Sony DAV DZ810 Home Theater System – HBD-DZ170 - Error codes – Protections – Cold reset – SMPS schematic

HBD-DZ170/DZ171/DZ175/DZ310/DZ510/DZ610/DZ810 is the amplifier, DVD/CD and tuner section in DAV-DZ170/DZ171/DZ175/DZ310/DZ510/DZ610/DZ810

Cold Reset
• The cold reset clears all data including preset data stored
in the RAM to initial conditions. Execute this mode when
returning the set to the customers.
Procedure
1. Press the Power button to turn the power on.
2. Press three buttons [Play], [FUNCTION] and [Power] simultaneously.
3. When this button is operated, display as “COLD RESET” for a while and all of the settings are reset.

Key Test Mode

Procedure

1. When the display test mode is activated, press the [?/1] button, to select the key test mode.

2. To enter the KEY test mode, the fluorescent indicator displays “K0 V0”. Each time an another button is pressed, “KEY” value increases. However, once a button is pressed, it is no longer taken into account. When all keys are pressed correctly, “K6 V0” is displayed.

3. When the [VOLUME] control is turned in the direction of (+), “V0” is changed to “V1”, then ... “V9”.

When the [VOLUME] control is turned in the direction of (–), “V0” is changed to “V9”, then ... “V1”.

4. To exit from this mode, while pressing the [Stop] and the [ Play] buttons simultaneously, turn the [VOLUME] control in the direction of (+).

Error codes

The meaning of error codes are:

01: Communication error (No reply from syscon)

02: Syscon hung up

03: Power OFF request when syscon hung up

19: Thermal shutdown

24: MoveSledHome error

25: Mechanical move error (5 Changer)

26: Mechanical move stack error

30: DC motor adjustment error

31: DPD offset adjustment error

32: TE balance adjustment error

33: TE sensor adjustment error

34: TE loop gain adjustment error

35: FE loop gain adjustment error

36: Bad jitter after adjustment

40: Focus NG

42: Focus layer jump NG

51: Spindle stop error

52: Open kick spindle error

Power Supply Regulator board [SMPS] Circuit Diagram and PWB [STR-Y6763 – STR-F6168-LF1352]

Disc Tray Lock

• The disc tray lock function for the anti-theft of an demonstration disc in the store is equipped.

Setting Procedure :

1. Press the [Power] button to turn the set on.

2. Press the [FUNCTION] button to set DVD function.

3. Insert a disc.

4. Press the [Stop] button and the [Eject] button simultaneously for five seconds.

5. The message “LOCKED” is displayed and the tray is locked.

Releasing Procedure :

1. Press the [Stop] button and the [Eject] button simultaneously for five seconds again.

2. The message “UNLOCKED” is displayed and the tray is unlocked.

Note: When “LOCKED” is displayed, the tray lock is not released by turning power on/off with the [Power] button.

Product Out

• This mode moves the optical pick-up to the position durable to vibration and clears all data including preset data stored in the STR RAM to initial conditions. Use this mode when returning the set to the customer after repair.

Procedure

1. Press the [Power] button to turn the power on.

2. Press the [FUNCTION] button to set the function “DVD/CD”.

3. Remove all discs, and then press three buttons [Stop], [Eject] and turn the [VOLUME] control in the direction of (+).

4. Displayed to message “SERVICE IN” on the fluorescent indicator tube when pressing in turn the [4] > [DVD MENU] >[CLEAR] buttons on the remote commander.

5. After the “STANDBY” blinking display finishes, the message “MECHA LOCK” < == >“UNPLUG” is displayed on the fluorescent indicator tube disconnect the AC power plug, then the product out mode is set.

The STR RAM initialization is executed upon a next power-on after the power is turned off.

PROTECTION FACTOR (SD DETECTION/ DC DETECTION) IDENTIFICATION TEST MODE

When an error is detected, the FL tube alternately displays

“PROTECTOR < == > PUSH POWER”.

Press the [Power] button.

