Part No. 1KA6P2P0002-- N4JK OCTOBER 2006 Reference No. SM1110002-00
LCD Monitor
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
Contents
Safety precautions/Specifications ..................................................................................................................2
Service Mode/Service Data ........................................................................................................................3~7
HDMI / PC / Component Signal Support Timing List......................................................................................8
Mechanical Disassembly ..........................................................................................................................9~12
Block Diagram ..............................................................................................................................................13
Power Diagram ............................................................................................................................................14
Power and Control Diagram ........................................................................................................................15
RS232 Settings ......................................................................................................................................16~17
Troubleshooting ............................................................................................................................................18
IC Descriptions........................................................................................................................................19~20
IC Block Diagrams........................................................................................................................................................................21~22
Cabinet Parts List ........................................................................................................................................28
Pin description of semiconductors................................................................................................................29
Electric Parts List ..........................................................................................................................................30
Model CE42LM4WPR-E
Service Ref. No. CE42LM4WPR-E-00
PRODUCT CODE: 113003909
ORIGINAL VERSION:
Chassis No.UK4-B
Please use Schematic Diagram 1KA6P2P0005--
inserted with this Service Manual.
CE42LM4WPR-E
FILE NO.
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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 tech-
nician 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
CATV: X, Y, S1-S41, B-Q
Aerial input impedance 75ohm
AV terminal
AV1: CENELEC standard
INPUT: Composite video, RGB and Audio L/R
OUTPUT: TV-output with composite video and audio L/R
AV2: BNC
INPUT: RGB, H and V / Y, Pb, Pr and audio L/R
OUTPUT: RGB, H and V / Y, Pb, Pr
AV3: BNC
INPUT: Composite video
OUTPUT: Composite video
Audio M.Out Cinch: L/R
HDMI
INPUT: HDMI GROUP Standard
PC INPUT:
Serial Port RS232C
INPUT/OUTPUT:
Contrast Ratio 800:1
Display Resolution 1366 x 768 (WXGA)
Viewing Angles H: 178°, V: 178°
Dimensions (WxHxD) 1050 x 654 x 162
Weight 39.5 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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HOTEL MODE
To enter Hotel Mode press and hold the green button on the remote control for 3 seconds.
Hotel Mode allows the user to set up the function of the set
SER
VICE MODE
To enter Service Mode press and hold the green button on the remote control whilst pressing the 6 button on the tv cabinet at the same time,
alternatively:-
From Hotel Mode press and hold the green button on the remote control for 3 seconds
To select the service item and change data value
+ To select the adjustment item, use the 5 or 6 buttons.
+ To change the service data, use the Volume - (LEFT) or Volume + (RIGHT) buttons.
+ The data which is set in the service mode is stored into the memory IC automatically
EXAMPLE: 000 UK4B 07.45
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.
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SERVICE DATA
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SERVICE DATA (contd.1)
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SERVICE DATA (contd.2)
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SERVICE DATA (contd.3)
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HDMI / PC / COMPONENT SIGNAL SUPPORT TIMING LIST
Resolution
Horizontal
Frequency
(kHz)
Vertical
Frequency
(Hz)
Remark
720_400 31.47 70.09 DOS(VGA )
640_480 31.50 60.00 DOS(VGA VESA 60Hz)
640_480 37.50 75.00 VGA VESA 75Hz
640_480 37.86 72.81 VGA VESA 70Hz
640_480 37.86 74.38 VGA
640_480 35.00 67.00 Mac.
640_480 34.97 66.60 Mac LC 13"
800_600 35.16 56.25 SVGA VESA 56Hz
800_600 37.90 60.32 SVGA VESA 60Hz
800_600 46.90 75.00 SVGA VESA 75Hz
800_600 32.70 51.09 SVGA
800_600 34.50 55.38 SVGA
800_600 37.90 61.03 SVGA
800_600 38.00 60.51 SVGA
800_600 38.60 60.31 SVGA
832_624 49.00 74.00 Mac.
