Monday, 30 January 2017

How to change the region code - Parental control - Bose 321 Home entertainment system

Bose 321 Home Entertainment System
Bose 321 GS Home Entertainment System
(US/Canada, European, UK, Australia, Japan and Dual Voltage Versions)
Changing the 321 Console Region Code
You can only change the region code for a console a total of 4 times. After that the console will set the region code to the last one changed to permanently.
1. Connect the B+B RS-232 to TTL converter to one of the serial data ports on the back of your IBM compatible PC. Connect the TAP interface cable, part number 266603, to the B+B converter. Plug the other end of the cable into J1 of the 3-2-1 console display board. This connector can be accessed from outside the cabinet, under the right side of the front of the console.
2. Set up your computer as shown in the computer setup procedure in the appendix of this manual.
3. Power up the 321 system console. On the PC, open the terminal window that you have set up using the computer setup procedure. Open the connection between the PC and the console.
4. On the console, place a DVD disc of the region that you want to change to into the console tray. For example, if you wanted to change a region code 1 console to region 2, you would place a region code 2 DVD disc into the console. Let the disc spin up. The display will read "loading".
On the PC, type in the applicable TAP command from the table below and press ENTER on the keyboard. The region code will have changed to the new region.
Regions Covered Region
Code Command MRGN Command
Response
U.S., Canada, Puerto Rico 1 LXTP09 MRGN04xx01FE01
Europe, Middle East, Japan 2 LXTP0a MRGN04xx01FD01
Southeast Asia, Hong Kong, Taiwan 3 LXTP0b MRGN04xx01FB01
Central America, Mexico, South America,
Australia, New Zealand 4 LXTP0c MRGN04xx01F701
Russia, Africa (except Egypt and South Africa),
India, Pakistan 5 LXTP0d MRGN04xx01EF01
China 6 LXTP0e MRGN04xx01DF0
You can check to see what region code your console is set to by typing in the MRGN command in the terminal window. The console will respond with a message.
At right you will see that the console has responded MRGN040201FE01. The first two characters after the MRGN are 04, and they indicate the number of times that the drive manufacturer can reset the drive. It will almost always be 04. 
The next two characters are the number of times remaining that a service center can reset the region code. In this example there are two more changes (02)
remaining. The next two characters (01) are the type code, which indicates the status of the drive: 00 = no drive region set; 01 = drive region set; 02 = drive region set /w additional restrictions (last chance), 03 = drive region has been set permanently. This number increments when the drive approaches the last time it can be changed before it is set permanently to the selected region. The next two characters are an eight bit hexadecimal representation of the region that the drive is currently set to. In the example, the FE corresponds to region 1. The other regions are listed in the table above. The last two characters are for the CSS encryption. For all units in the field, these two characters will always be 01.
Parental Control Information
The parental control circuitry prevents unauthorized viewing of DVDs above a user specified setting. The user is required to set a four number password for DVDs with ratings above the rating set by the user. If a user forgets what his four number password is, he/she will not be able to view movies above the set rating. If a customer has forgotten his password, there is a generic password that can be used to bypass the lock-out. The password is BOSE (2673), as spelled on a telephone. Once the original password has been bypassed, the customer can set a new one.
The parental control settings used in the 3-2-1 Home Entertainment System are from 1 to 8, with 8 being the lowest security and 1 the highest. See the table below for an listing of the settings and how they correspond to the various Motion Picture Association of America (MPAA) ratings.

DVD Rating
General Description of Rating
MPAA Rating
8
Unrated (generally most restricted)
7
Adult audiences
NC-17
6
Mature audiences
R
5
Mature teenage audiences
4
Teenage audiences
PG-13
3
Mature young audiences
PG
2
Most audiences
1
General (unrestricted audiences)
G

Sunday, 29 January 2017

Landice L series commercial treadmill – Speed calibration - components testing procedure – Troubleshooting

