Philips AZ380, AZ380S CD Soundmachine Schematic, Exploded view, wiring diagram

Used ICs - D8227[Power Amplifier], S14831[AM/FM], D117[3v3 regulator], M5673[RF AMP/SERVO], SCA4270[Motor Driver]

Exploded view

Layout

Schematic

Wiring diagram

Apple AirPort Extreme – Disassembling procedure – How to replace the backup Battery

Disassembling procedure - Outer Case

First start by peeling off the outer rubbery covering on the bottom of the device.
CAUTION: This part is very fragile, so it is recommended that a blow dryer is used on the covering to heat it up. Simply blow dry the covering while slowly peeling it away, and the covering will not tear.

After removing the rubber covering, unscrew the five 4.9mm Phillips screws in the holes of the plastic casing.

After unscrewing all five screws, remove the plastic casing. The back should now look like the picture shown.

The inner metal casing is latched inside the outer white plastic shell, so insert a pry tool underneath the metal casing and pry it apart from the shell. It should make a click when it comes apart.

Remove the outer casing. The exposed logic board should look like this.

Remove the metal casing by gently prying the logic board away with you hands.

This should be pretty easy; you already removed the screws holding these pieces together.

Remove the battery by gently "shoving" it out with the plastic tool.

Hitachi LS42S504 LCD TV – How to enter the service mode, software update, 715G3196 1B poawer board[SMPS] schematic.

This specification applies to the 42.0 inch Color TFT-LCD Module T420HW06 V5. This LCD module has a TFT active matrix type liquid crystal panel 1,920x1,080 pixels, and diagonal size of 42.0 inch. This module supports 1,920x1,080 mode. Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal and Frame Rate Control (FRC) for each dot.
The T420HW06 V5 has been designed to apply the 10-bit 2 channel LVDS interface method. It is intended to support displays where high brightness, wide viewing angle, high color saturation, and high color depth are very important.

Firmware Upgrade

Use PC to write software to a flash storage, press “on” button to start the TV. (Take L46S603 for example)
1. Insert the flash storage into the USB port, and you will see a picture in which you can choose “YES” or “NO” (Picture1), you choose “YES”, and then the software will update automatically.
2. After software update is finished, you put out the flash storage and restart the TV.
3. Press “menu+1999+select”, check whether software version is ok.

ADC Adjustment
Ⅰ . In the TV mode adjust volume to zero, press menu key and then press number key 1  9  9 9. [Service mode]. It will achieve the factory mode. Select the item of White Balance and press right key to enter it.

Change TV, press the item “Current Source” to Component mode and change signal to 1080i mode, press the item “Auto Color”; Change TV, press the item “Current Source” to PC mode and change signal to PC TIMING 137(1024X768) Pattern 147 (16 Grays), press the item “Auto Color”

White Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance, please set the Ca210 Channel to 05 Channel and set it’s mode to xyLv mode.

The tolerance of the Cold color coordinates should be less than ± 10; The tolerance of the Normal color coordinates should be less than ± 20; The tolerance of the Warm color coordinates should be less than ± 20;

How to setting the Ca210 channel.

you can reference to Ca210 user guide or simple use the “Memory CH” up or down to set the channel to 05 channel, and use the “Mode” key to set the mode to xyLv.
Following is the procedure to do white-balance adjust

[can use the HDMI white balance adjustment to cover the white balance of all source modes, this method is meeting to the Zoran 785 software.]

HDMI Mode:
Ⅰ . In the TV mode adjust volume to zero, press menu key and then press number key 1 9  9 9. It will achieve the factory mode. Select the item of White Balance and press right key to enter it.

715G3196 SMPS board schematic

Before to adjust the white balance, please press the factory mode OSD of “Reset” to reset all white balance factory setting.