* Buttons other than the [Power] button are invalid.

“STANDBY” blinks three times on the FL tube.

The protection release state (POWER OFF) is established.

(No FL tube display)

Press the [Power] button two times.

The power to the system turns on, and the normal operation is established. (Restore).

During the protection state:
1. If the AC plug is connected or disconnected during the protection state, the protection state is released, and the normal operation is established. (The protection state is not maintained.)
2. The protection factor is displayed by pressing the [RETURN]  [3]  [2]  [0]  [0]  [ANGLE] buttons of the remote commander.
(during the “PROTECTOR < == > PUSH POWER” display).
> When SD is detected: Repeats “SD DETECT < == >  PROTECTOR”.
>  When DC is detected: Repeats “DC DETECT < == > PROTECTOR”.
> When TSD is detected: Repeats “TEMP DETECT < == > PROTECTOR”.
PL: SD detection
When the “L” output from the SD (shutdown) port on the S-MASTER POWER Driver Shutdown and voltage descent (15V or less) of 30V power supply (PVDD) are detected.
DC detection
When the “L” output from the power/speaker error detection circuit (DC detection port) is detected for two seconds continually, the power system other than that of the FL tube is turned off, and the protection state is established.
TSD detection
When the “L” output from the thermal shutdown port on the motor driver is detected.

Pioneer DVR 520H-S DVR 65H-S DVD recorder – Service diagnosis – How to enter Service mode – adjustments - SMPS schematic

How to enter the service mode – ID number enter procedure – Model setting – Pioneer DVR520H – Pioneer DVR 65H DVD recorder - SMPS circuit diagram used ICs MR1521 (Switching regulator) – MD5001T (4v, 6V and 2V5 DC regulators) – MD1322N 

Service Diagnosis List
CPRM ID NUMBER AND DATA SETTING
The Setting is necessary
• " CPRM ERR" is displayed on the FL display immediately after the power is turned on or in Stop mode.
• When the MAIN ASSY , DRIVE ASSY or the FLASH ROM is exchanged.
MODEL SETTING
DOWNLOAD METHOD
The Setting is necessary
• When the MAIN ASSY is replaced.
• When the JCKB ASSY is replaced.
• When the MAIN ASSY and JCKB ASSY is replaced.

SERVICE MODE
[First Screen] (Version information, etc)
[Sub Screen 1] (Result of error-rate measurement : Video mode/VR mode)
[Sub Screen 2] (HDD information)
[Second Screen] (ATA/ATAPI debug screen)
[Sub Screen 3] (writer maintenance information of ATA/ATAPI DEBUG OSD)
[Sub Screen 4] (ATA/ATAPI DEBUG OSD_LD degradation judgement)
[Fourth Screen] (VR-recording error log)
[Sub Screen 4] (Error log for VR recording)
[Fifth Screen] (Error log for VR playback)
[Sub Screen 2] (Error log for VR playback)

DV DEBUG MODE
[Third Screen] (DV debug information)

ERROR RATE MEASUREMENT

Only Video mode measurement

VIDEO ADJUSTMENT FOR SPECIFIC AREA
Purposes
Depending on the area, jitter may appear in a picture received by the tuner, as conditions of signals received by the tuner are different from area to area. To correct this kind of problem, the function of the System Codec AVIO control section for adjusting signals received by the tuner can be used.

AGING MODE

CPRM ID NUMBER AND DATA SETTING

Entering the ID Number and ID Data for DVD Recorder

For the DVD recorder, it is necessary with the recoding/playback of DVD–RW disc to set an individual number (ID number) and ID data to each recorder. If the number and data are not set correctly with the following procedure, operations in the future may not be guaranteed.

You will find the ID number to be set on the ID label on the rear panel.

[If no ID label is found on the rear panel, write down the specified ID number by checking it according to "How to confirm the ID number"]

• " CPRM ERR" is displayed on the FL display immediately after the power is turned on or in Stop mode.

• When the MAIN ASSY , DRIVE ASSY or the HDD is exchanged.

