AOC A240 WD - LCD MONITOR - SMPS and BACK-LIGHT INVERTER - SCHEMATIC

Power Supply_Sub-Power Supply & back-light Inverter Circuit Diagram_AOC Monitor A240WD

SMPS [power Supply Schematic] _ Click on the schematics to Magnify

Sub Power & Back light Inverter

PHILCO [PHILIPS] - PH14B CTV _CIRCUIT DIAGRAM

PHILCO [PHILIPS] - PH14B CTV - SCHEMATIC

Used  Semi conductors - FSCQ0765RT(STR at Power Control)_24C08(Memory IC)_OM8370(Main ststem chroma jungle)_AN17821(Audio Output IC)_TC4053(Input Selector IC)

SCHEMATIC [FULL] _ Click on the pictures to magnify

SMPS [split]

MARANTZ PM6010-OSE - SCHEMATIC [Circuit Diagram] _ Integrated Amplifier

Integrated Amplifier_Used semiconductors _ 2SC5198_2SA1941_AN7062P_NJM2068_TMP47C200BN

IDLING CURRENT ADJUSTMENT

  Before switching the power ON, set the master volume control to the minimum position and the balance volume to the center positions. Also set semi-fixed resistors R755(Lch) and R756(Rch) on PCB P701 to the center positions.

  Each of the cement resistors R767(Lch) and R768(Rch) on the PCB P701 is provided with three test points.  Connect a digital voltmeter, set for the DC voltage input, to the test points at the two extremities of the three test points of R767 or R768.

  After the setup above, switch the power ON, and adjust semi-fixed resistors R755(Lch) and R756(Rch) on PCB P701 according to the digital voltmeter reading. The target setting value is 10 mV(50 mA) for both the Lch and Rch.

SCHEMATICS [CLICK ON THE PICTURES TO ZOOM IN]

SYSTEM CONTROL

SHARP -32LE240M - LC-32LE340M - SERVICE MODE - FACTORY SETTING - HOTEL MODE

LC32LE240M - LC 32LE340M

Factory setting

AC power is plug off after shipment setting is done.

CAUTION: Do not plug on again after shipment setting is done. If do, please re-do the shipment setting. Do not off with remote control.

[Do inspection for LC-32LE240M/340M (for Philippines) using NTSC signal.]

PUBLIC MODE SETTING PROCEDURE

There are the following two ways to get the public mode setup screen displayed.

1) Press the “INPUT” and “VOL (+)” keys on the set at once and turn on the power.

2) Get the password input screen displayed.

Procedure

*   The input starts with the leftmost digit.

*   Use the numeric keys [1] thru [9] and [10/0] keys on the remote controller.

The other keys are not acceptable.

With a numeric-key input, “–” will change to “*”. The input position will move one digit to the right.

With all the 3 digits entered, the password will be verified.

3) The 3-digit password is now verified.

The password [0] [2] [7] provides for the public mode screen. (This screen comes on with whatever adjustment process settings.)  With any other passwords, the screen changes to the normal mode.

Second Method

In the adjustment process mode, turn on “PUBLIC MODE”. Also press the “CH (^)” and “VOL (+)” keys on the set at once and turn on the power.

How to Exit Public Mode

There are the following ways to quit the public mode setup screen.

Public Mode Menu

The guidance is not displayed onscreen.

Setup procedure

* To move the cursor up and down, use the “cursor UP/DOWN” key (remote controller) and “CH ▲/▼  key (remote controller and set).

* To change the settings, use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).

* To save new settings, keep the cursor at “Execute” and use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).

To get the setting items details; go to >>

SANYO PLASMA DISPLAY - PDP-42WV1AS - SERVICE MODE - BATTERY REPLACEMENT

How to Enter and Exit the Service Mode _ Sanyo Plasma Display _ PLASMA MONITOR PDP-42WV1_PDP-42WV1S (EUROPE, ASIA)

PDP42WV1A_ PDP-42WV1AS (U.S.A.)

SERVICE MODE

CAUTION

  The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the following adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance and product safety.

Before Adjustment

This adjustment is done to enter Service Mode by Remote Control Unit.

Quick operation is needed to enter Service Mode.

(1) Turn the monitor on.

(2) Press and hold the MENU button on the monitor.

(3) Keep item (2) and press the STATUS button and release the both buttons.

