Samsung LS19HAA LCD Monitor –SyncMaster – Power and Back-light inverter schematic

SMPS and Back-Light inverter circuit diagram – Samsung SyncMaster LS19HAA – 19 inch LCD monitor.

When the AD board is in DPMS state:
The IP has been designed so that it operates with a power consumption of less than 0.6W 
The Scaler consumes power up to 27mA
The power to the panel is switched off
The MCU consumes power up to 23mA.
=> The total current consumption to the DPMS is less then 60mA; and the total power consumption is 0.6W + 5V*60mA = 0.9W so that the total power consumption is less than 1W.
When the AD board is operating normally:
The maximum power consumption of the panel lamps is described below (It may vary depending on the panel manufacturer)
17" : 4*(7.5mA*650mVrms)=4*4.9=19.6W
19: : 4*(7.5mA*720mVrms)=4*5.4=21.6W
The power consumption of the Panel Control board is as follows: 5V*720mA=3.6W
The power consumption of the Scaler is as follows: 3.3V*245mA + 1.8V*300mA = 1.35W
The power consumption of the MCU is as follows: 5V*44mA =0.22W.

Inverter 
1. A conversion device that converts DC rated voltage/current to high ones necessary for the panel lamp.
2. DC/DC(Regulator): General term for DC to DC converting devices.  The IP board receives 5V and outputs 1.8 or 3.3V that is supplied to the scaler (SE56AWL).
3. Power MosFET: The IP board receives 5V and outputs a lower voltage in DPMS mode and supplies the whole 5V for the panel operating board in normal conditions. In that case, the switching of Power MosFET is controlled by Micom.
4. Scaler: Receives the digital TMDS and analog R,G,B signals and convert them to proper resolutions using up- or down- scaling that are transferred to the panel in the LDVS formats.
5. Crystal(Oscillator): Use one 24MHz oscillator externally to supply power to both MCU and Scaler at the same time.
6. MCU & EEPROM: I2C is a two-way serial bus of two lines that supports communications across the integrated circuits as well as between MCU, Scaler and EEPROM.  In particular, MCU and Scaler (SE56AWL) use the DDR direct bus for mutual communications, which is an effective, speedy system because it allows 4 additional address/data lines compared to the old serial systems.
7. Function Key: A certain keystroke generates a certain electrical potential, which is transferred into ADC input port of the MCU and then converted to a digital value by the A/D converter of the chip. The digital value (data) is a clue to
which key is entered. In practical, the voltage levels are set.

IP BOARD ( inverter ) PROTECTION Parts
BIZET INVERTER CONTROLER FAN7310 have 2-way of the PROTECTION MODE.
1. OVP[Over Voltage Protection] : If the Voltage of the series capacitors C10 & C15 is over the 2.0V, the Inverter latched-off.[See the Picture1]
2. OLP[Over Load Protection] : If the inverter output harness is opened(No-output current), the base of the Q1 turns on and change the C9 over 2V and then, the Inverter latched off.

IP BOARD(Inverter) Schematic

IP BOARD(Power) Schematic

Click on the schematics to magnify

YST- MS50 - Yamaha - Schematic – How to Disassemble POWERED MULTIMEDIA SPEAKERS (STK 408-040E)

Circuit Diagram – Disassembly – Yamaha YST MS50 - POWERED MULTIMEDIA SPEAKERS

DISASSEMBLE PROCEDURES
(Remove parts in the order as numbered.)
Subwoofer
1. Removal of the Rear Panel Ass’y.
a. Remove 8 screws (1) in Fig, and remove the rear panel ass’y.
* Arrow marks (<= ) are printed to identify the screws to be removed.
b. Disconnect one connector in Fig.
c. Disconnect the Speaker cord in Fig.
* When assembling the Rear Panel Ass'y, check to ensure that the packing is not damaged so as to prevent air leakage from occurring.

2. Removal of the Front Panel Ass’y

The front panel assy is fixed to the cabinet with dowels at 6 locations.
* As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the Cabinet.
a. Using the screwdriver insert in the gaps between the front panel ass’y and cabinet (bottom side first), push up the front panel ass’y.
b. Remove the front panel ass’y while taking it out. (Front panel ass’y can not to remove completely.)

