BOOG DPS21K5 AND ROCKFORD FOSGATE CAR AMPLIFER SCHEMATIC DIAGRAM

 BOOG DPS21K5 schematic

USED Ics: TL074, IRS2092, IRFBA90

ROCKFORD FOSGATE AUTO AMPLIFIER – 100+100 WATTS -  SCHEMATIC

USED Ics: LM833SM, BUZ11[FET], TL494SM, IRF9540, IRF540H

PHILIPS 39PFL5046, PHILIPS 42PFL3300 , PHILIPS 32PFL3200 LCD TVS – POWER SUPPLY SCHEMATIC DIAGRAMS

 

 Philips 32PFL3200 POWER SUPPLY (SMPS) Schematic diagram – 715G4831

Philips 42PFL3300 POWER SUPPLY (SMPS) Schematic diagram – 715G4922

715G3936 & 715G3967

Philips 39PFL5046 POWER SUPPLY (SMPS) Schematic diagram

TCL 50P65US SMPS POWER SUPPLY AND AUDIO OUTPUT SCHEMATIC DIAGRAMS

 

TCL 50P65US SMPS SCHEMATIC

TCL 50P65US Backlight Schematic

TCL 50P65US-PSU connector 12Volt and connector 12Volt to 5Volt

TCL 50P65US-12VPSU TO 3.3V STB and 12V TO 1.5V CPU POWER

TCL 50P65US-5V TO 1.10V Core Power

TCL 50P65US-AD82587D – Audio Output Power schematic

TCL 43A8000 LCD TV – HOW TO UPGRADE THE USB, USB KEY UPDATE, MENU UPGRADE, SMPS BOARD SCHEMATIC DIAGRAMS, TROUBLESHOOTING AND DIAGNOSIS

USB Upgrade

1. Rename the upgrade file V8-T841T01-LF1V021.img into install.img
2. Put bin file to the root of the Udisk, and plug in TV set through USB.
3. AC disconnect.
4. AC connect and long press OK button on panel, wait 10 Seconds and you see upgrade process is shown on the screen.

MENU Upgrade
1. Rename the upgrade file V8-T841T01-LF1V021.img into install.img
2. Put bin file to the root of the Udisk, and plug in TV set through USB.
3. Go to factory menu
a) Press settings button under HDMI source
b) Picture & Display->Picture Adjustment-> Advanced Settings->Brightness->Contrast
c) press “1950” on Contrast
d) other->USB Update
4. Press Main update, it will power off and upgrade in 10 Seconds you will see the upgrade process shown on the screen.

USB key Update
1. Put the Key file as below to the USB root directory, and connect to TV, it will update the TV Key.

2. After update the keys, it will display “OK” on screen
3. Done.

SMPS (Power supply board) schematic

Trouble shooting

No power LED, RC or Key cannot turn on TV. Power LED no light - no change.

Back light is OK, sound is OK, but no picture.

Power LED logic OK, sound OK, but no picture (Different from No Display).

One or All signal source without sound.

One or several source no function.

Abnormal Display.  OSD NG or picture NG.

No tuning channels.  DTV or ATV no Channels.

P mode on and burning mode

 

TCL 39S62-NT63EP2-LA HOW TO ENTER SERVICE MODE, SERVICE ADJUSTMENTS, HOW TO UPGRADE, UPGRADE AND ABOUT TEST AND ALIGNMENTS

 

These chassis are designed for European LCD TV markets Ready for IPTV. The main chip is from novatek NT72563 series with embedded Linux core and supports below features matrix:

 

NT72563 D2900

NT72563 P6

Manufacturing Connectors Pin out

ISP-UART - P15   Pin1: NC.  Pin2: RXD.  Pin3: TXD.  Pin4: GND.