(4) Within 2 seconds after item (3), press the MUTE button to appear the Service Mode Display.

To return to the Normal Mode [Exit service mode]

  Once turn the Monitor off by pressing “POWER” button on the monitor or remote control unit and turn it on again.

SERVICE MODE DISPLAY

To adjust

* To select adjustment item, press ▲/▼ button on the remote control unit.

* To adjust data, press ◄/► button on the remote control unit.

* Select adjustment item by ▲ button.

* Adjustment item is displayed in order. To reverse adjustment item, press ▼ button.

* Adjust the data by ◄/►button.

To exit the Service Mode.

To exit the service mode, press POWER ONOFF button on the monitor or remote control unit.

[The all data adjusted in service mode memorizes into non-volatile memory IC.]

BATTERY REPLACEMENT

Plasma Monitor is used a battery for Clock Function. {Danger of explosion if battery is incorrectly replaced.  Replace only with the same or equivalent type.}

The battery is fixed to Main Board with Battery Holder.

* Remove the battery from battery holder to bent hooks slightly.

* Mount a new battery by correct polarity and bent hooks back.

Parts No.: 645 059 8302

Chassis No. PDP-42WV1-00 (PDP-42WV1)

Chassis No. PDP-42WV1S-00 (PDP-42WV1S)

Chassis No. J3T-42WV1A00 (PDP-42WV1A)

Chassis No. J3T-42WV1AS00 (PDP-42WV1AS

PHILCO (PHILIPS) - PH32S86DG – LED LCD TV - POWER SUPPLY REGULATOR and AUDIO OUTPUT - SCHEMATIC

Power Supply Regulator Circuit & Audio Output circuit_ PHILCO [PHILIPS] PH32S86DG – LED LCD TV 

ICs used [TPA3020 (Audio Output) – D7537R (Power Control)

SMPS SCHEMATIC

AUDIO OUTPUT SCHEMATIC

CLICK ON THE SCHEMATICS TO MAGNIFY

ERROR CODES - PIONEER DDJ-ERGO-V _ DJ Controller

Error Codes Display & Jog Dial Rotation Load Adjustments _ Pioneer DDJ-ERGO-V DJ Controller

ERROR CODES DISPLAY

  When abnormalities are detected during the time of carrying out power supply ON, or operation, it displays by LED.

How to Enter JOG Load Measurement Mode

* To enter this mode, while holding the F2 and F3 buttons on the Deck A/C side pressed, set the Power switch to ON.

* During this mode, the KEYLOCK LEDs on both sides are lit.  (Hold the two buttons pressed until the opening display terminates.)

* The load (light or heavy) on the JOG dial when it is turned can be objectively judged in this mode.

How to Measure

# When the JOG dial is rotated swiftly in this mode, the maximum speed and time required for slowdown, as defined below, are measured. When the maximum speed reaches 7 times normal speed or higher, time required for slowdown is calculated then evaluated as to whether or not it is within the specified range, then the result will be indicated by the LEDs.

# Either rotation direction, clockwise or counterclockwise, is okay.

Maximum speed: 

Maximum speed with normal speed defined as when one rotation takes 1.8sec

Time required for slowdown: Time required for the rotation speed to slow down from 3 times to 1.5 times normal speed.

To measure the time required for slowdown, the maximum speed must be 7 times normal speed or higher.

If the maximum speed does not reach 7.0 times normal speed, the JOG LEDs flash three times as a warning.

The number of measurements up to the fourth time is indicated by the LEDs.

First measurement finished: HOT CUE 1 lit

Second measurement finished: HOT CUE 2 lit

Third measurement finished: HOT CUE 3 lit

Fourth measurement finished: HOT CUE 4 lit

Judgment

After four measurements of time required for slowdown are finished, the mean value of the four measurement results is calculated and judged as to whether or not it is within the specified range. The result will be indicated with the LEDs.

The specified range is 100 ± 40 msec.

OK: VINYL lit

NG (lighter): LOOP OUT lit

NG (heavier): LOOP IN lit

The 5th time or subsequent measurement can be performed, but the number of times of measurement is not indicated with the LEDs. The mean value of the results of all the measurements is calculated, and its result will be indicated with the LEDs.

POWER-SAVING MODE

If a drop in voltage for VBUS power is detected, a power-saving mode will be automatically established, limiting the headphones maximum output level.