3. Removal of the Speaker
a. Set up the front panel ass’y in the direction of the arrow.
b. Remove 4 screws (2), and remove the speaker.

Circuit Diagram (Schematic Diagram)

Output Power
Satellite .....20W+20W (1kHz, 4 ohms at T.H.D.=10%)
Subwoofer .40W (100Hz, 5 ohms at T.H.D.=10%)

Satellite
Tweeter ................................... 19mm (3/4") balanced dome Magnetic shielding type
Midrange ........................................................ 8cm (3") cone Magnetic shielding type
Subwoofer ................................................. 16cm (6-1/2") cone Magnetic shielding type
Power Consumption ........................................................ 65 W
Power Supply
U, C models .................................................... AC120V, 60 Hz
A model ........................................................... AC240V, 50 Hz
B, G models .................................................... AC230V, 50 Hz

AOC WA17W – Service Mode – Adjustments – Schematic - 17″LCD Color Monitor

How to enter service mode - AOC WA17W - 17 inch LCD monitor - Power and Backlight inverter circuit diagram - adjustments

Panel Specification
HannStar Display model HSD170MGW1-B00 is a color active matrix thin film transistor (TFT) liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, a driving circuit and a back light system. This TFT LCD has a 17.0 inch diagonally measured active display area with XGA resolution (900 vertical by 1440 horizontal pixel array) and can display up to 16.2M (6-bit+FRC) colors.
17.0 WXGA+ for Monitor application
High Resolution: 1440*900
2-ch LVDS interface system
LCD Timing Controller
Wide Viewing Angle
RoHS compliance.

Factory mode (Service Mode) of WA17W

Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.

Turn the Power-button off to quit from factory mode.

White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
1. Before started adjust white balance , please set the Chroma-7120 MEM Channel 3 to Warm (6500K) color, MEM Channel 4 to Normal (7300K) color, MEM Channel 9 to Cool (9300K) color , and MEM Channel 10 to sRGB color
( our Warm color parameter is x = 313 ±25, y = 329 ±25, Y=180cd/m2; Normal color parameter is x = 301 ±25, y = 317 ±25, Y=180cd/m2; Cool color parameter is x = 283 ±25, y = 297 ±25, Y=180cd/m2; sRGB color parameter is x
= 313 ±25, y = 329 ±25, Y= 180cd/m2)
How to setting MEM channel you can reference to chroma 7120 user guide or simple use “ SC” key and “ NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust .
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (Warm color):
Warm color temp. Parameter is x = 313 ±25, y = 329 ±25, Y=180cd/ m2
B. MEM.CHANNEL 4 (Normal color):
Normal color temp. Parameter is x = 301 ±25, y = 317 ±25, Y=180cd/ m2
C. MEM.CHANNEL 9 (Cool color):
Cool color temp. parameter is x = 283 ±25, y = 297 ±25, Y=180cd/m2
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±25, y = 329 ±25, Y= 180cd/m2

3. Into Factory mode of WA17W:

Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.

SMPS and Back-light Inverter circuit diagram (Schematic)

Audio output schematic

Click on the schematics to magnify

4. Bias adjustment:
Set the Contrast to 50; Adjust the Brightness to 80.

5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust Warm (6500K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 313 ±25, y = 329 ±25, Y=180cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2

B. Adjust Normal (7300K) color-temperature

1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)

2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)

3. The LCD-indicator on chroma 7120 will show x = 301 ±25, y = 317 ±25, Y=180cd/m2

4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100

5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100

6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100

7. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2.

C. Adjust Cool (9300K) color-temperature

1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button)

2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120)

3. The LCD-indicator on chroma 7120 will show x = 283 ±25, y = 297 ±25, Y=180cd/m2

4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100

5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100

6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100

7. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2

D. Adjust sRGB color-temperature

1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)

2. Switch the MEM.channel to Channel 10 (with up or down arrow on chroma 7120)

3. The LCD-indicator on chroma 7120 will show x = 313 ±25, y = 329 ±25, Y= 180cd/m2

4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100

5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100

6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100

7. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2.

