Sony KV-XF21M80 Service Manual ▷ View online
– 25 –
KV-XF21M80
RM-954
(3) Screen-corner Convergence
b
a
c
d
a-d : screen-corner
misconvergence
misconvergence
Fix a Permalloy assy corresponding to the misconverged
areas.
areas.
a
d
c
b
a to d : Permalloy assembly
Fix a Permalloy assy
corresponding to the
misconverged areas
corresponding to the
misconverged areas
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the flyback transformer for the best
focus.
FLYBACK TRANSFORMER (T503)
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 5-1: ADJUSTMENTS
WITH COMMANDER).
2) Input white raster signal.
3) Set the PICTURE to minimum.
4) Select GCT (WHB 4) and BCT (WHB 5) with
[1]
and
[4]
, and
adjust the level with
[3]
and
[6]
for the best white balance.
5) Set the PICTURE to maximum.
6) Select GDR (WHB 1) and BDR (WHB 2) with
[1]
and
[4]
, and
adjust the level with
[3]
and
[6]
for the best white balance.
7) Write into the memory by pressing
[MUTING]
then
[0]
.
3. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Input a staircase signal of black to white from the pattern
generator.
3) BRIGHTNESS .... 50%.
PICTURE ............ MINIMUM
4) Select SBR (WHB7) with
[1]
and
[4]
, and adjust SBR (WHB7)
level with
[3]
and
[6]
so that the second stripe from the right is
dimly lit.
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT
1) Set the PICTURE and BRIGHTNESS to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C board cathode to the oscilloscope.
4) Adjust G2 (Screen) volume to the value below.
White
second from the right
Black
0 V
175 V
±
2(VDC)
FOCUS
SCREEN
– 26 –
KV-XF21M80
RM-954
SECTION 4
CIRCUIT ADJUSTMENTS
With the unit on standby
↓
[DISPLAY]
↓
5
↓
VOL (+)
↓
[POWER]
This operation sequence puts the unit into service mode.
4-1. ADJUSTMENTS WITH COMMANDER
Service adjustments are made with the RM-952 that comes with
this unit.
a. ENTERING SERVICE MODE
1, 4
Select the adjustment item.
↓
3, 6
Raise/lower the data value.
↓
[MUTING]
Writes.
↓
-
Executes the writing.
7, -
All the data becomes the values in memory.
8, -
All user control goes to the standard state.
5, -
Service data initialization (Be sure not to use
usually.)
2, -
Write 50Hz adjustment data to 60Hz, or vice
versa.
PAL, SECAM : 50
NTSC : 60
00
HPS
1C
SERVICE
Data
Mode
Item Name
Item No
Software version
Suffix No
(OEM Code)
(OEM Code)
Total Power-On time (hours)
p
Marking of virgin NVM
GEO
1.0C
59
7F
000A
0
601S
Device Name
50
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
RM-952
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the commander),
then press [POWER] button again, hereupon it becomes TV mode.
c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), select an item of adjustment.
3) Press [MUTING] button and it will indicate WRITE on the screen.
4) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were made.
The screen display is :
– 27 –
KV-XF21M80
RM-954
4-2. ADJUSTMENT METHOD
Item Number 00 of device GEO
This explanation uses H-Position as an example.
1. Select “GEO 00 HPS” with the 1 and 4 buttons.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is 1F for PAL reception.)
4. Write with the
[MUTING]
button. (The display changes to
WRITE.)
5. Execute the writing with the - button. (The WRITE
display will be changed to red color while excuting, and back
to SERVICE.)
Use the same method for all Items. Use 1 and 4 to select the
adjustment item, use 3 and 6 to adjust, write with
[MUTING]
,
then execute the write with -.
Note : 1. In
[WRITE]
, the data for all items are written into memory
together.
2. For adjustment items that have different standard data
between 50Hz or 60Hz, be sure to use the respective
input signal after adjustment.
1F
SERVICE 50
HPS
Adjusted with
[3]
and
[6]
buttons.
GREEN
Written with
[MUTING]
Write executed with
[0]
GEO
00
7F
0
000A
59
601S 1.0C
1F
SERVICE 50
HPS
RED
The WRITE display
then the display
returns to a green
SERVICE.
The WRITE display
then the display
returns to a green
SERVICE.