TESTING COMPONENTS
1. MOTOR COMPONENTS
DRIVE MOTOR:
Generation Test – all Landice drive motors (110 & 220) are direct current or DC. A DC drive motor can produce (generate) a DC voltage when it’s manually rotated. The DC output is linear to the speed the motor is rotated. To perform the “Generation Test” follow these steps:
1. Un-plug treadmill from wall outlet.
2. Disconnect drive motor from motor control board.
3. Connect DMM (Digital Multi-Meter) to the drive motor wires.
Note: Your DMM should be set on Volts DC (VDC)
Motor plus (+) = Red test lead from DMM
Motor minus (-) = Black test lead DMM
4. Position your DMM so you can read it while standing on the treadbelt.
5. Start to manual push / run on the treadbelt.
Note: You are spinning the drive motor manually. The faster you spin the motor, the higher the output of DC voltage will register on your DMM.
110 VAC treadmills use a 90 VDC drive motor. For every mile per hour you spin the drive motor you will generate approximately 10 VDC output. So, at 1 mph you will measure 10VDC +/- and at 9mph you will measure 90VDC +/-. 220 VAC treadmills use a 180 VDC drive motor (double the input voltage, double the size of the drive motor). For every mile per hour (mph) you spin the drive motor you will generate approximately 20 VDC output. So, at 1.0mph you will measure 20 VDC +/- and at 9.0mph you will measure 180 VDC +/-.
If you measure very low DC voltage or zero DC voltage, first check the drive motor brushes for condition. Motor brushes are the leading cause for drive motor failure. If the motor brushes are worn below 3/8” in length, replace them. 
Alternate Test 1: Attach 9 volt battery to motor leads. There should be motor movement.
Alternate Test 2: Unplug Treadmill. Disconnect Drive Motor wires. Disconnect Drive Belt. Hold black and white wires together. Spin flywheel. There should be resistance when wires are connected.
ELEVATION MOTOR
Using your voltmeter measure the input voltage (AC) to the elevation motor. Secure the black (negative) meter probe to a good chassis ground. Place the red meter probe on the RED wire in the elevation harness. Press the elevation DOWN key and you should get 120 /220VAC. Place the red meter probe on the BLACK wire in the elevation harness. Press the elevation UP key and you should get 120/220VAC. If the elevation motor is getting the proper AC voltage in but does not turn, replace it.
ELEVATION POTENTIOMETER
Remove the elevation pot from elevation motor but do not disconnect the brown, orange and blue wires. Using a digital voltmeter set to ohms (Ω), place meter probes on the pot prongs with the
(orange) and (brown) wires. You are measuring resistance so you do not need to observe polarity.
# Turn pot shaft completely clockwise (0-1000Ohm).
# Turn pot shaft completely counterclockwise (1000-0Ohm).
Now place meter probes on prongs (orange) and (blue) wires.
# Turn shaft of the potentiometer completely clockwise (1000-0Ohm).
# Turn the shaft in completely counterclockwise (0-1000Ohm)
If the elevation potentiometer does not indicate the proper resistance readings, it is must be replaced. 
Note: Potentiometer should fit snugly into motor. Check for tight fit. Also check that nut on Potentiometer is tight.
2. MOTOR CONTROL COMPONENTS
PWM MOTOR CONTROL
The PWM board runs on AC voltage. The AC voltage is delivered to the PWM board across two input terminals marked L1 and L2. Confirm AC voltage into the PWM by measuring across these terminals with your voltmeter. You should measure 120/220VAC input. The DC voltage comes out of the PWM board (going to the drive motor) across two output terminals marked A+ and A-.
Confirm DC voltage out by measuring across these two terminals with your voltmeter. You should measure 90/180VDC output. If the PWM board is getting the proper AC voltage in but does not supply any DC voltage out, it must be replaced. 
SCR MOTOR CONTROL
The SCR board runs on AC voltage. The AC voltage is delivered to the SCR board across two input terminals marked HOT and NEUT. Power up treadmill in OLS mode and bring displayed speed to the max. Confirm AC voltage into the SCR board by measuring across these terminals with your voltmeter. You should measure 120/220VAC across these terminals. The DC voltage comes out of the SCR board (going to the drive motor) across two output terminals marked MTR+ and MTR-. Confirm DC voltage out by measuring across these two terminals with your voltmeter. You should measure 90/180VDC output. If the SCR board is getting the proper AC voltage in but does not supply any DC voltage out, it must be replaced.
RELAY BOARD
The relay board runs on AC voltage. The AC voltage is delivered to the relay board across two input terminals marked HOT and NEUT. The AC voltage then passes through one fuse or two (220 models) and lights the AC PWR led light. If this LED light is not on, first check the fuse/s. If the fuse/s are good measure across the input terminals HOT and NEUTRAL to confirm proper AC voltage in (110/220VAC). If the relay board is receiving the proper AC voltage in but does not function properly, it must be replaced.
SPEED SENSOR
The speed sensor can be checked for proper operation by entering the Open Loop Speed Mode.
There is a yellow SPD LED mounted to either the relay board (HOME PWM models) or the SCR board (LTD and CLUB models). The light will flash ON and OFF when you rotate the drive motor flywheel slowly by hand. This indicates the proper operation of the speed sensor. If you do not get this flashing to occur, then check for proper speed sensor alignment. If this does not help, replace the speed sensor.
3. DISPLAY COMPONENTS
12 VDC POWER SUPPLY
Measure across the input terminals for AC line voltage (120/220VAC). Measure across the output wires for DC voltage (12.0VDC to 17.0VDC is acceptable). If you confirm proper input voltage (AC) and have no output voltage (DC) the DC power supply must be replaced.
UPPER DISPLAY BOARD
The upper display board is powered by DC voltage. On HOME treadmills this DC voltage is supplied by the DC power supply. On LTD/CLUB treadmills the SCR board supplies this DC voltage. Confirm the upper display is getting DC voltage delivered to it. If the display board has the proper DC voltage supplied and does not light, it must be replaced.
FACEPLATE
