Read Sharp XV-Z21000 (serv.man4) Service Manual online
XV-Z20000/XV-Z21000/DT-5000
4 – 1
XV-Z20000
Service Manual
CHAPTER 4.
ELECTRICAL ADJUSTMENT
[1] ELECTRICAL ADJUSTMENT
The unit has been adjusted optimally at the time of factory shipment. However, if the screen position is deviated or when exchanging parts, make an
adjustment as shown below.
adjustment as shown below.
• Turn on the power (lamp on state) and wait for 15 minutes for aging.
• Enter the adjustment process mode with SW2002 (tact switch) on the main unit.
• Select the group to adjust with the DOWN (
) key or the UP (
) key on the remote control, and enter the adjustment item with the ENTER
(
) key on the remote control.
• Select the adjustment item with the DOWN (
) key or the UP (
) key on the remote control.
• Use the LEFT (
) key or the RIGHT (
) key for adjustment.
• To return from the adjustment item to the adjustment group, use the UNDO (
) key.
• To exit the adjustment process mode, execute the factory setting at the end of the adjustment.
<Cautions for adjustment>
1. Initialization and factory setting
If the initialization S1 or the factory setting S5 of EEPROM is carried out, time for writing the data is necessary.
When executing EEPROM initialization S1 or S5, the OSD of adjustment process mode disappears, and the OSD of SET1 or SET5 appears. After
completing setting, the input is switched automatically (SET1: DVI A-RGB input, SET5: C1). Never turn off the power until the input is switched (a
little less than 1 minute).
completing setting, the input is switched automatically (SET1: DVI A-RGB input, SET5: C1). Never turn off the power until the input is switched (a
little less than 1 minute).
No.
Adjusting point
Adjusting conditions
Adjusting procedure
1
EEPROM initialization
1. Turn on the power (with the lamp on) and
warm up the set for 15 minutes.
warm up the set for 15 minutes.
1. Make the following settings.
Press SW2002 to enter the process mode, and exe-
cute S1 to initialize EEPROM.
After executing S1, the input switches to DVI-
AnalogRGB.
S1: Main and Sub EEPROM initialization
S2: Sub EEPROM initialization
Press SW2002 to enter the process mode, and exe-
cute S1 to initialize EEPROM.
After executing S1, the input switches to DVI-
AnalogRGB.
S1: Main and Sub EEPROM initialization
S2: Sub EEPROM initialization
2
MODEL setting and model name
check
check
Process menu: LINE
Select MODEL.
Select MODEL.
MODEL 0 DT5000
1 XVZ20000
2 XVZ21000
After setting, check that the model name displayed in
the first line of process menu is the same as the set-
ting.
1 XVZ20000
2 XVZ21000
After setting, check that the model name displayed in
the first line of process menu is the same as the set-
ting.
3
Color wheel sequence setting
Check the number marked at CW.
Adjustment group: DLP
Adjustment item: SEQUENCE
Initial value: 2
Adjustment group: DLP
Adjustment item: SEQUENCE
Initial value: 2
Color wheel number: SEQUENCE number
1
2
3
4
Color wheel index adjustment
1. Adjustment device: DDP3021
2. Adjustment group: DLP
3. Adjustment item: CW-INDEX
Initial value: 40
The built-in pattern for INDEX adjustment is
displayed.
2. Adjustment group: DLP
3. Adjustment item: CW-INDEX
Initial value: 40
The built-in pattern for INDEX adjustment is
displayed.
1. Adjust the setting so that the R, G and B Ramp tone
pattern should be smooth without noises.
pattern should be smooth without noises.