Two types of power-saving mode are provided, as shown below.

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HOW TO UPDATE FIRMWARE - PIONEER DDJ-ERGO-V _ DJ Controller

Firmware Upgrade Procedure _ Pioneer DDJ-ERGO-V _ DJ Controller

FIRMWARE UPGRADE

The device which updates a firmware is MAINUCOM.

USB connection of the controller is made at PC/MAC, and it updates by performing the update program of exclusive use.

Download the zipped updater file for the latest firmware from Niis then execute the unzipped file on the PC.

The file-names for the updater are shown below.

Fielname

Windows: DDJ-ERGOvXXX.zip

Mac: DDJ-ERGOvXXX.dmg

Filename after the thawing

Windows: DDJ-ERGOUpdater_verXXX.exe

Mac: DDJ-ERGOUpdater_verXXX.app

Note: xxx is version number. If it is Ver1.00, it is DDJERGOv_100.zip/DDJERGOv_100.dmg

CAUTION: When you update, please terminate all DJ applications, such as VIRTUAL DJ

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* Starting/Selection of a language (English is chosen.)

* Check of a version (Click START)

* End.  (Click OK).  Controller is re-started automatically.

Confirming the Firmware Version (MAIN_UCOM) and confirming the Mode setting (VINYL mode and jog dials' illumination mode)

* To enter this mode, while simultaneously holding the DECK A and KEYLOCK buttons on the Deck A/C side pressed, set the Power switch of the unit to ON. (Hold the two buttons pressed until the opening display terminates.)

* The version number of the firmware (MAIN_UCOM) will be indicated with LED-lighting patterns that are switched every 3 seconds in integral part and decimal fraction part.

* In the blocks that are indicated with the red frames in the figures, the number of lit LEDs indicates the corresponding number.

1 Integral part of the version number (LEDs on DECK A lit)

[x. xx]

2 Decimal fraction part of the version number (LEDs on DECKs A and B lit)

[x . xx]

Numeric expressed with the number of lit LEDs

  In addition to the above-mentioned firmware-version indication, the setting statuses of VINYL mode and Illumination mode for the Jog dial are indicated with other LEDs.

For details, see the Factory Reset Mode; described by previous post here.

PIONEER DDJ-ERGO-V_HOW TO ENTER SERVICE MODE - HOW TO DO A FACTORY RESET

Service Mode Entry & Factory Reset procedure_Pioneer DDJ ERGO V _ DJ Controller

SERVICE MODE

(1) How to Program for USB Controller copy mode

* While simultaneously holding the LOOP OUT and VINYL buttons on the Deck A/C side pressed, set the Power switch of the unit to ON.

* Data for the TUSB firmware in the MAIN_UCOM will be copied to the EEPROM.

* During copying, the FUNCTION LED is lit.

(2) Firmware Update

* Set the Power switch to ON without pressing any other buttons.

* Data for all areas in the ROM, excluding those for the boot area, will be rewritten. 

(3) Version of the Firmware Confirmation [with hardware alone]

* While simultaneously holding the DECK A and KEYLOCK buttons on the Deck A/C side pressed, set the Power switch of the unit to ON.

* The version number will be indicated with the LEDs on the controller, with no need for starting up any application.

(4) Service Mode

* While simultaneously holding the LOOP IN and F2 buttons on the Deck A/C side pressed, set the Power switch of the unit to ON.

* In this mode, you can check if each element on the controller can operate and each LED can light properly, with no need for starting up any application.

(5) JOG Load measurement modes.

* While simultaneously holding the F2 and F3 buttons on the Deck A/C side pressed, set the Power switch of the unit to ON.

* This mode is for judging if the load value for the JOG dial while it is being turned is OK.

(6) Point of sale demonstration modes.

Demonstrations with lighting of the LEDs (illumination) are automatically performed at shops even if no PC application is started.

This mode will be established if no reception via MIDI is performed for 1 minute after the controller is turned ON.

(7) Factory Reset (To return the settings to the factory default values)

* While simultaneously holding the DECK C and FX 1 buttons on the Deck A/C side pressed, set the  Power switch of the unit to ON.  The VINYL mode ON/OFF and Normal/Active mode are reset to the initial settings.

FACTORY RESET MODE [Details]

* To enter this mode, while simultaneously holding the DECK C and FX 1 buttons on the Deck A/C side pressed, set the Power switch of the unit to ON.  (Hold the two buttons pressed until the opening display terminates.)

