Toshiba 32W300P – Service mode – initialization – SMPS circuit diagram – electrical adjustments
32W300p - Toshiba
LCD TV - how to enter service mode - How to initialize - electrical
adjustments - EEPROM IC replacement and data setting - SMPS, Audio, LVDS
circuit diagram.
This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit or on the main unit and on the remote control for more than a standard time in the appropriate condition.
In case of the main unit and remote control, press the remote control buttons first, and then press the main unit buttons.
WHEN
REPLACING EEPROM (MEMORY) IC, CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS
AND MICON VERSION
Initial
total of MEMORY IC, POWER ON total hours and MICON VERSION can be checked on
the screen. Total hours are displayed in 16 system of notation.
If you
set a factory initialization, the total hours is reset to "0".
Refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
Refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
Turn
on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (2) on the remote control for more than 2 seconds.
After the confirmation of each check sum, POWER ON total hours and MICON VERSION, turn off the power.
The
each item value might be different according to each set.Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (2) on the remote control for more than 2 seconds.
After the confirmation of each check sum, POWER ON total hours and MICON VERSION, turn off the power.
SMPS and PWB power schematic
LVDS
Audio
CONFIRMATION OF INITIAL DATA
If a
service repair is undertaken where it has been required to change the
MEMORY IC, the following steps should be taken to ensure correct data
settings while making reference to INITIAL SETTING TABLE.
Turn on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG.
ADDRESS is now selected and should "blink". Using the CH. UP/DOWN buton on the remote, step through the
ADDRESS until required ADDRESS to be changed is reached.
Press LEFT/RIGHT button to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using CH. UP/DOWN button until required DATA value has been selected.
Pressing LEFT/RIGHT button will take you back to ADDRESS for further selection if necessary.
Repeat steps 4 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After
the data input, set to the initializing of shipping.
Turn on the POWER.
Set the VOLUME to minimum.
Turn on the POWER.
Set the VOLUME to minimum.
Press
both VOL. DOWN button on the set and Channel button (1) on the remote control
for more than 2 seconds.
After the finishing of the initializing of shipping, the unit will turn off automatically. [The unit will now have the correct DATA for the new MEMORY IC.]
After the finishing of the initializing of shipping, the unit will turn off automatically. [The unit will now have the correct DATA for the new MEMORY IC.]
ELECTRICAL ADJUSTMENTS
perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies.
Use an isolation transformer when performing any service on this chassis.
When
removing a PCB or related component, after unfastening or changing a
wire, be sure to put the wire back in its original position.
When
you exchange IC and Transistor with a heat sink, apply silicon grease on
the contact section of the heat sink. Before applying new silicon
grease, remove all the old silicon grease. (Old grease may cause damage
to the IC and Transistor)
Fixed
values of each the adjustment item
BASIC ADJUSTMENTS
On-Screen Display Adjustment
Set the VOLUME to minimum.
Press
the VOL. DOWN button on the set and the channel button (9) on the remote
control for more than 2 seconds to display adjustment mode on the
screen.
Use the UP/DOWN button or Channel button (0-9) on the remote control to select the options.
Press the MENU button on the remote control to end the adjustments.
To display the adjustment screen for TV, AV, COMPONENT and HDMI mode, press the INPUT SELECT button on the remote control.