1024_768 48.40 60.00 XGA V ESA 60Hz
1024_768 56.50 70.00 XGA V ESA 70Hz
1024_768 60.000 75.00 XGA VESA 75Hz
1024_768 44.00 54.58 XGA
1024_768 46.90 58.20 XGA
1024_768 47.00 58.30 XGA
1024_768 48.50 60.02 XGA
1024_768 58.03 72.00 XGA
1024_768 60.31 74.92 XGA
1024_768 61.00 75.70 XGA
1024_768 60.24 75.08 MAC_Normal 19"
1280_960 60.00 60.00 SXGA VESA 60Hz
1280_1024 79.976 75.025 SXGA VESA 75Hz
1280_1024 62.50 58.60 SXGA
1280_1024 63.370 60.01 SXGA
1280_1024 63.34 59.98 SXGA
1280_1024 63.74 60.01 SXGA
1280_1024 63.79 60.18 SXGA
1280_1024 63.90 60.00 SXGA
1280_1024 71.69 67.19 SXGA
1280_1024 76.97 72.00 SXGA
1280_1024 81.13 76.107 SXGA
1152_864 64.20 70.40 SXGA
1152_900 61.20 65.20 SXGA
1152_900 61.85 66.00 SXGA
1152_900 71.40 75.60 SXGA
1152_870 68.68 75.06 MAC_Normal 21"
1280_960 75.00 75.08 Mac.
1280_1024 80.00 75.00 Mac_.
1600_1200 75.00 60.00 UXGA VESA 60Hz
Resolution Horizontal
frequency (KHz)
Vertical frequenc
y
(Hz)
Dot Clock
Frequency(Mhz)
Remark
720x480 15.735 60i 12.27 SDTV 480i
720x576 15.625 50i 13.50 SDTV 576i
720x480 31.25 60p 27 SDTV 480p
720x576 31.25 50p 27 HDTV 576p
1280x720 45.00 60p 74.25 HDTV 720p
1280x720 37.50 50p 74.25 HDTV 720p
1920x1080 33.75 60i 74.25 HDTV 1080i
1920x1080 28.13 50i 74.25 HDTV 1080i
1920x1080 31.25 50i 74.25 HDTV 1152i
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Mechanical Disassemblies (CE42LM4WPR-E)
1. Check points before disassembly
Check the location of tamper proof marking (Fig-1)
If the marks are removed or touched, somebody may have already disassembled the set.
This makes the warranty regarding this IP model invalid.
After finishing the service, make the set tamper proof again with silver paint.
2. Rear Plate Removal
Remove screws A (6 pcs), then remove the Terminal Cover (Fig-2)
Remove screws B (4 pcs), then remove the AV Terminal (Fig-3)
Remove screws D (20 pcs) - (Fig-6)
Remove screw C (Fig-5), then remove the Rear Plate.
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Mechanical Disassembly contd.
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Mechanical Disassembly contd.
Location if Circuit Board and Electric Parts
Note: Control Board is fixed on Cabinet Front.
3. Chassis and Fan Removal
Screw A : M3 x 6
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4. Cabinet Back Removal
(1) Remove the lead wire of the Control Board from the Main Board.
(2) Remove the lead wire of the inverter from the Power Board / Main Board.
(3) Remove the LVDS cable from the LCD Panel.
(4) Remove cables from the Inverter area or Power and Main Board
(5) Remove screw A (20 pcs).
(6) Remove the Cabinet Back.
Mechanical Disassembly contd.
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BLOCK DIAGRAM
This is a diagram for all models and therefore differs slightly from the actual block diagram.
