SANYO LCD-32XL2 SERVICE MODE MEMORY INITIALIZATION AND POWER SUPPLY CIRCUIT
SANYO LCD-32XL2
SERVICE MODE MEMORY INITIALIZATION AND POWER SUPPLY CIRCUIT
OPTION SETTING
After replacing Memory IC (IC801)
The memory IC (IC802) stores the option data of TV set and service adjustments data for each circuit, therefore, when the memory IC is replaced, it should be programmed USING “ Service Adjustment”
How to enter the Option Setting Mode
Press and hold the MUTE button on the remote control and press the CHANNEL DOWN (P DOWN) button on the front control panel of the TV. The option window will appear on the screen.
The memory IC (IC802) stores the option data of TV set and service adjustments data for each circuit, therefore, when the memory IC is replaced, it should be programmed USING “ Service Adjustment”
How to enter the Option Setting Mode
Press and hold the MUTE button on the remote control and press the CHANNEL DOWN (P DOWN) button on the front control panel of the TV. The option window will appear on the screen.
How to make the Option Setting
Select desired option item by pressing the CHANNEL UP or DOWN button.
To switch the option mode, use the VOLUME + or - button.
The data which is set in the option mode is stored into the memory IC automatically.
The following table shows the available option items and default setting mode.
Select desired option item by pressing the CHANNEL UP or DOWN button.
To switch the option mode, use the VOLUME + or - button.
The data which is set in the option mode is stored into the memory IC automatically.
The following table shows the available option items and default setting mode.
Option
Items
|
Mode
|
Default
/ Description
|
ON
Timer
|
ON or
OFF
|
Default
“OFF” / Disable or enable ON Timer function.
|
Plug
& Play
|
ON or
OFF
|
Default
“ON” / Disable or enable Plug & Play function.
|
Welcome
Text
|
ON or
OFF
|
Default
“ON” / Display message when first set up.
|
BBE
|
ON or
OFF
|
Default
“ON” / Disable or enable BBE function on Sound menu.
|
Auto
Volume
|
ON or
OFF
|
Default
“ON” / Disable or enable “Auto Volume Level” function on Sound menu.
|
Bass
Expander
|
ON or
OFF
|
Default
“ON” / Disable or enable Bass Expander on Sound menu.
|
16:9
Mode
|
ON or
OFF
|
Default
“ON” / 16:9 mode.
|
Noise
Reduction
|
ON or
OFF
|
Default
“ON” / Disable or enable Noise Reduction function on Setting menu.
|
Country
|
UK.
UK&IRE or EU
|
Default
“EU” / Selection of TV system.
|
Raster
Rotation
|
ON or
OFF
|
Default
“OFF” / Disable or enable Raster Rotation function.
|
SESA
|
ON or
OFF
|
Default
“OFF”.
|
Digital
RC
|
ON or
OFF
|
Default
“OFF” / Disable or enable use of Digital RC hand-set.
|
Light
Monitoring
|
ON or
OFF
|
Default
“OFF” / Disable or enable Light Monitoring function.
|
Video
Mute
|
ON or
OFF
|
Default
“OFF” / Disable or enable Video Mute function.
|
Exit from the Option Mode
Press the MENU button or turn off the TV set by pressing the Power ON/OFF button.
Press the MENU button or turn off the TV set by pressing the Power ON/OFF button.
Service Menu System
How to enter the Service Menu
Press and hold the SOUND button of the remote control and press the CHANNEL DOWN (P DOWN ) button on the front control panel of the TV, and the Main menu of service mode will be displayed.
Press and hold the SOUND button of the remote control and press the CHANNEL DOWN (P DOWN ) button on the front control panel of the TV, and the Main menu of service mode will be displayed.
How to select the service section
and service item and change data value:
To select Service Section: Press the Cursor UP or DOWN button on the remote control hand set, and press the VOLUME + button to enter the Sub menu.
To change data value
To select Service Section: Press the Cursor UP or DOWN button on the remote control hand set, and press the VOLUME + button to enter the Sub menu.
To change data value
Select service item by pressing the Cursor UP
or DOWN and change data value by
pressing the VOLUME + or - button. (To return to the Main menu, press the MENU button.)
Exit from the Service Menu
Press the MENU button repeatedly or turn off the TV set by pressing the Power ON/OFF button.