GEO
00
7F
0
000A
59
601S 1.0C
1F
WRITE
50
HPS
GREEN
GEO
00
7F
0
000A
59
601S 1.0C
– 28 –
KV-XF21M80
RM-954
Adjustment Item T
able
Device
Functionality
Note
Data Range
Function
Note for
Register
Slava
RAM
Address
Name
No
Name
Dif
ferent Data
No. (bit)
Address
(bit)
GEO
0
HPS
7
3
F
H
Position
50/60HZ
12 (7-2)
CXA2130S(88H)
82 (7-2)
1
HSZ
1F
3F
H Size
50/60HZ
1
1
(7-2)
81 (7-2)
2
P
AP
1F
3F
Pin
Amp
50/60HZ
13 (7-2)
83 (7-2)
3
T
L
T
7
0
F
T
rapezium
50/60HZ
15 (7-4)
86 (7-4)
4
VPS
1F
3F
V Position
50/60HZ
0F (7-2)
7F (7-2)
5
VSZ
1F
3F
V Size
50/60HZ
0E (7-2)
7E (7-2)
6
SCO
7
0
F
S
Correction
50/60HZ
10 (7-4)
80 (7-4)
7
VLN
7
0
F
V
Linearity
50/60HZ
10 (3-0)
80 (3-0)
8
BOW
7
0
F
AFC Bow
50/60HZ
16 (7-4)
86 (7-4)
9
AGL
7
0
F
AFC-Angle
50/60HZ
16 (3-0)
86 (3-0)
0A
UPN
1F
3F
Upper Pin
50/60HZ
14 (7-2)
84 (7-2)
0B
LPN
2F
3F
Lower Pin
50/60HZ
18 (7-2)
88 (7-2)
0C
HBL
1
1
H Blanking on/of
f
18 (1)
67 (1)
0D
LBL
7
0
F
Left H Blanking
50/60HZ
17 (7-4)
87 (7-4)
0E
RBL
7
0
F
Right H Blanking
50/60HZ
17 (3-0)
87 (3-0)
WHB
0
RDR
1F
3F
R Drive
DYNAMIC/others
09 (7-2)
CXA2130S(88H)
8F (7-2)
1
GDR
1F
3F
G Drive
DYNAMIC/others
0A
(7-2)
90 (7-2)
2
BDR
1F
3F
B Drive
DYNAMIC/others
0B (7-2)
91 (7-2)
3
RCT
7
0
F
R
Cutof
f
SECAM/others
07 (3-0)
93 (3-0)
4
GCT
7
0
F
G
Cutof
f
SECAM/others
08 (7-4)
94 (7-4)
5
BCT
7
0
F
B
Cutof
f
SECAM/others
08 (3-0)
94 (3-0)
6
BMN
15
1F
Brightness Minimum Data
95
7
SBR
28
3F
Sub Brightness Control
98
SAJ
0
PMX
33
3F
Picture Maximum Data
CXA2130S(88H)
95
1
SHU
8
0
F
Sub Hue Control
TV/V
ideo
99
2
SSH
3
0
F
Sub Sharpness Control
TV/V
ideo
9A
3
SCL
1F
3F
Sub Color Control
NTSC/others
9B
VP
0
EHT
4
0
F
EHT
Comp
50/60HZ
15 (3-0)
CXA2130S(88H)
85 (3-0)
1
GMA
2
0
3
Gamma Correction
NTSC/others
0B (1-0)
1A1 (1-0)
2
YDL
6
0
F
Y
Delay
P
AL/SECAM/NTSC
0C (3-0)
8C (3-0)
3
SST
2
0
3
SECAM ID Start Position
1B (1-0)
6A
(1-0)
4
SSP
1
0
3
SECAM ID Stop Position
1B (3-2)
6A
(3-2)
5
S
L
V
2
0
3
SECAM ID Level
1C (1-0)
6B (1-0)
6
SBF
22
3F
SECAM BELL fO
1C
(7-2)
6B
(7-2)
7
DYC
1
1
Dynamic Color on/of
f
0A
(1)
59 (1)
8
ABL
1
1
ABL
Mode Switching (except ST
ANDARD)
09 (1)
58 (1)
9
VTH
1
1
ABL Detection Vth Switching
09
(0)
58
(0)
0A
SFO
1
1
FO Switching for Sharpness
NTSC/others
05 (1)
196 (1)
0B
DCX
1
1
DC
T
rans. Ratio Switching
06 (1)
55 (1)
0C
SHT
1
1
Pre-/Overshoot ratio Switch
NTSC/others
06 (0)
197 (0)
Click on the first or last page to see other KV-XF21M80 service manuals if exist.