LCD PANEL
SCALER
Digital
Interface
ADC
D-RGB
TEXT/OSD MIX
YC
IF
VIDEO SWITCH
RGB/YPBPR
VIFIN1
LOC2
PANEL
LVDS
VIF
TUNER
GTV
SCART1
CVBS1
TV OUT (CVBS)
RGB1
CVBS3
RGB
SWITCH
VIDEO
SWITCH
BA7652
SVO6/CVBS6
CVBS
CVBS_Y4
CVBS_Y5
SWO1_CVBS20_Y20
CVBS30_Y30
DVBO_IFVO_FMRO
HDMI
TMDS
BA7603
SiI9021
HDMI
DECODER
D-RGB
RGB
CVBS
PV10_23
IN_R
IN_G
IN_B
R3_PR31
G3_Y31
B3_PB31
PC
RGB
RGB
SWITCH
BA7657
MATRIX
COMPONENT
YPBPR
RGB
H/V
Y/G
Pb/B
H/V
Pr/R
H
V
OUT IN
OUT
IN
Outline
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1
2
3
4
5
6
KQ
1
1
POWER 1
ON/OFF
IC6604
6V
POWER 4
PANEL ON
ON/OFF
IC6613
IC6600
IC6601
5V
3V3 STB
5V STB
24V
IC6610
IC6609
IC6608
IC6607
IC6606
IC6605
IC6603
IC6602
13V_PWR
9V
12V_FAN
5V_SW
3V3_SW
D5V
D3V3
1V8_SW
D1V8
POWER ARCHITECTURE
D6601
D6621
D6618
D6616
D6607
D6606
D6605
D6604
D6615
D6614
TO IC801
PIN E10
5V
1
2
3
4
5
KQ
24V
6V
D3V3
D5V
3V3_SW
5V_SW
12V_FAN
9V
PROTECT ARCHITECTURE
2
3
4
5
KR
POWER
TO
UNIT
POWER DIAGRAM FOR UK4B
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Power and Control Diagram
PJ-NET
POWER
CONNECTOR
MAIN
SUB-AV-BNC
SUB-AV SOCKET
1KA9W0640017-
K2009
TX
RX
5V
5V
3.3V
12V
3.3V
5V cct
K2014
K2013
K2006
KCPA
TO
G19
KCP
IC1551
1AA93ABAF300X
KG
1 2 3 4
P_FAIL
5V1A
KA
KQ
16V Main Supply
1
8
1
5
12V
5V
3.3V
K3000
cct
K3A
12V
K3003
K603
K303-03
K3Q
K3R
KR
5V S/B
K605 K3002
K605-02
5V
gnd
16V
12V
Gnd
Gnd
Gnd
Gnd
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
5V S/By
Gnd
D5V
Power on
ON/OFF
VBR
NC
NC
NC
NC
Gnd
Gnd
K3001
NC
NC
NC
NC
NC
1
11
1
6
POWER_3
BL_ADJ
BL_ON
3.3V S/B
KP
R1600
R1601
gnd
1AA0B10H086JA
1AA0B10H087D0
1AA0B10H086JB1AA0B10H086G0
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The TV control commands are used to control a TV through RS232C from a computer.
Serial Interface Specification
Transfer Specification
1. Transmission Speed : initial setting value is 19200
2. Transmission speed can be changed by hotel mode
Connection
The designated RS232C serial cable that is provided with the LCD monitor must be used for a connection between a computer and a LCD monitor
The TV command is defined by one command / one line that starts with “C” and ends with carriage return (0x0D)
There are two types of commands:
1. Functional Execution Commands e.g. Co5[CR] (see table on following page)
2. Status Read Commands e.g. “CR0 [CR] (see table on following page)
Setting the monitor address in RS232 mode
To access hotel mode press the green button on the remote control and hold for 5 seconds. The following screen will appear
Each monitor can have a specific address e.g. 007 which helps command that monitor individually and will not affect other monitors connected to
a controlling pc.
Address format command
The adressing format command is used for operating multiple monitor sets from a single pc via the RS232 command line. If you set your monitor
address to ‘000’ it will never respond to any addressing command from the pc. If the address from the pc is ‘FFF’, all monitor sets will execute the
command.
The address format command is defined by one command, one line which starts with ‘A’ and ends with carriage return (0x0D). An address is
added at the top of a control command.
Example:
Functional execution command: “A001C05” [CR] means the address is 001 and the control command is C05
Status read command: “A001CR0” [CR] means the address is 001 and the command is CR0
The monitor can set its own address in the hotel option (see above). The address range is 000 - 999, the default address will be 000.
The baud rate indicates the unit transfer speed of data from the pc the the monitor sets.
RS232C SETTINGS
ITEM
SPECIFICATION
Synchronous system
Asynchronous
Transmission Speed
9600 / 19200
Data Length
8 bit
Parity
None
Stop Bit
Flow Control None
1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
(D-Sub 9 Pin) (D-Sub 9 Pin)
CD
RXD
TXD
DTR
SG
DSR
RTS
CTS
RING
N.C.
RXD
TXD
N.C
SG
N.C
RTS
CTS
N.C.
