How to disassemble - Xbox 360 – Step by step disassembling procedure

Removing the top and bottom cover - Removing the Face-plate Top and bottom covers

 Pull up the bottom side of the front faceplate, and completely detach the whole piece.

If you bought the special open tool, insert the pin into the whole on top of the XBOX where the hard drive is docked. See below if you do not have the tool.

Instead you may put your finger under the top cover to the side of the DVD drive and pull up until the first two clips come out. Just lift the first 1/3rd.

Next with the torx screwdriver or special open tool pin, poke the whole in the exact place as illustrated to unclip the next clip. One on each side. The exact location is in-between and belowtwo solid holes of white plastic seen below.

The last clip on the side pictured of the top cover is accessible by removing the rubber support. However, I prefer stick my hand under and pull up so I do not have to remove it. Careful not to break the clips when you reach in and push the plate up. (If you remove the rubber pad, you can super-glue it back on.)

Now we have to turn the console over and take off the flat grey cover on the other side. Poke the 3 places as shown. Here is the 1st hole. There is another in the middle.

Here is the 3rd hole on this side. Next do the 3 clips on the other side the same way. Remove the piece, and set it aside.

Removing the White Outer shell 

(Continue to next page of you do not have the special tool.) Otherwise, turn to the back of the console, and put the 2 pegs on the side with the pin into the two holes above where the power cord plugs-in. (See below.)

Turn or push apart the case to loosen that side.

On the other side, put the corresponding pegs into the holes above the AV/HDMI TV port.

Turn or push to separate the console pieces.

Turn the console flat (horizontal), but also upside down as pictured. Notice the 4 clips on the front… Disconnect these with your finger, and pull up on the side of the case as pictured while you unclip the other side. Note that you will be voiding the warranty at this point by opening the console.

Here is the other side. Undo all the clips and pull the top of the case up (Technically the

bottom-side since the console is upside down.) It should be lose and you can lift up the cover now.

Picture of the removal of the first half. If you have used the open tool you’re done.

If still attached, hold the steel case XBOX down, and push the case cover backwards.

Here is a side view. Careful! It will pop out.

Now the top cover is off. Set aside.

DENON Blu ray player - DBT-3313 - Service mode - Factory reset - track lock mode - remote lock mode - test mode - firmware check - firmware updating procedure

DENON DBT-3313: SERVICE MODE
Initial setting mode
Preparation
(1) Equipment used: None
(2) Unit setting: No spec other than the following procedure.
Procedure
# Initialize the BD player when µcom, peripheral parts of µcom, or MAIN PCB. unit has been replaced in servicing.
# All user setting will be lost and its factory setting will be restored when this initialization is made. Be sure to memorize your setting for restoring again after the initialization.
(1) Turn on this model's power. "NO DISC" is displayed on the FL tube.
(2) Press the this model's PLAY  and NEXT buttons simultaneously. "INITIALIZING" is displayed on the FL tube.
(3) The display on the FL tube switches to "INITIALIZED", the "NO DISC" display reappears and initialization is completed.

Firmware version check mode
Preparation
(1) Equipment used: None
(2) Unit setting: No spec other than the following procedure.
Procedure
b Front-end and Back-end and SYS com version check mode.
(1) Press the SETUP button on the remote controller to display the SETUP menu.
(2) Press remote controller "3265".
(3) The version is displayed on the TV screen

Tray lock mode
Preparation
(1) Equipment used: None
(2) Unit setting: No spec other than the following procedure.
procedure
Setting
(1) Pressing the PLAY and PREVIOUS  buttons for simultaneously, plug the AC cord into a power outlet.
(2) "TRAY LOCK" is displayed on the FL tube and tray opening/closing is invalidated.
Cancel
(1) Unplug this model's AC cord from the power outlet.
(2) Pressing the PLAY and PREVIOUS buttons for simultaneously, plug the AC cord into a power outlet.
(3) "PLEASE WAIT" is displayed on the FL tube and tray opening/closing is enabled.
b The tray lock mode is also canceled when the product is initialized.