1
2
3
R
W
G
B
XV-Z20000/XV-Z21000/DT-5000
4 – 2
5-1
R-bright/contrast adjustment
1. Device: AD998417
2. Adjustment group: AD (RGB)
(Process gamma linkage)
3. Adjustment item: R-BRIGHT
Initial value: 40
Adjustment item: R-D
Initial value: 60
4. Input terminal: DVI A-RGB (Input switch-
ing linkage)
5. Input signal: XGA
Wind pattern having 100% (0.7 Vpp) R sig-
nal and 0%
2. Adjustment group: AD (RGB)
(Process gamma linkage)
3. Adjustment item: R-BRIGHT
Initial value: 40
Adjustment item: R-D
Initial value: 60
4. Input terminal: DVI A-RGB (Input switch-
ing linkage)
5. Input signal: XGA
Wind pattern having 100% (0.7 Vpp) R sig-
nal and 0%
1. Observe the 0% portion.
2. Vary R-Bright (increment direction), and adjust to
the point reduced by 1 point from the point where
red bit dropout appears.
3. Observe the 100% portion.
4. Vary R-D (increment direction), and adjust to the
point raised by 2 points from the point where red bit
dropout appears.
2. Vary R-Bright (increment direction), and adjust to
the point reduced by 1 point from the point where
red bit dropout appears.
3. Observe the 100% portion.
4. Vary R-D (increment direction), and adjust to the
point raised by 2 points from the point where red bit
dropout appears.
5-2
G-bright/contrast adjustment
1. Device: AD998417
2. Adjustment group: AD (RGB)
(Process gamma linkage)
3. Adjustment item: G-BRIGHT
Initial value: 40
Adjustment item: G-D
Initial value: 60
4. Input terminal: DVI A-RGB (Input switch-
ing linkage)
5. Input signal: XGA
Wind pattern having 100% (0.7 Vpp) G
signal and 0%
2. Adjustment group: AD (RGB)
(Process gamma linkage)
3. Adjustment item: G-BRIGHT
Initial value: 40
Adjustment item: G-D
Initial value: 60
4. Input terminal: DVI A-RGB (Input switch-
ing linkage)
5. Input signal: XGA
Wind pattern having 100% (0.7 Vpp) G
signal and 0%
1. Observe the 0% portion.
2. Vary G-Bright (increment direction), and adjust to
the point reduced by 1 point from the point where
green bit dropout appears.
3. Observe the 100% portion.
4. Vary G-D (increment direction), and adjust to the
point raised by 2 points from the point where green
bit dropout appears.
2. Vary G-Bright (increment direction), and adjust to
the point reduced by 1 point from the point where
green bit dropout appears.
3. Observe the 100% portion.
4. Vary G-D (increment direction), and adjust to the
point raised by 2 points from the point where green
bit dropout appears.
5-3
B-bright/contrast adjustment
1. Device: AD998417
2. Adjustment group: AD (RGB)
(Process gamma linkage)
3. Adjustment item: B-BRIGHT
Initial value: 40
Adjustment item: B-D
Initial value: 60
4. Input terminal: DVI A-RGB (Input switch-
ing linkage)
5. Input signal: XGA
Wind pattern having 100% (0.7 Vpp) B sig-
nal and 0%
2. Adjustment group: AD (RGB)
(Process gamma linkage)
3. Adjustment item: B-BRIGHT
Initial value: 40
Adjustment item: B-D
Initial value: 60
4. Input terminal: DVI A-RGB (Input switch-
ing linkage)
5. Input signal: XGA
Wind pattern having 100% (0.7 Vpp) B sig-
nal and 0%
1. Observe the 0% portion.
2. Vary B-Bright (increment direction), and adjust to
the point reduced by 1 point from the point where
blue bit dropout appears.
3. Observe the 100% portion.
4. Vary B-D (increment direction), and adjust to the
point raised by 2 points from the point where blue
bit dropout appears.
2. Vary B-Bright (increment direction), and adjust to
the point reduced by 1 point from the point where
blue bit dropout appears.
3. Observe the 100% portion.
4. Vary B-D (increment direction), and adjust to the
point raised by 2 points from the point where blue
bit dropout appears.