USB to UART Bridge Adapter (FT2232D chipset series)

To communicate with TV product for debugging, adjustment and so… it’s required suitable 0.5V Serial Interface like following snapshot (further details are described on below sections):

Test and Alignment Specification for NT63 Series (v0 01) 170612

All tests and measurements mentioned hereafter have to be carried out at a normal mains voltage (220 ~ 240 VAC)
All voltages have to be measured with respect to ground, unless otherwise stated
All final tests have to be done on a complete set including LCD panel in a room with temperature of 25+/-7°C
The Picture Performance assessment such as White Balance (luminance and colour temperature) has to be performed into subdued lighted room after at least 45min of warm-up in order to avoid any temperature drift influence (colorimetric vs. time)

PCB-SKD Assembly: Test & Alignment

Pre-Conditions and DC/DC Check
Before power-on, please check the board according to the relevant block diagram and circuit diagram, and make sure that no serious issue or mistake can destroy the board. For example, the output of DC/DC and LDO should not be shorted to ground.
Supply a suited voltage and power-on, then check the voltage according to the relevant block diagram, circuit diagram and voltage specification.
For example, check SoC voltage (3V3, 1V8, CORE_1V2, 5V, 5VSTB, etc.), DDR voltage (DDR-1V5), audio amplifier voltage (12V), etc...
Measurements should fulfil specification within ±5% tolerances.

SW Image download
Download the latest release SW from below FTP server:
Link: \\10.120.99.200\
Username:
Password:
Folder: \\10.120.99.200\Software-release\Debugging-TS-SW\Novtek\NT563

LR or PR step. ---Only test
In case of starting from blanked flash / eMMC, it’s necessary to use “Blank upgrade” to update the SW.

MP Step
In case of starting from blanked flash, it’s necessary to write “ V8-N563T01-LF1VXXX _emmc_writer.bin” file via factory copy in advance.

OAD Stream
To manage quicker mass reflashing on predefined DVB Channel, some licensed IBL tools ('xxx2lli.exe', 'lli2dsm.exe',dsmmerge.exe …) from Intel byte Inc. might be necessary to create appropriate DVB SSU image. Over some predefine settings such as repeated data block insertion, null packets size, … that are controllable in configuration file, here below are mandatory OUI entries structure to prepare DSM-CC carousel image format:

export CUST_OAD_OUI export CUST_OAD_HW_MODEL export CUST_OAD_HW_VERSION export CUST_OAD_SW_MODEL export CUST_OAD_SW_VERSION

0x001C50 0x5395 0x0000 0x0001 0x00..

OAD reflashing is managed within 4 steps operation: multiplex detection, DVB transfer, flashing and warm-start.

UART & IR Parser
To use both UART and/or IR parser, TV has to be set in Factory mode with its USB port well connected to suitable UART device or an IR emitter device correctly facing up TV (see below “Product Assembly - section 2.0” how to activate “Factory key”).
The UART parser engine is enabled by sending following command “0xE2” from host to TV within following presets 115200/8/n/1.
Once initialized, “PS” caption is toggle displayed on bottom left screen (“S” like Serial).
To communicate with TV depending on SIACP revision layout implementation, you need to fulfil UART/IR commands protocol and format described on enclosed SIACP requirements document.

Project ID Modification
There are different IDs stored in the eMMC depending on different Panels settings and Models features, but there’s only one key branching Project ID that includes all. So, it’s not recommended to modify Panel ID with Hyper terminal as other ID features may not change.
To modify Project ID, you need to go through “Factory menu -> Other -> Project ID -> Project ID”, then spin left or right with RCU “◄/►” keys to chose suitable ID (Project name is dynamically refreshed).It is necessary to press “OK” key for saving the setting.

“How to change Project ID with RCU”

See below is the Project ID table for reference:

Functional Test
Once the boards (chassis, KB, IR, PSU…) and the panel are well interconnected, plug all external generator devices to relevant below inputs/outputs using respective test patterns format to check picture and sound quality:

Audio tones can be defined by the factory (ie: 1KHz & 3KHz, sweep …).

Picture video formats can be changed by the factory according to their own standard.

AD Calibration Test
As the A/D self-calibration mechanism is built-in Soc, there’s no any ADC to perform.

