Sony KP-51WS500 / KP-57WS500 / KP-65WS500 Service Manual ▷ View online
— 46 —
KP-51WS500/57WS500/65WS500
G BOARD
3-3. +B MAX VOLTAGE CONFIRMATION
The following adjustments should always be performed when replacing
IC501, R5032.
1. Supply 130VAC to variable autotransformer.
2. Receive dot signal pattern and set the PICTURE and BRIGHTNESS
IC501, R5032.
1. Supply 130VAC to variable autotransformer.
2. Receive dot signal pattern and set the PICTURE and BRIGHTNESS
settings to their minimum.
3. ConÞ rm the voltage of TP +B 135V is less than 137.0Vdc.
4. If step 3 is not satisÞ ed, replace IC501 and repeat steps 1-3.
4. If step 3 is not satisÞ ed, replace IC501 and repeat steps 1-3.
3-4. +B OVP CONFIRMATION
1. Add to low voltage power supply between to TP5001 and ground.
2. Supply 120VAC to variable autotransformer.
3. Power on the Set and receive dot signal pattern.
4. Set the PICTURE and BRIGHTNESS settings.
5. Check the OVP is activated.
Operate :less than 2.50V
2. Supply 120VAC to variable autotransformer.
3. Power on the Set and receive dot signal pattern.
4. Set the PICTURE and BRIGHTNESS settings.
5. Check the OVP is activated.
Operate :less than 2.50V
— 47 —
KP-51WS500/57WS500/65WS500
4-1. BLUE OFFSET ADJUSTMENT
1. Receive the all black (1080i, component) signal with VIDEO 5 input,
and set PICTURE to maximum.
2. Connect an oscilloscope between CN5
!
pin (B) on the (A board)
and ground.
3. Set in the service mode and select the category “2150D-2”.
4. Adjust “SLIN” so that the waveform level is 2.20 ± 0.05Vpp.
5. After completing the adjustments, write the data into memory by
4. Adjust “SLIN” so that the waveform level is 2.20 ± 0.05Vpp.
5. After completing the adjustments, write the data into memory by
pressing “MUTING” " “ENTER” on the remote commander.
6. Receive the RF signal and change the wide screen mode to “Wide
Zoom”. Copy the same data to “SLIN”.
Reference Pulse
2.20 ± 0.05 Vp-p
GND
16.7ms
4-2. P &P SUB CONTRAST
ADJUSTMENT (VIDEO) (SCON)
1. Receive the signal.
TV terminal (sub)
TV terminal (sub)
: Color-bar (white-75%, 7.5% setup)
VIDEO terminal (main)
: Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE
: Pro
PICTURE
:
Maximum
COLOR
:
Minimum
2150P-2 1 RGBS
: 2
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between the check point and ground.
Check points : CN5 pin #
A Board
4. Connect an oscilloscope between the check point and ground.
Check points : CN5 pin #
A Board
: CN5 pin #
5. Select “2103-1-02” (Main scon), and adjust so that the waveform level
of V
WB
is 1.55 ± 0.04Vp-p.
6. Select “2103-2-02” (Sub scon), and adjust so that the waveform level
of V
WB
is 1.55 ± 0.04Vp-p.
7. After completing the adjustments, write the data into memory by
pressing “MUTING” " “ENTER” on the remote commander.
White
Black
V
WB
4-3. P & P SUB CONTRAST ADJUSTMENT
(RF)
(RF)
(SCON)
1. Receive the signal.
TV terminal (sub)
TV terminal (sub)
: Color-bar (white-75%, 7.5% setup)
VIDEO terminal (main)
: Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE
: Pro
PICTURE
:
Maximum
COLOR
:
Minimum
2150P-2 1 RGBS
: 2
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between the check point and ground.
Check points : CN5 #
A
4. Connect an oscilloscope between the check point and ground.
Check points : CN5 #
A
Board
:
CN5
#
5. Select “2103-1-02” (Main scon), and adjust so that the waveform level
of V
WB
is 1.55 ± 0.04Vp-p.
6. Select “2103-2-02” (Sub scon), and adjust so that the waveform level
of V
WB
is 1.55 ± 0.04Vp-p.
7. After completing the adjustments, write the data into memory by
pressing “MUTING” " “ENTER” on the remote commander.
White
Black
V
WB
4-4. P & P SUB-HUE AND SUB-COLOR
ADJUSTMENT (VIDEO) (SHUE, SCOL)
ADJUSTMENT (VIDEO) (SHUE, SCOL)
1. Receive the signal.
TV terminal (sub)
TV terminal (sub)
: Color-bar (white-75%, 7.5% setup)
VIDEO terminal (main)
: Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE
: Pro
PICTURE
:
Maximum
COLOR
:
Center
2150P-2 1 RGBS
: 7
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between pin
4. Connect an oscilloscope between pin
!
of CN5 (A board) connector
and ground.
5. Select “2103-1-03 SCOL, -04 SHUE” (Main), and adjust them to have
VB1
≤
VB4 and VB2
≤
VB3 in the waveform levels.
