How to enter to service mode AKAI LTA-32C902 troubleshooting and adjustments

AKAI LTA-32C902 - LTA-37C902 - SERVICE MODE AND ADJUSTMENTS 

Enter into factory menu
1. Enter into child lock of main menu in TV mode, press “OK, the password input box will appear;
2. Use remote control to input the follows in order: 7,red key, 9,blue key, then you can enter into factory mode menu. After entering into factory mode menu, sign of the factory menu M will appear.

NOTE:
1.if no especial demand, please do not enter into the 20 th P item(design mode);
2.when tuning the 16 th item ,the storage data will be cleaned off, therefore, if not necessary ,please do not adjust it, the items of index number 1,2,3,4,5,6 are not necessary to adjust.

Adjustment methods for factory menu
1. Select the adjusting item
You can skip to the adjusting items by pressing the number key, also can select the adjusting item in the order of P+/P-.when pressing the number key, if the adjusting item is 1~9,input the corresponding number keys and press down “OK”, if the adjusting items tens digit, input a tens digit. For example ,press number key 8 when adjusting the volume, you can see the color which become green, then press down “OK”, the color of index number turns red, So you already selected corresponding volume adjusting item.
If adjust DVD preset, first input 1,then input 3,you can adjust DVD preset.
2. Adjustment methods
Adjust it according to the operating key in above list. For one act operation ,press OK/V+.
example Auto Color, for some variable add/reduce, Example Volume, press V+/V- .
3. The illuminate of white balance and AutoColor adjustment method
Index 11 is corresponding to manual balance ,press “OK” or “V+” to display three corresponding variable, press “P+/P-”to select, press “V+/V-” to adjust, press down menu key to exit.
The index of AutoColor is 12,press “OK”or “V+” to do color revision, then the adjusted value will display.

4. BBE plus adjustment
Index number of BBE plus adjustment is 22 and 23,adjust it by adjusting “V+/V-”,the value of W270F8E
and W320F8E are set 0X09,but the W370F8E is set 0X0F.
5. Press down the DISPLAY first before switching the program number in factory mode, press P+/P- to switch before the display content do not disappear;
6. All menu functions are on in factory mode, if necessary you can use menu to check the items and effect test.

Factory debug item
1. Auto color revise（ AutoColor）
Firstly finish auto color revise first before factory debug. Revise in TV,YPBPR and PC respectively.

Requisite Meter
PC - one
HD signal source – one

Debug（Revise in TV,YPBPR and PC respectively）
Park the channel in C-3 under TV mode TV, then do AutoColor.
Input color stripe signal in YPBPR and do AutoColor.
Input window signal in PC, the window is white, black signal around.
The result will appear in screen after AutoColor adjustment,make the adjustment results of Rgain Ggain and Bgain close to 0 × 80,if the difference is too great,adjust the value of HWUC_CON(auxiliary saturation),and readjust the AutoColor.

White balance, color temperature adjustment
1. Requisite Meter
CHROMA 7120 color analyze instrument（ or same function instrument,contain color coordinate – chroma diversion card） one
White balance adjusting frock（ request the video output range 0-1V is adjustable,750hm load）one
2. Prepare
A. connect all equipments, switch the condition of LCD TV to AV.
B. Set the picture of LCD TV for standard condition
C. Set the distance of light receiver of white balance from center place of LCD display screen for 15cm +/- 3cm .
D. Make sure that the environmental brightness is below 2cd/mP2P
3. White balance, color temperature adjustment
Before adjusting it, put the first LCD TV in AV condition, and the image in standard condition, white balance adjust frock send the white vertical signal output from video into AV, adjust output range of balance adjust frock, make the brightness of the LCD TV 200±20cd/mP2 P(use CHROMA 7120 color analyze instrument to obtain the brightness ),then fix the video output range of white balance adjust frock(until all the LCD TV are adjusted).
Enter into white balance adjusting item of factory mode, change R,G,B value(try best to adjust this 3 value biggest) .
Make color temperature coordinate value accord with that of the table below (error value within ±4%) ：
SYMPTOMS AND CORRECTION

Symptom One:Display card of PC no image in DVI.
Reason and Resolve: If some display card of DVI can not receive the data when turning on the TV, there is no output; if pull out the DVI line abruptly, there is also no DVI output; Before starting PC, connect the DVI line with LCD TV steadily, So DVI can receive the correct date from DD ( Display Data Channel) when turning on the TV,DDC is in chassis 24LC21.
Symptom Two:No picture but sound, on LOGO when turning on the TV, background light is bright.
Reason and Resolve: Check the connect line in up screen, and connect the line.
Symptom Three: No picture,no sound ,no snowflake in TV mode, but AV is normal.
Reason and Resolve: Check the outside of high frequency (also bus and power supply), there is no problem ,but no output from high frequency, so the tuner is disabled.
Symptom Four:LCD TV can not be controlled.(inc red lamp is on but the TV is off, remote control and local keys can not control the TV ,etc.)
Reason and Resolve:the LCD TV can not work abruptly, power off and turning it on again.

