Sharp XG-XV2E (serv.man2) Service Manual ▷ View online
29
XG-XV2E/M/A
ADJUSTING THE PC BOARD (CPCi-0023CE03. PC I/F Unit)
1. Initializing te EEPROM
1)
Press the S5001 key to call the process mode.
2)
Execute S1 on the SSS menu. (The S1 is used to initialize the PC board alone. Do not execute S2 because
otherwise all the adjusted data but the PC board will be initialized.)
otherwise all the adjusted data but the PC board will be initialized.)
2. Adjusting the level settings
2-1. Oscilloscope range setting
Set the range to DC 1V/div. and 5
µ
s/div.
2-2. Input signal
Feed the XGA 1024x768 60Hz gradation waveform signal.
2-3. Adjusting and checking the level settings
1)
Press the S5001 key to call the process mode.
2)
Adjust the SH-PHASE setting on the "OUTPUT 3" menu until the "OUTPUT 3" characters are not blurry any
longer.
longer.
3)
Connect a oscilloscope to TP2. Adjust the BRIGHT setting of "OUTPUT 2" to have the black level of the signal
at 1.7V.
at 1.7V.
4)
Adjust the ROS setting on the A/D menu until the voltage at the positive pole of C64 or pin (2) of IC11 becomes
1.7V.
1.7V.
5)
Adjust the GOS setting on the A/D menu until the voltage at the positive pole of C57 or pin (2) of IC10 becomes
1.7V.
1.7V.
6)
Adjust the BOS setting on the A/D menu until the voltage at the positive pole of C50 or pin (2) of IC9 becomes
1.7V.
1.7V.
7)
Make sure the GAIN setting on the A/D menu is 163.
8)
Connect the oscilloscope to TP1. Adjust the R-D setting on the A/D menu until the white top level of the signal
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
9)
Connect the oscilloscope to TP3. Adjust the B-D setting on the A/D menu until the white top level of the signal
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
10) Connect the oscilloscope to TP2. Adjust the G-D setting on the A/D menu until the white top level of the signal
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
11) Add 10 points to the BRIGHT setting on the OUTPUT2 menu.
12) Press the S5001 key to exit from the process mode.
12) Press the S5001 key to exit from the process mode.
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XG-XV2E/M/A
»
Process adjustment mode menu
1) Main menu
ADJ IN Ver. 0.1
A/D
OUTPUT 1
OUTPUT 2
OUTPUT 3
VIDEO 1
VIDEO 2
LINE
SSS
PATTERN
LENS
OUTPUT 1
OUTPUT 2
OUTPUT 3
VIDEO 1
VIDEO 2
LINE
SSS
PATTERN
LENS
2) A/D menu
A/D
ROS
128
GOS
128
BOS
128
GAIN
128
R-D
128
B-D
128
G-D
128
3) OUTPUT 1 menu
OUTPUT 1
R1-BLK
128
R1-GAIN
128
G1-BLK
128
G1-GAIN
128
B1-BLK
128
B1-GAIN
128
4) OUTPUT 2 menu
OUTPUT 2
R2-BLK
128
R2-GAIN
128
G2-BLK
128
G2-GAIN
128
B2-BLK
128
B2-GAIN
128
BRIGHT
128
5) OUTPUT 3 menu
OUTPUT 3
RC
128
GC
128
BC
128
SH-PHASE
8
RCK-PHASE
8
GCK-PHASE
8
BCK-PHASE
8
6) VIDEO 1 menu
VIDEO 1
NTSC-H
32
PICTURE
128
AGC
128
BRIGHT
128
TINT
128
N-COLOR
128
P-COLOR
128
S-COLOR
128
This menu is to
select the gamma
setting for normal
operation or for
process operation.
(Initial setting: ON)
select the gamma
setting for normal
operation or for
process operation.
(Initial setting: ON)
(Selection button: Mute key)
This menu is to
select the color
bar pattern display
ON/OFF. (Initial
setting: ON)
select the color
bar pattern display
ON/OFF. (Initial
setting: ON)
This menu is to
select the color
bar pattern display
ON/OFF. (Initial
setting: ON)
select the color
bar pattern display
ON/OFF. (Initial
setting: ON)
This menu is to
select the gamma
setting for usual
operation or for
process operation.
(Initial setting:
OFF)
select the gamma
setting for usual
operation or for
process operation.
(Initial setting:
OFF)
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XG-XV2E/M/A
9) SSS menu
SSS
TIME
S2
S3
S4
S5
LAMP TIME ON
S2
S3
S4
S5
LAMP TIME ON
Lamp on time display
Initialization (EEPROM)
Initialization (without
Initialization (EEPROM)
Initialization (without
blue background)
Factory setting (English)
Factory setting
Factory setting
(Japanese)
10) PATTERN menu
PATTERN
RGB
1
CROSS
1
RAMP
STEP
COLOR
CHR
MANUAL
STEP
COLOR
CHR
MANUAL
Colors: Red - Green - Blue
- White - Black - Magenta
- Cyan - Yellow, in solid
and cross-hatch pattern
- Cyan - Yellow, in solid
and cross-hatch pattern
Lamp
Step (8/16)
Color bar
Characters (Cross/
Step (8/16)
Color bar
Characters (Cross/
Backslash)
To manual mode
11) LENS menu
LENS
LENS AUTO
LENS TOP
LENS BOTTOM
LENS TOP
LENS BOTTOM
8) LINE menu
LINE
L1
L2
L3
L4
OFF
TEMP OFF
TEMP CHECK
L2
L3
L4
OFF
TEMP OFF
TEMP CHECK
7) VIDEO 2 menu
VIDEO 2
VROS
128
VGOS
128
VBOS
128
R-GAIN
128
B-GAIN
128
This menu is to
select the gamma
setting for usual
operation or for
process operation.
(Initial setting:
OFF)
select the gamma
setting for usual
operation or for
process operation.
(Initial setting:
OFF)
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XG-XV2E/M/A
TROUBLE SHOOTING TABLE
(Continued)
TROUBLE SHOOTING TABLE
Power on
Yes
No
Is the right input selected?
Select the right input with remote
control.
control.
Yes
No
Are the PC, video and LCP cables as
specified and properly connected?
specified and properly connected?
No
With the contrast control at maximum,
does the image appear?
does the image appear?
Use the right cables or reconnect the
cables.
cables.
Readjust the video system.
Yes
No
Is the voltage at TC1 connector as
specified?
specified?
Power circuit faulty.
Yes
Hook up a personal computer.
No
Does an image appear?
Check the clock circuit and its
peripheral circuits.
peripheral circuits.
Yes
No
Is the image as specified?
Check the sync signal circuit and its
peripheral circuits.
peripheral circuits.
Yes
No
Is the image's colors as specified?
Check the video circuit and its
peripheral circuits.
peripheral circuits.
Yes
No
Does the on-screen display function?
Check the OSD circuit and its
peripheral circuits.
peripheral circuits.
Yes
No
Does the remote control function?
Check the remote control.
Yes
End
A
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