akira CT-21CDP5CP, Service Manual

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Model no.: .CT-21CDP5CP.doc
version 1.0
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5. Safety Inspection
Measure resistance between naked metal of the TV and feed end of the power cord to be
infinity with a DC-500 high resistance meter and insulation resistance between the naked metal
and degaussing coil to be over 20M
Ω .
6. DESIGN/SERVICE mode
6.1 To enter the USER SERVICE mode
Caution: The user service mode adjustment can be changed only when service personnel
adjust the whole set data during servicing. As the control data have dramatic effects on
functions and performance of the TV, service personnel should not tell user how to enter the
SERVICE mode to avoid improper data settings.
6.1.1 Set the volume to 0. Then press and hold the MUTE button on the remote control, and
press the MENU button on the TV to enter the SERVICE mode. (In this case, the S mode
cannot be stored in the EEPROM. To exit from the S mode, turn off the TV set. )
6.1.2 After entering the S mode, Red “S”is displayed on the upper center of the screen and
MENU1 is default. Use the POS+/- buttons to highlight an adjustment and the VOL+/- buttons to
adjust it. The adjusted data are immediately output and stored in the EEPROM
6.2 Bus data in the S mode
Perform safety test for all naked metal of the TV. Supply high voltage of 3000V AC, 50Hz
(limit current of 10mA) between all naked metal and cold ground. Test every point for 3 min. and
ensure no arcing and sparking.
5.2 Requirements for insulation resistance
5.1 Inspection for insulation and voltage-resistant