LG LCD TV Backlight blinking problem troubleshooting - LG 60LB7100 Intermittent Backlights

Backlights Blink
• Backlights go OFF.

SMPS Trouble LED blinks 3 times then only 2 times.
Note: This panel was a Refurbished panel from parts.

Panel P/N: CRD31515701
TV ran for 4 days, 24 hours a day until symptom showed up.

The backlights would begin to blink. Usually 4 to 6 times then they would shut off completely.
• SMPS LED was blinking 2 times indicating DC-to-DC converter problem.
• However, when watching the SMPS trouble LED while the backlights were blinking, it blinked 3 times once or twice then it went to 2 times after the backlights went off. 3 times indicating Open LEDs.
• While Backlights were blinking: Reading the test points EL50-EL54 EL62-EL67 on the SMPS for backlight grounding signals, all but two test points were reading approximately 4V. But two of them were reading 0V, (EL55 and EL64). Backlight Power was 70V.
• While Backlights were off: Reading the test points EL50-EL54 EL62-EL67 on the SMPS for backlight grounding signals, all but two test points were reading approximately 7V.
But two of them were read 0V (EL55 d EL64). Backlight Power was 56V.
• Note: In this model there are only 6 backlight drivers. So two test points are tied together per/driver.

Reading the test points EL50-EL54 EL62-EL67 on the SMPS for backlight grounding signals, all but two test points were reading approximately 6V. But two of them were reading 0V, (EL55 and EL64).
Note: In this model there are only 6 backlight drivers. So two test points are tied together per/driver.
Example: EL62 and EL54 are tied together, EL55, EL64 are tied together, etc
Note: When the Backlights are “off”, the reading are 2V on good LED bars and “0V” on the defective bar.

LED (LD701) would blink 3 times while backlights were blinking and 2 times after the backlights turned off.

Note: LED (LD701) blinking 3 times indicates an open backlight LED feedback line.
Check the Test points EL50-EL54 EL62-EL67 for “20V” volts. This would indicate an Open LED driver.
Using a 100 ohm resistor, one end to ground, touch the other end to the Test Point pin that has “20V”. If the backlight comes on, the panel is good, SMPS is bad.

After disassembling the panel, we found that the connector to the bottom LED Bar was intermittent. The connector is attached by simply pressing it down onto the connector. The Red wire (B+) to the bar was intermittent making contact with the connections on the LED Bar. On all “A” bars, LED B+ arrives on the (-) marked pin on the connector. On all “B” bars, LED B+ arrives on the (+) marked pin.

This connector is inserted by laying it over the connector on the board and pressing down to press it into place.  For those unable to do panel disassembly, panel replacement is necessary.

The best repair method for this would be to remove the wires and solder them directly to the LED bar.

Avoid solder bridges. Cut the crimped connector off the wire first.
For permanent fix, you should do this to all “outside” connectors on the right and the left side of the LED Bars.
Note: You may need to un-tape the wire harness to allow for slack. Be sure to re-tape after repair.

Examine each LED to make sure they have not become un-bonded. “Do not life by the LED lens”. Over time, this could cause overheating.
if they have, press down on either side of the LED for about 60 seconds to rebond.  Do not press down on LED.

How to disassemble BBKV3N,V3H,V5N,V5H pocket TV

All operations must be with strict anti-static measures. Operators must wear anti-static gloves or wrist ring; electric screwdriver must be grounded effectively and articles, such as nippers must be removed static before using Use cuspidal forceps to take out the LOCK button

Insert the forceps into the lock hole and then prize up one corner of the glass.

Use a slice with thickness about 0.1mm to in sert into the gap of the glass prized up and then peel off glue of the glass slowly to tale out the glass. Pay attention not to damage touch button FPC.

After peeling off glue of the glass, use nails to take out the glass.

Insert the 4 special slice clasp instruments into the relevant position of the 4 clasps.