The faceplate has no mechanical or electrical components that can fail. However, if you press a key and it fails to respond check for proper display board spacing. The faceplate is designed as a passive panel. When the user presses a key (pushes through the faceplate) they activate a switch mounted on the upper display board. If the display board to face plate distance is too great, the display board switch will not be fully activated and result in a dead response. Small washers are placed between the display board and mounting studs to adjust this distance. This is performed at the factory but can be upset if disassembled in the field.
MEMBRANE PANEL
The membrane panel has small micro switches laminated inside that transmit the user’s commands into treadmill functions. Enter “Diagnostic Mode” to confirm proper operation of the membrane panel. In this test mode you will be able to check each key on the membrane panel. By pressing a key, you will hear an audible beep and also see a numeric code appear in the speed window. There is a numeric code assigned to each key on the panel (except the OFF key). For a complete list of these codes, see the chart on opposite page. If you do not hear a “BEEP” or see the proper code appear the key is bad and the membrane panel must be replaced.
TROUBLESHOOTING
Symptom: Treadbelt feels like it’s slipping or grabbing when walked on.
Possible Cause: 
Loose drive belt or treadbelt. Adjust as per manual. Remember to adjust only till slipping stops. DO NOT OVERTIGHTEN
Possible Cause
: Worn treadbelt and/or deck. If treadbelt or deck is worn it will cause excessive friction and the user will feel like belt is slipping or grabbing.
1. Reach hand under front of treadbelt and see if deck feels rough, grooved, or if you see bare wood. These are signs the belt needs to replaced and the deck needs to be reversed or replaced if it has already been reversed.
2. Compare the outer edge of the treadbelt to the middle of the treadbelt. The outer edge wears less since the user walks near the center of the belt. You will be able to see the cross weave of fabric on a good treadbelt. This cross weave design traps air inside tiny pockets. The treadbelt glides on this trapped air. When a belt wears, the cross weave becomes flat and smooth. This is not good because there are no more pockets to catch the air. If the center of the treadbelt is smooth (glazed) and exhibits black streaks it’s time to replace.
3. If amp draw is high (8 amps or more on home) it is advisable to check belt and deck for wear. Tip: If Red Current Lamp is lit then Amp Draw is high. TREADBELTS AND DECK SURFACE SHOULD ALWAYS BE REPLACED TOGETHER IF EITHER IS WORN OUT.
Symptom: Treadmill slows down when user steps onto treadbelt.
Possible Cause
: Worn out treadbelt or deck. See above.
Possible Cause: Worn or defective motor brushes and/or scorched commutator on drive motor.
Dress out commutator and replace brushes.
Possible Cause: Demagnetized stator magnets on drive motor.
Make sure that treadmill is unplugged! Disconnect drive motor from lower circuit board. Hold the two motor wires, Black A+ and White A-, together and rotate the motor flywheel by hand. Get a good feel for the rotational friction of the drive motor. Then disconnect the two motor wires and rotate the drive motor by hand. If the drive motor begins to spin much easier, then your motor is not the problem. If you notice no difference, then replace the drive motor. NOTE: A good drive motor will spin freely with little friction when disconnected from the lower circuit board. If the two motor wires are connected together, the drive motor will become much harder to rotate. Also see:
Component Testing –Drive Motor
Symptom: Treadbelt is moving diagonally.
If a belt is moving diagonally on the treadmill it can be corrected with the following steps:
1. Loosen the take up roller (both sides)
2. Take off the motor cover.
3. Loosen the drive roller adjustment bolt on the right side (opposite the sheave pulley).
4. Using a large screw driver or pry bar move the drive roller forward if the belt is angled right to left or backward if its angled left to right.
5. Tighten drive roller until star washer bites into aluminum frame, start treadmill, and adjust tracking. If belt is straight then put on motor cover. If belt is still not straight, go to #6.
6. If there is improvement and there is still room to move drive roller adjustment bolt, continue to adjust until fixed.
7. If there is no more adjustment on right side adjustment bolt, go to left side adjustment bolt ( make sure to loosen the drive belt via the drive belt tension adjustment bolt and re-tension when done).
Symptom: Treadmill speed is erratic and/or surges.
Possible Cause
: Defective drive motor
See Component Testing -drive motor:
Possible Cause: Loose drive belt or treadbelt.
Check for proper drive belt and treadbelt tension. If one of these belts are not tight enough, they will slip and create a treadbelt skip or surge. This will usually be more apparent with heavier users.
Possible Cause: High drive motor current due to excessive treadbelt friction.
Check for treadbelt and tread deck for wear. Check that Red Lamp marked Current is not on.
Possible Cause: Worn or defective motor brushes and /or commutator.
Check Motor brushes move freely in holder. Brushes should be at least ¼ inch long, approximately the same length, and free of cracks, splits, and fraying.
Possible Cause: Line voltage surging.
Use voltmeter, monitor line voltage supply. Make sure customer has the treadmill plugged into a circuit that meets our electrical requirements. (Home & LTD Treadmills = 120V / 20 amp dedicated circuit), (Club Treadmills = 220V / 15 amp dedicated circuit)
NO extension cord should exceed 6 feet in length and must be 12Awg, same as linecord.
Possible Cause: (PWM boards ONLY Home Mills) IR potentiometer out of adjustment.
Adjust the IR “pot” on the lower motor control board until the surge subsides.
SPEED CALIBRATION: L-SERIES PWM TREADMILLS
1. Enter the O.L.S. Mode (Open Loop Speed) by pressing “MENU” and “START” simultaneously for Executive Trainers and “FAST” and “START” for all other models.
2. Adjust the max speed first. Bring the set speed to 12mph. Let actual speed stabilize.
3. Adjust the MAX potentiometer on the PWM motor control board accordingly.  CW = increase speed / CCW = decrease speed.
The actual speed will be displayed in the center display window.
4. Decrease set speed to 2.0mph. Let actual speed stabilize. Adjust the MIN pot accordingly. (1.9 to 2.1mph is acceptable)
5. Before turning treadmill off, check the MAX speed one more time for accuracy. If speed calibration does not fix problem suspect relay board failure.