Remote lock mode
Preparation
(1) Equipment used: None
(2) Unit setting: No spec other than the following procedure.
Procedure
Setting
(1) Pressing the PURE DIRECT and NEXT  buttons for simultaneously.
(2) “Lock-On” is displayed on the FL tube, and operations with the remote control and the REMOTE CONTROL input
terminal on the back of the DBT-1713UD are disabled.
Cancel
(1) Pressing the PURE DIRECT and 9 buttons for simultaneously.
(2) "Lock-Off" is displayed on the FL tube and remote lock mode is made canceled.

All Lit / All Off mode for the FL tube
Preparation
(1) Equipment used: None
(2) Unit setting: No spec other than the following procedure.
Procedure
Setting
(1) Pressing the PURE DIRECT and PREVIOUS buttons for simultaneously, plug the AC cord into a power outlet.
If All Lit / All Off mode is set for the FL tube, the FL tube’s display area is fully lit.
(2) Press the PURE DIRECT button to ‘all off’ display.
Cancel
(1) Remove the power cable for 5 seconds or more to cancel All Lit / All Off mode for the FL tube.

Test mode
Entering the test mode
The test mode is entered by pressing the EJECT and PREVIOUS buttons simultaneously, plug the AC cord into a power outlet. When the test mode is set, the "PLAY" and "PAUSE" indicators light.

Selecting the mode

The following modes are available.
(1) Laser on/off (CD/DVD/BD) mode : T2
(2) Error rate (skew) measurement mode : T7
(3) Accumulated laser on time display mode : TC
(4) Test mode cancel : TI
When the NEXT button is pressed after entering the test mode, the display switches in the order: "T2, T7, TC, TI, T2

When the PREVIOUS  button is pressed, the display switches in the opposite order from q above, starting from the current
position (for example, if currently at "TC", it switches as follows: "T7, T2 ").

About each mode
With the mode selected, press the PLAY  button to set that mode.
(1) Laser on/off (CD/DVD/BD) mode
Press the PREVIOUS or NEXT button to select [X] and press the 1 button to set it.
Laser on/off control is executed and the laser current is displayed.

(X=1 : CD laser mode, 2 : DVD laser mode, 3 : BD(SL) laser mode)
(mmmm[mA] : Stored data, nnnn[mA] : Current value)
When the current value is more that BD: ±6[mA], DVD or CD: ± 12[mA] of saved data, it becomes the pickup transducer's target.
In this case, replace the mechanism unit.
When the 2 button is pressed, the layer above the current layer is displayed.

PROCEDURE FIRMWARE FOR UPGRADING THE VERSION OF THE FIRMWARE
You can update by downloading the latest version from the Internet.
Update from the Internet
preparation
(1) System requirements
# Internet Connection by Broadband Circuit
# Modem
# Router
# Ethernet cable (CAT-5 or greater recommended)
(2) Setting

Checking and updating the firmware

Check if the latest firmware exists. You can also check approximately time required to complete an update.
(1) Press the SETUP button on the remote control to display the GUI menu.
(2) Use the cursor buttons to select "General Setting" > "System" > "Firmware Update" > "Update check".
(3) Press the ENTER button.
# If the firmware on the website is latest, proceed to (4) Press Enter Button.
#  If the latest firmware has been already installed, press the RETURN button to return to SETUP menu.
(4) Press the ENTER button.
# When updating is completed, return to normal status about 20 seconds later.

Cautions on Firmware Update 
# In order to update the firmware, you must have the correct system requirements and settings for a broadband Internet connection.
# Do not turn off the power until updating is completed.
# Once updating starts, normal operations on this unit cannot be performed until updating is completed. Also, setting items of the GUI menu of this unit or setting items of the image adjustment may be initialized.
Note down of the settings before updating, and set them again after updating.

SAMSUNG HT-C550 - 5.1CH Digital Home Theater System - Initialization – How to Update the Micom – Troubleshooting – no power – No video HDMI – Region code setting – Power supply Schematic – ICE2QS03 – ICE3BR4765J

SAMSUNG HT-C550; Micom initializing
In no Disc condition, press ‘STOP’ button of Main Unit more than 5 seconds, VF Display will happen to INIT and M int. Then Initialization complete.

Micom Update
1. Prepare or Make a DISC-CD or DVD or USB that contains “C550WWM.SSP’ file for update.
2. Play the USB, then “updating” will appear on the screen, then Power will go out after showing ‘complete’ on the screen.
3. Press “Power” key and Press ‘Stop’ button of the remote control more than 5 seconds in No Disc.

