Read Sharp LC-28HM2E (serv.man2) Service Manual online
34
LC-28HM2
AN-28SP2
(6) Data copy
Adjusting point
Adjusting conditions
Adjusting procedure
1
Data copy
1. Operate the adjustment key in the line (P5L13) DATA
COPY. It works all right if “ON” appears first and
then “OFF” appears.
then “OFF” appears.
(7) Monitor side adjustment
Adjusting point
Adjusting conditions
Adjusting procedure
1
Monitor side +B
adjustment
adjustment
1. Connect DC voltmeter to
P2001 of FB2005.
1. Adjust +BADJ MONITOR (center side process
adjustment menu P2L2), so that DC/DC 5V line
output voltage becomes 5.2 ±0.05V.
output voltage becomes 5.2 ±0.05V.
2
Opposed bias
adjustment
adjustment
1. Enter the video 1 mode with
no signal input.
2. Apply the specified jig to the
screen center.
3. Observe the output from
the jig with oscilloscope.
1. Adjust COMMON BIAS (center side process
adjustment menu P2L3), so that the waveform peak-
to-peak is minimized.
to-peak is minimized.
(8) Final adjustment
Adjusting point
Adjusting conditions
Adjusting procedure
1
White balance
adjustment
adjustment
1. Feed monoscope pattern
signal.
1. (Center side process adjustment menu
P6L1 : MONITOR CORRECT ALL
P6L2 : MONITOR CORRECT R
P6L3 : MONITOR CORRECT L
P6L4 : MONITOR CORRECT B)
Finely tune the white balance to optimum.
P6L2 : MONITOR CORRECT R
P6L3 : MONITOR CORRECT L
P6L4 : MONITOR CORRECT B)
Finely tune the white balance to optimum.
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