Saturday, 28 January 2017

LG VENTILATION DRYER TD V70120E AOWEECI Troubleshooting

Child Lock
For the safety of your children, press Low Temp and Wrinkle care buttons at the same time for about 3 seconds. You can check this function by seeing the dryer display on LED window.
Wrinkle care
Wrinkle care is functioning to prevent creases and rumples that are formed when the laundry is not unloaded promptly at the end of drying cycle. In this function, the dryer repeatedly runs and pauses to the cycle end.
If the door is open during Wrinkle care process, this function is cancelled. If the door is opened during normal operation without selecting Wrinkle care, this function will be remembered and processed.
Level the dryer
Leveling the dryer is to prevent undesirable noise and vibration.
Place your dryer in a solid and level area where water is not dripping, freezing.
If the dryer is not properly level, adjust the leveling legs up and down as necessary.
Turn them clockwise to raise and counterclockwise to lower until the dryer is not wobbling both front-to-back and side-to side.
Diagonal Check
When pushing down the edges of the washing machine, the machine should not move up and down at all.
(Please, check both of two directions) If machine rocks when pushing the machine top plate diagonally, adjust the feet again.
Leveling legs should be secured.
All four legs are stably placed on the solid and even floor.
If dryer is not level, laundry may not tumble properly and sensor will not detect the accurate humidity information.
When leveling, please be cautious not to injure your fingers and toes.
Vent end will face to the outside home and improper taping and unstable installation of vent will cause undesirable drying performance.
Exhaust Requirements and Instructions
1. Venting materials are not provided with the dryer and you should obtain the necessary venting materials locally. For example, the outer end of exhaust pipe must have a weather hood with hinged dampers to prevent back-draft when the dryer is not in use.
2. The exhaust duct must be four inches (10.2 cm) in diameter with no obstructions. The exhaust duct should be kept as short as possible. Make sure to clean any old ducts before installing your new dryer.
3. Rigid or semi-rigid metal ducting is recommended for use as transition ducting between the dryer and and the wall. In special installations when it is impossible to make a connection with the above recommendations, then a UL-listed flexible metal transition duct may be used between the dryer and wall connection only. The use of this ducting will affect dry time.
4. DO NOT use sheet metal screws on exhaust pipe joints or other fastening means which extend into the duct that could catch lint and reduce the efficiency of the exhaust system. Secure all joints with duct tape.
5. To maximize operating results, please observe the duct length limitations noted.
Change the Bulb
No any special tool is needed for this work.
All steps can be done by hand The bulb itself could be very hot when the dryer just finishes its operation. So before changing the bulb, be sure that the inside of the drum is cool down.
1. Open the door, put a hand into the drum and grasp the bulb cover.
2. With bulb held by hand gently, turn the bulb cover clockwise.
3. Separate the bulb cover from the socket housing.
4. Remove the current bulb turning it to Counter clockwise. Be careful that it does not fall off.
5. Replace in the new bulb in the reverse unscrewing direction.
DIAGNOSTIC TEST
No power to the dryer or the controller
Power voltage is within standard range (AC 215V~245V)? 
  No
Check the - Circuit breaker
Check after pulling Black(RLY1), Blue(RLY3) 2 pin connector out from controller.
Check the range of two pin (Red)~ (Black) is within AC 215~245V?
  Yes.
Check or replace the controller
  If NO
Check connection of power cord and harness assembly.
Check White 1pin (Red wire), White 2 pin(Black & white wires) of connector and secure that range is between AC 215~245V?
  If NO
Check or replace the power cord
  If yes
Check the short of harness assembly and the connection (WH1)
In the case that the dryer is not working, when controller is powered and display button is properly working, Check RLY1,RLY2, RLY3, WH1 in the controller.
DOOR SWITCH / LAMP CHECK
Malfunction of lamp operation and door switch No operation of pump motor
Check if they are working while being connected to power supply.
When door is opened, lamp turns on? (Tumbling stops)
  No?
Check door switch movement. Check and replace lamp.
  If yes
When door is closed, lamp turns off?
When “Start” button is on, the dryer is working?
  If yes
Door switch is working normally
  If  No
When door is opened or closed, door switch hook is not broken?
  If No
Replace door hook and close the door
  If yes
With door closed, check voltage of connector RLY1 ~ RLY3 which are pulled out from controller in advance. The voltage range is between AC 215~245V?
  If no
Door frame is distorted
Check door switch
  If yes
Check or replace Controller Assembly Replace Harness and connector
With door closed, check voltage of connector RLY1 ~ RLY3 which are pulled out from controller in advance. The voltage range is between AC 215~245V?
  If no
Check Harness
  If yes
Check and replace controller.
Motor malfunction, ventilation error
Measurement condition : Power cord is unplugged.
Door is closed.
Pre-Check door switch
(If door switch has contact problem, motor is not working.)
When power is on, motor is rotating.
  If yes
Check or replace Controller - TR1, TR2 broken
  If no
During operation, motor noise is generated. And drum and blower are not working.
  If yes
Check belt is burst.
Check structural restriction.
  If no
With BL3 being unplugged from Controller,
BL3 - BL3 resistance. 1~2
BL3 - BL3 resistance 1~3
BL3 - BL3 resistance 2~3 measurement ranges 10 Ohms 20 Ohms ?
  If No
Check or replace Motor
- Check Motor TP
Check Harness connection
  If yes
 Check controller
Heater is not working. Drying failure. 
The designated temperature is not reached
Measurement condition
Power cord is unplugged.
With RLY1,RLY2, RLY3 disconnected from Controller,
RLY2 (Yellow) - RLY3 
(Blue) resistance ranges
26Ohms32 Ohms?
RLY1 (Blue) - RLY3 (white) resistance ranges 53 Ohms~59 Ohms?
  Yes
Check and replace controller.
Relay RTY2, RTY3
  No
When check thermostat to Heater, it is less than 1 Ohm ?
  Yes
Replace Heater
Check Harness connection
  If No
Check or replace Controller Assembly
Replace Harness and connector
Heater On/Off occurs frequently
1. Clean Condensing unit 
2. Check if Lint filter is damaged or clogged
Thermister check
Symptom : Poor drying performance(over-drying or no drying). Abnormal thermistor operation
Symptom : Poor drying performance(over-drying or no drying). Abnormal thermistor operation
With RD4, NA4 disconnected from Controller, check
TH-Heater
RD4  - RD4  resistance ranges table data according to surrounding temperature?
TH-Drum
NA4  - NA4  resistance ranges table data according to surrounding temperature?
  If yes
Check and replace controller.
  If no
When measuring "TH-Heater"
Thermistor, they range Table data ?
  If no
Replace "TH-Heater"
Thermistor
  If yes
When measuring "TH-Drum " Thermistor, they range Table data ?
  If no
Replace "TH-Drum"
Thermistor
  If yes
Check Harness
Trouble Symptom : Drying Failure
Measurement condition : Power cord is unplugged.
With RD4 disconnected from Controller, RD4  - RD4  resistance is unlimited?
  If no
Check Harness
Check if Sensor tips have foreign objects
   If yes
With metal tape attached to Sensor tips, RD4  - RD4  resistance is less than 10 Ohms ?
  If no
Check Harness
- Open, Connector is disconnected
  If yes
After damp clothes touch Sensor tips, the range are within the below table when QA-test?
  If no
Check and replace the controller