DDC & EDID & T-Link Test
The E-EDID data structures are according to VESA Enhanced EDID 1.3 (and EIA/CEA-861B for HDMI). CEA Timing Extension structure has been extended to support all 3D capable timings.
All HDMI structures have their own BIN profile which are part of main SW and uploaded at power-on into soc chipset:
For EDID check, it’s needed to check whether the correct EDID is downloaded by checking corresponding EDID NVM Checksum or read them out to check bit by bit if it is in line with the released EDID bin file.

HDCP Test
For HDCP compliancy, it’s needed to check whether the HDCP key has been well set by connecting suitable generator.

CI+ Key Upgrade, Activation and Test

See “How to upgrade CI Key using USB”, “How to upgrade ESN Key using USB”, “How to upgrade HDCP key & HDCP2.0 key using USB”

LAN and WLAN Test (MAC address and Device or User ID codes)
Here are some representative codes examples:

MAC Address Upgrade (IPv6)

MAC can be set using UART commands described on enclosed SIACP requirements (rev. v3.9).
Writing MAC command <0xB3>, Data length <6>, Data type <HEXA> (see below command example from above MAC code) <AA 0B B3 5C 36 B8 A8 9D CC 36 78>

Device ID (DID)

Purpose is to allow Other Newtork Download (OND) and further specific Services via dedicated abroad portal (UK tbc).4 At final, when TV may ask for portal connection, there’ll be Device ID matching control sent by host (TV client) to ensure total integrity.

For such, specific DID (40 bytes) needs to be paired and overwritten into memory for internal client encryption.
All DID and MAC codes have to be download from portal local service via suitable factory workstation LAN system.
Then during production lot, it’s necessary to send/write all those codes to each TV.
DID codes can only be set using UART commands described above on enclosed SIACP requirements (rev. v3.9).
 Writing Device ID command <0xB2>, Data length <32>, Data type <ASCII> (see below command example from above DID code)
<AA 25 B2 42 45 34 46 32 35 35 42 42 44 31 30 36 42 43 38 46 38 30 36 41 45 34 35 36 33 35 30 44 39 31 46 48 93>

LAN Test

A rough LAN test can be done by connecting DHCP server to TV’s RJ45 and check that IP, subnet mask, DNS, …
addresses are visible on “Settingsà NetworkàInternet connection(On)àIP settings”.
More in-depth test can be performed faster using suitable UART/IR commands following SIACP requirements. SW will internally manage Network ID (NID) flag controlling all MAC/DID/UID integrity to facilitate PA screening further.

It’s not necessary to check video and audio from DLNA server.

Factory Menu
Follow the below steps to pop-up the Factory menu in case of “Factory hotkey” is disabled:
Press RCU “MENU” key to display Setting menu
Select Picture
Scroll down to “Contrast” item
Press the subsequence RCU keys “9”, “7”, “3” and “5”
In case of “Factory hotkey” is enabled, just press RCU “Return” key to pop-up again the Factory menu.
The status of “Factory Key” can be changed in “Factory Menu->Hotkey”
Press RCU “OK/►” key to enter the submenu.
Press RCU “Menu” key to go back to the root menu.
Press RCU “◄/►” key to change the values.
Press RCU “OK” key run the function.
Press RCU “Exit” key exit the Factory menu.

Factory Captions Description
While “Factory hotkey” is enabled, there’s some toggled display information (~2s) relative to SW, Project ID, CI+, Network ID to facilitate 100% quick screening without accessing to whatever else menu:

Main SW Ver
Project ID (ID)
ERG(PVR)
CI Key Activation flag (CI+ key)
MID(Internet infor for factory)
P (Production/Factory mode flag) / S (Factory UART Parser mode flag) / W (Warm-Up mode flag)

Warm-up Test
Following TCL standard and practices, it’s required minimum 15min of Warm-Up that can be considered as Burn-In.
Additional Aging for White Balance alignment is no more necessary due to consistent Picture Performance with Cloning usage.
This function is accessible by selecting “Factory menu àWARM UP”, pressing RCU “OK/►” key and then leaving Factory menu by pressing “Exit” key. To release/disable Burn-in mode, it’s just required to press “Menu” button from local keyboard. Other faster methods via UART/IR commands are available on enclosed SIACP requirements (rev. v5.4).