Input Flow of the ID No. and ID data when exchanging HDD, MAIN Assy or Drive Assy

How to Input the ID Number and ID Data

Note:
Be sure to enter the ID number in Stop mode.
Use the service remote control (GGF1381) for operations. Only opening/closing of the tray are performed from the player.
The ID data disc is swept out automatically after the recorder has read the data from it.

To enter the input mode, press ESC + STEREO sequentially in a status with no ID number set, such as after FLASH-ROM downloading.

As number input is enabled when the unit enters the input mode, input the 9-digit ID number.  (The entered number is also displayed on the FL display.)

After inputting the number, press SEARCH to register the ID number.

When the ID number has been registered, the unit enters the ID data input mode. (The FL display indicates "INSERT ID.")
In this condition, place the ID data disc on the tray and close the tray using the CLOSE key  on the player.

While the data are being read, the message is displayed on the screen.  (The FL display indicates "LOAD ID.")

When the ID data have been read, the data are written to the FLASH-ROM.  (The FL display indicates "WRITE ID.")

When the ID data have been written to the FLASH-ROM, the message "Rom Write OK" is displayed on the screen.  (The FL display indicates "ID DATA OK.")

After confirming this message, press CLEAR to exit the input mode.

How to Confirm the ID Number

Press ESC + STEREO sequentially with an ID number already set, and the unit enters the ID number confirmation mode.

The set ID number is displayed on the screen (and on the FL display), permitting you to confirm it.

To exit this mode, press CLEAR.

How to Clear the ID Number

Press ESC + STEREO sequentially with an ID number already set, and the unit enters the ID number confirmation mode.

Input the same number as the ID number you have set.

After inputting the number, press STOP .
Only when the entered number matches the set ID number, the ID number is cleared and the unit exits this mode.
If the numbers do not match, you must return to step 2. ( STOP is not accepted until 9 digits are entered.)

MODEL SETTING

The Setup is Necessary When:
a) When the MAIN Assy is replaced
b) When the JCKB Assy is replaced
c) When the MAIN Assy and JCKB Assy are replaced Note : Make sure of setting the correct number.

How to Setup the Model
1) After power on, the following screen is displayed on TV monitor.  Press " 22 " by using the remote control unit for service(GGF1381).

2) The following screen is displayed on TV monitor.  Press " 011 " by using the remote control unit for service. The setting complete when OSD is disappeared.
3) Unplug the power cable.
4) Reset the recorder to all its factory settings.
1. Make sure that the recorder is on.
2. Press and hold [STOP] and press [STANDBY/ON] key on the front panel.  The recorder turns off with all settings reset.

5) Enter the Service Mode and then confirm the Model Name " DVR-520H/KU/CA ".
1. Make sure that the recorder is on.
2. Press [ESC] then [DISP] keys by using the remote control unit for Service.

Notes:
1) After the setting complete, you can NOT CLEAR the setting data.  Make sure the pressing number.
2) " NG " is appeared on TV when unsuitable number is pressed.  In such a case, please unplug the power cable and plug it again. Then restart the model setting.

SMPS circuit diagram

To see how to enter service mode and other details =>>>

Olevia LCD TV – How to update the firmware EDID Olevia 227, 232, 427, 432, 527 and 532

How to update the software, EDID write in, ADC correction and ADC parameter adjustments

Olevia Firmware Updating Instructions

This process installs a new version of the firmware and fixes the past bugs.

Model: Olevia 227, 232, 427, 432, 527 and 532

Before installing you need:

1. A compatible USB thumb drive
2. A Computer with Microsoft® Windows® 2000 or Microsoft® Windows® XP operating systems.

1.To make sure that no other files are in the thumb drive.
2. It is highly recommended to print the instructions as a reference before installing.

Loading Instructions:

1. Review the available downloads, the bugs fixed, and the new features added.
2. Follow the instructions on the firmware download section to successfully download and load firmware into the TV.
Note: USB thumb drive must be formatted in FAT32 for detection.