E. Turn the Power-button off to quit from factory mode.

Sharp HT-SB200 - SOUND BAR SYSTEM – Error codes – circuit diagram – exploded view

When you fail to perform operations properly, the following messages are displayed on the speaker.
E1 – E2  or  E3.
Means: Malfunction of the surround circuit. Place the speaker away from noise source and plug the AC power lead into another wall socket. (*)
[(*): Should the same message appear even if the speaker is unplugged and plugged in or is set to the stand-by mode and on again, contact your local dealer where you purchased the speaker.]
Power indicator (blinks red)
When the protection circuit of the amplifier is activated.
SYMPTOM: Audio Mutes at random for less than a second.
CAUSE: Timing errors in error monitoring of DSP IC.
ACTION: Check operating Software version following the steps below. If displayed version indicates that the version is less than- b2-> 0u-> 0 then replace the Main CPU IC604.
IC 604 => Main CPU =>  RH-iXA266AW00
1. Turn ON the mains supply to the unit.
2. Press and Hold the SURROUND button and the ON/STAND-BY button.
3. Display displays “CL”
4. Keep holding down the ON/STAND-BY button and now press the VOL+ button.
5. The display should now in sequence the current version.

AC/DC adapter part number change.
If you need to replace the mains adapter please order the later part number given below.
AC/DC Adaptor Ass’y => RADPAA071AW01

Test Mode
1. Enter the Test Mode version display
While pressing down ON/STANDBY and VOL UP button, Switch ON AC supply.
Version will be display on 7 segment as below:-
b2 --> ** --> O

b2 = Model name, ( SB200 )
** = Software version no.
O = Destination code ( Others )

Enter the Test Mode version display
After enter Test Mode version display, Press VOL UP button.
1. All SOUND MODE LED will light ON

Exit the Test Mode
While in Test Mode function, Press ON/STANDBY button to exit.

Exploded:

Schematic: Main board

Schematic: Power amplifier

Click on the pictures to zoom in

Error Code Description.

E1 => Communication error between Micom and WM877 => Unplug AC cord and turn power ON again.

E2 => Communication error between Micom and NJU-26040  => Check line connected between Micom and corresponding IC.

E3 => Communication error between Micom and STA333.

System Protection indicator
In case abnormal power detection has occurred, the unit will automatically enter to stand-by mode ON/STANDBY LED will be flashing.

Unit enter Protect mode when irregular process occur on power supply line.

RC6256 - Panasonic clock radio - Schematic - how to disassemble

Disassemble procedure

Circuit Diagram

Hitachi HTS - HTD-K180UK - HTD-K180E – Schematic

Hitachi Home Theater System – Circuit Diagram and Software Update

UNIVERSAL SERVICE PASSWORD: Universal Password for Parental level is 1369
VERSION PAGE (Hidden Menu)
To see Version Page
> Press DISPLAY button from remote for Setup Menu
> Press “1”-“3” -“5”-“7” at Setup Menu
> Setup Menu screen refresh and “Version” selection can be seen under “Preferences Setup”
> Select “Version” for version page
> BUILD NO contains version and Hardware option other information for development only.
> Press “DISPLAY” button on remote control to exit menu.

VFD FULL SEGMENT TEST MODE
During Pressing “STOP” button on Front Pannel if you press Standby button all segments of VFD are highlighted.

REGION MANAGEMENT
At Version page by using arrow keys Region can be changed. 

UPDATE FILE NAME
Proper Update file name can be learned from Version Page as follows
First Characters of DAC, LOADER, TUNER and LANGUAGE group gives proper update file name.
Example: CFK.bin

Circuit Diagram

SMPS

Audio Processor

Audio Output

Control Panel

Click on the schematics to zoom in

CD UPDATE PROCEDURE
1) Player can be updated automatically with Update CD which contains proper file.  Check hidden menu for update file name.
2) Burn CD* within proper update file
3) There should be no Volume Name for CD.
Open Tray and place update CD
4) You can see
5) Press Play button to start upgrade
6) You can see “File copying” OSD message for a few second
7) Tray is open automatically
8) No need for CD in tray; Take it from away
9) During upgrade procedure “CD upgrade start, Please wait..” indicator at OSD, and “UPG” indicator at VFD
10) Upgrade procedure takes about a few minutes, please wait if tray is open
11) When CD update is finished tray is closed, screen is refreshed, update is finished

NOTE: * For “NERO Burning Rom” program
Ideal configuration:
Multisession selection should be “No Multisession”
File format should be “ ISO9660”. Do not use “Joliet”
It is better to erase with “Quick Erase” if you use CD-RW before burning
There should be no Volume label
It may be better to put some dummy files sn CD update file.

