Sony KV-XA21M83 Service Manual ▷ View online
– 41 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
YCH
Rotate
YCH
VOL on DY
TLH
Insert
TLH
Correction Plate to DY Pocket (Left or
Right)
Right)
TLV
Rotate
TLV
VOL on DY
ON DY:
YCH
TLV
(2) Dynamic Convergence Adjustment
Preparation:
•
Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence
convergence and the vertical static convergence
(3) Screen-corner Convergence
b
a
c
d
a-d : screen-corner
misconvergence
misconvergence
R B
TLV
YCH
B
R
– 42 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 5-1: ADJUSTMENTS
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],
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.
balance.
5) Set the PICTURE to maximum.
6) Select GDR (WHB 1) and BDR (WHB 2) with [1] and [4],
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.
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
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.
from the right is dimly lit.
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT
1) Set the PICTURE to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C1 board cathode to the
1) Set the PICTURE to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C1 board cathode to the
oscilloscope.
4) Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
5) Adjust G2 (screen) on the FBT until picture shows the
point before cut off.
White
second from the right
Black
0 V
Cathode setting voltage:
175 V
± 2 (VDC)
Fix a Permalloy assy corresponding to the misconverged
areas.
areas.
3-3.
FOCUS ADJUSTMENT
FOCUS adjustment should be completed before W/B adjustment.
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC".
3. Adjust focus VR so that the center of screen becomes just
2. Set "Picture Mode" to "DYNAMIC".
3. Adjust focus VR so that the center of screen becomes just
focus.
4. Change the receiving signal to white pattern and blue back.
5. Confirm magenta ring is not noticeable. Incase magenta is
5. Confirm magenta ring is not noticeable. Incase magenta is
very obvious, adjust focus VR to take balance of magenta
ring and focus.
ring and focus.
a
b
c
d
Permalloy assembly
FLYBACK TRANSFORMER (T503)
Screen
Focus
– 43 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the
supplied Remote Commander RM-915 and RM-952
supplied Remote Commander RM-915 and RM-952
a. ENTERING SERVICE MODE
With the unit on standby
This operation sequence puts the unit into service mode.
The screen display is :
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.
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), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] button to write into memory.
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and
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
3) Call the adjusted items again to confirm adjustments were
made.
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.)
usually.)
2, -
Write 50Hz adjustment data to 60Hz, or vice
versa.
versa.
n
[DISPLAY]
n
5
n
VOL (+)
n
[POWER]
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
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 [0] button. (The WRITE
display will be changed to red color while excuting, and
back to SERVICE.)
back to SERVICE.)
Example on screen display :-
PAL,SECAM:50
NTSC :60
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 new NVM
GEO
1.0C
59
7F
000A
0
630S
631S
633S
631S
633S
Device
Name
50
1F
SERVICE 50
HPS
Adjusted with [3]
and [6] buttons.
and [6] buttons.
GREEN
Write with [MUTING]
Write executed with [0]
GEO
00
7F
0
000A
59
1.0C
GREEN
1F
WRITE
50
HPS
GEO
00
7F
0
000A
59
1.0C
1F
SERVICE 50
HPS
RED
The WRITE display
then the display
returns to green
SERVICE
The WRITE display
then the display
returns to green
SERVICE
GEO
00
7F
0
000A
59
1.0C
630S
631S
633S
631S
633S
630S
631S
633S
631S
633S
630S
631S
633S
631S
633S
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 [0].
the adjustment item, use [3] and [6] to adjust, write with
[MUTING], then execute the write with [0].
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.
respective input signal after adjustment.
–
44
–
KV
-XA21M83/XA21M93/XA51M61/XA21P80
-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV
-XA21N93
-XA21N93
RM-915
Adjustment Item Table
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-
1
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