Sunday, July 31, 2016

How to enter the service mode – Firmware update Pioneer DVR520H – Pioneer DVR 65H DVD recorder

Pioneer DVR 520H-S  DVR 65H-S  DVD recorder – Service mode – How to enter Service mode – adjustments - Software download and update procedure
Firmware download and update
DOWNLOAD METHOD
• The Download is Necessary When:
a) After model setting
b) When "NG" is displayed at First screen (version information, etc)
[Notes]
Be sure NOT to turn off the unit during downloading.
If the unit is turned off during downloading, the SYSCON, TUFLCON, and DRIVE programs may not be properly rewritten, in which case the unit may not be able to initialize itself normally when turned on again. If that happens, repair the unit, as described below, then perform downloading again:
• In a case where the power to the unit was shut off during rewriting of the SYSCON program:  The SYSCON program will not function properly if the power to the unit is forcibly shut off while the message "DOWNLOAD-  1" is displayed on the FL display during downloading. If downloading of the programs from the disc or through serial communication becomes impossible, replace the FLASH ROM.
• In a case where the power to the unit was shut off during rewriting of the DRIVE program:
The DRIVE program will not function properly if the power to the unit is forcibly shut off while the message "DOWNLOAD-2" is displayed on the FL display during downloading. If downloading of the programs from the disc or through serial communication becomes impossible, replace the DRIVE ASSY.
• In a case where the power to the unit was shut off during rewriting of the TUFLCON program (only for the flash-type TUFLCON microcomputers):
The TUFLCON program will not function properly if the power to the unit is forcibly shut off while the message "DOWNLOAD-3" is displayed on the FL display during downloading. If downloading of the programs from the disc or through serial communication becomes impossible, replace the TUFLCON microcomputer.
DISC DOWNLOAD METHOD
• How to Download
This is disc download method to save the initial setting data and user setting data.
However, the following data is deleted after downloading by this method.
* Disc history data
* REC mode
* Last channel (Before turn unit off)
1) Open a disc tray in the " DVD " function.
2) Put the download disc on the tray.
3) Press and hold a " STOP " button for playback, then press a " DISC NAVIGATOR " button on a front panel.
- The disc tray closes automatically and the disc is loaded.
- The disc tray opens automatically after loading.
4) Take out the Download Disc.
- " DISC DWLD " is displayed on FL and download is started.
- The display on FL changes to " DOWNLOAD-1 "
- The display on FL changes to " DOWNLOAD-2 "
- The display on FL changes to " DOWNLOAD-3 " (*)
- After download is completed, the power turns off, and turns on and a disc tray closes automatically.  * It takes for about 5 minutes until download is completed.
5) Press and hold a " ESC ", then press " DISP " on a test mode remote control unit for the release version confirmation.
6) Confirm a firmware release version.
7) Press " ESC " on a test mode remote control unit in order to exit the test mode.
" DOWNLOAD-3" is displayed only when the TuFL u-com is FLASH type.
Serial DOWNLOAD METHOD
[Notes]
This method is secondary way when the disc loading is impossible.
• JIGS
* PC with serial port
* RS232C straight cable
* RS232C I/F jig (GGF1348)
* 7P FFC (VDA1681)
* Download program (UFU.exe)
* Firmware
Connection
PC RS232C cable RS232C I/F 7P FFC DVD Recorder
How to Download
1) Connect the 232C I/F JIGS above way.
2) Turn on the PC and start the " UFU.exe ".
3) Select the Firmware file. ("sz0" file)
4) Turn the DVD recorder on and start the download program.  " Target Device is connected" is appeared on the screen.
5) Select the Communication Speed (Baud Rate)
a) Base Speed 38,400
b) Data Send Speed 115,200
6) START
* Even if you click "START" button, sometimes "Communication Error" may come out one to twice, and download may fail.  In this case, please click "START" again.
* Other factors can be considered if download fails 3 times or more.
* And it takes about an hour for updating the firmware.
SERVICE MODE
• Details on HDD data are described below:
HDD : WDC10234564 # 80
Name of manufacturer, part No. by manufacturer
HDD identification error indication
Capacity of the HDD (unit: Gbytes)
If any abnormality exists in HDD connection, the indications shown in Table 1 below are displayed.
For service operations, use the GGF1381 remote control unit for service.
The Service-mode screens consist of nine mode screens, which are classified into such rough categories as recording system and VR playback system, and their sub screens.
• How to enter Service mode 
Press the ESC then DISP keys in turn while no GUI is displayed. The first screen (version information, etc.) shown below is displayed.
• How to exit Service mode: Press the ESC key.
• How to advance to the next Service-mode screen
: While the first screen is displayed, press directly one of the keys 1-9. For service, use the
keys 2, 4 or 5, as shown below.
• How to advance to a sub screen within the same Service-mode screen
 
