Service Manual
Page 2
...AND PICTURE TUBE When servicing the high voltage system, remove the static charge by connecting a 10k ohm resistor in current solid state TV receivers is as a test probe) between the line cord and power receptacle, when servicing this receiver employs integral implosion protection. ...tube does not emit measurable X-Ray radiation, if the high voltage is the picture tube. The important precaution is operating. 4. 20LK31M 20LK61M IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are throughly familiar with all service ...
...AND PICTURE TUBE When servicing the high voltage system, remove the static charge by connecting a 10k ohm resistor in current solid state TV receivers is as a test probe) between the line cord and power receptacle, when servicing this receiver employs integral implosion protection. ...tube does not emit measurable X-Ray radiation, if the high voltage is the picture tube. The important precaution is operating. 4. 20LK31M 20LK61M IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are throughly familiar with all service ...
Service Manual
Page 4
... channel. ( ) Selects next lower channel. REMOTE KEYPAD Accesses any channel from keypad. FLASHBACK Returns to TV mode. 20LK31M 20LK61M LOCATION OF USER'S CONTROL Front Panel 20LK31M LK 20LK61M LK VIDEO/AUDIOIN TERMINALS VIDEO/AUDIOIN TERMINALS POWER Press → On. VOLUME UP/DOWN (+) Increases sound....Press → On. MUTE Press Mutes sound. Press again → Switch to previous channel. MENU Press → Accesses MAIN MENU. TV Infrared Transmitter Window INPUT Press → Switch to external video input mode. CHANNEL UP/DOWN ( ) Selects next higher channel. ( ...
... channel. ( ) Selects next lower channel. REMOTE KEYPAD Accesses any channel from keypad. FLASHBACK Returns to TV mode. 20LK31M 20LK61M LOCATION OF USER'S CONTROL Front Panel 20LK31M LK 20LK61M LK VIDEO/AUDIOIN TERMINALS VIDEO/AUDIOIN TERMINALS POWER Press → On. VOLUME UP/DOWN (+) Increases sound....Press → On. MUTE Press Mutes sound. Press again → Switch to previous channel. MENU Press → Accesses MAIN MENU. TV Infrared Transmitter Window INPUT Press → Switch to external video input mode. CHANNEL UP/DOWN ( ) Selects next higher channel. ( ...
Service Manual
Page 5
... sound. 3. After the voltage test, make sure that the receiver is protected by using a variac transformer for malfunctioning components. 20LK31M 20LK61M Note: INSTALLATION AND SERVICE INSTRUCTIONS (1) When performing any adjustments to ascertain proper operation as follows: 1. The voltage should be checked to...checks should be shut off to verify that the voltmeter reads 21.3 ±1.5V. 5. Apply 120V AC using an external DC supply, TV must be obtained, check circuitry for accurate input voltage. 2. Receive a good local channel. 4. If a correct reading cannot be on ...
... sound. 3. After the voltage test, make sure that the receiver is protected by using a variac transformer for malfunctioning components. 20LK31M 20LK61M Note: INSTALLATION AND SERVICE INSTRUCTIONS (1) When performing any adjustments to ascertain proper operation as follows: 1. The voltage should be checked to...checks should be shut off to verify that the voltmeter reads 21.3 ±1.5V. 5. Apply 120V AC using an external DC supply, TV must be obtained, check circuitry for accurate input voltage. 2. Receive a good local channel. 4. If a correct reading cannot be on ...
Service Manual
Page 6
... on and enters the service mode. To exit the service mode, turn the television off by VOL UP or VOL DOWN. factory used only) 6 20LK31M 20LK61M For adjustments of this series such as focus and master screen voltage. Window 2: DEF D01 D02 D03 D04 D05 D06 RETURN DEF SIGNAL Window 3: SIGNAL... Ch-up buttons at the sametime, plug the AC cord into the service mode, check that customer adjustments are in the normal mode. Now, the TV set is required. In the service mode, you will see the window screen as show in this model, the bus data is converted to adjust...
... on and enters the service mode. To exit the service mode, turn the television off by VOL UP or VOL DOWN. factory used only) 6 20LK31M 20LK61M For adjustments of this series such as focus and master screen voltage. Window 2: DEF D01 D02 D03 D04 D05 D06 RETURN DEF SIGNAL Window 3: SIGNAL... Ch-up buttons at the sametime, plug the AC cord into the service mode, check that customer adjustments are in the normal mode. Now, the TV set is required. In the service mode, you will see the window screen as show in this model, the bus data is converted to adjust...
Service Manual
Page 7
20LK31M 20LK61M Below are the ranges and initial values for each adjustment and in each corresponding values. B SERVICE...will automatically write the above initial values into IC2101. Table - Holding down both the Vol-up /Ch-down buttons on the TV set at service mode for each categories. The adjustment is stored in the service mode for FIX VALUE category. DEF SERVICE ... 00 0F 01 07 SERVICE POSITION F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 ADJUST ITEM OSD CONT SHARPNESS FLT SYS KILLER OP PRE SHOOT CORING DC REST BS START BS GAIN ABL START R/B ANGLE H BLK R H BLK L...
20LK31M 20LK61M Below are the ranges and initial values for each adjustment and in each corresponding values. B SERVICE...will automatically write the above initial values into IC2101. Table - Holding down both the Vol-up /Ch-down buttons on the TV set at service mode for each categories. The adjustment is stored in the service mode for FIX VALUE category. DEF SERVICE ... 00 0F 01 07 SERVICE POSITION F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 ADJUST ITEM OSD CONT SHARPNESS FLT SYS KILLER OP PRE SHOOT CORING DC REST BS START BS GAIN ABL START R/B ANGLE H BLK R H BLK L...
Service Manual
Page 8
Note: You have to exit the service mode first to obtain normal brightness range. Video Level (TV Det Video Level) Adjustment 1. Remove probe and reset the master screen control to select another channel to obtain normal color level. ..."S12" and reset data to confirm that no noise or beat appears. 4. Adjust "S13" data value to turn off the luminance signal (Y-mute). 5. 20LK31M 20LK61M Ë SERVICE ADJUSTMENT RF AGC Adjustment 1. Receive a good local channel. 2. Receive a good local channel. 3. Select the service adjustment "S03" and set the...
Note: You have to exit the service mode first to obtain normal brightness range. Video Level (TV Det Video Level) Adjustment 1. Remove probe and reset the master screen control to select another channel to obtain normal color level. ..."S12" and reset data to confirm that no noise or beat appears. 4. Adjust "S13" data value to turn off the luminance signal (Y-mute). 5. 20LK31M 20LK61M Ë SERVICE ADJUSTMENT RF AGC Adjustment 1. Receive a good local channel. 2. Receive a good local channel. 3. Select the service adjustment "S03" and set the...