3. After you have located the firmware, download it to a thumb drive. There are five different files.
4. Turn TV off and insert the USB thumb drive into the TVs USB input.
5. Turn TV power on, OLEVIA screen will pop up and after a few seconds a blue bar and will appear on the lower part of the screen covering the whole image from left to right, then a red bar.
6. Once the firmware loading is complete the TV will turn on and initial Home/Showroom option screen will appear.
7. Check under OSD menu Firmware Version and make sure that it matches with that of thumb drive. (Menu => Setup => Firmware Version)
8. Take off the thumb drive.
9. For more help, please call our technical support at 1-866-9OLEVIA (965-3842)

EDID write in and ADC correction and Parameter Adjustment
1 EDID write in
1.1 EDID tools
1.2 EDID write in
1. PC（Notebook）
2. Software（EDID Write EEprom20060816.exe）and confirm Personal computer hard disk Have 2 files (1. C:\EDID Editor(including Hex files) 

2.C:\LCD TV\DATA(product and record had No.)

3. EDID PCBA tool, USB cable, RS232 mini din, Print cable, VGA cable

EDID write in

1. Open Labview EDID Writ Eeprom20060816 file, and confirm software Keep Running.（Refer Step 1）

2. Choice RS-232 (PC System)Port No.(Refer Step 2) choice burn in type (Refer Step 3)

3. Press Set Model button （Refer Step 4 , and key in 232-S12. and confirm Scalar solution（Refer Step 5）

4. Confirm EDID Jig PCBA (printer port and USB A-B Line connect to PC, HDMI line to TV first , MinDim RS-232 to TV)
5. and then press Button（Refer Step 6), then open a save file path in widow.

operate Barcode scanner scan S/N stick No.

6. First write HDMI EDID code , if finish OK you can find green light.（Refer Step 7）
7. And have a message that change EDID Jip PCBA VGA Cable to TV.(HDMI line must leave.

ADC correction and Parameter adjustment

ADC correction and Parameter adjustment tools：
1. PC（Notebook）
2. CHROMA 2325
3. MINOLTA CA-210
4. Software（Gamma Calculator6A_Jason.exe）

ADC correction
Photo 1
Photo 2
Photo 3
1. Click the icon on the desk "Gamma Calculator" (please see Photo 1), and then Photo 2 would show up.
2. Click the icon "Gamma Calculator" of Photo 2, and then Photo 3 would show up.
3. Connect "RS232" &"VGA" with TV.
4. click the "arrow mark" (which is circle by red) in Photo 3, and then click the icon "ADC" also in Photo 3 blue circle.
5. The window will show up with the instruction about component, and then connecting component instead of VGA port.
6. The ADC process is completed once the window with the message "OK" shows up.

Attention
1. Please make sure it's under "VGA Source" before processing ADC.
2. Please pay attention to different solution for ATI/MTK8202/PW106 as Photo 3 green circle.
3. Please make sure the set-up for RS232 is correct.

Parameter adjustment

1. Click the icon on the desk "Gamma Calculator" (please see Photo 1), and then Photo 2 would show up.

2. Click the icon "Gamma Calculator" of Photo 2, and then Photo 3 would show up.

3. Please follow (as Photo 4 blue circle) to choose the solution & panel mode.

4. Connect the" RS232, USB, VGA changeful wire, and audio wire" with TV. And then connect the other side of VGA changeful wire with the pattern generator, and set up the TV source under "VGA". And please locate

the "CA-210" on center of TV screen.