In the White Balance you can adjust 8 items.
1 > R Offset, G Offset, B Offset Æ R, G, B Offset adjust.
2 > R Gain, G Gain, B Gain Æ R, G, B Gain adjust.
3 > ZR-Bright adjust;
4 >ZR-Contrast adjust;
5 >ZR-T ÆColor Temp adjust;

Gain adjustment:

Adjust Cool color-temperature:
1. Set the pattern generator to pattern 104 or 0 IRE pattern. And adjust the Item “ZR-Bright” to min luminance.

2. Switch the Ca210 to xyLv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show x =272, y =278, Lv can adjust to max luminance.
5. Use the item R Offset and B Offset adjust to Adjust black balance: use 20 IRE(Pattern 190) signal, and adjust the black balance, until the Ca210 show x =272, y =278.
6. Use the item R Gain and B Gain to adjust white balance: use 100 IRE (Pattern 105) signal, and adjust the white balance, until the Ca210 show x =272, y =278.
7. Adjust item “ZR-Contrast” to check color temperature is saturation or not: Add by 7 steps and then to adjust the item R Gain and item B Gain to check the color temperature is saturation or not, until is saturation.
8. Enter the item “Color Temp” to select another color temperature to adjust.

Adjust Normal temperature:
1. Set the pattern generator to pattern 104 or 0 IRE pattern. Adjust the Item “ZR-Bright” value and can adjust to min luminance
2. Switch the Ca210 to T△uvLv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show T=9300K.
5. Adjust the Color Temp item: Normal, until Ca210 indicator reached the value T=9300k.

Adjust Warm color-temperature:
1. Set the pattern generator to pattern 104 or 0 IRE pattern. Adjust the Item “ZR-Bright” value and can adjust to min luminance
2. Switch the Ca210 to TuvLv-mode (with press “MODE” button)
3. Switch the Ca210 channel to Channel 05 (with up or down “MEMORY CH” button)
4. The LCD-indicator on Ca210 will show T=6500K.
5. Adjust the Color Temp item: Warm, until Ca210 indicator reached the value T=6500k.
Press “Exit” button on remote control to quit from factory mode.

NOTE 1
If you choose to do EEPROM Initialization (EEPROM Init), you MUST write down all White Balance values before doing so. These values will be reset to a default value.
All white balance factory adjustments will be LOST. It can be done as a NOTE anywhere in same page, please.
NOTE 2
Activating Reset to Default Settings (Reset to Def) will zero BOTH hour counters, the one for back light time and the one for Total time.

How to enter the service mode – Panasonic TX23LX50M, Schematic diagram

Panasonic TX23LX50M, Panasonic TX23LX50A, Panasonic TX23LX50X – service mode, schematic diagram

Service Mode Function
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be
adjusted by remote control in Service Mode.

How to enter SERVICE 1
1. In sound menu, set BASS to MAXIMUM, and set TREBLE to MINIMUM.
2. Simultaneously press INDEX button on remote control and DOWN button [ ] on the TV set.

How to enter SERVICE 2
1. Set the channel to CH99.
2. Select the “Sub-Brightness” under Service 1.
3. Press HOLD button on remote control.
Note:
To exit to Service mode, press N button on remote control.

Option Code Setting
If the memory IC (IC1103) or A Board is replaced, option code should be re-memorized.
Spare part of IC1103 is already memorized all Data for TX-23LX50M.
If you use for other model, you should re-memorized the different option code in SERVICE 2.

 Schematic Diagram

Bose Lifestyle 135 Bass Module Disassembly Procedures

Bose Lifestyle 135: disassembling procedure  

1. Rear Cover Removal
1.1 Remove the four screws securing the rear cover.
Note: When replacing the rear cover, tighten the screws to ensure the cover aligns properly.
1.2 Lay the bass module on its’ right side. Rotate the rear cover to gain access to the AC wire harness. Disconnect the AC wire harness from the power supply PCB.