Pay attention the left side. Select CD and CD_ROM (ISO) on the upper left side of screen.

Select No Multisession

Format is Mode 1

Leave the dates as it is

Click the “New” on the upper right corner of the screen.

Select your file from file browser then you will see your file in the “Name” section on the right side and then copy the files to under “Name” section on the left side.(this is just an example you will see your file name when you are doing this process)

Click the “Burns the current compilation”

Then you will see this screen and click the “Burn” on the right upper side of screen.

You will see this screen and tray will open itself on computer ,then place the CD in CD-ROM And it will start writing. At the end you will see “burn completed”

Sharp HT-SL50 SOUND BAR HOME THEATER SYSTEM – Disassembly – Circuit Diagram

Sharp HT-SL50 Sound Bar Sub woofer - HTS – HT SL50 – How to disassemble – sub-woofer exploded view – schematic.

Output power RMS: Total 100 watts
Front Left/Right
RMS: 50W (25W + 25W) (10% T.H.D.)
RMS: 48W (24W + 24W) (1% T.H.D.)
Subwoofer:
RMS: 50W (10% T.H.D.)
RMS: 50W (1% T.H.D.)

Subwoofer

Type Subwoofer system

16 cm (6 - 5/16") woofer
Maximum input power 100 W
Rated input power 50 W
Impedance 8 ohms
Dimensions Width: 115 mm (4 - 1/2")
Height: 422 mm (16 - 5/8")
Depth: 307 mm (12 - 1/16")
Weight 4.50 kg (9.92 lbs)

Sub-woofer - Exploded view

Soundbar speaker

Type Full Range speaker system: 2.2 x 11.5 cm (7/8" x 4-1/2")

Full Range.  Maximum input power: 50 W/CH

Rated input power: 25 W/CH

Impedance 4 ohms/CH (3 pieces parallel)

Dimensions Width: 801 mm (31-1/2")

Height: 26 mm (1-1/16")

Depth: 50 mm (2")

Weight 0.66 kg (1.46 lbs.)

Exploded view

Disassembly

1. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

2. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling.

Circuit diagram: Main and System Control

Click on the pictures to magnify

Sony HCD GRX8 – Aging Mode – Power Amplifier Circuit diagram - COMPACT DISC DECK RECEIVER - STK4231 – STK4221

Sony HCD-GRX8 - Sony HCDR800 - Sony HCDRX88 - Sony HCDRX99 is the tuner, deck, CD and amplifier section in MHC-GRX8-R800-RX88-RX99.

Aging Mode

This mode can be used for checking the operations of the CD player and tape deck.
 When problems occur;
Aging stops, and the stopped state is displayed on the fluorescent display tube.
 When no problems;
Aging continues.

Preparations

 Set the CD on the DISC1 tray.

 Insert a commercially available tape for recording (tapes which contents can be erased, etc.) in decks A and B.

Setting the aging mode
Press the Stop button, ENTER/NEXT button, and DISC SKIP/EX-CHANGE button together.
When the aging mode is set, the CD roulette mark blinks. To exit the mode, press the Power button and turn OFF the power.

Sequence
The aging mode is executed in the following sequence.
If the function is set to “CD” when the aging mode is set, aging is performed starting from the CD player. When set to “TAPE A” or “TAPE B”, aging is started from deck A.
If the function is set to others, aging will not be started until the function is switched to CD or TAPE.

Aging of CD player (12 minutes)
Aging of deck A and Aging of deck B together =>Maximum about 12 minutes.

Display of status
 The aging status is displayed on the fluorescent display tube.
 Normally, the CD player displays the remaining aging time. But if operations ended abnormally, it displays the cause.
 During the aging of the tape deck, the operations performed will be displayed. If operations ended abnormally, this will be displayed at the fluorescent display tube.

CD Player

 During normal operations:

Display of fluorescent display tube [**1-@@]

**: Displays “CD” and the remaining aging time (minutes) alternately. The remaining aging time is counted down from 12.

@@: Track number being accessed.