5. Click "BL" button, and the window with "Gamma adjustment" message would show up. Please click "OK" for next step. (as Photo 4 red circle)

6. Adjust the GAMMA (R;G;B) and then click the button "Enter" after GAMMA adjustment is completed.(Please follow Photo 5, 6)

7. Please check the result.

Attention

Check pattern points for adjustment (CHROMA PROGRAM：71 1360_FT_VGA )：
1. Check if the frame is damaged and if the size is smaller than normal, or if those points in the 5 squares correspond well. (Photo 7)
2. Each gray bar should be identified with only pure color.(Photo 8)
3. 256 Gray. => R => check if there is sync (influenced by high frequency). (Photo 9)

JVC TH M606 JVC TH M603 – Test mode – initialization – sub-woofer amplifier schematic – DVD digital Theater System

Test mode – initialization – SMPS and sub-woofer amplifier schematic JVC TH-M606 5.1CH 1000W Home Theater System: STR G6651(switching regulator) – PC123Y22FZ (opto-coupler) – STK413-400

Normal initialization method
initialize according to the following procedures in the following case:
> Just after you upgrade the firmware.
> After you confirm the symptoms that a customer points out. First Initialize, and then confirm whether the symptoms are improved or not.
> After servicing, before returning the main body to a customer. (Initialized main body should be returned to a customer.)
(1) Set the main body at test mode.
(2) Press "PAUSE" key of the main body.
(3) When initialization is completed, "00" and "RDS" is displayed in the FL display.
(4) After this, power switch to off and wait until "See You" to off.

ADJUSTMENT

Test mode setting method
(1) Unplug the power plug.
(2) Insert power plug into outlet while pressing both "PLAY" key and "STANDBY/ON" key of the main body.  "Area code" is indicated at the upper left of display.
(3) To release test mode, press "STANDBY/ON" key of the main body.

NOTE: Each pressing of "MENU" key of the remote controller in test mode changes the mode as follows

Method of displaying version of firmware 

(1) Set the main body at test mode.
(2) Press "MENU" key of the remote controller twice. Then, version number and alphabetical letter of the system controller and the back end are displayed in the FL display as follows.

Full-initialization method
Perform all-initialization according to the following procedures in the following case:
> Just after you exchange the pick-up.
> Just after you exchange the spindle motor.
> Just after you exchange the traverse mechanism base.
NOTE: Perform all-initialization when you exchange the parts above and also when you remove the parts above.
Just after the flap adjustment of the pick-up guide shaft.
(1) Set the main body at test mode.
(2) Press and hold "F.SKIP" key of the main body for more than 1.5 seconds.
(3) When all-initialization is completed, "33" and "RDS" is displayed in the FL display.
(4) After this, power switch to off and wait until "See You" to off.

NOTE: After all-initialization, be sure to perform Device Key Writing.

SMPS and Sub-woofer amplifier schematic: STR G6651(switching regulator) – PC123Y22FZ (opto-coupler) – STK413-400

Click on the schematics to zoom in

Power supply regulator -SMPS - Schematic - JVC AV-28T5BR/P

JVC 28 inch color TV SMPS circuit diagram and PWB - JVC AV-28T5BK/P, AV-28T5BR/P, AV-28T5SK/P, AV-28T5SR/P, AV-28T5SP/P

JVC AV-28T5BK - CTV How to enter service mode – Memory IC replacement – Initial data values in service mode

Adjustments after the replacement of memory IC, Service mode entry and data adjustment procedure, Initial data setting values in service mode, Service menu flow chart. JVC AV-28T5BK/P, AV-28T5BR/P, AV-28T5SK/P, AV-28T5SR/P, AV-28T5SP/P 

There are 2 ways of adjusting this TV: one is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components.  The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

MEMORY IC REPLACEMENT

• This model uses the memory IC.

• This memory IC stores data for proper operation of the video and drive circuits.

• When replacing, be sure to use an IC containing this (initial value) data.

MEMORY IC REPLACEMENT PROCEDURE

1. Power off

Switch off the power and disconnect the power plug from the AC outlet.

2. Replace the memory IC

Be sure to use the memory IC written with the initial setting values.

3. Power on

Connect the power plug to the AC outlet and switch on the power.

4. System constant check and setting

* It must not adjust without signal.

(1) Press the [INFORMATION] key and the [MUTING] key of the REMOTE CONTROL UNIT simultaneously.

(2) The SERVICE MODE screen will be displayed.