Use the special hook tool, shown in the picture,to remove the middle casing.

Remove FPC flat cable clasp and then use forceps to take out FPC flat cable.

Use electric screwdriver or “+”-shaped screwdriver to take out 2 screws of main board.

Use iron to weld to separate the batter and buzzer lead wire on main board.

Take out main board components Take out battery components.

Take out the stainless steel cover board on rear side of display screen.

Take out display screen components from the direction shown in the picture.

Lenovo laptop disassembling - Lenovo ideapad 710S – How to remove the battery pack – How to remove base cover

To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate power supply checkout:
“Checking the AC adapter”
“Checking operational charging”
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the following figure:

Note: Output voltage for the AC adapter pin No. 2 may differ from the one you are servicing.
3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator or icon is not lit, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack. If the charge indicator is still not lit, replace the system board.

Restore of factory default
The Lenovo ideapad 710S-13ISK computer comes with pre-installed OneKey Recovery System.In order to save application files and the initial backed up files of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped. If you need to restore the system to the point of your first boot up, just enter Lenovo OneKey Recovery System and run System Recovery.

Disassembling procedure 

Base cover

Remove the rubber. Remove the screws 1. Then remove the base cover 2.

Battery pack

Disconnect the battery connector 1 and remove the screws 2.

Lift up and remove the battery.

PCI Express Mini Card for wireless LAN

Disconnect the two wireless LAN cables (black, white) 1, and then remove the screw 2.

Remove the card in the direction shown by arrow 3

In step 1, unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159), or pick up the connectors with your fingers and gently unplug them in the direction shown by the arrows.

Notes: The wireless LAN card has 2 cables in step 1. The wireless LAN card in some models might have 3 cables in step 1.

Lenovo Laptop disassembling – Lenovo ideapad 500S

How to test the AC Adapter Voltage – How to remove the LCD – How to remove the built in battery - Lenovo Laptop disassembling – Lenovo ideapad 500S

 To verify a symptom, follow the steps below:

1. Turn off the computer.

2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate power supply checkout:
“Checking the AC adapter”
“Checking operational charging” Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
To check the AC adapter, follow the steps below
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the following figure:

Note: Output voltage for the AC adapter pin No. 2 may differ from the one you are servicing.

3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.

Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

Perform operational charging. If the battery status indicator or icon is not lit, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack. If the charge indicator is still not lit, replace the system board.

Restore of factory default
The Lenovo ideapad 300S-14ISK/ideapad 500S-14ISK computer comes with pre-installed OneKey Recovery System.In order to save application files and the initial backed up files of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped. If you need to restore the system to the point of your first boot up, just enter Lenovo OneKey Recovery System and run System Recovery.

Disassembling the laptop 

Base cover
Remove the screws 1. Then remove the base cover 2.

Battery pack

Detach IO board connector in the direction shown by arrows 1 and 2.

Unplug the battery connector 3 and remove the screws 4. Then remove the battery pack in the direction shown by arrow 5.

Hard disk drive

Remove the frame fixing screws 1.

Remove the hard disk drive in the direction shown by arrow 2

LCD unit

Remove the screws 1. Detach LCD connector in the direction shown by arrow 2.

Open the hinges 3, then remove the upper case from the LCD unit in the direction shown by arrow 4.

How to disassemble HP envy laptop – HP ENVY 14

Step by step disassembling procedure of  HP ENVY 14 –– How to remove the keyboard – How to remove the top cover – How to remove the battery

How to remove Battery

Before disassembling the computer, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
Remove the battery:
1. Slide the battery cover release latch (1). (The battery cover releases forward (2)).

2. Remove the battery cover. The battery cover is included in the Door Kit, spare part numbers 608384-001 (for use only with standard computer models) and 629879-001 (for use only with Beats Edition computer models)

3. Slide the right battery release latch (1) to unlock the battery.

4. Slide and hold the left battery release latch (2) to release the battery.
5. Pull the battery tab (3), and then remove the battery from the computer.

How to remove SIM

Before removing the SIM, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
Remove the memory module:
1. Press in on the SIM (1) to release it from the SIM slot.
2. Remove the SIM (2) from the SIM slot.

How to remove Mass storage device

Before removing the mass storage device, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery

Remove the mass storage device:
1. Remove the four Phillips PM2.0×3.0 screws that secure the mass storage device to the computer.