Friday, 27 January 2017

How to set the Region code, password change, software upgrade - Philips DVD Home Theater System HTS3270

System Reset
a) Press “SETUP“ button on R/C,TV will show setup menu
b) Select the menu using the Dn and Right on R/C
c) Go preference page to do system reset.
Region Code Change
a) In open mode, press”9” “9“ “9“ “9“ on R/C, then input desired number to change region code :
1 USA
2 EU
3 AP
4 Australia ,NZ , Latam
5 Russia , INDIA
6 CHINA
Version Control Change
a) In open mode, press “1“ “5“ “9“ on R/C
b) Press “OK” button to con! rm
c) TV will show message as below:
Current model HTS3270/12/05
Version: XX.XX.XX Release:XXXX.XX.XX
region :2 Servo:XX.XX.XX.XX
8032:XX.XX.XX.XX RISC: XX.XX.XX.XX
MCU:XX.XX
If current model does not match you set use down arrow key on the remote to change
OK
Password Change
a) Press “SETUP“ button on R/C,TV will show setup menu
b) Select the menu using the Dn and Right on R/C
c) Go preference page select “password“ to change
* 000000 is default password supplied.
Check the Software Version
a) Open the CD Door
b) Press “INFO“button on R/C
c) TV will show the version on screen.
Trade model
a) Press “Open/Close “ button on R/C
b) Press “2” “5” “9” on R/C,VFD will display “TRA ON “ or “TRA OFF”
Upgrading new software
a) Copy “software files” into a CD-R
b) Open the CD Door,then insert the CD-R program disc
c) Close the CD Door
d) VFD will show:
 “Loading“
“Erase” -- erase the " Flash memory “Writing” about 1 minute
“done “

* the system will switch off and on again automatically.
e) OSD will show:
Upgrade File detected
Do you wish to continue with the software upgrade?
             OK       Cancel
f) Select “OK”, OSD will show
Upgrade in progress...
V327X

Do not unplug or switch off the device.