Checking out MICOM & MPEG flash Version
1. On Root state, Select ‘Set up’.
2. Press “Enter” and move Support.
3. Press “Enter”.
4. Check product information: “SW ver” on TV Display and “Micom SW Ver” on Front ASS’y VFD.

DVD flash Initialization & Update
1. Prepare a DISC-CD or DVD or USB that contains ‘C550WWB.ROM’ file for Update.
2. Play the DISC or USB, then ‘Updating’ will appear on the screen, then Power will go out and on.
3. Then DISC-TRAY will open, then remove the DISC or USB, making the Unit as ‘NO DISC’ state.
4. Press ‘STOP’ button of Main Unit for more than 5 seconds, Display Indicator shows ‘INITIALIZE’ then Power goes out.

Troubleshooting

Main Power

No power detected
(Stand by LED off)

Check FR is ok

Check voltages CON3 Pin 12, 13, 14 is 5.4V?

Check voltages ICFB5401 Pin 1 is 2.5V

No Sound

1 . Check JA5 input signals. (1khz signal)

Check speakers. (speaker change)

2 .Check AIC4, AIC19 input signals (AC54, AC55, AC56, AC1, AC2, AC3)

Replace AMP IC. (AIC4, AIC19)

3. Check MPEG DAC output (1.7v offset) (pin 83, 84, 85, 88, 89, 90 of IC10 ES8398)

Check DAC output signal lines between IC10 and AIC4 and AIC19

4. Check DAC3.3V of IC10 (pin 86)

Replace IC10.

Check Power Lines. (Check IC36).

HDMI Video

Analog (Composite) Video OK but HDMI

1. Check Pin 117, 118, 120, 121, 123, 124, 126, 127 of IC10

Check HDMI POWER supply. (PLL_3.3V, VDD1.2v)

2. Check IC11 power (3.3V

Check 3.3V power lines

3. Check if 480p output Is ok.

Replace MPEG IC

4. Check Voltage pin110 pin of IC10 (1.5V~1.8V)

Check PLL3.3V lines and VDD1.2V lines and R150, R151, R152 value.

Replace MPEG IC

Buyer-Region Code Setting Method

1. Press the “AUX” button on the remote control.
2. Press the "TUNER MEMORY" button on the remote control during 4>5 seconds.

3. After step (2), you can see “TEST” on the VFD.
4. When you see “TEST” on VFD, Insert number “4”, “6” to start Region Code setting mode.

5. After step (4), you can see “− −” on the VFD. Insert the Region Code (Below table) corresponding model with “0 > 9” buttons on the remote control.

Area	HT-C550 Region Code
Africa / Pakistan	00
Brazil	01
Canada	02
China (semi_mic)	03
Europe	04
Indonesia / Hongkong	05
Japan	06
Korea	07
Latin American	08
Mexico	09
Philippines	10
Russia (full_mic)	11
Russia (semi_mic)	12
South Africa	13
Taiwan	14
USA	15
Newzealand	16
England	17
Australia	18
Iran (HACO)	19
India	20
Israel	21
Middle Asia	22
Asia	23
Singapore	24

Area

Block diagram and description

The loader reads disc data and it goes through SERVO part in MPEG ic(ES8393). The data from loader will be decoded by MPEG processing and Video data and Audio data will go out.
The firmware of MPEG ic is programmed to FLASH.
When MPEG is boot up, the data from FLASH is dumpped to SDRAM.
EEPROM will save back-up information from MPEG ic.
The video data goes out in two different ways. Analog video data is going out to composite and component jack via buffer ic(THS7374), and HDMI video data goes to HDMI jack directly.

The Audio data is going out to Power AMP block. The amp block will process the audio data from MPEG ic and the sound goes throgh speakers.
AUX2, AUX1, ipod, Tuner and mic data will go through ADC block in MPEG ic. The data from ADC will do the same processing like SERVO.
USB data from USB device and SPDIF data from optical jack also do the same things.
Audio Micom(LC87C5N) is the HOST controller of the system.
It will control MPEG ic, CEC micom, VFD, Touch key ic, tuner pack, and wireless module.

SMPS POWER SUPPLY SCHEMATIC: ICE2QS03 – ICE3BR4765J