White Balance Touch-Up (Golden sample)
As some colour coordinates discrepancies can be noticed from panel batches to others, it may necessary to perform slight touch-up.
For Colour temperature adjustment, switch TV on leading HDMI input where should be connected suitable generator providing following format 1280x720p@60Hz test pattern. A 32 steps grey scale is recommended to assess relevant calorimetric tracking and low/high light saturation points.

Ensure that TV’s picture enhance is off.
Ensure that TV is in Factory mode to access to ”White Balance” adjustment submenu, then scroll down to toggle off “Pic. Enhance” flag.
WB Normal is the first mode which is adjusted in HDMI source， the next are HDMI warm and cool mode.
Warm and Cool Tone are relatives to Normal mode. WB adjust need to fix default G Gain .Offset registers needn’t to be adjusted.
“Gain” registers set need to be adjusted at 70IRE.

Targets and Tolerances for all inputs
(According to company uniform LED color temperature standard of panel)
The measured and adjustable parameters should be mainly “x”, “y” coordinates.
The White Balance alignment should be performed using a well calibrated and contact less analyzer (ex: Minolta CA210 or CA310). The analyzer may not touch the screen surface, and measurement must be performed in a dark environment keeping the probe(s) at 90+/-2° from the panel centre.
The results should fulfil specification for each TV set offered by R&D and below tolerances::

Important: If measurements are performed on whatever else LED panel with Minolta CA210, it’s required to calibrate additional channel (ex: CH01) using relative following offsets (CH00 remains for CCFL panel): +0.002 for “x” and +0.012 for “y”.

Cloning
Once a TV is well aligned and prepared (channels maps, volume, picture presets…), user can prepare golden clone image that can be copied on demand to all further TV production lot of same TV. To access cloning function, you can select “Factory menu àUSB Clone && Update”, Scroll down to “TV to USB” or “USB to TV” and press RCU “OK/►” key to process. 4 BIN images will be created, overwritten or read on USB stick (pen drive) depending on chosen template like following: “database\database\***.db”. These files need to be used strictly with MT5655 SoC platform as depending on SW structure.
Other faster access methods via UART/IR commands are available on enclosed SIACP requirements.

High Pot and Insulating Resistance Tests
At the end of the process, a “High Voltage” and an “Insulating Resistance” tests are required to fulfil Safety Electrical requirements (CEI 65065).
High Voltage Withstanding requirements ▪ Insulating Resistance requirements
“Voltage” > 3500 VAC - “Voltage” > 500 VDC
“Max Leakage Current” > 10 mA - “Threshold Min” > 4M Ω
“Test Time” > 3 sec - “Test Time” > 2 sec

SHOP-END Test
At final process stage, it’s necessary to perform “Reset shop” before any packing to leave Factory mode and restore User default presets.
This function is accessible by selecting “Factory menu - Reset Shop”, then pressing RCU “OK/►” key. Other faster methods via UART/IR commands are available on enclosed SIACP requirements.

A password might be required in case of Parental Control function is locked, use default “1234” password or “0423” super password to clean-up existing ones if forgotten.

“How to upgrade SW FLASH using Blank upgrade”
Download boot bin “ tcl_m1v1_eu_secure_emmcboot.bin” & blank upgrade main software“upgrade_loader.pkg” from the software website.
Connect UART interface to suitable manufacturing TV input connector, upgrade boot bin first to blank IC.
1) copy all files under the directory to the root directory of the u disk..
2) Serial port with USB 3.0 port, USB flash disk to connect USB 2.0.
3) Locate the p901 port on the motherboard ( near the high frequency tuner ), short with tweezers or other tools.
4) Ac on the AC, the following serial port shows that is in the air, tweezers and other tools to remove, do not need to be short.