NO DISC ERR => DISC 1 is NO DISC from the beginning
FOCUS1 ERR => Focus is not imposed properly
FOCUS2 ERR => The focus deviated several times after the disc rotated normally
GFS ERR => GFS ERROR
FBIAS ERR => Error during focus bias adjustment
SENSOR ERR => DISC 1 was found to be NO DISC by the disc sensor
TABLE ERR => The table did not rotate normally
TRAY ERR => The tray containing the BD did not operate normally

Operations during aging
Operations are performed in the following sequence during aging.

CD player

1. The CD tray rotates and disc 1 is selected.
2. Chucking is performed.
3. TOC is read.
4. Track 1 played back for 2 seconds.
5. The last track is played back for 2 seconds.
6. 1 to 5 is repeated.
7. After 12 minutes of aging, aging is switched to the tape deck.

Tape Deck

1. The tape in deck A is rewound to the head.
2. The FWD side is played back for 2 minutes.
3. The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed when the tape end is reached before the 20 seconds.
4. The REV side is played back for 2 minutes.
5. The tape is rewound to the head (REW).
6. The tape in deck B is rewound to the head.
7. The FWD side is played back for 2 minutes.
8. The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed when the tape end is reached before the 20 seconds.
9. The REV side is played back for 2 minutes.
10. The tape is rewound to the head (REW).
11. Aging is switched to the CD player.

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF

Remove the Case.

Turn the cam to the direction of arrow.

Pull-out the disc tray.

Note for Installation (ROTARY ENCODER)

Power Amplifier - Schematic

Click on the pictures to zoom in

Harman Kardon Sub-TS1 – Amplifier Sub-woofer – Schematic – Exploded view - HKTS1 System

The SUB-TS1 is part of the HKTS1 system.

SUB-TS1
Amplifier . . 75 watts RMS
Bass . . . . . 8" woofer, bass-reflex enclosure
Dimensions (H x W x D): 10 x 18 x 10 inches [267 x 470 x 267mm]
Weight . . . 29.9 lbs/13.6 kg.

Exploded View

Connection diagram

Schematic - Pre-amp

Schematic - Power amp

Troubleshoot

If there is no sound from any of the speakers, check the following
> Receiver/amplifier is on and a source is playing.
> Powered subwoofer is plugged in and is either in the “On” or “Auto” position.
> Check all wires and connections between receiver/amplifier and speakers. Make sure all wires are connected.  Make sure none of the speaker wires are frayed, cut or punctured.
> Review proper operation of your receiver/amplifier.

If there is no sound coming from one speaker, check the following
> Check the “Balance” control on your receiver/amplifier. 

If the system plays at low volumes but shuts off as volume is increased, check the following
> Check all wires and con-nections between receiver/amplifier and speakers. Make sure all wires are connected.  Make sure none of the speaker wires are frayed, cut or punctured.
> If more than one pair of main speakers is being used, check the minimum impedance requirements of your receiver/amplifier.

If there is low bass output, check the following
> Make sure the connections to the left and right “Speaker Inputs” have the correct polarity (+ and –).
> Powered subwoofer is plugged in and is either in the “On” or “Auto” position.
If there is no sound from the surround speakers, check the following
> Check all wires and connections between receiver/amplifier and speakers. Make sure all wires are connected.  Make sure none of the speaker wires are frayed, cut or punctured.
> Review proper operation of your receiver/amplifier and its surround sound features.
> Receiver mode must be in Dolby Pro logic, Dolby Digital, or any other mode that creates a surround-sound effect.  Even under normal operation, when viewing movies and television, surround sound is not present at all times at a high volume - only when the program has chosen to send information there.

Harman Kardon Sound Bar - SB 15 - SB230 – Schematic – How to program it with TV remote control

Harman Kardon SB 15/ SB 230 Soundbar with wireless subwoofer - Circuit Diagram – how to program the sound-bar to respond to TV Remote control.

How to Program the Soundbar to Respond to TV Remote

Can program the soundbar so it will respond to your TV remote’s Power, Mute, Volume Up, Volume Down and Source commands This lets you control your whole home theater system with a single remote Before beginning to program the soundbar, have your TV remote handy We recommend sitting down in front of the soundbar The steps will time-out, so read through the entire procedure before you begin.