6. Select “2103-2-03 SCOL, -04 SHUE” (Sub), and adjust them to have
VB1
≤
VB4 and VB2
≤
VB3 in the waveform levels.
7. After completing the adjustments, write the data into memory by
pressing “MUTING” " “ENTER” on the remote commander.
VB1 VB2 VB3 VB4
SECTION 4: CIRCUIT ADJUSTMENTS
— 48 —
KP-51WS500/57WS500/65WS500
4-5. P & P SUB-HUE AND SUB-COLOR
ADJUSTMENT
ADJUSTMENT
(RF)
(SHUE, SCOL)
1. Receive the signal.
TV terminal (main)
TV terminal (main)
: Color-bar (white-75%, 7.5% setup)
VIDEO terminal (sub)
: Color-bar (white-75%, 7.5% setup)
2. VIDEO MODE
: Pro
PICTURE
:
Maximum
COLOR
:
Center
2150P-2 1 RGBS
: 7
3. Set to P & P mode, and set to service mode.
4. Connect an oscilloscope between pin
4. Connect an oscilloscope between pin
!
of CN5 (A board) connector
and ground.
5. Select “2103-1-03 SCOL, -04 SHUE” (Main), and adjust them to have
VB1
≤
VB4 and VB2
≤
VB3 in the waveform levels.
6. Select “2103-2-03 SCOL, -04 SHUE” (Sub), and adjust them to have
VB1
≤
VB4 and VB2
≤
VB3 in the waveform levels.
7. After completing the adjustments, write the data into memory by
pressing “MUTING” " “ENTER” on the remote commander.
VB1 VB2 VB3 VB4
— 49 —
KP-51WS500/57WS500/65WS500
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less
are not indicated except for electrolytics and tantalums.
are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specifi ed.
All resistors are in ohms. K=1000, M=1000k
Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm
electrical power, is as follows: Pitch : 5mm
Rating electrical power :
1
/
4
W
1
/
4
W in resistance,
1
/
10
W and
1
/
8
W in chip resistance.
: nonfl ammable resistor.
: fusible resistor.
: internal component.
: panel designation and adjustment for repair.
: earth ground
: earth-chassis
All variable and adjustable resistors have characteristic curve B, unless
otherwise noted.
otherwise noted.
Readings are taken with a NTSC color-bar signal input.
Readings are taken with a 10M digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production tolerances.
All voltages are in V.
S : Measurement impossibillity.
: B+ line
: B-line. (Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
The components identifi ed by X in this basic schematic diagram have
been carefully factory-selected for each set in order to satisfy regulations
regarding X-ray radiation. Should replacement be necessary, replace
only with the value originally used.
been carefully factory-selected for each set in order to satisfy regulations
regarding X-ray radiation. Should replacement be necessary, replace
only with the value originally used.
When replacing components identifi ed by Y, make the necessary
adjustments as indicated. If the results do not meet the specifi ed value,
change the component identifi ed by X and repeat the adjustment until
the specifi ed value is achieved.
adjustments as indicated. If the results do not meet the specifi ed value,
change the component identifi ed by X and repeat the adjustment until
the specifi ed value is achieved.
(Refer to adjustments in Sections 3-1 and 3-2.)
When replacing the parts listed in the table below, it is important to
perform the related adjustments.
perform the related adjustments.
A BOARD:
HV REGULATOR
C8079, C8083, C8090,
C8129,
D8013, D8015, D8038,
D8043,
IC8006,
Q8021,
R8055, R8099, R8102,
R8128, R8129,
R8131, R8139, R8140,
R8142, R8153, R8163,
R8223, R8230,
T8004 (LOT), T8005 (FBT),
HV Block, D Board
C8129,
D8013, D8015, D8038,
D8043,
IC8006,
Q8021,
R8055, R8099, R8102,
R8128, R8129,
R8131, R8139, R8140,
R8142, R8153, R8163,
R8223, R8230,
T8004 (LOT), T8005 (FBT),
HV Block, D Board
VR8001
A BOARD:
HV HOLD DOWN
C8054, C8086, C8088,
C8100, C8104,
C8188, C8123, C8124,
D8019, D8020, D8022,
D8028, D8036,
FB8001,
IC8008,
Q8035, Q8038,
R8035, R8043, R8159,
R8166, R8171,
R8196, R8201,
T8004 (LOT), T8005 (FBT),
HV Block, D Board
C8100, C8104,
C8188, C8123, C8124,
D8019, D8020, D8022,
D8028, D8036,
FB8001,
IC8008,
Q8035, Q8038,
R8035, R8043, R8159,
R8166, R8171,
R8196, R8201,
T8004 (LOT), T8005 (FBT),
HV Block, D Board
VR8002
PartReplaced (
)
Adjustment (
)
5-1. CIRCUIT BOARDS LOCATION
SECTION 5: DIAGRAMS
5-2. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS INFORMATION
S
CG
CR
G
A
CB
H2
H1
V
V
D
AD
B
U
UD
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