Sharp 55R-WP4H, Service Manual

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61R-WP5H
55R-WP5H
No. AdjustingPoint Adjusting Conditions Adjusting Procedure
9 Brightness adjust-
ment
(R/C, Service
mode V10) Signal: Good local channel
Adjusting point:
Remote Control
(Service mode V10)
Specification:
Normal brightness
level
1. Make this adjustment after the deflection, white
balance, normal mask, purity, convergence and
focus have all been completely adjusted.
2. Set to the video standard condition.
(Picture at MAX, brightness and sharpness at
CENTER)
3. Set the VIEW MODE to STRETCH.
4. Receive the good local channel.
5. Enter the Service mode V10. Adjust the brightness
to the best point.
6. Switch to the 1080I mode. Make the same adjust-
ment.
Caution:
Avoid CRT damage by too high bright settings.
10 Picture adjustment
(R/C, Service
mode V07) Signal: Good local channel
Adjusting point:
Remote Control
(Service mode V07)
Specification:
Normal contrast range
1. Make this adjustment after the Y signal level has
been completely adjusted.
2. Take the same steps 1., 2., 3. and 4. for the bright-
ness adjustment.
3. Enter the Service mode V07. Adjust the picture to
the best point.
Caution:
Avoid CRT damage and picture blooming by too
high settings.
11 Sub-screen Pic-
ture adjustment
(R/C, Service
mode V119) Signal: NTSC standard half
color bar signal
Adjusting point:
Remote Control
(Service mode V119)
Measuring point: TP1802
Specification: 0.5±0.05 Vp-p
1. In the twin-picture mode. Receive the NTSC stand-
ard half color bar signal for the right-side screen.
2. Connect the oscilloscope to TP1802. Enter the
Service mode V119. Using the VOLUME UP/
DOWN keys, adjust the amplitude between the
black level and white peak to 0.5±0.05 Vp-p.
12 Sub-screen tint
adjustment (R/C,
Service mode
V118) Signal: NTSC standard half
color bar signal
Adjusting point:
Remote Control
(Service mode V118)
Specification:
Normal flesh tone
TP1801
1. In the twin-picture mode, receive the good local
channel for the right-side screen (sub-screen).
2. Enter the Service mode V118. Using the VOLUME
UP/DOWN keys, visually adjust the tint on the right-
side screen to that on the left-side screen.
3. Switch the channels for the right-side screen. Make
sure the tint is optimum on other channels.
13 Sub-screen color
adjustment (R/C,
Service mode
V120) Signal: NTSC standard half
color bar signal
Adjusting point:
Remote Control
(Service mode V120)
Specification:
Normal color level
TP1801
0.7 ±0.05Vp-p
1. In the twin-picture mode, receive the good local
channel for the right-side screen (sub-screen).
2. Enter the Service mode V120. Using the VOLUME
UP/DOWN keys, visually adjust the color on the
right-side screen to that on the left-side screen.
3. Switch the channels for the right-side screen. Make
sure the color is optimum on other channels.