Rolsen 21C19/PF21C19, Service Manual

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SERVICE MANUAL
8
S
VS 0-3F 25
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4.3 Receive a normal TV signal. Rotate knob of the FCB until you get a sharp picture.
5. Safety Inspection
5.1 Inspection for insulation and voltage-resistant
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
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
Item Bus Data Description Remarks
5PAR/6PAR 1F Parallelogram correction (for large-screen only)
5BOW/6BOW 1F Curve correction (for large-screen only)
5HSH/6HSH Set to the optimal
mode
Horizontal center in the TV mode for 50Hz/60Hz
For 50Hz, “ 5HSH ” is displayed ； for 60Hz, “ 6HSH ” is
displayed.
*
5HSR/6HSR Set to the optimal
mode
Horizontal center in the RGB mode for 50Hz/60Hz
For 50Hz,
“
5HSR
”
is displayed
；
for 60Hz,
“
6HSR
”
is
displayed.
*
5EWP/6EWP 1F East-West parabola correction (for large-screen only)
5EWW/6EWW 1F East-West correction (for large-screen only)
5UCR/6UCR 1F Upper corner parabola correction (for large-screen only)
5LCR/6LCR 1F Lower corner parabola correction (for large-screen only)
5EWT/6EWT 1F Trapezoidal correction (for large-screen only)
(continued)