Press the DIG/ANA key. Pressing the DIG/ANA key repeatedly will change the sub screens within the same Service-mode screen cyclically.
The Service-mode screens to be used for service are as follows:
1 = First screen: Version information, etc.
2 = Second screen: ATA/ATAPI debug screen (Writer data)
4 = Fourth screen: Error log for the VR recording system
5 = Fifth screen: Error log for the VR playback system
[After entering one of the Service-mode screens, if you wish to shift to another Service-mode screen, exit Service mode first, then reenter Service mode and select your desired Service-mode screen.]
Description of Each Service-mode screen
First screen (version information, etc.)
1 Model name/destination
2 Version of the recorder software
3 Revision No. of the system-control computer software (Edition administration No. [from top to bottom, common software, firmware, application software])
4 Version No. of the tuner microcomputer, Mask or Flash
Result of the combination check with system u-com.
5 Information on the built-in drive (Model name, version No., model type, serial No.)
6 Data of the built-in HDD, capacity of the HDD
7 Version No. of PRISM
8 Region No.
9 CPRM data (CPRM key No.)
0 FLASH ROM information.
While the first screen shown above is displayed, press the DIG/ANA key to enter the sub screen shown below.
Note: Each time the DIG/ANA key is pressed, the display changes between the first screen and its sub screen.
While the first screen shown above is displayed, press the DIG/ANA key to enter the sub screen shown below.
Note: Each time the DIG/ANA key is pressed, the display changes between the first screen and its sub screen.
Note: Be sure to start playback after displaying this sub screen to calculate the error rate.
During playback in VR mode, the average error rate of the past 10 VOBUs is displayed, and during playback in DVD-Video or Video mode, the average error rate of the past 256 sectors is displayed. During playback in VR mode, the rotation rate of the drive (/: normal speed, no display = double speed) is also displayed.
How the data on cumulative HDD-on time are processed in memory
Storage place: Backup SRAM, Flash ROM
Timing of referring to the data on cumulative HDD-on time: When the power is turned on, the backup SRAM is referred to regarding the data on cumulative HDD-on time, and the data are stored in the RAM. If referring to the backup SRAM fails, the flash ROM is referred to.
Timing of updating the data on cumulative HDD-on time: While the HDD is on, the data on cumulative HDD-on time in the RAM is updated every 3 seconds, and every time updating is executed the data are stored in the backup SRAM. When the power is turned off, the data are stored in the flash ROM.
How to clear the data on cumulative HDD-on time
Backup SRAM: When the HDD Identification Setting is performed, the data on cumulative HDD-on time are automatically cleared.  The HDD Identification Setting is automatically performed when the CPRM setting is performed on the CPRM setting screen (to display the CPRM setting screen, press the ESC then the STEREO keys).
Notes: The data on cumulative HDD-on time are not cleared when resetting to factory-preset values is performed.
The data on cumulative HDD-on time are not cleared when the system-control computer software is downloaded.
Flash ROM: The data on cumulative HDD-on time cannot be cleared (they are not cleared even if resetting to factory-preset values is performed or if the system-control computer software is downloaded).
Note: The data on cumulative HDD-on time in the flash ROM can be cleared if you clear the data in the backup SRAM following the above-mentioned procedures then turn off the power of the unit, because the data in the backup SRAM are stored in the flash ROM when the power is turned off.
When "NG" is displayed at First screen (version information, etc)
NG+ : Version of the tuner microcomputer too advanced
NG- : Version of the tuner microcomputer too old
1. When TUFL u-com is MASK type
NG+ : Download the firmware.
NG- : Replace the TUFL u-com or JCKB ASSY.
2. When TuFL u-com is FLASH type
NG+ : Download the firmware.
NG- : Download the firmware.
(*2) NG : NG (improper drive)
Replace the correct Drive Assy.
(*3) NG+ : Version of the drive too advanced
NG- : Version of the drive too old
NG+ : Download the firmware.
NG- : Download the firmware.
(*4) NG : Serial No. of the drive not registered  Check the part No. and replace the correct Drive Assy.

