Sony KV-21FS140 (serv.man3) Service Manual ▷ View online
KV-21FS140
KV-21FS140
14
Convergence Rough Adjustment
Before performing this adjustment, perform Horizontal and Vertical Static
Convergence Adjustment.
Convergence Adjustment.
Input cross hatch pattern.
a)
TLH
Adjust the horizontal convergence of red and blue dots by inserting
TLH Correction Plate to the DY pocket (left or right).
TLH Correction Plate to the DY pocket (left or right).
b)
YCH
Adjust YCH to balance Y axis.
c)
TLV
Adjust YCh to balance Y axis.
d)
XCV
Adjust XCV to balance X-axis.
TLV
R B
YCH
R
B
XCV
B
R
TLH
B
R
YCH
DY pocket
DY pocket
XCV
TLV
XCV
TLV
TLH Plate
ON DY:
Screen Corner Convergence
Affi x a Piece A (90), Convergence Correct/Permaloy Assy Correction to
the misconverged areas.
the misconverged areas.
b
a
c
d
a-d : screen-corner
misconvergence
misconvergence
a1
b1
c1
d1
a1~d1:Piece A (90), Convergence Correct
or
Permaloy Assy Correction
2-3. FOCUS
FOCUS adjustment should be completed before White Balance
adjustment. (See 4-4. White Balance Adjustment)
1. Receive digital monoscope pattern.
2. Set Picture Mode to “DYNAMIC”.
3. Adjust focus VR to obtain a just focus at the center of the screen.
4. Change the receiving signal to white pattern and blue back.
5. Confi rm magenta ring is not noticeable. In case magenta ring is
obvious, then adjust FOCUS VR to balance magenta ring and
FOCUS.
FOCUS.
SCREEN
FOCUS
KV-21FS140
KV-21FS140
15
2-4. SCREEN (G2)
1. Before beginning adustment procedure:
-Set Picture and Brightness to “STANDARD”.
-Set TV to Video mode.
-Set WHBL 016 “RGBB” to 01
2. Connect R, G, B of the C/CV board cathode to oscilloscope.
3. Adjust Brightness to obtain the cathode value to the value shown
below:
165
± 2VDC
4. Adjust SCREEN VR on the FBT until the scanning line disappears.
5. Set WHBL 16 “RGBB” back to 00.
KV-21FS140
KV-21FS140
16
3-1. REMOTE ADJUSTMENT BUTTONS AND INDICATORS
MUTING
(Enter into
memory)
memory)
8
(Initialize)
5
Display previous
Category
Category
3
Increase
Data value
Data value
0
(Remove
from memory)
from memory)
ENTER
(Enter into
memory)
memory)
6
Decrease
Data value
Data value
1
Display next
Item
Item
2
Display next
Category
Category
4
Display previous
Item
Item
DISPLAY
(Service Mode)
POWER
(Service Mode)
VOLUME (+)
(Service Mode)
RM-YA005
SECTION 3: CIRCUIT ADJUSTMENTS
Electrical Adjustments by Remote Commander
Use the Remote Commander
(RM-YA005)
to
perform the circuit adjustments in this section.
Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator
KV-21FS140
KV-21FS140
17
3-2. ACCESSING THE SERVICE MENU MODE
Use the remote commander to access the service meu mode and perform the following adjusments.
1. Standby mode (Power off).
1. Standby mode (Power off).
2. Press the following buttons on the remote commander within a second of each other:
DISPLAY
Channel 5
Sound Volume +
POWER
The screen displays the fi rst service data category item.
item no.
service data
NVM
field
channel no./
category
in decimal
item name
in decimal
NG
service command
frequency
video input name
GEOM
000
HPOZ
055
x
SERVICE
60
VIDEO 1
software
service data
reserved
power on time
release ID
version
in binary
for factory
color system
(decimal)
STR31
7.11U
0011 1111
FF FF
- - - - -
00084
Status Byte
Status Byte
Flash DCXO
#1 SSD
#2 SSD
000 00 00 0000
3E
40 000
004000
0000FF
1. On the Remote Commander press 2 to select the next category, or 5 to select the previous category.
2. Press
1 to select the next item, or 4 to select the previous item.
3. Press
3 to increase the data value, or 6 to decrease the data value.
4. Press
MUTING then 0 to write into memory.
GREEN
GEOM
000
HPOS
039
SERVICE
50
VIDEO 1
write with
[MUTING].
GREEN
GEOM
000
HPOS
039
WRITE
50
VIDEO
1
GEOM
000
HPOS
039
WRITE
50
VIDEO
1
Write executed with
-.
RED
“WRITE” becomes red
when saving, then changes
to “SERVICE”
when saving, then changes
to “SERVICE”
“WRITE” displays when
saving changes
saving changes
Resetting the User Menus
Use the following procedure to reset the User Menus to the factory default settings.
1. Access
1. Access
Service
Adjustment
Mode.
2. Press
8 then 0 on the Remote Commander.
Click on the first or last page to see other KV-21FS140 (serv.man3) service manuals if exist.