6-1
Component R-offset
1. Adjustment device: AD998417
2. Adjustment group: AD (COMP)
(Process gamma linkage)
3. Adjustment item: CR-OFFSET
Initial value: 50
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Input signal: Component 100% Ramp sig-
nal
2. Adjustment group: AD (COMP)
(Process gamma linkage)
3. Adjustment item: CR-OFFSET
Initial value: 50
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Input signal: Component 100% Ramp sig-
nal
1. Vary CR-OFFSET, and place the red line appearing
near the center over the green line.
2. The line color turns yellow.
near the center over the green line.
2. The line color turns yellow.
6-2
Component B-offset
(Auto adjustment)
(Auto adjustment)
1. Adjustment device: AD998417
2. Adjustment group: AD (COMP)
(Process gamma linkage)
3. Adjustment item: CB-OFFSET
Initial value: 50
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Input signal: Component 100% Ramp sig-
nal
2. Adjustment group: AD (COMP)
(Process gamma linkage)
3. Adjustment item: CB-OFFSET
Initial value: 50
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Input signal: Component 100% Ramp sig-
nal
1. Vary CB-OFFSET, and place the blue line over the
line turning yellow by CR-OFFSET adjustment.
2. The line color turns white.
line turning yellow by CR-OFFSET adjustment.
2. The line color turns white.
6-3
Component G-bright
1. Adjustment device: AD998417
2. Adjustment group: AD (COMP)
(Process gamma linkage)
3. Adjustment item: G-BRIGHT
Initial value: 70
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Component wind pattern having 100%
(0.7 Vpp) G signal and 0%
6. Perform adjustment after adjusting CR-
OFFSET and CB-OFFSET.
2. Adjustment group: AD (COMP)
(Process gamma linkage)
3. Adjustment item: G-BRIGHT
Initial value: 70
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Component wind pattern having 100%
(0.7 Vpp) G signal and 0%
6. Perform adjustment after adjusting CR-
OFFSET and CB-OFFSET.
1. Observe the 0% portion.
2. Vary G-BRIGHT (decrement direction), and the
screen starts to whiten.
3. Adjust to the point where no bit dropout is found
and the screen becomes completely white.
2. Vary G-BRIGHT (decrement direction), and the
screen starts to whiten.
3. Adjust to the point where no bit dropout is found
and the screen becomes completely white.
No.
Adjusting point
Adjusting conditions
Adjusting procedure
XV-Z20000/XV-Z21000/DT-5000
4 – 3
Do not change the process adjustment values other than the above since they are set so that optimal images are obtained.
6-4
Component RGB-gain adjust-
ment
(Auto adjustment)
ment
(Auto adjustment)
1. Adjustment device: AD998417
2. Adjustment group: AD (COMP) (Process
gamma linkage)
3. Adjustment item: G-D
Initial value: 70
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Component wind pattern having 100%
(0.7 Vpp) G signal and 0%
6. Perform adjustment after adjusting CR-
OFFSET, CB-OFFSET and G-BRIGHT.
2. Adjustment group: AD (COMP) (Process
gamma linkage)
3. Adjustment item: G-D
Initial value: 70
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Component wind pattern having 100%
(0.7 Vpp) G signal and 0%
6. Perform adjustment after adjusting CR-
OFFSET, CB-OFFSET and G-BRIGHT.
1. Observe the 100% portion.
2. Vary G-GAIN (decrement direction), and the illumi-
nance and chromaticity start to change.
3. Adjust to the point raised by 2 points from the point
where bit dropout appears on the screen.
2. Vary G-GAIN (decrement direction), and the illumi-
nance and chromaticity start to change.
3. Adjust to the point raised by 2 points from the point
where bit dropout appears on the screen.
7
White balance adjustment
1. Adjustment device: DDP3021
2. Adjustment group: DLP
3. Adjustment item: R-GAIN
Initial value: 95
B-GAIN
Initial value: 95
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Input signal: Component 75% gray signal
2. Adjustment group: DLP
3. Adjustment item: R-GAIN
Initial value: 95
B-GAIN
Initial value: 95
4. Input terminal: DVI A-Component
(Input switching linkage)
5. Input signal: Component 75% gray signal
1. Observe the chromaticity of 75% portion using
CL200.