2. Use the Mylar tab (1) to slide the mass storage device to the right and disconnect it from the system board.

3. Lift the mass storage device (2) out of the mass storage device bay.

How to remove WWAN module

Before removing the WWAN module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the hard drive
Remove the WWAN module:
1. Disconnect the WWAN antenna cables from the terminals on the WWAN module.

2. Remove the two Phillips PM2.0×3.0 screws that secure the WWAN module to the system board. (The WWAN module tilts up.)

3. Remove the WWAN module by pulling the module away from the slot at an angle.

How to remove RTC battery

Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the memory module/wireless module compartment cover
Remove the RTC battery:
1. Disconnect the RTC battery cable from the system board.

2. Remove the RTC battery from the system board. The RTC battery is attached to the system board with double-sided tape.

How to remove Top cover

Before removing the top cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the memory module/wireless module compartment cover
Remove the top cover:
1. Remove the eight Phillips PM2.5×7.0 screws that secure the top cover to the computer.

2. Remove the three Phillips PM2.0×3.0 screws that secure the top cover to the computer in the battery bay.

3. Turn the computer right side up, with the front toward you.

4. Open the computer as far as it will open.
5. Lift the front edge of top cover (1) until the TouchPad cable is accessible.
6. Release the ZIF connector to which the TouchPad cable is attached, and then disconnect the cable
(2) from the system board.

7. Slide the top cover (1) forward until the power button board cable, keyboard cable, and keyboard light cable are accessible.

8. Release the power button board cable (2) from the fan surface. (The power button board cable is attached to the fan surface with double-sided tape.)
9. Disconnect the power button board cable (3) from the system board.
10. Release the ZIF connector to which the keyboard light cable is attached, and then disconnect the
cable (4) from the system board.

11. Release the ZIF connector to which the keyboard cable is attached, and then disconnect the cable
(5) from the system board.

How to remove Keyboard

Before removing the keyboard, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the memory module/wireless module compartment cover
6. Remove the top cover
Remove the keyboard:
1. Turn the top cover upside down, with the front toward you.
2. Press on the back of the keyboard (1) through the opening in the top cover until the keyboard disengages from the top cover.

3. Release the keyboard light cable (2) and the keyboard cable (3) through their respective openings in the top cover.

4. Turn the top cover and keyboard right-side up, with the front toward you.

5. Swing the rear edge of the keyboard (1) up and forward until it rests at an angle.
6. Slide the keyboard (2) back at an angle until the tabs on the front edge of keyboard disengage from the slots in the top cover.

Akira CT-14TA9CP- How to enter the service mode, adjustments, factory default data – schematic- LA76810, LC863320A – chassis SS1

A = PAL/SECAM/NTSC/NTSC P/B

R.N = PAL/SECAM/NTSC P/B

CP = PAL/NTSC P/B

B+ Voltage Alignment

Set and connected all the points.

Locate the RP551 alignment VR location.
Use digital multi-meter to measure the B+ voltage.
Switch on the TV chassis and connect by Philips pattern for alignment.
Align the Rp551 VR with the digital multi-meter to the required spec voltage110 Volt +/- 0.5V,(14”&21”) and 129.5Volt +/- 0.5V (25”/29”/34”).
Alignment finished, apply glue onto RP551 VR. After glue re-check the B+ voltage to ensure the B+ voltage is within spec of 110V(14”&21”) and 129.5Volt(25”/29”/34”).

Alignment Mode and Factory Setting
Switch on the TV chassis and change to AV mode position.

Press “Factory mode” key to enter “ factory alignment mode”. Use “CH +/-“ to select the alignment item, and use “V +/-“ keys to do adjustment to you requirement.

IF Voltage Adjustment
Setting-up – set-up the Philips 5418/5518 pattern generator, AV out frequency to 38MHz, signal level to 70dB +/- 2 dB.
IF set-up 38MHz signal connected with coaxial cable with 1 capacitor of “0.01uF” and connect to main chassis IF” / ground points.

Tuner must not insert with the antenna.
Switch on TV chassis, adjust the IF coil “T110” and check the Ch 2 brightness line for the range change from 0 to 5V. Readjust the voltage to meet Ch 1 position.
Note: LA76810A alignment only on VCO (T110) not others.

Vertical Line – Pin–Cushion Adjustment
Receive Channel 7 colour bar.Adjust the PR301 for vertical lines pin-cushion to 1 straight line, adjust the PR302 for horizontal phase to spec requirement.