MENU
Hotel mode ON / OFF
On program OFF/ 1~99
Preset ON / OFF
Address 007
Baud Rate 19200
/ AV1-AV3 /RGB/ HDMI/ PC
Hotel
: Select
: Adjust
: Exit
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Functional Execution Command Table
Command
Item
Comment
Toggle (Dynamic, Standard, Eco, Personal)
“---”_means “No Function”
CF DEA RMCN
CF DEA RMCY
CF CLOK OFF
CF CLOK ON
CF DPMS OFF
CF DPMS ON
C92
C64
C76
C75
C74
C73
C72
C71
C70
C30
C0F
C29
C28
C27
C26
C25
C24
C23
C01
C00
Picture
AV1 direct
Wide “Normal” direct
Wide “Full” direct
POWER ON
POWER OFF
Wide “Auto” direct
Wide “Natural” direct
Wide “Zoom 16:9” direct
Wide “Title in 16:9” direct
Wide “Zoom 14:9” direct
Wide “Title in 14:9” direct
RGB direct
AV2 RGBHV direct
AV2 YPbPr direct
AV3 direct
HDMI direct
PC direct
PC Auto adjust
Factory settings
Power save ON
Power save OFF
Child lock ON
Child lock OFF
RC inhibition OFF
RC inhibition ON
Status Read Command Table
Command
Item
Note
“---”_means “No Function”
C** Panel operating time
CR0
CR1
CR WIDE
CR PICTURE
CR SIGNAL
CR CHILD
CR DPMS
Power
Input mode
Wide mode
Picture mode
Signal existance
Child lock
DPMS
On, Standby, Power error,...
AV1, AV2, ..., HDMI, PC
Auto, Normal, Full, ...
Dynamic, Standard, ...
Signal / No signal
On / Off
On / Off
RS232C Command Tables
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TROUBLE SHOOTING
Item
Condition Check point
1
2
3
4
5
6
7
8
9
No power
No power
No power
No backlight
Faulty picture
Faulty picture
No RC
No key SW
Fan faulty
** HINT**
In most cases the problem is caused by the SUB POWER board or COMP
board.
Try replacing them first, then check the LCD panel.
NO LED
NO LED
LED brighter
After power on, once panel lights
then keep black out
No colour, poor picture
Darker / brighter picture etc.
Visible line on the picture
Part of the display is poor
No working of RC handset
No working or the front key Switch
After indication of the display,
then 30 seconds later, come into
standby
Change the FAN
Change the FRONT board
Change the RC or FRONT board
Change the panel
Change the COMP board
>>If not, change the panel.
Change the LCD panel
Check to voltage of KR-3 --- 5V
>>Change the power board
Check the fuse on the FILTER board
Check the connection of the AC cord.
(AC plug and junction part)
Check the voltage of
Housing KQ-2 ----13V
IC6602 ---- 9V
IC6603 ---- 12V
IC6604 ---- 6V
Housing KR-1 ---- 24V
>>Change the COMP or SUB POWER board
** Refer to the power diagram
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IC Descriptions for UK4B
IC1110
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) and pin 14 of SCART 1 (SIS signal). The IC takes a 5V supply and is switched by the
control line SIS.
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.
IC1271
This a large multiway electronic switch, MM1631BJBE. Via the I
2
C 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.
IC1801/1802
PCA9534PW - These are I
2
C expander IC’s. They convert I
2
C commands from IC801 into control lines.
IC1841/1851
These are OP-AMPS used to control the speed of the fans
IC2002/2003
6db AMP/BUFFERS that compensate for internal loss in the YPbPr / RGB / HV loop.
IC2006
RS232 to 5v decoder / encoder. It converts the RS232 signal from K2008 into a TTL signal that can be understood
by the CPU IC2010
IC2007 / 8 / 11
5v to 3.3v logic conversion for the CPU IC2010
IC2009
Reset pulse generator for the CPU IC2010
IC2010
CPU with internal program flash memory. The software version programmed into this device can be found in the
service menu. The RS232 data is converted into I
2
C data by this CPU and fed to the main CPU via KCPA.
All RS232 protocol are generated by this IC.
IC2012
This is a 5v regulator.
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.
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IC Descriptions for UK4B (continued)
IC6600
This is an LA5754 voltage regulator. It provides the 12v supply for the LCD panel.
IC6601
This is a BA33BC0FP voltage regulator. It converts the 5v standby supply to 3.3v.
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 manufac-
turer, 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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