2. I/O PCB Removal

2.1 Perform procedure 1 first
2.2 Slightly rotate the cover to gain access to the AC wire harness. Disconnect the AC wire harness.
2.3 Use a U.FL extraction tool, such as Hirose part number U.FL-LP-N-2(01), to disconnect the antenna’s U.FL connector.– Antenna Cable .Use care when removing antenna’s U.FL connector to avoid damaging the connector.
Note: When replacing the I/O PCB, use care not to damage the antenna’s U.FL connector when reconnecting. Press gently straight down to insert the U.FL connector. Excessive or angled pressure will damage the connector. When properly installed, the antenna cable will rotate freely about the connector. Do not rotate more than 1/8th of a turn to avoid damaging the connector.

2.4 With the cover laying flat on the bench, remove the two screws securing the connector cover. Lift off the connector cover.
Important Note: To reduce stress on the U.FL connector, the connector cover should be in place before connecting the antenna cable’s U.FL connector. Be sure to leave enough cable length so the cable can be easily attached to the U.FL connector without stressing the connector.
Note: When replacing the connector cover, ensure the antenna cable is properly dressed under the groove in the connector cover.

2.5 Remove the ribbon cable.

2.6 Remove the screw securing the I/O PCB. Lift out the I/O PCB.
3. Power Supply PCB Removal
3.1 Perform Procedure 1, 2.3, and 2.4 first
3.2 Remove the two screws securing the heat sink. Lift out the heat sink.
Note: When replacing the heat sink, ensure the ribbon cable is routed under the heat sink.

3.3 Remove the six screws securing the power supply shield and PCB. Lift off the power supply shield and PCB.
Note: 1. When installing the power supply PCB, ensure the thermal pad is located over U1001 and L1001. If the thermal pad is moved, it should be replaced because the compressed areas on the thermal pad will no longer align with the heat sink. It is important that there is good thermal contact between the thermal pad and heat sink.
2. When replacing the shield, ensure the conductive pad.
3. When replacing the shield, first secure the two screws and ensure proper alignment of the shield.

How to disassemble and re-assemble JBL Charge-3 blu-tooth receiver

Portable Wireless Stereo Speaker with passive bass radiators, 6000 mAh battery for 15 hours of playing time and charging of other devices through USB, and IPX7 waterproof.

Applicable to - SKU: JBLCHARGE3BLKAM, JBLCHARGE3BLUEAM, JBLCHARGE3REDAM, JBLCHARGE3GRAYAM, JBLCHARGE3TEALAM,  BLCHARGE3BLKEU, JBLCHARGE3BLUEEU, JBLCHARGE3REDEU, JBLCHARGE3GRAYEU, JBLCHARGE3TEALEU, JBLCHARGE3BLKAS, JBLCHARGE3BLUEAS, JBLCHARGE3REDAS, JBLCHARGE3GRAYAS.

Risk of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.

Charge 3 (with SN GG0301 - GG0314)

Battery type: Lithium-ion Polymer
(3.7V, 6000mAH)
· Power Supply: 5V / 2.3A
· USB charge out: 5V / 2A (maximum)

Dismantling & Reassembly Procedure JBL Charge-3

Assembly Procedure

Potential scrap risk on materials

Disassembly Process Step	Material	Est. F ailure Rate	Part Number
Step 1/2/3	Fabric grille	10%	WT0185001010
Step 5	Plastic Cover	1%	HZ0118005010
Step 6	Passive radiator	2%	000070 02301 1
Step 13	Rubber Button	100%	MF0064002010
Step 12	Speaker	1%	450050 17901
Step 8	Battery cover	5%	HZ0085010010
Step 15	Cable	0 5% .5%	EWA6HMMCH0010， EWF2016090100S， EWF2016090120
Step 16	Mic	5%	EXM4240150010

Note:
1. Make sure all the location where need to be fixed by screw
2. After reassembly, try to press one passive radiator and observe recover flat. 

If yes, it should be OK if you have no special sealing equipment to test.
3. Before test the set, the glue should be held for 4 hours for drying.

Harman Kardon Ultrawideband Linear Phase Casette Deck CD191 circuit diagram

Schematic and exploded view of the mechanism

Exploded view of the cassette deck mechanism

Exploded view

Full schematic [circuit diagram]