After finish update SW, TV will reboot automatically and please remove USB key.
Remember to perform “Factory menu - Reset ALL“ and “Factory menuàReset Shop“, and then press RCU “OK/►” key

“How to upgrade main software using USB”
Copy the MAIN SW BIN image “V8-N563T01-LF1Vxxx.bin” into USB stick (pen drive) root path.
Name “V8-N563T01-LF1Vxxx.bin” as “update.zip”, please delete other xxx.pkg files from USB stick.
(Make sure the USB remaining available storage is more than 1GB)
Plug USB stick to the TV.
Power on TV by AC, at the same time press “power on” key for 10s, TV will update SW automatically.
When reflashing is successful, TV should restart automatically (about 4min).
Remember to perform “Factory menu - Reset ALL“ and “Factory menu - Reset Shop“, and then press RCU “OK/►” key.   Finally, restart the TV.

How to upgrade main SW using USB and RCU
Power on TV.
Copy the SW BIN image “V8-N563T01-LF1Vxxx.bin” into USB stick (pen drive) root path.
Plug USB stick to the TV. Option-->settings--> Support--> Software update -->By USB. TV will find Vxxx and please do “update”.
TV will update SW automatically, and show some notes on TV.
When reflashing is successful, TV should restart automatically after ~4min.
Remember to perform “Factory menuàReset ALL“ and “Factory menuàReset Shop“ and then press RCU “OK/►” key.
Switch off TV by removing AC cord. Reconnect AC cord to restart TV.

“How to change Project ID with RCU”
 Process following subsequence IR codes to change projectID: 062598+MENU+xxx (xxx:ProjectID, ex: 001)
 If it works, the TV will restart automatically.

“How to upgrade CI+ Key using USB”
Create a new folder named “CI+KEY” on USB stick (pen driver) root path.
Copy corresponding “*.key” files into CIKEY folder.
Under CIKEY folder, create a new folder named “backup” (once the CI key is overwritten, the matching key file will be moved to this folder)
Plug USB stick to the TV
Go to “Factory menu - Other - Update CI+ Credential - Update From USB“ and then press RCU “OK/►” key
The “Valid” flag should now be enabled (turns to “Yes”), “Custom Code” should display “TCL” and “Serial Num.” field should update with Key number.
Remove USB stick
Note: If unfortunately the process failed, you may need to download new CI key and repeat operation again.

“How to upgrade Netflex ESN using USB”
Under USB root path, create a new folder named as “esn”, then copy corresponding ESN KEY bin files into this folder;
Under “esn” path, the key should be named as “nflxk_***”,like this ,
Plug USB stick to the TV;

Go to “Factory menu >  Clone & Update  > ESN Key Upgrade“ and then press RCU “OK” key
Remove USB stick

If unfortunately the process failed, you may need to download new ESN key and repeat operation again.

“How to upgrade HDCP key & HDCP2.0 key using USB”
Copy HDCP.bin, HDCP2.bin into USB stick (pen drive) root path, please pay attention to the spell.
Picture ->contrast -> “1950” -> Main Menu
Go to “Main Menu > Service Menu > USB UPDATE > HDCP Upgrade (HDCP2.0 Upgrade)

“How to upgrade MAC Address using USB”
Go to “Factory menu > Other > IPTV > Update MAC Address > Update From USB“,but there is no this function which is only displaying.
The “Written status” flag should now be enabled (turns to “Yes”) and “MAC address” should display corresponding address like onto below snapshot:

“Network Connection Setup”

Note: You can set up your TV so that it can access the Internet through your local area network (LAN) using a wired or wireless connection.
▪ Wired Network Connection
You can connect your TV to your LAN using cable in three ways:
1) Plug your TV to your LAN by connecting the LAN port on your TV to an external modem using a Cat5 cable.
2) Plug your TV to your LAN by connecting the LAN port on your TV to an IP Sharer which is connected to an external modem. Use Cat5 cable for the connection
3) Depending on how your network is configured, you may be able to plug your TV to your LAN by connecting the LAN port on your TV directly to a network wall outlet using a Cat5 cable (Note that the wall outlet is  attached to a modem or router elsewhere in your house)
Select “Option > Settings > Network - Internet connection (On) > Interface > Ethernet”, then select “IP settings” to connect to network.