Press the MENU button repeatedly or turn off the TV set by pressing the Power ON/OFF button.
Initialization of Memory IC (IC802)
How to Initialise the Memory IC
To initialise the Memory IC (IC802), press and hold the IMAGE button on the remote control, then press the CHANNEL DOWN button on the front panel of the TV set and then turn the Mains switch off and on. The initialisation is now completed.
To initialise the Memory IC (IC802), press and hold the IMAGE button on the remote control, then press the CHANNEL DOWN button on the front panel of the TV set and then turn the Mains switch off and on. The initialisation is now completed.
Protection Circuit
This TV set has a built-in power supply
protection circuit. It is provided to protect the TV set in case of a power supply
circuit malfunctions. When something abnormality occurs during TV reception,
the TV set goes to the stand-by mode.
When operating the Protection Circuit, the Stand-by and Power Indicator will blink.
When operating the Protection Circuit, the Stand-by and Power Indicator will blink.
Releasing the protective circuit and
restoring power supply
To release the protective circuit and restore power supply, disconnect the AC cord for a short time. This will work only if the power supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot be restored and the circuit will have to be repaired.
To release the protective circuit and restore power supply, disconnect the AC cord for a short time. This will work only if the power supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot be restored and the circuit will have to be repaired.
Service Adjustments
AGC Adjustment
1. Receive PAL-N colour bar pattern.
(ANT Input Level: 62dBuV 75 ohms terminated)
1. Receive PAL-N colour bar pattern.
(ANT Input Level: 62dBuV 75 ohms terminated)
2. Connect a Digital Volt Meter to Tuner-AGC terminal (TP-A) and
the ground.
3. Enter the Service Mode, and select item TDA9885 with UP or DOWN key.
4. Select item Write 1 of TDA9885 with UP or DOWN key.
5. Adjust voltage of Tuner-AGC to become 3.2V±0.3V DC with VOLUME + or - key.
3. Enter the Service Mode, and select item TDA9885 with UP or DOWN key.
4. Select item Write 1 of TDA9885 with UP or DOWN key.
5. Adjust voltage of Tuner-AGC to become 3.2V±0.3V DC with VOLUME + or - key.
Black Balance Adjustment
Setting
1. Connect a color-bar generator to the external (composite) video input terminal (AV1 or AV3 terminal), and input a dark gray pattern (10% white).
2. Set the television to following conditions:
Picture Mode: Dynamic
Pre-heating Time: More than 10 minutes
Black Balance Adjustment
1. Enter the Service Mode, and select item “Other” with UP or DOWN key, then press the VOLUME + or - key to enter the Sub menu.
Adjustment Item:
No. 58 Black Balance R
No. 59 Black Balance G
No. 60 Black Balance B
2. Set 58 Black BalR, 59 Black BalG and 60 Black BalB value to “255” with VOLUME + or – key
Setting
1. Connect a color-bar generator to the external (composite) video input terminal (AV1 or AV3 terminal), and input a dark gray pattern (10% white).
2. Set the television to following conditions:
Picture Mode: Dynamic
Pre-heating Time: More than 10 minutes
Black Balance Adjustment
1. Enter the Service Mode, and select item “Other” with UP or DOWN key, then press the VOLUME + or - key to enter the Sub menu.
Adjustment Item:
No. 58 Black Balance R
No. 59 Black Balance G
No. 60 Black Balance B
2. Set 58 Black BalR, 59 Black BalG and 60 Black BalB value to “255” with VOLUME + or – key
3. Decide one item in three items to a fixed value (Example, let 58
Black BalR be fixed value), select item of other 2 colors (Example, 59
Black BalG or 60 Black BalB) with UP or DOWN key, and adjust to produce a normal black and white picture in dark gray areas
with VOLUME + or - key.
(Note: At this time, Adjust the other 2 colors data less than fixed data.) After adjustment, confirm white balance again by normal picture.
(Note: At this time, Adjust the other 2 colors data less than fixed data.) After adjustment, confirm white balance again by normal picture.
White Balance Adjustment
Setting
1. Connect a color-bar generator to the external (composite) video input terminal (AV1 or AV3), and input a White Pattern (90%).