(3) While the SERVICE MODE is displayed, press the [INFORMATION] key and [MUTING] key simultaneously, and the SYSTEM CONSTANT SET screen 2 will be displayed.

(4) Refer to the "SYSTEM CONSTANT SETTING", and check the setting items. Where these differ, select the address with the [FUNCTION /] key and adjust it with

the [FUNCTION Up/Dn] keys. (The letter of the selected item is displayed in yellow.)

(5) Setup will become effective if the main power is shut off.

5. Receiving channel setting

Refer to the OPERATING INSTRUCTIONS and set the receive channels (Channels Preset) as described.

6. User settings

Check the user setting items according to the given in page later. Where these do not agree, refer to the OPERATING INSTRUCTIONS and set the items as described.

7. SERVICE MODE setting

Verify what to set in the SERVICE MODE, and set whatever is necessary.

MEMORIZE THE ADJUSTMENT DATA

When adjustment is completed, press the [MENU] key to memorize the adjustment value. If not to do it, adjustment data is not memorized to the memory IC. And if exit the adjustment mode before memorize the data, the adjustment value which you change is canceled.

RELEASE [Exit] OF SERVICE MODE

After completing the setting, return to the SERVICE MODE, then again press the [INFORMATION] key.

Service menu flow chart

INITIAL SETTING VALUE OF SERVICE MODE

(1) Adjustment of the SERVICE MODE is made on the basis of the initial setting values. However, the new setting values which displays on the screen in its optimum condition may differ from the initial setting value.

(2) Do not change the initial setting values of the items not listed in “ADJUSTMENT PROCEDURE”.

(3) “---” is impossible to adjust or not requirement to adjustment.

Click on the pictures to zoom in

Hisense 40LE45S 40LC45S LCD TV–How to enter service mode–Software update–Chassis MT5380

How to enter service mode - How to update the firmware - Hisense 40LE45S and Hisense 40LC45S LED LCD TV

There are two ways to enter the service mode [Factory mode].  With a factory remote control [Service remote control] and with the User's remote control

To enter the Factory OSD Menu

With factory RC (remote control)
1. Press the “M” button and enter factory mode.
2. Press the“Menu” button and enter factory OSD menu.
3. Press “CH+”/“CH-” button select the function menu, press “VOL+”/“VOL-” enter the selected
function menu. Press “VOL+”/“VOL-” button adjust values in the menu.

With user’s RC

1. Power TV On
2. Press the Menu button and call up User OSD Menu
3. Select Audio > Balance
4. Enter 0 > 5 > 3 > 2 in sequence.
Note: If necessary, re-enter the number keys.
5. Factory OSD appears.
6. Press Menu again to leave factory OSD. [Exit the factory mode]

Factory OSD Menu

White Balance

Note: Different source has different WB values. Before adjusting, please change to desired source.
1. Auto Color
For VGA and Component Video sources, WB values must be adjusted. Before adjusting, prepare the signal instruments such as DVD or K-8256 first, and find the video picture with gray and color bars. Then change to desired source.

a.Press “M” button and enter factory mode.b.Press “Menu” button and enter factory OSD menu.c.Select the item “Auto Color”.d.Press VOL+ button to auto color.e.Close the OSD menu after 5 seconds.

To clear the EEPROM

Note: The factory menu date varies according to different sources. In case changing the factory data by error, you can choose to “Clean Protected”, by which you can resume the
a Select the item “Clean All”.
b Press VOL+ button to clear the EEPROM data.
c Close the OSD menu after 5 seconds.
d Restart the TV.

To Exit the Aging Mode
If There is a red “M” moving on the screen, it means the TV is in Aging mode. To exit the Aging mode, use your user RC, and enter 8 > 0 > 8 > 7 in sequence.

Software Upgrading

The software is upgraded by a burning toll-MtkTool, which can burn the program file *.bin to the main board of the unit.

Install the driver

Select the default value, the driver will be installed step by step.

Hardware connecting
Connect the unit to your PC with a USB-to-serial port cable. USB port connects to your PC, and serial port to the TV’s RS232 port.

