While pressing [VOLUME ( - )] button of the main unit, press [0] button of the remote control three times within 2 seconds.
SERVICE MODE DISPLAY
KEY COMMAND
[1] button...Main items Selection in forward direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[RED] button...All Sub items Selection in forward direction
[GREEN] button...All Sub items Selection in reverse
direction
[VOL] button...Value of sub items change in forward
direction ( + ), in reverse direction ( - ).
Contents of adjustment mode
- Value is shown as a hexadecimal number.
- Preset value differs depending on models.
- After entering the adjustment mode, take note of the value in each item before starting adjustment.
TO EXIT SERVICE MODE
- Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
SERVICE TOOL MODE
- Select [SRV-TOOL] in Service Mode.
- Press [OK] button on the remote control.
Display of SOS History
- SOS History (Number of LED blinking) indication.
- From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
- This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].
POWER ON TIME/COUNT
- To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
- Time: Cumulative power on time, indicated hour : minute by decimal
- Count: Number of ON times by decimal
- Note: This indication will not be cleared by either of the self-check or any command.
- Disconnect the AC cord from wall outlet or switch off the power with the [POWER] button on the main unit.
HOTEL MODE
- Access command to the Hotel mode setup menu In order to display the Hotel mode setup menu, enter the following command (within 2 second).
- [TV] : Vol. [Down] + [REMOTE] : AV (3 times)
- Then, the Hotel mode setup menu is displayed.
To exit the Hotel mode setup menu
- Disconnect AC power cord from wall outlet or switch off the power with the [POWER] button on the main unit.
MEASUREMENTS & ADJUSTMENTS
Item / Preparation
- Input a white signal to plasma video input.
- Set the picture controls as follows.
- Picture menu:
PNR: OFF
Aspect: 16:9
Caution
- First perform Vsus adjustment.
- Confirmation of Vscn voltage should be performed after confirmation of Vad adjustment. When Vad= -140V, Voltage of Vscn is 8V ±1V.
See the Panel label.
Adjustments
- Adjust driver section voltages referring the panel data on the panel data label.
- Check or adjust the following voltages with the multimeter.
INITIALIZATION PULSE ADJUST
- Input the White signal to plasma video input.
- Set the picture controls as follows.
PNR: OFF
Aspect : 16:9
- Connect Oscilloscope to TPSC1 (SC). Check the voltage (T2) at 100 us period on the down slop.
Quick adjustment after P.C.B. exchange.
- Adjust the following voltages with the multimeter
{Click on images to Enlarge}
See the Panel label.
Caution:
Absolutely do not reduce Vsus below +Ve not to damage the
P.C.B.
ADJUSTMENT VOLUME LOCATION
TEST POINT LOCATION
BOARD NAME AND LOCATION
ADJUSTMENT VOLUME LOCATION
Applicable signals
Troubleshooting.
Use the self-check function to test the unit.
- Checking the IIC bus lines
- Power LED Blinking timing
Check of the IIC bus lines. How to access
Self-check indication only:
- Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
- Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
SCREEN DISPLAY
To Exit
Check Point
Confirm the following parts if NG was displayed.
Disconnect the AC cord from wall outlet or switch off the
power with the [POWER] button on the main unit