Saturday, 21 January 2017

How to update program DM5620K (DM5620K, DMS5620V/W) KARAOKE DVD Mini Hi-Fi System

How to display the EEPROM information, how to update micon program, how to update DVD program LG DM5620K
SERVICE INFORMATION FOR EEPROM
* POWER ON
(DVD or USB MODE)
TV Display "NO DISC" status
* Press Set Remote control ‘SETUP -> > -> > ’ Key > Select "16:9
* DVD Setup > Display 16:9 mode
* Press Set Remote control ‘1 > 3 > 9 > 7 > 1 > 3 > 9 > Enter’ Key
TV Display ‘INFORMATION FOR EEPROM’
* Press ‘POWER’ key

Completed.
HOW TO UPDATE THE MICOM PROGRAM
(1) Change the file name to download as “(MODEL NAME)_(Year)_(Month)_(Date).HEX”.
Ex) DM5620_1101190.HEX
(2) Copy the file to the root folder of USB storage.
(3) Put the USB into the set.
Change set function to USB function.
Then the upgrade process will be started with the upgrade information.
TV Display "UPDATING".
(4) If the upgrade process is complete, the set will be rebooted with “COMPLETED” message and set auto power off.
(5) Pull out the USB storage. Press the power key.
HOW TO UPDATE DVD(ESS) PROGRAM
(1) Change the file name to download as “(MODEL NAME)_(Version)_(Year)_(Month)_(Date).rom”.
Ex) LG_DM5620LD1_1101140.rom
(2) Copy the file to the root folder of USB storage.
(3) Put the USB into the set.
Change set function to USB function.
Then the upgrade process will be started with the upgrade information.
TV display "UPDATING".
(4) If the upgrade process is complete,
the set will be rebooted with “COMPLETED” message and set manual power off.
(5) Pull out the USB storage. Press the power key.

Tuesday, 17 January 2017

How to upgrade the software (Firmware) - Xoceco LCD TV

In most cases, a software update might be necessary for most of the TV TV sets. Picture distortion, picture freezing, audio distortion, improper tuning and so many problems can be rectified by upgrading with the latest software available to that brand TV.  Given here is the firmware upgrade procedure of Xoceco LCD TVs.  The procedure is similar to Dynex LCD TVs too.  Both  these brands are Chinese.
Software Update
This series’ TV chassis provides two software upgrade ports, one is SERVICE PORT, the other is RS232 jack. To use SERVICE PORT, only a USB device is required and the speed is faster, so it is recommended to use the SERVICE PORT. To use RS232 jack, the speed is slower, and more devices are required such as a PC, a set of fixture for upgrade and upgrade software. It is recommended that only SERVICE PORT fails in upgrade, then use RS232 jack.
Making use of SERVICE PORT for upgrade
Copy file with extension name of BIN (*.BIN) for upgrade to the USB device, save it at root catalog. To upgrade different TV model, the adopted files are different. It is required to correctly name the *.BIN files, and below table lists the TV models and file names for your reference.
Method 1
1. Disconnect the AC power, insert USB device into the SERVICE PORT.
2. Reconnect the power, the TV will automatically upgrade the software. It will take some minutes.  During the process, the power indicator will flicker in red and blue. After completion, the TV will auto power on and the power indicator lights blue. If the process takes more than 5 minutes, that means the upgrade fails. Please check the BIN format file and USB device again.
3
When upgrade completed, remove the USB device, disconnect the AC power and then reconnect the power. The SERVICE PORT upgrade is finished completely.
Method 2
1. Connect the power. Insert the USB device into the SERVICE PORT.
2. Enter into Factory menu, access SW Upgrade option. The TV will automatically scan the USB device and files in BIN format. If USB device is normal and BIN file is correct, the TV will upgrade by itself. If fails, then check BIN file and USB device again.
3. When upgrade completed, remove the USB device, disconnect the AC power and then reconnect the power. The SERVICE PORT upgrade is finished completely.

Making use of RS232 for upgrade
A PC and the upgrade fixture designed for this KS  chassis are required. Use Mstar on-line writing tool – Mstar ISP Utility, the needed time is longer.