2. Adjust the y value to adjustment chromaticity
CL200.
2. Adjust the y value to adjustment chromaticity
±
0.005 with B-GAIN.
3. Adjust the x value to adjustment chromaticity
3. Adjust the x value to adjustment chromaticity
±
0.005 with R-GAIN.
Adjustment chromaticity
x = 0.299
Adjustment chromaticity
x = 0.299
±0.005
y = 0.316
±0.005
8
Factory setting
1. Group: SSS
1. Perform the following settings.
Destination Process adjustment Remote control
setting
Europe: S3 Factory setting 3
North America: S4 Factory setting 4
Japan: S5 Factory setting 5
China: S6 Factory setting 6
South America: S7 Factory setting 7
Destination Process adjustment Remote control
setting
Europe: S3 Factory setting 3
North America: S4 Factory setting 4
Japan: S5 Factory setting 5
China: S6 Factory setting 6
South America: S7 Factory setting 7
No.
Adjusting point
Adjusting conditions
Adjusting procedure
XV-Z20000/XV-Z21000/DT-5000
4 – 4
[2] Process menu
Group
Subject
AD (RGB)
R-BRIGHT
Adjustment Value
Subject
G-BRIGHT
Adjustment Value
Subject
B-BRIGHT
Adjustment Value
Subject
R-D
Adjustment Value
Subject
G-D
Adjustment Value
Subject
B-D
Adjustment Value
Subject
AD-AUTO
—
No Use
AD (COMP)
G-BRIGHT
Adjustment Value
Subject
CR-OFFSET
Adjustment Value
Subject
CB-OFFSET
Adjustment Value
Subject
G-D
Adjustment Value
Subject
COMP-AUTO
0
Fixed Value
DLP
CW-INDEX
Adjustment Value
Subject
DLP-GAMMA
1
Fixed Value
R-BRIGHT
100
Fixed Value
G-BRIGHT
100
Fixed Value
B-BRIGHT
100
Fixed Value
R-GAIN
Adjustment Value
Subject
G-GAIN
95
Fixed Value
B-GAIN
Adjustment Value
Subject
CCA
0
Fixed Value
SEQUENCE
Adjustment Value
Subject
VIDEO1
PICTURESUB
128
Fixed Value
PICTURE
136
Fixed Value
BRIGHT
128
Fixed Value
TINT
128
Fixed Value
N-COLOR
128
Fixed Value
P-COLOR
120
Fixed Value
SV-COLOF
5
Fixed Value
YGC-CNT
0
Fixed Value
SETUP
1
Fixed Value
CTI
7
Fixed Value
N358DLY
7
Fixed Value
PALDLY
7
Fixed Value
H-CENTER
128
Fixed Value
VIDEO-AUTO
0
Fixed Value
VIDEO2
YTRAP FILNP
0
Fixed Value
CTRAP FILNP
0
Fixed Value
YTRAP FILS
1
Fixed Value
CTRAP FILS
2
Fixed Value
YCTRAP FIL
1
Fixed Value
YCTRAP GAIN
0
Fixed Value
FCTRAP SYS
1
Fixed Value
PEAK GAIN
128
Fixed Value
PEAK FIL
2
Fixed Value
PEAK CORING
0
Fixed Value
CR LPF
1
Fixed Value
CB LPF
1
Fixed Value
OUTPUT
R1-GAIN
128
Fixed Value
G1-GAIN
128
Fixed Value
B1-GAIN
128
Fixed Value
V-R1-GAIN
128
Fixed Value
V-G1-GAIN
128
Fixed Value
V-B1-GAIN
128
Fixed Value
C-R1-GAIN
128
Fixed Value
C-G1-GAIN
128
Fixed Value
C-B1-GAIN
128
Fixed Value
LINE
MODEL
Setting Value
Setting Item
TIME
—
Fixed Value
LAMP
0
Fixed Value
OFF
0
Fixed Value
TEMP OFF
4
Fixed Value
SENSOR CHECK
—
Fixed Value