Saturday, July 30, 2016

Samsung Home Theater System HT-X810 – How to troubleshoot – How to reset - mechanism disassembly

MICOM Initialization & Update
Micom Reset
During STANDBY mode , push the ‘Remote controller’s STOP’ button 5 Second.
If blue LED blinking, reset is finished.
Micom Update (Only for Flash Micom)
Back of the Set there is a slide hole for update JIG.
To update Micom, it need Computer, Rom Writer, USB Cables
Micom & MPEG Version Check
1) Play Disc or USB
2) Eject(Open) Disc , Push the Remote Controller “MENU” button.
3) Push the number ‘8’, ‘9’, ‘5’ in order, and push ‘Enter’ button.
4) Check the display or OSD
DVD flash initialize & Update method
1) Prepare HEX file at DISC or USB Memory
2) Insert Disc or USB Memory, and play. ‘Updating’ will be displayed. Set will be power off à on
3) The disc is automatically ejected. (If you use USB memory, detach USB memory)
4) During “No Disc” Displayed, push the stop button 5 seconds. After displayed ‘INITIALIZE’ power off
5) Finished.
Wireless Subwoofer Reset
Wireless Reset
1) Sub Woofer
During STANDBY mode , push the “Reset Button” which is located at the backside of the subwoofer.
Blue Led on
Push the button more then 5 seconds.
blue and red led are blinking commonly,
Red led turned off during push the reset button
Main SET
Push ‘Remote controller’s button 0,1,3,5
If RED LED blinking, reset is finished.
SMPS Protection Trouble shooting
The Condition of Power Protection Active
1 > Voltage of SMPS’s PVDD (+28V,CN2) is higher or lower than Standards
Normal Condition Voltage Range : PVDD(+28V,CN2) : about 28V
2 > Over-current occurs to AMP IC (Over-output or Output short – speaker wire short)
3 > AMP IC’s temperature exceed 150
4 > No supply voltage on GATE DRIVER (AMP IC – AMP PCB PCON2 OPEN)
SOUND - TROUBLE SHOOTING
If there is no sound, check the speaker wires and AMP PCB
1) Speaker wire connection (short - protection)
2) AMP IC Resistance (output channel)
(Caution: Do not connect the power cord during this test)
VIDEO - TROUBLE SHOOTING
If there is no video out, check ic and wires
1) Check the ACON1 (ANALOG VIDEO,COMPONENT OUT) AMP IC Resistance (output channel)
2) Check the video IC (for ANALOG)
3) Check the HDMI TX IC (for Digital HDMI video)
4) Check the HDMI connector HCON1
Communication Failure Trouble Shooting
Set not working > Reset line problem > Reset line (Micom#8, MPEG#83
RESET Insecure: It should be 3V(MPEG IC), 5V(MICOM) after power ON
Specific disc cannot play [Dual] > 3.3V, 5V drop > MVCC, RF50V, VD33RF
Malfunction and insecure play > 3.3V, 1,5V drop > PIC 1117ACE voltage
No action and No play > MPEG-MICIM communication line open or short .
TXD: Micom#6 > Mic5#15
RXD: MICOM#72 > MIC5#2
STB: MICOM#73 > 72-MIC5#17
ACK: MICOM#70-MIC5#4
MPS Check Flow Trouble shooting
Disassemble (MECHA-DECK)
Troubleshooting chart