1. Power on the TV, connect the upgrade fixture correctly, open the upgrade software, click “Connect” icon. If the connection fails, Click “Config” icon . Adjust “ I2C Speed Setting” option, lower the setting of “Speed”. Then click “Connect” icon again.
Wait until right connection information appears.
Click “OK” , then click “Device”

Mark “WP Pin pull to high during ISP” option.
Mark “New Setting Below” option.
Mark Bit7,
Bit5,Bit4, Bit3, Bit2 from “Status Register” option. That is, the value of “Register Setting Value” should be “BC”.
4. Click “Read” icon, download upgrade software which is shown below.
Mark “WP Pin pull to high during ISP” option.
Mark “New Setting Below” option.
Mark Bit7, Bit5, Bit4, Bit3, Bit2 from “Status Register” option. That is, the value of “Register Setting Value” should be “BC”.
4. Click “Read” icon, download upgrade software
5. Click “Auto” .
Mark “Erase Device” option, select “File Area”.
Mark “Blank”, “Program”, “Verify”, “Exit ISP” options.
Click “Run” button, on the right will appear information of upgrade hints. When “Pass” appears, that means the upgrade is successful.
6. After completion, disconnect the power then reconnect it. The upgrade is finished now.

Working Principle of LCD TV - Xoceco Dynex DX-32L150A11

How does an LCD TV works.  Given description is with reference to Dynex 42 inch LCD TV  
The analog and digital RF signal received by antenna will be sent to integrative tuner TUNER2(DA58GT-13-E, contains HF and IF amplifier circuits), which selects appropriate channel and sends the selected IF signal to the next level by the control of SDA, SCL.  The analog RF signal sent to tuner, via high amplify and mixed frequency to get IF signal VIF, then it will be divided into two ways, one way will be sent to acoustic surface-wave ZF3 to IF filter and get better IF characteristics, then it will be sent to NF1(M61111FP) through pin20, 21 to do intermediate amplification, phase-locked loop VCO and synchronous wave detection and output VIDEO-TV(ATV) from pin1; another way will be sent to acoustic surface-wave ZF4 to IF filter and gent better IF characteristics, then it will be sent to NF1(M61111FP) to do intermediate amplification and wave detection and output SIF from pin10.
The digital RF via high amplify and mixed frequency in the tuner, output deferential digital IF signal from pin10、 11, the signal will be sent to the main IC S01(MSD319EL) to do intermediate amplification and demodulation, then demodulate the transform stream TS which contains video/audio and other information.
ATV, SIF, TS, audio/video signal of AV, S-VIDEO, VGA and HDMI. Component video signal selected by switch NB09(PI5V330W) from Component 1 and Component 2, Then one of video signal selected by switch NB10(PI5V330W) from Component and VGA . AV, S-VIDEO ,Component audio signal selected by switch NB11 HEF4052BT), HDMI audio/video signal selected by internal switch from HDMI1, HDMI2, HDMI3; all of the signals will be sent to the main IC NS01(MSD319EL) switch select, video decode and process.
In MSD319EL,TS of DTV via TS demultiplex, distinguish the different programs and pick-up the corresponding audio/video stream and data stream, after MPEG-2 uncompress, video coder and audio D/A transform, recover the analog video signal YCbCr and audio signal L/R.
ATV output from M61111FP will be sent to MSD319EL video switch, A/D convert and digital decode. The video selected by switch embed in MSD319EL will be sent out in two ways: one is sent to decode and process; the other is Video OUT.  All of the video data (include DTV video) via switch select, video decode and process will be sent to MSD319EL to do D/A transition, image scale, OSD superposition, then LVDS conversion to signal acceptable for LCD panel, namely four pairs of low differential signal and one pair of clock signal, then it will be sent to LCD panel for picture display.
All of the audio signals will be sent to MSD319EL to do audio switch selection and sound effect processing, then output L/R to sound amplifier NV03 (R2S15112FP) amplifying to speaker. The audio L/R also sends to Audio OUT.
The unit is control by the MCU built in MSD319EL, it connects TUNER and E2PROM through IIC bus line and controls the whole unit working.