* During Factory Reset mode, the VINYL LEDs on both sides are lit. 

* When you exit this mode, the LEDs go dark.

To check whether the initial settings are restored.

Checking VINYL ON/OFF

* After the unit is turned on and the opening illumination is finished, if the VINYL LED is lit, it is set to ON (OK).

Checking of Normal/Active Mode

Check the following, after starting the application on the connected PC.

* Load a piece of music onto any of the decks (Deck A, B, C, or D).

* Check that blue LEDs on the JOG dial are lit (Active mode)

Checking Method with the Controller Alone.

* Establish Version Confirmation mode, by turning the unit ON while simultaneously holding the DECK A and KEY-LOCK buttons on the A/C deck side pressed.

Checking VINYL ON/OFF

Check the same as described.

Checking of Normal/Active Mode

Check that blue LEDs on the JOG dial are lit (Active mode).  (LED indication is the same as described)

JBL MS-A5001 - SCHEMATIC - POWER AMPLIFIER and SMPS (Power Supply)

JBL Digital Signal Processing Amplifier - MS-A5001 - SMPS & Power Amplifier _ Schematic.

IRS20957STRPbF – IRF6645TRBPF – TL4941 – IRF3205

POWER AMP: SCHEMATIC

SMPS SCHEMATIC

CLICK ON THE SCHEMATICS TO ZOOM IN

TERUMO TE331 - TE332 -Terufusion Syringe Pump - E2PROM INITIALIZE and AGING

TERUMO TE-331 – TE332 Terufusion Syringe Pump. How to initialize E2PROM.

Medical (Electronic) Equipment.

E2PROM INITIALIZING

RAM data is erased and E2PROM is refreshed by ROM data [default data at factory].  This operation resets all the settings to the default.  Readjust required.

1. Set the internal DIP switches 1 and 2 to ON and OFF respectively.
2. While holding down the [STOP] switch, press the On/Off switch.  The display first shows “888.8”, then “FACt”, and a short beep follows.  Release the switches and check the display has changed to “”dIAg”; which stands for Diagnosis.  Note:  If you press the On/Off switch without pressing the Stop switch “Er91” appears on the 7 segment display.  Turn off the pump, and repeat the procedure above.  If you do not release the switches at the beep, the display changes to ‘Er 8”.  Once ‘Er 8’ appears, you have to turn off the pump, and repeat the procedure above.
3. When “dIAg” is displayed, press the Display Select switch  3 times.  Check the display shows “CLEA” which stands for clear.
4. Press ‘Stop ‘switch, and the display shows “E or J”.  E is for Europe, and J is for Japan.
5. Press and hold 'PURGE’ switch about 1.5 seconds to choose ‘E for Europe’.
6. Initialization of E2PROM starts.  The display changes to ‘Eur’.  As the initialization proceeds, first “0       “, then “00     “,and “000 “, lastly “0000” appears on the display.the switch for Japan is the Start.  If the Start switch is pressed, “JP” appears on the display.
7. When successfully completed, can hear a short beep and see the display of “good”.
8. In case of failure, “bAd” is displayed.  Then the display returns to “CLEA”.
9. Press On/Off switch to Exit the initializing E2PROM mode.

Aging.

1. Set the DIP switches 1 and 2 to On and Off, respectively.
2. While holding the Stop switch, press On/Off switch.  The display first shows “888.8”, then “FACt” and a short beep follows.  Release the switches and check the display has changed to “dLAg” which stands for Diagnosis.  Note: If you press the On/Off switch without pressing the ‘Stop’ switch “Er91” appears on the 7 segment display.  Turn off the pump, and repeat the procedure above.  If you do not release the switches at the beep, the display changes to “Er 8”.  Once “Er 8” appears, you have to turn Off the pump and repeat the procedure above.
3. When “dIAG” is displayed, press the Display Select switch 4 times.  Check the display shows “Aging”, which stands for Aging.
4. Press Start switch, and Aging starts.
5. When completed, press the On/Off switch to Exit the Aging Mode.

The following actions should be recognized while aging is performed.

* Motor rotates [slider moves approximately 9mm/h].

* All LED elements connected flash at 1 Hz / 50% duty.

* While the motor is rotating the minimum purge sound comes out.