For the first connecting, the PC will recognize and automatically install the USB device. The process is just like the installation of a mini disk, see the following picture.

Upgrading with the MtkTool

MTKtool is a green program needing no installation. It is saved in the folder.

The MtkTool using log is restored in the MtkLog folder. It records the running time and date whenever the tool is used. The log will be a txt file named by the date and time.

After connecting the TV with your PC, double click icon, open the MtkTool

Flash chip model

Refer to follow steps to update the software:

1 Select mode of Flash chip to MT538X as the below picture.

2 Refer to the next page instruction to select the communicate port.

3 Press the icon beside the baud rate and make sure it is green as the below picture.

4 Set the flash baud rate to 115200 as the below picture.

5 Click the browse button to select the *.bin file that will be updated.

6 Click the “start” button to update software.

Open “Device Manager” and find which port is connected with the TV. In above picture, COM4 is connected to the TV; so, select “COM4” in the MtkTool main interface. Select the right baud rate according to chip model. For this unit( chip model is MT538X), select 115200

Note: Where or not click the “Auto Set Flash Baud Rate” in the “window” menu depends on the chip type. If the flash chip does not support high speed transport, do not select this option; otherwise, reserve the selected mode.

Click “Browse” button, find the upgrading program file, and select it. Press “Upgrade” button and start upgrading.
The above shown interface appears on the screen, indicating upgrading successfully.

Toshiba RDXV60KB HDD & DVD/Video and Toshiba SD23VE DVD VIDEO – SMPS schematic

Power supply regulator board circuit diagram – Toshiba  Toshiba  RDXV60KB Cassette Recorder and Toshiba SD23VE DVD VIDEO PLAYER and VIDEO CASSETTE RECORDER

Toshiba  RDXV60KB   Cassette Recorder SMPS schematic and PWB

Fixed voltage (Auto voltage select) type power supply circuit is used with this unit.  If Main Fuse (F1001) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.  Otherwise it may cause some components in the power supply circuit to fail.

Toshiba SD23VE DVD VIDEO PLAYER & VIDEO CASSETTE RECORDER PWB and SMPS schematic

Click on the pictures to magnify

LG 29FX4BL BLE BKQ BKQ-TG CRT TV with PIP - Schematic diagram – STR-X6556 - SMPS Circuit diagram

LG 29FX4BL/BLE/BKQ - LG29FX4BL/BLE/BKQ-TG - 29 inch CRT TV circuit diagram Used ICs: 24C168-1PG – TDA6111Q – TDA7297 – TDA12XXXH – KTA4558 – STR-X6556 - TAFD-Z241P (TUNER) – BSC28-N2334-115V-FBT – EER4942 300UH-SMPS Transformer.

How to inspect condition of a transmission and reception in FM TRANSMISSION MODEL
- FM TRANSMITTER’s efficiency inspections is executed to a finished in a final inspection phase.
- FM TRANSMITTER is a function which receives voicesignal by an exclusive remote control and Earphone, transmits a FM through transmitter of inner part in MICOM BOARD to TV sound (MONITOR OUTPUT)
1) Execute in channel generating voice-signal
2) Select a transmitted frequency in MENU OSD.
MENU => SOUND => TRANSMITTER => frequency selection (87.7MHz)
3) A received frequency in an exclusive remote control or received FM Radio is tuned by 87.7MHz(107.7MHz) which is same as frequency in OSD.
4) Check out whether a signal generating to MAIN SPEAKER generates in earphone or receiver or not.
5) There is no alternation and setting of adjusted DATA in the process of inspecting FM TX.