Vertical Line and Size Adjustment:

Receive crosshatch pattern, use factory mode remote control to press “factory mode” key for adjustment. Using CH +/- keys for V. Size and V. Line selection.
Use V +/- keys to adjust the picture line requirement and the size to spec.

RF AGC Adjustment
Receive channel 13 of picture pattern. Adjust the AGC at 60 dB for no picture noise. 100 dB picture should not be distorted and the VOS do not have unstable condition

Checking the Electrical Function

Connect the power cord and connect the signal to RF input.

 Check the power supply whether OK or not. Switch on the TV set and the LED is on. Switch off the TV screen and should not have CRT spot within 3 sec.
Receive the channel 1 for mono-scope pattern to check the picture focus and the round circle should not be distorted. The Center position, and VOS line/size are within spec. Check the brightness, contrast and color condition. Check the convergence, picture must be clear, focus OK and white balance are OK. Also check the complete screen picture quality. High voltage condition OK and the Screen picture must be OK.
Check all the functional keys must be working well.
Receive color pattern signal and the system color. (PAL/SECAM/NTSC) Check the power main on/off switch, brightness, volume, color, contrast and tint. The picture quality must not have color noise, unbalance size and distorted condition.
Check the sound quality standards, Volume up/down are OK to spec, and sound output.
Ensure the sound output is not distorted and noisy. No interference for DK/BG/I/M.
Use remote Control Unit for all types of function check and ensure OK.
Check the words display condition.
Shock test and make sure the picture and sound are not distorted and shifted

Use strong and weak signal to check the color picture condition. After adjust the signal level to 35-40 dB and the color should not gone. The picture and sound must be OK. At 60 dB the picture should not have snow noise.
Ensure the factory mode setting are set. Set-off the factory mode function and last switch off the TV set.
All the “NG” sets must send for repairing and recording for reference.
Check the AV input and output the picture and sound must be OK

Reliability Aging Test:1st lot of production sets. Sampling 20 sets for aging 7 days continues test with color signal in. Normal production sets must be age for 1 day.

Mechanical Inspection
Inspect all glue are firmly placed.

Check all screws are tightened, no missing and loose.
Check all the connectors are fully located onto the chassis base.
Check all the safety components are firmly located onto the chassis and no damage.
The TV internal side should not see any excess metal materials.
Check all the cable and wire are OK in-used.
Check the FBT and switching transformers not high mounting. The big capacitors are not slanting and high mounting.

High Potential Testing:

Set the mega-meter is set in position.(Insulation tester)

Set the meter to DC500V.
Use the meter probe onto the tuner body and the power cord on connector socket.
Switch on the button and test the insulation performance and the reading at 2/3 position.
Insulation spec must over 9.0 Mohm. if not reject.

Note: Everyday work check the high pot. Condition as 3100V, 10 mA, 5 sec are OK.

Safety Check
High voltage checking. Use high pot tester and set the tester to 3100V, 10mA and ensure the AC/DC switch is in AC position. Set the tester to 10mA and timer to 5 sec.
Checking methods.
connect the power cord into power socket.
the high pot tester gun pointed at metal part of TV set body.
switch on the switch to test the high electric power.
connect with high voltage within 5 second and remove the tester gun point.

CTV SET ALIGNMENT - FACTORY SERVICE MODE 

“Enter” and “Leave” the Factory mode adjustment methods:

 Enter factory password: (use normal Remote control unit)

Set TV as RF condition and press remote control “PROG” key and follow by “6”, “4”, “8”,“3”

Repeat the same step of “1.1.1.” to enter into “White Balance” adjustment condition
Repeat the same step of “1.1.1.” to enter into “Factory mode” adjustment condition
Repeat the same step of “1.1.1.” to enter into “Factory mode” setting condition
Repeat the same step of “1.1.1” to leave the factory mode function

Direct Enter:
Use Factory mode Remote control unit, press the “factory” key to enter into “factory mode” function. Press one more time “factory” key to enter “White balance” adjustment condition, press one more time to enter the adjustment condition. Press One “factory” key to setting up our requirement spec. Last press once “factory” key to leave factory mode function.

Use “factory mode” for TV ageing, 2nd step is to align the White Balance in good condition. 3rd step adjust the required electrical specification. (The function adjustment are 20 selection) Others function of adjustment are 39 items, and you can use “P+/P-“ key and “V+/V-“ key for selection and adjustment.