Friday, July 29, 2016

Sony TA F30 Integrated Stereo Amplifier - Circuit Diagram and wiring diagram - US, UK AND Canadian models

Transistorized 30+30WRMS stereo amplifier - old model - circuit diagram and wiring diagram, PWB and exploded view
Circuit diagram
Wiring diagram PWB and exploded view

Wednesday, July 27, 2016

How to disassemble VIZIO L42HDTV10A and VIZIO GV42L HDTV

Rear cover removal
Main SD assembly removal
Main assembly and power assembly
Rear cover 

Disc changer Disassemble procedure – Sony RCD W500C COMPACT DISC RECORDER

How to disassemble the disc changer mechanism of Sony RCD W500C CD recorder
Fitting Base (Magnet) Assy
CLAMP MOTOR Board, Motor (Clamp) Assy (M701)
Fitting Base (Guide) Assy, Bracket (Chassis)
Tray (Sub)
1 Rotating the pulley (LD), shift the slider (selection) in the arrow A direction.
2 Rotating the pulley (mode) in the arrow direction adjust the tray (sub) to be removed.
3 Rotating the pulley (LD), shift the slider (selection) in the arrow B direction.
4 Rotating the pulley (mode) in the arrow direction remove the tray (sub) to be removed.
Chassis (Mold B)
LOAD MOTOR Board, Motor (Loading) Assy (M702)
Stocker Section

Slider (Selection), Tension Spring (Shutter), Slider (Shutter)
Gear (Gear A), Gear (Gear B), Gear (U/D Slider)
Precaution during Gear (Gear U/D Slider), Gear (Gear B), Gear (Gear A) Installation
Gear (Chucking)

Tuesday, July 26, 2016

How to disassemble Philips HTS3565D - 3566D-37 DVD Home Theater System

Dismantling of the Front Panel Assembley
Open the DVD Tray by using the Open/Close Button while the Set is ON and disconnect the mains supply after removing the Tray Cover.
Note: If this is not possible, the DVD Tray has to be open manually.
1) Take a mini screw driver about 2mm diameter and make a marking 24mm from the tip as shown in figure. Place the set on its side, insert the mini screw driver till the marking and slide it towards the right as shown in figure until the Tray moves out of the Front Panel.
2) Return the set to its upright position and remove the Tray Cover as shown in Figure and close the tray manually by pushing it back.
3) Loosen 7 screws and remove the Top Cover by lifting the rear portion upwards before sliding it out towards the rear.
- 1 screw “A” each on the left & right side as shown in figure.
- 5 screws “B” at the back panel as shown in figure
4) Loosen 1 screw “C“ each left & right side on the front panel after move the top panel as shown in figure.
5)Loosen 6 screws “D” at bracket of front panel as shown in figure.
Dismantling of the AMP Board
Loosen 4 screws to remove the AMP Board.
- 2 screws “ E “ on the top of AMP board as shown in figure.
- 2 screws “ F “ at the back panel as shown in figure.
Dismantling of the Main Board
Loosen 2 screws “ G “ on the top of main board as shown in figure.
Loosen 7 screws “H” at the back panel as shown in figure.
Dismantling of the Power Board
Loosen 4 screws “ I“ on the top of power board as shown in figure.
Dismantling of the IPOD Board & Dismantling of the DVD Module
Loosen 2 screws “K” at the back panel as shown in figure.
Loosen 4 screws “L” as shown in figure.
Service position A (main unit) and service position B (main unit)
Note: In some service positions the components or copper patterns of one board may risk touching its neighboring printed circuit boards or metallic parts. To prevent such short-circuit use a piece of hard paper or other insulating material between them.