.Receive signal from PC input. And set ANSI pattern contrast in PC mode.
(2). Enter the ADC ADJUST menu. PressEnter the ADC ADJUST menu. PressPress button to select "SOURCE" item
(3). Press or button to select RGB.
(4). Press button to select AUTO ADC item, then press OK button.
(1).
(2). Enter the ADC ADJUST menu. PressEnter the ADC ADJUST menu. PressPress button to select "SOURCE" item.
(3). Press or button to select YPbPr (SD).
(4). Press button to select AUTO ADC item, then press OK button.
(1).
(2). Enter the ADC ADJUST menu. PressEnter the ADC ADJUST menu. PressPress button to select "SOURCE" item.
(3). Press or button to select YPbPr (HD).
(4). Press button to select AUTO ADC item, then press OK button.
4. Exit the Service Mode.
Wait for about several seconds until AUTO ADC adjust completed. Then press MENU button to exit.
Note: If you want to adjust any item, please consult qualified service personnel.
RGB
YPbPr (SD)
YPbPr (HD)
ADC ADJUST
SOURCE : RGB
R-GAIN : 117
G-GAIN : 121
B-GAIN : 123
R-OFFSET : 131
G-OFFSET : 145
B-OFFSET : 123
AUTO ADC FAIL
SOURCE : RGB
13
r
W/B ADJUST
Pattern
Condition
Picture Mode: STANDARD
Color Temperature: NORMAL
Aging Time: More than 10 minutes
Adjustment
1. Enter the Service Mode.
2. Select "W/B ADJUST" by pressing button, then press OK button to enter W/B ADJUST menu.
3. Exit the Service Mode.
After adjustment, confirm white balance again by normal picture.
Note: • Maybe BASE data for each TV set is different. And the items are for factory setting and
Service Centre.
• SOURCE items are for all input source gain. Usually the items can not be adjusted.
• USER items are just for user setting. Usually the items can not be adjusted.
• If you want to adjust any item, please consult qualified service personnel.
Service Adjustments
W/B ADJUST
BASE R-GAIN : 78
BASE G-GAIN : 78
BASE B-GAIN : 78
SOURCE : DTV
SOURCE R-GAIN : 25
SOURCE G-GAIN : 25
SOURCE B-GAIN : 25
TEMPERATURE : Normal
USER R-GAIN : 25
USER G-GAIN : 25
USER B-GAIN : 25
R-OFFSET : 128
G-OFFSET : 128
B-OFFSET : 128
COPY ALL
BASE R-GAIN : 78
14
Mechanical Disassembly
(一) Lid Back Removal
Remove screws A and B, Take the Lid Back off.
(A: 2pcs, B: 3pcs)
A
LID
BACK
Picture 1.
A
B
B
B
POWER BOARD
MAIN
BOARD
Picture 2.
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