Wireless Network Connection
To connect your TV to your wireless network, you need a wireless router or modem and a Wireless LAN Adapter.
Connect your “Wireless USB Adapter” (USB dongle) delivered with your TV to your TV’s USB .
Select “Option > Settings > Network > Internet connection(On) > Interface”, then select “Wireless” to connect to a wireless network
Select “Wireless settings” and press “OK/►” to enter.
You can setup the wireless network connection three ways:
1) “Scan” mode
Select “Wireless settings > Scan”, then press “OK/►”, the TV will scan all available access points and then display them.
Select an available access point, then press “OK/►” to connect the TV to it.
Note: If you select a protected access point, you will have to enter the corresponding password. Press “OK” on the remote control to display virtual keyboard to enable you to enter the password.
2) “Manual” mode
Select “Wireless settings > Manual”, then press “OK/►”, you will be prompted to enter the correct SSID of an available wireless router to setup the connection.
3) “Auto” mode
If your AP supports WPS (Wi-Fi Protected Setup), you can connect to the network via PIN (Personal Identification Number) or PBC (Push Button Configuration). WPS will automatically configure the SSID and WPA key in either mode.
Select “Wireless settings - Auto”, then press “OK/►” to enter.
Network Setup

Press “Option” on the remote control and select “Option - Settings - Network - Internet connection”. Then press “OK/►” key to select “On”. Wait until the connection is automatically established.
Select “Option - Settings - Network - Connection test”, then press “OK/►” to check the Internet connectivity. If failed, follow below steps to ensure connectivity
Select “Option - Settings - Network - IP settings”, then press “OK/►” to enter into “IP settings” submenu
Set “Address type” to “Auto” by pressing “OK/►” key, it will acquire and enter the new detected IP address automatically.  You can also follow below steps to enter your IP address manually.
Set “Address type” to “Manual” by pressing “OK/►” key, then press “▼” key to go to the first entry field.
Enter the “IP address”, “Subnet mask”, “Default gateway”, “Primary DNS” and “Secondary DNS” values. Use remote control digital keys to enter numbers and “◄/►” key to move from one to other field location
After setting all required inputs, select “Option-->Setting - Network - Connection test” to check the Internet connectivity again
Select “Option > Settings > Network > Information”, then press “OK/►” key to display current connection details, such as Interface, Address type, IP address, etc..

“How to upgrade Flash SW using Network”
Please follow Appendix (10), make sure your TV is connected on the internet.
Update through the menu
Select “Option > Settings > Support > Software update > By network”, then TV starts to search new software automatically .If new software is detected, the page will show the button and hint that can guide you.

Select “Download”, software will be downloaded automatically. The download progress will be shown in the lower right corner:

Please follow the instructions on TV if download or update failed. And you can check your network and try again.
Please wait for a moment, when the progress appears from 0% to 100%, TV will show a dialog to ask you if you want to update.

You can select “Later” if you don’t want to update now. While you select “Never”, the dialog will not be shown until new software is detected.
Select “Update”, TV will update automatically. First the following dialog will be shown. Then TV will restart automatically to finish updating:

Please do NOT power off TV until it restart successfully.
You can select “Option -  Settings - Support - Software update”, the “Current version” shows the new Software version.
Update through auto detection
When your TV has powered on and connected on the internet, a dialog will appear on TV if TV detects new.

You can select “Later” if you don’t want to download software and if you select the “Never”, the dialog will not be shown until another new software is detected.
Select “Download” and TV will download automatically;
All the following operation is same as “Update through the menu”.

DIGITAL STEP METER ELECTRIC CIRCUIT DIAGRAM

 This circuitry measures the distance walked during a walk. The hardware is located in a small box placed in your pants pocket and the display is conceived as follows: The leftmost display D2 (the most significant digit) shows 0 to 9 km. and its point is always further to separate km. from hm. The rightmost display D1 (least significant digit) shows hundreds of meters and its point lights up after every 50 meters walk. The beeper (excluded) signals every unit count, repeating every two steps.

