Sony KP-43T75 / KP-48S75 / KP-53N77 / KP-53S75 / KP-61S75 Service Manual ▷ View online
– 45 –
KP-43T75/48S75/
53N77/53S75/61S75
RM-Y906
[RED REGISTRATION ADJUSTMENT]
<RED CENTER, SKEW>
1. Cover the blue picture lens with the lens cap to show the green
and red colors.
2. Press
3 key on the remote commander to shift the GRN mode
to the RED mode.
3. Select RED CENT or RED SKEW with the
1 and 4 keys
on the remote commander and adjust while tracking each other
alternately.
4. Adjust the red crosshatch lines go straight vertically and
horizontally and overlaps the green lines with the joystick on
the remote commander.
<RED SIZE, LINEARITY>
1. Select RED SIZE (vertically and horizontally) or RED LIN
(vertically) with the
1 and 4 keys on the remote com-
mander and adjust while tracking each other alternately.
2. Adjust the red crosshatch lines go straight vertically and
horizontally and overlaps the green lines with the joystick on
the remote commander.
<RED KEY, PINCUSHION>
1. Select RED KEY or PINCUSHION with the
1 and 4 keys
on the remote commander and adjust while tracking each other
alternately.
2. Adjust the red crosshatch lines go straight horizontally and
overlaps the green lines
with the joystick on the remote commander.
Note : These are required when either severe miss-adjustment or
data loss occurred.
<FINE ADJUSTMENT>
1. Press
9 key on the remote commander to shift to the fine
adjustment mode.
The red cursor (in the RED mode) appears on the center of the
screen.
2. Use the
1 and 4 keys or the joystick on the remote com-
mander, move the cursor everywhere you want to adjust and
adjust with the joystick on the remote commander.
[BLUE REGISTRATION ADJUSTMENT]
1. Remove the lens cap from the blue picture lens to show full
color.
2. Press
3 key on the remote commander to shift the RED mode
to the BLU mode.
3. Adjust BLU CENT, BLU SKEW, BLU SIZE, BLU LIN, BLU
KEY and BLU PIN in the same procedure of the red registra-
tion adjustment.
[FINAL CHECK]
1. Store the new adjustment (offset) value on the remote control
by pressing
[MUTING] and [ENTER].
2. Press the FLASH FOCUS button on the front panel.
(The Offset value is now automatically stored.)
3. Check that no error message appears.
If an error message appears, recheck.
Note: In case of replacing CRTs, adjust the set-up adjustments
(items 3-1 to 3-8) and the registration adjustment (item 3-10).
In case of replacing two or three CRTs at the same time,
replace and adjust one by one.
– 46 –
KP-43T75/48S75/
53N77/53S75/61S75
53N77/53S75/61S75
RM-Y906
* In case of multiple error, last error is displayed.
[SENSOR POSITION]
• ERROR CODE SCREEN DISPLAY
* Error code will be displayed on center of screen for 3 seconds.
E 11 B
E 11 B
R. G. B
SENSOR NUMBER
ERROR CODE 10
ERROR
3
0
1
2
SCREEN
0 : UPPER SENSOR
1 : LEFT SENSOR
2 : RIGHT SENSOR
3 : LOWER SENSOR
• ERROR CODE DISPLAY IN REGI SERVICE MODE
PJE 2 9 1 4 0
ERR
ERR
ITEM NUMBER-29
ERROR CODE 40
SENSOR NUMBER
(ONLY "10"or "20")
(ONLY "10"or "20")
R.G.B
G-0 (Blank)
R-1
B-2
R-1
B-2
3-11. AUTO REGISTRATION ERROR CODE LIST
00
No Error
10
Sensor Output Level Low
* Check wiring, beam position, sensor.
0 : Upper Center
1 : Middle Left
2 : Middle Right
3 : Lower Center
20
Sensor Output Level High
* Check OP-amp circuit.
0 : Upper Center
1 : Middle Left
2 : Middle Right
3 : Lower Center
30
Adjustment Loop Counter Overflow
* Check the registring information on the convergence board.
40
Regi Data Overflow
* Check the convergence yoke driver ICs.
50
Regi Data Overflow
60
Offset Overflow
* Convergence patterns displayed are out of normal range.
70
Offset Overflow
ERROR
DISCRIPTION
NOTE
CODE
[ERROR CODE LIST]
If an error code is displayed after the set has been fully adjusted, correctly, please check the following items: position, tilt and sizing. If
either of these adjustments are off, even slightly, the auto-registration pattern will not hit the four sensors properly. This occurs when the
internal generator patterns is being flashed on the screen for the sensors to read. Therefore, auto registration (called auto-focus) cannot
operate properly causing an error code to be displayed. In order for this function to operate properly, correct position, tilt and size must be
adjusted properly.
– 47 –
KP-43T75/48S75/
53N77/53S75/61S75
RM-Y906
Remove the cap off from
the unused terminal and
cpmmect a static voltmeter
there.
the unused terminal and
cpmmect a static voltmeter
there.