Circuit diagram - [Schematic] full

SMPS [Split] - STR-X6556

Click on the schematics to zoom in

LG CF20 LG CF21 Service mode – option adjustment – circuit diagram – Troubleshooting table - Hotel Mode - CRT TV

Used ICs and FBT: TDA2006 – LA4282 – TDA8842 or TDA8841 – TDA8351 – STR-F6654 – TDA6107Q – TDA7429S – SAA5281 – MSP3410D – [FBT Part number 6174Z-8005E – FBT-FTSPN13-T8005E] - LG CF-20/21S42EH  LG CF-20/21S12EH

RF AGC (Automatic Gain Control) Adjustment

Test Point : AGC TP (J29)
Adjust : Remote Control

The RF AGC was aligned at the time of manufacture for optimum performance over a wide range conditions.  Readjustment of RF AGC should not be necessary unless unusual local conditions exist, such as:

1) Channel interference in a CATV system.

2) Picture bending and/or color beats, which are unusually due to excessive RF signal input when the receiver is too close to a transmitting tower or when the receiver is connected to an antenna distribution system where the RF signal has been amplified. In this case, the input signal should be attenuated (with pad or filter) to a satisfactory level.

3) Picture noise caused by "broadcast noise" or weak signal.  If the broadcast is "clean" and the RF signal is at least 1mV (60dBu), the picture will be noise free in any area.

Adjusting RF AGC to one end of rotation will usually cause a relatively poor signal to noise ratio;

Adjusting to the other end of rotation will usually cause a degradation of over load capabilities resulting in color beats or adjacent channel interference.

Adjustment
1. Connect RF signal (65dB!1dB) and turn on the TV.
2. Press OK buttons on TV set and Remote Controller at the same time to get into SVC (Service) mode.
3. Press Channel UP/DOWN button on the Remote Controller several times to find AGC.
4. Press Volume UP/DOWN button until the AGC Voltage is the same as the Table below.
5. Press OK button to memorize the data.

HOTEL TV Mode
NOTE: This mode is useful for HOTEL TV MODEL. Dealer or HOTEL manager can use this option.

AFTER SELECTING HOTEL MODE, CAN NOT CHANGE INITIAL SET UP CONDITION.
- CHANNEL PROGRAM(AUTO PROGRAM, MANUAL PROGRAM, EDIT FUNCTION) and OSD LANGUAGE set up condition is fixed so the HOTEL lodger cannot change and remove initial set up data condition at his pleasure.
This function prevents HOTEL lodger from needless changing channel memory data and OSD language condition.
It will be helpful for maintaining the best suitable condition of TV SET.

Limit MAX. VOLUME LEVEL.
- The HOTEL lodger can only use limited range of volume level because loud TV sound can disturb other lodger's private business.
The HOTEL manager select maximum volume level proper for HOTEL.

Only Audio without Video source available through A/V input
- When the Audio signal is fed to A/V input jack, the Audio is available without Video.
In the previously existing Model, sound is muted if there is no Video signal.

HOTEL mode operating guide
1) SET UP(CH.SEARCH AND EDIT) the Channel Program
2) SET UP Proper max volume level in SVC Mode.
3) SET UP HOTEL option in SVC Mode (OPTION-2)

OPTION Adjustment (SVC MODE:OPTION-1, OPTION-2)

NOTE: When the EEPROM has been replaced, the Option data should be restored as the function of individual system and specification.

1) Press OK buttons on both TV set and Remote Controller at the same time to get into SVC mode.

2) Press the Yellow button several times to find OPTION-1 or OPTION-2.

3) Input the correspond OPTION data referring to Table below with the numeric buttons 0~9

Option table

Circuit diagram (Schematic)

SMPS - split

Troubleshooting

White Balance Adjustment.(LINE SVC-0) and initial data W/B

NOTE : This adjustment should be performed after screen voltage adjustment.
1) Tune the TV set to receive 100% white pattern.
2) Press OK buttons on TV set and remote controller at the same time to get into SVC mode.
3) Press Channel UP/DOWN button for function adjustment.
4) Adjust VOL+ or VOL- button for GG031.
5) Adjust VOL+ or VOL-button in each status of "Rg--"/"Bg--" for X=281!8, Y=288!8 with color analyzer.
6) Press OK button to memorize the adjustment data.

Click on the pictures to magnify