A normal step has been calculated to cover about 78 centimeters, so the LED signaling 50 meters lights up after 64 steps (or 32 mercury switch operations), the display shows 100 meters after 128 steps and so on. When the battery is low, the display lights up only when requested by pressing P2. Accidental resetting of the counters is ruled out because both buttons must work together to reset the circuit. 

Obviously this is not a precision meter, but its degree of approximation has been found to be good for this type of device. In any case, the most important thing to do is to properly place the mercury switch inside the box and set its degree of tilt. IC1A and IC1B form a monostable multivibrator, providing some degree of freedom from excessive bounce of the mercury switch. Consequently, a pure square pulse is fed to IC2, which is divided by 64. Q2 controls the point segment of LED D1 every 32 pulses counted by IC2. Either IC3 and IC4 divide by 10 and control the displays.

 P1 resets the counters and P2 turns on the displays. IC1C generates a rectangular audio frequency, which is switched on for a short time with each monostable count. Q1 turns on the piezo sounder and SW2 allows you to mute the beeper.

 

List of Electronic Components:

R1, R3 - 22K 1 / 4W Resistor
R2 - 2M2 1/4W resistor
R4 - 1M 1/4W resistor
R5, R7, R8 - 4K7 1/4W resistor
R6 - 47R 1/4W resistor
R9 - 1K 1/4W resistor
C1 - 47nF 63V polyester capacitor
C2 - 100nF 63V polyester capacitor
C3 - 10 nF 63V polyester capacitor
C4 - 10 uF 25V electrolytic capacitor
D1 - 7-segment mini LED display with common cathode (hundreds of meters)
D2 - 7-segment LED mini-display with a common cathode (kilometers)
IC1 - 4093 Quad 2 input circuit Schmitt NAND Gate IC
IC2 - 4024 7-step ripple counter IC
IC3, IC4 - 4026 Decimal counter with decoded 7-segment display outputs IC
Q1, Q2 - BC327 45V 800mA PNP transistors
P1 - SPST Button (Reset)
P2 - SPST Button (display)
SW1 - SPST Mercury Switch, also called Tilt Switch
Slide Switch SW2 - SPST (Sound On/Off)
Slider switch SW3 - SPST (power on/off)
BZ - piezo sounder
Battery B1 - 3 V (2 AA cells 1.5 V in series)

HITACHI 26LD6600, 32LD6600, 37LD6600, 26LD6600A, 32LD6600A, 37LD6600A, 32LD6600B HOW TO ENTER THE SERVICE MODE / POWER SUPPLY (SMPS) CIRCUIT DIAGRAM

 

Main PWB: Vestel 17MB08, 17MB15

Service menu

To enter the service menu, first enter the MENU by pressing MENU button and then press the digit 4, 7, 2 and 5 respectively.

Picture adjust: source:  all possible sources given with the chassis as list.

Mode:  three items as a list; Natural, Dynamic, Cinema

Color temp:  three items as a list; Cool, Normal, Warm.

Contrast:  slider bar.  Changing value between 0 and 63.

Brightness: slider bar.  Changing value between 0 and 63.

Sharpness:  slider bar.  Changing value between 0 to 31.

Color: slider bar.  Changing the value between 0 to 99.

R:  slider bar. Changing the value between 0 to 31.

G:  slider bar.  Changing the value between 0 to 31.

B:  slider bar.  Changing the value between 0 to 31.

Backlight:  slider bar.  Changing the value between 0 to 255.

In this menu preset values for each mode (contrast, brightness, sharpness, color values for each mode NATURAL, DYNAMIC, CINEMA and for each color temp: R, G, B values for each color temp- COOL, NORMAL, WARM are determined for each source.

Block diagram

PCB layout

RESONANT MODE TFT POWER SUPPLY: 26, 32 and 37 inch Hitachi LCD TVs