Sony KP-44PS2 / KP-44PS2U / KP-51PS2 Service Manual ▷ View online
– 29 –
KP-44PS2/44PS2U/51PS2
RM-903
4-5. 2-POLE MAGNET ADJUSTMENT
1. Receive the Dot signal.
2. Place the caps on the red and blue lens so that only the green
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Turn the green focus VR on the focus pack to the right and
set to over focus to enlarge the spot.
4. Now align the 2-Pole Magnet so that the enlarged spot is in
the center of the just focus spot.
(center of the dot doesn't move)
(center of the dot doesn't move)
5. Align the green focus VR and set for just (precise) focus.
6. Perform the same alignment for red and blue.
6. Perform the same alignment for red and blue.
Fig. 4-6
4-6.
4-POLE MAGNET ADJUSTMENT
1. Receive the Dot signal.
2. Place the caps on the red and blue lens so that only the green
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Turn the green focus VR on the focus pack to the left and set
to under focus to enlarge the spot.
4. Now align the 4-Pole Magnet so that the enlarged spot be-
comes a perfect circle.
5. Perform the same alignment for red and blue.
Fig. 4-7
4-7. GREEN, RED AND BLUE FOCUS
ADJUSTMENT
4-7-1. Green, Red and Blue Lens Focus Adjustment
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the green
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Rotate the green lens and adjust to obtain the best lens focus
at the center area.
4. Fix lens screw.
5. Repeat above process for red and blue.
5. Repeat above process for red and blue.
4-7-2. Green, Red and Blue Electrical Focus
Adjustment
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the green
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Rotate the green focus VR on the focus pack and adjust to
obtain the best electrical focus at the center area.
4. Repeat above process for red and blue.
Fig. 4-8
Adjust Point
Use the center dot
Use the center dot
OK
NG
NG
– 30 –
KP-44PS2/44PS2U/51PS2
RM-903
SECTION 5
SAFETY RELATED ADJUSTMENT
When replacing the following components marked with
] on
the schematic diagram, always check hold-down voltage and
if necessary re-adjust.
5-1. HV HOLD-DOWN ADJUSTMENT
1. Connect HV static voltmeter to HV Block.
2. Mount a resistor (R9901 : 43 k , 1/4 W, METAL
FILM) at CN5003.
3. Remove CN5002 and
connect External Power Supply to
CN5002 1 pin (+135 V) and 2 pin (GND).
4. Turn on the set.
Part Replaced (
])
D Board
C5123, C5127, C5130, C5143, D5115,
D5204, Q5104, R5136, R5138, R5140,
R9901, T5102, T5104, T5103 (FBT)
D5204, Q5104, R5136, R5138, R5140,
R9901, T5102, T5104, T5103 (FBT)
Part Replaced (
[)
R9901
5. Receive the Dot signal and set PICTURE/BRIGHTNESS
to minimum.
6. Slowly up the supply voltage from 0 V to 135 V until
hold-down circuit works (picture disappear).
7. Read the HV static voltmeter of peak HV voltage.
Spec : 33.7 ~ 35.3 kV
8. If Hold-down voltage is less than 33.7 kV then replace
R9901 of 43 k with that of 39 k , and check if the
voltage is within the spec.
voltage is within the spec.
9. If hold-down voltage is over than 35.3 kV then replace
R9901 of 43 k with that of 47 k , and check if the volt-
age is within the spec.
age is within the spec.
+
–
1
CN5002
Power
Supply
Supply
2
D BOARD
– CONDUCTOR SIDE –
CN5002
CN5003
CN5003
R9901
Fig. 5-1
Fig. 5-2
Fig. 5-3
Fig. 5-4
Remove the cap off
from the unused
terminal and connect a
HV static voltmeter
there.
from the unused
terminal and connect a
HV static voltmeter
there.
– 31 –
KP-44PS2/44PS2U/51PS2
RM-903
SECTION 6
ELECTRICAL ADJUSTMENTS
6-1. ADJUSTMENTS WITH COMMANDER
Service adjustment to this model can performed with the sup-
plied remote commander RM-903.
6-1-1. How to Select Each Mode
The adjustment requires the following modes:
Wide Zoom 14 : 9
4 : 3
Smart
DRC 100 (PAL)
a
a
a
×
a
DRC 50 (PAL)
a
a
a
×
a
DRC 100 (NTSC)
a
a
a
×
a
DRC 50 (NTSC)
a
a
a
×
a
1. Selection of Mode Between PAL and NTSC
PAL mode : Enter PAL signal.
NTSC mode : Enter NTSC signal. (VIDEO input only)
2. Selection of Digital Mode
1) Press “MENU” button on the commander, and the menu
screen will appear.
2) Press B key on the joystick to enter the “Picture Adjust-
ment” menu.
3) Press v or V key on the joystick to select “Digital Mode”,
and press B key.
4) Press v or V key on the joystick to select“Normal”,
“DRC50” or “DRC100”, and press “
(OK)”.
5) Press “MENU” button to return to normal screen.
(In the TT mode, the menu is switched to the Service menu)
3. Selection of Screen Format
1) Press “
(BLUE)” button on the commander.
