Table of Contents
Advertisement
1) V
(SHELF voltage) : X-electrode sustain voltage when recording DATA
SHELF
TP : RCU25
Adjustment control : RU5
Standard voltage : +60V
2) V
(SCAN VH voltage) : VH voltage of SCAN IC when scanning
VH
TP : RY7 voltage each side
Adjustment control : RY6
Standard voltage : -70V
(3) The final operation adjustment
1) Input a monochrome pattern of R,G,B. And then you check if there are abnormal OFF-state
pixels (which must be in ON-state but are in OFF-state).
If any, increase V
pattern.
2) If there is no abnormal OFF-state pixel in monochrome pattern of R,G,B, make sure if there is
abnormal OFF-state in Magenta, Cyan, Yellow or not. If any, increase V
pattern.
3) Increase V
, which is set as above, by 1V.
SUS
4) Make sure if there are abnormal ON-state pixels(which must be on OFF-state but are in ON-
state, for example, R or G) in Blue pattern after aging Blue pattern 5 minutes. If any, set V
slowly from - 160V to - 150V and decrease V
discharge.
4-4. White balance adjustment
(1) Feed grey scale signal to video input terminal.
(2) Confirm the original data of user control (See 4-1).
(3) Press Remote controller in order starting with UP => MUTE => RECALL => MUTE BUTTON
to access Service adjustment
the Service mode PW364 register. (See 4-1).
(4) Make sure you can't recognize any grey scale errors in the form of colour tint in this darker bands.
(5) You attach the sensor of a White balance meter to the white part on the upper end of this grey
scale pattern.
(6) Set White balance changing R,G,B-Gain.
• You make sure that R,G,B-Gain must be set within the limit of 63 20. If it is over the limit, it
is N.G.
• How to adjust temperature of colour
X = 0.290
0.01, Y = 0.310 0.01
Temperature of colour : 8,300
(7) You can set Luminance level changing Sub-contrast.
• If the set data of Sub-contrast is over the limit of 80, it is N.G.
(8) Press Menu button, to escape from Service mode.
voltage slowly from 166V to remove abnormal OFF state pixels in that
SUS
mode and select PW364. And then confirm the original data of
o
K
slowly to remove wrong electronic
SHELF
- 8 -
Service manual SP-110
slowly in that
SUS
SCAN
Advertisement
Table of Contents