Thursday, 12 January 2017

Horizon treadmill – Horizon Quantum – Error code troubleshooting

How to troubleshoot Horizon Fitness treadmill

Error-message "E1" on console
E1: motor doesn’t work
Cause:
1. Motor hesitates to move.
2. Console cable has not been connected well or is damaged.
3. Sensor cable has not been connected well or is damaged.
4. Magnet of the front roller has fallen down.
5. Damaged PCB
6. Damaged MCB
7. Sensor is out of alignment
Solution
1. Adjust the “SPD” button on MCB until the motor start.
2. Check the console control cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
3. Check the Sensor cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
4. Check the magnet of front roller has been fallen down or not.
If it has fallen down, re-install it.
5. Replace the PCB.
6. Replace the MCB.
6. Re-install the sensor.
Error-message "E2" on console
E2: max velocity is too low
Cause:
1. Console cable has not been connected well or is damaged.
2. Sensor cable has not been connected well or is damaged.
3. Magnet of the front roller has fallen down.
4. Damaged PCB
5. Damaged MCB
6. Sensor is out of alignment
7. City power is too low.
Solution
1. Check the console control cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
2. Check the Sensor cable has been connected well or not.
If it has not been connected well, connect it or change the cable.
3. Check the magnet of front roller has been fallen down or not.
If it has fallen down, re-install it.
4. Replace the PCB.
5. Replace the MCB.
6. Re-install the sensor.
7. Check the power voltage by using voltage-meter to see if it is within 120V+-15% or 230V+-15%.
If the power voltage isn't within the range, look for a qualified electrician for help
Treadmill will not start
Causes:
1. Max SPD button has not been adjusted properly.
2. Console cable or PCB is damaged.
3. MCB is damaged.
4. Transformer (7-pin) is damaged.
5. Motor is damaged.
Solution
Open motor cover, verify wire connection M+ and M- (motor wire) and transformer (7-pin) on the MCB then plug in the power cord and turn on the power switch. Then press “POWER, START, FAST“ buttons.
1. Adjust the “SPD” until the motor start to run.
2. Verify the LED indicator of LED4 is lit. If that LED4 is not lit, replace console cable or PCB.
3. Replace MCB
4. Replace transformer (7-pin).
5. Replace Motor.

No display
Causes:1. Breaker is damaged.
2. ON/OFF switch is damaged.
3. Transformer (2pin&3pin) is damaged.
4. MCB is damaged.
5. Console cable is damaged.
6. PCB is damaged
Solution 1. Verify if LED
115vAC(AC) is lit. If this LED is lit, YES: Next step
NO: Verify the following
Inspect the circuit breaker to see if it has tripped off.
2. The switch is turned to the "ON" position.
Verify wire connection AC1 & AC2 on the MCB.
Verify the ON/OFF switch, breaker & socket wires are connected.
3. Transformer is damaged, replace it with a new one.
4. MCB is damaged, replace MCB.
Verify if fuse is broken. If it is, replace fuse.
5. Replace console cable.
Verify if the 5th pin (yellow) and 8th pin (white) of console cable is more than 10 voltage.
6. Replace PCB.
Some of the keys on console will not work
Causes:1. Keypad connecting plug is not fit-in properly.
2. Keypad is damaged.
3. PCB is damaged.
Solution1. Disconnect the keypad and replace the keypad, and check again.
2. Replace the keypad.
3. Replace the PCB.
Heart-Rate-Control function does not work
Causes:
1. Hand pulse sensor set is damaged.
2. Heart-rate-control board is damaged.
3. PCB is damaged
Solution1. Replace hand pulse sensor set with a new one.
2. Replace the heart-rate-control board with a new one.
3. PCB is damaged. Replace the PCB.
Treadmill stop by itself
Cause:
1. Poor interconnection.
2. ESD.
3. PCB (especially true when stop in the scanning mode).
4. Low magnetism of the safety switch.
5. Bad motor
Solution
1. Verify the interconnection between wires.
2. Advise JMI.
3. Replace the PCB.
4. Replace the safety switch.
5. Replace the motor
Speed is not stable
Causes:
1. AC power voltage is too low.
2. Tension of drive belt or running belt is too loose. Poor adjustment of MCB.
3. MCB is damaged.
4. Motor is damaged.
5. Poor lubrication between the deck and the belt
Solution
1.Check the power voltage by using voltage-meter to see if it is within 120V+-15% or 230V+-15%.
If the power voltage isn't within the range, look for a qualified electrician for help.
2.Open the motor cover, if the belt has stretched and is slipping across the rollers when running.
Adjust the belt tension.
3.Remove the motor cover and run the machine at low speed, then adjust the IR COMP and MAX
SPD on MCB.
If it hasn't been improved, replace new MCB.
4.Replace new motor.
5.Relubrication.
Incline up or down by itself
Causes:
1. The console cable is damaged.
2. MCB is damaged.
3. PCB is damaged.
4. Incline motor is damaged
Solution
1. Use a new console cable to connect PCB to MCB. Then turn power on, press "UP" and "DOWN" key to see if the incline motor will be OK. (If the treadmill still works by itself go to next step)
2. MCB is damaged.
2.1 Check if relay parts (REL1, REL2) failed with a multimeter to measure the resistance of REL1 and REL2.
Replace REL1 & REL2 if either failed.
2.2 Replace MCB.
3. OR: Replace PCB.
OR: Replace incline motor.
Noises under motor cover
Causes:
1. The running belt tension is adjusted too tight.
2. The bearing of front roller is
not installed correctly.
3. Dirty grooves of drive belt.
4. The motor is damaged.
Solution
1. Adjust the belt tension so that the belt does not start slipping and then check if the noise has disappeared.
Let the treadmill run, without using it, for at least 5 days because sometimes the bearing will settle and become quiet then check if the noise has disappeared.
2.Replace the front roller with a new one to see if the noise disappear.
3.Remove drive-belt and check the grooves in belt for dirt or dust and clean if necessary. Clean also the motor pulley and the roller pulley groove and check if the noise has disappeared.
4.The motor bearing is damaged.
Replace the motor.