Attention:  You can stop aging at any time by pressing the ‘Stop’ switch, and start again by pressing the Start switch.

* The motor stops if occlusion is detected with the load on the slider at approx. 4606N=4.7kgf.

VIEWSONIC G90FB-4 Monitor - SMPS - SYSCON and H-OUT - SCHEMATIC (Circuit Diagram)

ViewSonic G90FB-4 - Model No. VS10794 - 19” Digital Controlled Color Monitor - Schematic Diagrams _ Power, Horizontal Out & System control 

Click on the schematics to Zoom In

SMPS

Before check SW.REG

Variable output: 60V 

Constant output: 6.3V, 12V, 83V，180.V, －12V

Adjustment conditions and precautions

Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory.

  The B+ control block of the SAA4849 has the same behavior as the TDA4856 with adapted threshold voltages. The circuit allows the user to choose the trigger edge of the HDRV signal and the polarity of the output stage via I2C-Bus. The B+ control function block of the SAA4849 consists of an Operational Trans conductance Amplifier (OTA), a voltage comparator, a flip-flop and a discharge circuit. This configuration allows easy application for different B+ control concepts.

Main adjustments:

Power supply Troubleshoot

  The horizontal part contains a PLL, which works over the full frequency range from 25 kHz to 140 kHz. This range can be reduced by a over and an upper frequency limit (Write Once Registers HPMAX and HPMIN).Via I2C bus the number of 48MHz clock cycles is sent through the register. The slewing speed during mode change is also programmable in a write once register (HSLEW) After the clocks for the HPLL are switched on, the HPLL starts with a fixed free running frequency of 60 kHz. The H-drive pulses are not active and the start up procedure is inhibited. The default setting of register bit HCONTROL [0] will cause the HPLL to slew, not switch. To the free running frequency defined in the I2C register HPFREE (the default value is also 60 kHz).Independent on H-syncs which are possibly present. The HPLL will slew to that free running frequency. To achieve an always defined starting point for the startup procedure, this procedure cannot be interrupted.

Horizontal scan & output schematic

Micro-controller Section

  The micro controller (IC101) core is a 80C51 type. The micro clock frequency of 12 MHz is derived from the Xtal oscillator, which is running at 48MHz. The DDC interface is suitable to handle DDC2 by a modified hardware I2C-bus interface .Standard high current ports,3 ADC pouts with voltage inputs and 4 static standard8 bit DAC outputs (low interference) and one PWM output for digital control application are implemented. The central processing unit (CPU) manipulates operands in two memory spaces. These are the 1024byte internal data memory (consisting of 256 bytes standard RAM and 768 bytes AUX-RAM) and 48K-byte internal program memory. The program memory of the SAA4849 consists of 48K bytes ROM. The SAA4849P provides sync. Processing with full auto sync. Capability, a flexible SMPS block and an extensive set of geometry control facilities. Further the IC generates the drive waveforms for DC coupled vertical boosters to the TDA8172.

BIOS SOFTWARE UPGRADE - VIEWSONIC - VX910 19” Color TFT LCD Display.

UPGRADE THE BIOS SOFTWARE - ViewSonic VX910 19” Color TFT LCD Display.

Model No.VS10162

UPGRADE PROCEDURE

After installation, shortcuts may be found in the settings path or the program menu (default setting). [See the previous post here, for more details]

* The security file is a key to use ISP functions; press the "OK" button.

* The warning shown is used to remind the user that a CPU rate that differs from IIC protocol may cause the ISP functions to fail; press the "OK" button.

* As shown in Fig, press the "Create Security File" button to key in a security code, and use the slider bar to adjust the speed of the IIC bus.

* Fig below shows the settings for the ISP software's security code. It requires two command numbers, and the commands must be keyed in sequentially: 7C, 4C, 77. The command numbers and commands must be set by the user while coding. For more details, please refer to section 6 boot code of ISP.

Using ISP to program MCU

* As shown in Fig, select the MTV type first, load the binary or intel hex file to be programmed into the MCU, click "OK," then press the "RUN" button.

* If the user changes the MTV type, the file must be loaded again, as the previously loaded file will be cleared.

* CRC (cyclic redundancy check): the host can check the result in the CRC register instead of reading every byte in flash.

* The Check MCU CRC OK message indicates that the host has verified the program's CRC; see Fig.