Sony KV-DB34M61 Service Manual ▷ View online
– 13 –
KV-DB34M61
RM-GA001
5-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before White
Balance adjustment.
Balance adjustment.
1. Receive digital monoscope pattern.
2. Set Picture Mode to "STANDARD".
3. Adjust focus VR so that the center of the screen
2. Set Picture Mode to "STANDARD".
3. Adjust focus VR so that the center of the screen
becomes just focus.
4. Change the receiving signal to white pattern
and blue back.
5. Confirm magenta ring is not noticeable. In case
magenta ring is obvious, then adjust FOCUS VR
to balance magenta ring and FOCUS.
to balance magenta ring and FOCUS.
5-4. G2 (SCREEN) ADJUSTMENTS
1. Set the following condition:
- Picture and Brightness to "STANDARD".
- TV to Video mode.
- TV to Video mode.
2. Connect R,G,B of the C1 board cathode to
oscilloscope.
3. Adjust Brightness to obtain the cathode value
to the value stated below.
4. Adjust SCREEN VR [RV9001] on the FBT until the
scanning line disappears.
FLYBACK TRANSFORMER (T6805)
5-5. SUB BRIGHTNESS ADJUSTMENT
1. Set TV to RF Mode.
2. Input PAL monoscope to RF mode (OTHER model) and
2. Input PAL monoscope to RF mode (OTHER model) and
NTSC monoscope (NTSC model).
3. Set the following condition:
i) Set "PICTURE MODE" to "CUSTOM" and adjust
PICTURE to 0% and BRIGHTNESS to 50%.
ii) Receive RF PAL monoscope signal
(RF NTSC monoscope: NTSC models)
iii) Adjust Sub BRT (service item COLR 008 SBRT)
to make 10 IRE Slightly glimmer.
iv) Apply the offset steps according to TV size as in Sub
Brightness offset table
Preset constant
Sub Brightness offset
5-6. WHITE BALANCE ADJUSTMENT
1. Set to Service Mode.
2. Input white raster signal using signal generator.
3. Set the following condition:
2. Input white raster signal using signal generator.
3. Set the following condition:
i) Receive 100 IRE PAL white signal.
ii) Set to "VIVID" mode.
ii) Set to "VIVID" mode.
SADJ 003 COL 60
➔ 00
iii) Adjust White Balance
COLR
003
GDRV
004
BDRV
006
GCUT
007
BCUT
4) i) Receive PAL ALL White signal (10 uit)
ii) Set to "VIVID" mode
SADJ 003 COL 00
➔ 100
iii) Adjust color offset
MCP
010
CBOF
011
CROF
Lead Assy,
Focus
Focus
Focus
G2 Adjustment
Inch
R/G
B/G
34"
0.745
0.905
32"
0.775
0.915
29"
0.790
0.903
Inch
Offset
34"
Adjusted + 3 Steps
32"
Adjusted + 3 Steps
29"
Adjusted + 6 Steps
Cathode setting voltage:
170 V ± 2 (VDC)
170 V ± 2 (VDC)
– 14 –
KV-DB34M61
RM-GA001
iv)
Apply the offset steps according signal as in
Ta
b
le belo
w :
White Balance Offset
o
Ne
m
a
Nt
i
B
C
R
D
g
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AI
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D
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Y/
V
C/
S
B/
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0
8
4-
P
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Cp
6
7
5/
p
0
8
4p
0
2
7i
0
8
0
1r
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OC
R
Dp
0
8
4p
0
2
7i
0
8
0
1A
G
V
0
1F
O
B
C2
-
7d
et
s
uj
d
A4
-
d
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s
uj
d
A4
-
d
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s
uj
d
A2
+
d
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s
uj
d
A2
+
d
et
s
uj
d
A4
32
38
32
30
43
4
1
1F
O
R
C2
-
7d
et
s
uj
d
A5
-
d
et
s
uj
d
A3
-
d
et
s
uj
d
A3
+
d
et
s
uj
d
A3
+
d
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s
uj
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A7
38
33
48
38
48
4
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A/l
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T
C
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Dp
0
8
4p
0
2
7i
0
8
0
1
0
1F
O
B
C2
-
73
+
d
et
s
uj
d
A1
+
d
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s
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d
A6
-
d
et
s
uj
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A5
+
d
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s
uj
d
A0
43
+
d
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s
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A
1
1F
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C2
-
77
+
d
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s
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A7
+
d
et
s
uj
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A0
+
d
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A3
1
+
d
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A8
42
-
d
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A
– 15 –
KV-DB34M61
RM-GA001
SECTION 6
CIRCUIT ADJUSTMENTS
6-1.
ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the supplied remote commander RM-GA001.
a. ENTERING SERVICE MODE
With the unit on standby
This operation sequence puts the unit into service mode.
The screen display is as below:
The screen display is as below:
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), to select the adjustment item.
3. Change item by pressing 3, 6.
4. Press [MUTING] button to indicate WRITE on the screen.
5. Press - button to write into memory.
2. Press 1 (UP) and 4 (DOWN), to select the adjustment item.
3. Change item by pressing 3, 6.
4. Press [MUTING] button to indicate WRITE on the screen.
5. Press - button to write into memory.
Item no.
Service data
NVM
Service
Field
Channel no./
Category
in decimal
Item name
in decimal
NG
Command
Frequency
Video Input Name
WHBL
000
BKOR
000
x
SERVICE
50
S VIDEO 1
Software
Service data
Reserved
Power On Time
Release ID
Version
in binary
for factory
Color System
(decimal)
CGA01
0.16M
0000 0000
FF FF
NTSC3
00100
S_ _
: for Sony
A_ _
: for AIWA
L_ _
: BX1L Full
B_ _
: BX1L Basic
D_ _
: DVD Combo
C_ _
: CX1
Z_ _
: Sound Special
_ _ _01 : Serial no. of the M/P release for each destination
_ _ _10 ~: use for FY04
_ _ _SB : Sub Hercules
_ _ _10 ~: use for FY04
_ _ _SB : Sub Hercules
t [DISPLAY] t 5 t [VOL $+% ] t [POWER]
1, 4
Select the adjustment item.
r
3, 6
Raise/lower the data value.
r
[MUTING]
Writes.
r
-
Executes the writing.
For BP Board version; and PF Engine Version;
Category and release ID will be different. The rest
are the same. (not used for this model)
Category and release ID will be different. The rest
are the same. (not used for this model)
BP Board version
item no.
item
Category
in decimal
name
SUBP
000
10XH
software
release ID
version
CBP00
0.06
PF Engine version
item no.
item
Category
in decimal
name
9090
000
software
release ID
version
PF0018M
– 16 –
KV-DB34M61
RM-GA001
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.
2. Turn the power switch ON and set to Service Mode.
3. Call the adjusted items again to confirm adjustments were made.
e. OTHER FUNCTION VIA REMOTE COMMANDER
7, -
All the data becomes the values in memory.
8, -
All user control goes to the standard state.
Display , - Service data initialization (Be sure not to use usually.)
2, 5
2, 5
Select Device or Category
6-2.
ADJUSTMENT METHOD
Item Number 000 BKOR
This explanation uses Black Level Offset as an example.
1. Select "000 BKOR" with the 1 and 4 buttons, or 2 and 5.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is IF 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
This explanation uses Black Level Offset as an example.
1. Select "000 BKOR" with the 1 and 4 buttons, or 2 and 5.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is IF 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.)
Example on screen display :-
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 -.
[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.
000
50
BKOR
WHBL
000
0000
FF FF PAL 00122
0000
CGA01 0.16M
SERVICE
000
50
BKOR
WHBL
000
0000
FF FF PAL 00122
0000
CGA01 0.16M
WRITE
000
50
BKOR
WHBL
000
0000
FF FF PAL 00122
0000
CGA01 0.16M
WRITE
GREEN
Write with [MUTING]
Write executed with
GREEN
RED
The WRITE display
then the display
returns to green
SERVICE.
The WRITE display
then the display
returns to green
SERVICE.
Adjusted with 3
and 6 buttons.
and 6 buttons.
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