2) Press v or V key on the joystick to select “Wide”, “Zoom”,
“14 : 9”, “4 : 3” or “Smart”, and press “
(OK)” button. At
this time, normal screen comes back. (In the TT mode, the
menu is switched to the Service menu.)
6-1-2. How to Enter TT Mode
1. Turn on the main power switch to place this set in standby
mode. (LED will light in red.)
2. Press the buttons on commander as follows, and the TT
mode will be selected.
“TT - -” will appear in the top right corner of the screen.
Other status information will also be displayed.
3. If “
(TV MODE)” button or “- ” + “- ” button is
pressed, the set exits from the TT mode and returns to nor-
mal TV mode.
6-1-3. How to Enter Service Menu
1. Enter the TT mode.
2. Press “MENU” button on the commander once, and normal
menu screen will appear, or press it once more, and the fol-
lowing service menu screen will appear.
3. Following the screen, press v or V key on the joystick to
select the desired item, and press B key to enter the selected
item.
4. Press v or V key on the joystick to change data of each item,
and press “
(OK)” button to write changed data.
(Except Projector Engine mode)
5. To return from each item, press b key on the joystick. Or, to
return to the TT mode, press the “MENU” button.
(Except Projector Engine mode)
RM 903
PROGR
MENU
1
4
7
2
5
8
0
3
6
9
VIDEO
TV
TV STANDBY
ON SCREEN
DISPLAY
DISPLAY
SCREEN
FORMAT
FORMAT
Wide
Zoom
14 : 9
14 : 9
4 : 3
Smart
MUTE
TV MODE
VOLUME +
JOYSTICK
MENU
SONY
RM-903
OK
TV
Enter the
“TT MODE”
5
(DIGIT 5)
(VOLUME +)
(TV MODE)
ON SCREEN
DISPLAY
( )
Service AE5(A)
Initialising
Reset Devices
Monitoring
Device Register Setting
Special Adjustment
Reset Devices
Monitoring
Device Register Setting
Special Adjustment
Select :
v V
Next menu :
B
– 32 –
KP-44PS2/44PS2U/51PS2
RM-903
6-1-4. Screen Display for Service Menu
If each item of service menu is selected, the following screen is
displayed.
Initialising
Model Setting
Destination Setting
Basic Setting
Feature Setting
Destination Setting
Basic Setting
Feature Setting
Select :
v V
Next menu :
B
• Initialising
• Initialising
b
Destination Setting
Destination Setting
Multi
A
B
D
E
K
R
U
A
B
D
E
K
R
U
Select :
v V
Last menu :
b
Set Dest. :
B
• Initialising
b
Model Setting
Model Setting
1
KV-29FX60
2
KV-29FC60
3
KV-29FS60
4
KV-28FX60
5
KV-32FX60
6
KV-32FS60
7
KV-28FC60
8
KV-32FC60
9
KV-28FC60Z
10
KV-32FC60Z
11
KV-28FS70
12
KV-32FS70
13
KV-36FS70
14
KP-48PS1
15
KP-53PS1
16
KP-61PS1
17
KP-44PS2
18
KP-51PS2
19
KF-50SX100
Select :
v V
Last menu :
b
Set Model :
B
• Initialising
b
Basic Setting
Basic Setting
No
Descr.
Min
Max
Data
1
Sys. B/G
OFF
ON
ON
2
Sys. D/K
OFF
ON
ON
3
Sys. L
OFF
ON
ON
4
Sys. I (UK)
OFF
ON
ON
5
Sys. I (IRL)
OFF
ON
ON
6
TXT Nat. Option
1
4
3
7
Simple PAT
OFF
ON
OFF
8
16 : 9 CRT
OFF
ON
ON
9
Sub-Woofer
OFF
ON
OFF
10
Auto Stand-By
OFF
ON
ON
11
Comb-Filter
OFF
ON
ON
12
Auto YC det
OFF
ON
ON
13
Auto Comb det
OFF
ON
ON
14
AV2 Available
OFF
ON
ON
15
AV3 Available
OFF
ON
ON
16
AV4 Available
OFF
ON
ON
17
AV3 Front & Rear
OFF
ON
OFF
18
SECAM Tape
OFF
ON
ON
19
AV1 Sound Mute
OFF
ON
OFF
Select :
v V
Last menu :
b
Enter Item :
B
• Initialising
b
Feature Setting
Feature Setting
No
Descr.
Min
Max
Data
1
PAP
OFF
ON
ON
2
PAT
OFF
ON
ON
3
INDEX
OFF
ON
ON
4
EPG
OFF
ON
ON
5
Full EPG
OFF
ON
ON
6
PictBoostBypass
OFF
ON
OFF
Select :
v V
Last menu :
b
Enter Item :
B
Reset Devices
Backend
Deflection
Ext. Deflection
Dynamic Convergence
Colour Decoder 1
Colour Decoder 2
Audio/Video Switch
MID-X
External PLL MID-X
Panorama Chip
Autowide
Sound
Picture Booster
Deflection
Ext. Deflection
Dynamic Convergence
Colour Decoder 1
Colour Decoder 2
Audio/Video Switch
MID-X
External PLL MID-X
Panorama Chip
Autowide
Sound
Picture Booster
Select :
v V
Last menu :
b
Reset Dev. :
B
• Reset Devices
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