Setting of company logo:
Switch on the TV set and set the TV in AV mode, Press Remote control “DISP” key and the TV screen will display “AV” and follow by presetting the Numeric key “6”, “4”, “8”, “3” to enter the company logo setting.
Press the “P+/P-“ key for selection of function and press “V+/V-“ key for adjustment. Press “>*<-“ key to change or select your requirement.
Logo setting 1st row that come with 4 kinds of setting:
Logo setting 2nd row that come with 2 kinds of setting:
1st turn off the display, 2nd turn on the display (display the word setting of maximum 10 words).
When the 2 rows of words are display on the TV screen, and you can check the words positioning. Not too lose to each other or the words are not clear to display on the screen. Reset the logo words from the logo setting factory mode.

Factory default data

Full schematic

CE20LM5 UK6-A Sanyo Color Monitor-How to enter the service mode, adjustment details

Television system: System I;  Color system: PAL/NTSC4.43 (PAL/NTSC4.43/NTSC3.58 IN AV MODE)

Service Menu

With the set turned ON, press the following sequence of buttons on the remote control:- [MENU, 3, 6, 0, 9]

The main service menu will be displayed.

Model Option:

B/S [Betting Shop]:  For models fitted with SCART and TUNER

CCTV [Closed Circuit TV]: For models fitted with BNC IN/OUT

 Changing the model option will automatically alter some of the settings to suit
the requirements of the application.

Also some menu's & options will not be accessible in the CCTV mode

Hotel Menu

Hotel mode allows the owner to restrict the functionality of the set so that the user may not tamper with settings such as channel tuning.

Volume max' allows the owner to set a limit to the maximum sound output to prevent noise disturbance.

To enter the Hotel Menu press & hold the GREEN button on the remote for about 5 seconds,
the Hotel menu will appear at the bottom of the screen.

Turn ON to disable RF channel tuning facility.

set value between 0 and 100 to limit the sound output available from speaker set the desired input or channel that will appear at switch on.

Use P+ / P- to select item and Vol+ / Vol- to change data.

Option Menu

This menu is used to enable or disable certain functions availible in the bios.
To enter the Option menu press and hold the GREEN button on the remote for about 5 secs, first the HOTEL menu will appear. Now press and hold GREEN for a further 5 secs, now the OPTION menu
will appear. Only the highlighted items may be accessed by the user.

Use P+ / P- on the remote to highlight the desired item, then use Vol+ / Vol-- to change the state.

Other Menu

This menu contains some items that should not normally require adjustment.

Use P+ / P- to select item & Vol+ / Vol-to change value.

ADC Calibration

The ADC ADJ menu is accessible from the main service menu.

ADC calibration is performed automatically by pressing Vol + key whilst the ADC menu is displayed.

A test signal of RGB colour bars must be applied to the SCART input for this adjustment to be performed. If the result is successful, OK will be displayed at the bottom of the OSD.

It is not possible to manually adjust these values.

Press Vol +to begin auto Calibration.

This adjustment is not required for the CCTV model.

Color Temperature

The Color Temperature menu is accessible from the main service menu and is used to adjust the pictures' white balance.

Connect a 100% white test signal to either SCART or Aerial input and set picture mode to STANDARD
Enter the service mode & select Color Temperature option.

Keeping one color constant, adjust R, G, B Gain value to achieve a pure white image.

If a suitable color analyzer is available adjust the co-ordinates to X= 0.290, Y= 0.290 (+/- 0.01).

If the Grey scale suffers from a predominant tint use the R, G, B Offset adjustment to neutralize, in this case the white level adjustment should be re-checked.

Use P+ / P- to select item and Vol+ / Vol- to change value.

Picture Mode

The predetermined settings for the fixed picture modes can be adjusted using this Menu.
Select the PIC Mode desired to be changed using P+ / P- and Vol+ / Vol-change the value as required.

Source: SCART
PIC Mode: Standard
Contrast 42
Brightness 48
Color 45
Sharpness 42

Text Brightness

The three predetermined levels set for Teletext brightness control can be adjusted in this menu.

Use P+ / P- to select item & Vol+ / Vol-to change value.

MAX 63
MID 42
MIN 21

Factory Reset

In certain circumstances it might be useful to restore the memory to the default conditions
preset within the system bios.
To do this enter the main factory menu and select the "Factory Reset" option.
Press vol+ to proceed with the initialization.
This reset does not affect the ADC calibration or the White balance adjustment settings,
nor does it clear the stored RF channels.

OPTIONS & SETTINGS

The table below shows the correct factory settings for this model.
Some of these items may need to be restored if a ‘Factory Reset’ is performed.