SECTION 4
SAFETY RELATED ADJUSTMENTS
4-1. HV REGULATION CIRCUIT CHECK AND
ADJUSTMENT
When replacing the following components marked with
on the schematic diagram always check HV regulation, and
if necessary re-adjust.
on the schematic diagram always check HV regulation, and
if necessary re-adjust.
:
C517
:
C517, C521, C522
IC654, L504
T502, T504 (FBT)
D.Y, A board, G board
IC654, L504
T502, T504 (FBT)
D.Y, A board, G board
[ G BOARD]
4-2. HV HOLD DOWN CIRCUIT OPERATION
CHECK AND ADJUSTMENT
When replacing the following components marked with
on the schematic diagram always check hold-down voltage
and if necessary re-adjust.
on the schematic diagram always check hold-down voltage
and if necessary re-adjust.
:
R536, R545
:
C516, C536
D506, D507, D522
IC206, IC502, IC654
L504, R511, R522, R536, R538, R545,
R548, R584
T502, T504 (FBT)
D.Y, A board, G board
D506, D507, D522
IC206, IC502, IC654
L504, R511, R522, R536, R538, R545,
R548, R584
T502, T504 (FBT)
D.Y, A board, G board
Fig. 4-1
OPERATION CHECK
1. Connect a HV static voltmeter to the unconnected plug of
the high-voltage block. (Fig.4-1)
2. Power on the set.
3. Receive the dot signal. (PICTURE and BRIGHTNESS to
3. Receive the dot signal. (PICTURE and BRIGHTNESS to
minimum)
4. Check that the HV static voltmeter is reading 31.00
±
1.0
kVdc.
1.5
HV Regulation adjustment
1. Connect a HV static voltmeter to the unconnected plug of
the hight-voltage block.
2. Power on the set.
3. Receive the dot signal. (PICTURE and BRIGHTNESS to
3. Receive the dot signal. (PICTURE and BRIGHTNESS to
minimum)
4. If anode voltage is 31.95kV or higher, replace C517 of 470PF/
2kV with that of 1000PF/2kV, and check if the voltage is
within the standard range.
within the standard range.
5. If anode voltage is 29.45kV or lower, replace C517 of 470PF/
2kV with that of 100PF/2kV, and check if the voltage is within
the standard range.
the standard range.
OPERATION CHECK
4-3. +B MAX VOLTAGE CONFIRMATION
The following adjustments should always be performed when
replacing IC654.
1. Supply 130VAC to with variable autotransformer.
2. Input a dot signal.
3. Set the PICTURE control and the BRIGHTNESS controls to
replacing IC654.
1. Supply 130VAC to with variable autotransformer.
2. Input a dot signal.
3. Set the PICTURE control and the BRIGHTNESS controls to
minimum.
4. Confirm the voltage of G BOARD TP135V is less than
137.0Vdc.
5. If step 4 is not satisfied, replace IC654 and repeat above steps.
HV HOLD-DOWN ADJUSTMENT
1. Repart steps
1 ~ 7 as above.
2. If hold down voltage is 34.5kV or higher, remove R536,
mount a resistor (150k
Ω
, 1/4W : RN) onto R545 instead, and
check again if the hold-down voltage is within the standard
range.
range.
3. If hold down voltage is 32.5kV or lower, mount a resistor
(220k
Ω
, 1/4W : RN) onto R536 and check again if the hold-
down voltage is within the standard range.
NOTE : Please finish the adjustment as soon as possible
1. Remove CN652 connecter.
2. Short-circuit across TP-PROT and ground.
3. Connect a HV static voltmeter to the unconnected plug of
2. Short-circuit across TP-PROT and ground.
3. Connect a HV static voltmeter to the unconnected plug of
the high-voltage block.
4. Connect a 220
Ω
/200W variable resistor, across pin 2 and
pin 1 of CN652 and connect an external dc power supply
unit (200V, class 2A) to pin 3 of CN652.
unit (200V, class 2A) to pin 3 of CN652.
5. First turn on the external power supply (+B=135V), then
turn on the power of the set.
6. Receive the dot signal. (PICTURE and BRIGHTNESS to
minimum)
7. Gradually increase the value of the external dc power supply
and check that the hold-down circuit operates at a static
voltmeter reading of 33.5
voltmeter reading of 33.5
±
1.0kVdc when the raster
disappears.
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KP-43T75/48S75/
53N77/53S75/61S75
53N77/53S75/61S75
RM-Y906
4-4. +B OVP CONFIRMATION
1. Connect an external dc power supply to TP OVP.
2. Supply 120VAC to variable autotransformer.
3. Set PICTURE and the BRIGHTNESS controls to minimum.
4. Gradually turn the external dc power supply, and check if
2. Supply 120VAC to variable autotransformer.
3. Set PICTURE and the BRIGHTNESS controls to minimum.
4. Gradually turn the external dc power supply, and check if
OVP works properly when the voltage of the external dc
power supply is between 139.0 ~ 155.0V.
power supply is between 139.0 ~ 155.0V.
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