To program the power command
* With the soundbar turned on, hold down the soundbar’s Power and Source Selector (SRC) buttons together until all the soundbar button indicators flash This enters the learning mode.

* Momentarily press the soundbar’s Power button It will turn amber.

* Aim the TV remote at the front of the soundbar from about 300mm-900mm (about 12-36 inches) away.

* Hold down the TV remote's Power button for one second, then release it Do this a total of four (4) times When the soundbar has learned the power command, its Power Indicator will turn blue, and the Surround Mode and Source Selector Indicators will flash blue.

[If the Power Indicator flashes amber, the procedure failed Repeat Steps 1 – 4]

SB15 CNTR Soundbar                           SB15 Subwoofer

Input Rating  DC 24V, 2 5–2 7A     Input rating: AC 230V, 50Hz, 100W
Amplifier Power 25 watts x 2         Amplifier Power 100 watts RMS  

To program the source, volume + and volume – commands

Follow Steps 1–4 as above, but in Steps 2 and 4, substitute the soundbar and TV remote’s Source Selector and Volume Up/Down buttons for the Power buttons.

To program the mute command

Follow Steps 1-4 as above, but in Step 2, hold down the soundbar's Power button for 2-3 seconds In step 4, substitute the TV remote's Mute button for its Power button.

To erase all remote programming
Hold down the soundbar's Surround Mode and Volume Up buttons at the same time for 2-3 seconds.

Circuit Diagram (Schematic)

If the SB 15/230 is manually put into Standby on the ON/OFF Button on the SB 15 unit itself, it can only be switched back ON by manually pressing the ON/OFF button again.

Auto Turn on

The SB 15/230 automatically enters Standby‐mode after approx. 15 minutes if no audio signal is detected.  This can also be forced by learning (for example) the TV set’s remote control “Off” code into the SB 15/230.

Due to Power saving regulations, the SB 15 does not “listen” to the Audio Inputs, unless it senses a remote signal first, which can be any kind of remote signal (it does not have to be a learned remote code ‐ turning ON the TV or sending any other infrared remote code will be enough). The remote signal will tell the SB 15/230 to start up automatically as soon as audio is detected on (first) the Digital or (second) the Analog audio Input. If no signal is detected by the Inputs, the SB 15 will go back into total Standby again after approx 15 minutes.
Problems

There is no sound coming from both the soundbar and the subwoofer

> Check that the soundbar is on (the Power Indicator is illuminated blue)
> Check that the cable connecting the TV or other source component to the soundbar is properly connected at both ends
> Check that the soundbar’s Source Selector is set to the correct source (the Source Indicator illuminates white for Source 1 – analog, and illuminates blue for Source 2 – digital), and that the source is playing an audio signal > Check that the system is not muted (when the system is muted, the soundbar’s.  Power Indicator flashes blue) Momentarily press the Power button to un-mute the system.
> Check that the soundbar’s volume is not turned all the way down (the lowest setting of the Volume Down button will mute the system).

There is no sound coming from just the subwoofer
> Check that the Subwoofer Volume Control is not turned all the way down (fully counterclockwise)
> Check that the Wireless Code switches on the subwoofer and soundbar are both set to the same setting number • Move the subwoofer closer to the soundbar (The maximum wireless operation distance is 50 feet (15 3m).

Soundbar’s sound is distorted
• Set the soundbar’s Trim switch to a lower setting
• Check the source component to see if the distortion is coming from it, and not the soundbar.

The system’s sound is too quiet, even when the soundbar’s volume is turned all the way up
> Set the soundbar’s Trim switch to a higher setting
> If the TV or source component is connected via a variable output, check its instructions to be sure that the output is not turned down too low.

The bass output is not loud enough
> Turn up the subwoofer’s Volume knob
> Move the subwoofer into a corner of the room
> Move the subwoofer closer to the seating location.

If you press your TV remote’s Power button and the soundbar turns off when the TV turns on (or vice versa)
> Press the Power button on either the soundbar or the TV (but not both) one time This will put them back in sync so they will turn on and off together when you press the TV remote’s Power button.
The subwoofer does not turn on

> Check that the subwoofer’s power cord is plugged into a working AC outlet
> Check that the subwoofer’s Power switch is in the On position
> Check if the subwoofer’s AC fuse has blown.