2. Set the television to following conditions:
Picture Mode: Dynamic
Pre-heating Time: More than 10 minutes
White Balance Adjustment
1. Enter the Service Mode, and select item “Other” with UP or DOWN key, then press the VOLUME + or – key to enter the Sub menu.
Adjustment Item:
No. 55 White Balance R
No. 56 White Balance G
No. 57 White Balance B
2. Set 55 White BalR, 56 White BalG and 57 White BalB value to “32” with VOLUME + or – key
Setting
1. Connect a color-bar generator to the external (composite) video input terminal (AV1 or AV3), and input a White Pattern (90%).
2. Set the television to following conditions:
Picture Mode: Dynamic
Pre-heating Time: More than 10 minutes
White Balance Adjustment
1. Enter the Service Mode, and select item “Other” with UP or DOWN key, then press the VOLUME + or – key to enter the Sub menu.
Adjustment Item:
No. 55 White Balance R
No. 56 White Balance G
No. 57 White Balance B
2. Set 55 White BalR, 56 White BalG and 57 White BalB value to “32” with VOLUME + or – key
3. Decide one item in three items to a fixed value (Example, let 55
White BalR be fixed value), select item of other 2 colors (Example, 56
White BalG or 57 White BalB) with UP or DOWN key, and adjust
to produce a normal black and white picture in highlight
areas with VOLUME + or - key.
(Note: At this time, Adjust the other 2 colors data less than fixed data.) After adjustment, confirm white balance again by normal picture.
(Note: At this time, Adjust the other 2 colors data less than fixed data.) After adjustment, confirm white balance again by normal picture.
MTS Adjustment
Input Level Adjustment
Setting
1. Connect a Digital Volt Meter to Pin-1 of K36P3 on the MTS unit and the ground.
2. Receive the channel with audio 1KHz 100% modulation signal.
3. Set the television to following conditions:
Audio Mode: Stereo
Surround and BBE: OFF
Adjustment
1. Enter the Service Mode, and select item “CXA2104” with UP or DOWN key, then press the VOLUME + or – key to enter the Sub menu.
2. Select item Write 0 of CXA2104 with UP or DOWN key.
3. Adjust voltage to become DC 400mVrms±30% by pressing the VOLUME + or - key.
Setting
1. Connect a Digital Volt Meter to Pin-1 of K36P3 on the MTS unit and the ground.
2. Receive the channel with audio 1KHz 100% modulation signal.
3. Set the television to following conditions:
Audio Mode: Stereo
Surround and BBE: OFF
Adjustment
1. Enter the Service Mode, and select item “CXA2104” with UP or DOWN key, then press the VOLUME + or – key to enter the Sub menu.
2. Select item Write 0 of CXA2104 with UP or DOWN key.
3. Adjust voltage to become DC 400mVrms±30% by pressing the VOLUME + or - key.
Stereo Separation Adjustment
Setting
1. Connect an oscilloscope:
Probe-A to Pin-1 of K36P3 and the ground.
Probe-B to Pin-3 of K36P3 and the ground.
2. Receive a MTS channel.
3. Set the television to following conditions:
Audio Mode: Stereo
Surround and BBE: OFF
Adjustment
1. Enter the Service Mode, and select item “CXA2104” with UP or DOWN key, then press the VOLUME + or – key to enter the Sub menu.
2. Select item Write 2 (Low Separation Adjustment) of CXA2104 with UP or DOWN key.
Setting
1. Connect an oscilloscope:
Probe-A to Pin-1 of K36P3 and the ground.
Probe-B to Pin-3 of K36P3 and the ground.
2. Receive a MTS channel.
3. Set the television to following conditions:
Audio Mode: Stereo
Surround and BBE: OFF
Adjustment
1. Enter the Service Mode, and select item “CXA2104” with UP or DOWN key, then press the VOLUME + or – key to enter the Sub menu.
2. Select item Write 2 (Low Separation Adjustment) of CXA2104 with UP or DOWN key.
3. Adjust the level of 300Hz at Pin-1 of K36P3 to become minimum
level by pressing the VOLUME + or - key.
4. Select item Write 1 (High Separation Adjustment) of CXA2104
with UP or DOWN key.
5. Adjust the level of 4KHz at Pin-3 of K36P3 to become minimum
level by pressing the VOLUME + or - key.
6. Repeat steps 2 to 5 for best separation
POWER SUPPLY CIRCUIT
