DOWNLOAD Sony SDM-N50PS Service Manual ↓ Size: 3.82 MB | Pages: 56 in PDF or view online for FREE

Model
SDM-N50PS
Pages
56
Size
3.82 MB
Type
PDF
Document
Service Manual
Brand
Device
Monitor / S/M SDM-N50PS 00 US CA AEP
File
sdm-n50ps.pdf
Date

Sony SDM-N50PS Service Manual ▷ View online

SDM-N50PS
2-2
2-3. B BOARD REMOVAL
1
 Two copper foil tapes
2
 Two screws
3
 Shield case
CN501
CN508
CN507
4
 Two screws
Pan head screw
M 1.6
5
 Jack panel
6
 B board
LCD module (TFT)
Cushion
(
)
2-4. H BOARD REMOVAL
2
 Earth (H)
2
 Earth (H)
3
 Cover holder
CN501
4
 Washer (H)
5
 H board
6
 BH1 harness assembly
LCD module (TFT)
Cushion
1
 Three screws
(+BVTP3x6)
2-5. LCD MODULE (TFT) REMOVAL
2
 Panel tape
Front cover assembly
Cushion
1
 Remove the LCD module (TFT) in the
derecition of allow 
A
 horizontally.            
A
*Remove the B and H boards refering 2-3 and 2-4.
SDM-N50PS
2-6. A BOARD REMOVAL
2-3
2-7. G BOARD REMOVAL
b
c
a
1
 
Four screws
(+TP 3x5)
2
 
Two earth wires
3
 
Two connectors
(CN703, CN704)
Chassis plate assembly
5
 
Remove the terminal board assembly
in the direction of allow 
b
.
6
 
Remove the G board in the
direction of allow 
c
.
4
 
Remove the case in the
direction of allow 
a
.
CN703
CN704
* Remove A board refering 2-6.
CN705
CN701
CN702
1
 Four sheets (G)
2
 Four screws
(+BVTP  3x12)
5
 Three screws (+TP 3x5)
6
 Three connectors
(CN705, CN701, CN702)
4
 For screws (HD 15)
7
 A board
3
 Case (L)
SDM-N50PS
SECTION  3
ADJUSTMENTS
3-1
Connect the personal computer, monitor, and signal generator as shown below, and control the monitor.
Preset mode adjustment
Confirm the screen by below three kinds of the modes
within preseted frequency.
Signal mode
1.
MODE  0 (640X480 60Hz)
2.
MODE 10 (800X600 75Hz)
3.
MODE 17 (1024X768 75Hz)
(1) Input a cross hatch signal.
(2) Confirm both edges can see or white lines of edges are not
separating from indicated area edges.
Errors in the range of 2dot are permit.
Be saticefy one of both edges that is within above
specification.
White balance adjustment
When no measuring instrument is used, compare the color
with the reference set so that the colors will be the same.
1.
Adjustment of 9300°K
(1) Confirm every R/G/B_USER_BKG are initialized value.
(2) Receive MODE 15 (1024X768 60Hz) 80IRE.
Set COLOR to 9300°K. (COLOR_INDEX=1)
(3) Make adjustment with R/G_USR_DRV to set the
chromaticity within the specification.
y adjustment ..... Make adjustment with B_USR_DRV.
(Also x value changes simultaneous)
B_USR_DRV  UP
Values x and y decrease.
B_USR_DRV  DOWN
Values x and y increase.
x adjustment ..... Make adjustment with R_USR_DRV.
R_USR_DRV  UP
Value y increases.
R_USR_DRV  DOWN
Value y decreases.
Adjust again and bring down G_USR_DRV 10 STEP to
become within the specification ; however, in case of
adjustment range of y value become deficientlly and when
B_USR_DRV=255.
(4) Make the signal 30IRE all white to check that it is within the
specification.
(5) Adjust R/B_USER_BKG to become within the specification
when (4) deviates the specification.
(6) Input a grayscale and perform picture quality confirmation.
(7) Perform color save ( select C with ALT+M ).
Spec: 9300°K  80IRE (x, y) = (0.285, 0.294)
Within 3JND
9300°K  30IRE (x, y) = (0.265, 0.268)
Within 4JND
Note: Make adjustment up to ±0.002.
2.
Adjustment of 6500°K
(1) Confirm every R/G/B_USER_BKG are initialized value.
(2) Receive MODE 15 (1024X768 60Hz) 80IRE.
Set COLOR to 6500°K.  (COLOR_INDEX=2)
(3) Make adjustment with R/G_USR_DRV to set the chromaticity
within the specification.
y adjustment ..... Make adjustment with B_USR_DRV.
(Also x value changes simultaneous)
B_USR_DRV  UP
Values x and y decrease.
B_USR_DRV  DOWN
Values x and y increase.
x adjustment ..... Make adjustment with R_USR_DRV.
R_USR_DRV  UP
Value y increases.
R_USR_DRV  DOWN
Value y decreases.
Adjust again and bring down G_USR_DRV 10 STEP to
become within the specification ; however, in case of
adjustment range of y value become deficientlly and when
B_USR_DRV=255.
(4) Make the signal 30IRE all white to check that it is within the
specification.
(5) Adjust R/B_USER_BKG to become within the specification
when (4) deviates the specification.
(6) Input a grayscale and perform picture quality confirmation.
(7) Perform color save ( select C with ALT+M ).
Spec: 6500°K  80IRE (x, y) = (0.314, 0.324)
Within 3JND
6500°K  30IRE (x, y) = (0.295, 0.305)
Within 4JND
Note: Make adjustment up to ±0.002.
Computer for jig
1-690-391-21
Cord,Connection
D-sub
(9 pin [female])
mini Din
(8 pin)
1
A-1500-819-A
Interface Unit
SDM-N50
2
3
Connector
Attachment
Box Unit
Signal generator
(VG-823, etc.)
TO
INPUT-1
4 pin
4 pin
6 pin
To CN107 Connector
(A board)
* The parts above (     ~     ) are necessary for DAS adjustment.
1
3
1-900-255-59
Connector Assy
SDM-N50PS
3-2
3.
Adjustment of 5000°K
(1) Confirm every R/G/B_USER_BKG are initialized value.
(2) Receive MODE 15 (1024X768 60Hz) 80IRE.
Set COLOR to 5000°K. (COLOR_INDEX=3)
(3) Make adjustment with R/G_USR_DRV to set the chromaticity
within the specification.
y adjustment ..... Make adjustment with B_USR_DRV.
(Also x value changes simultaneous)
B_USR_DRV  UP
Values x and y decrease.
B_USR_DRV  DOWN
Values x and y increase.
x adjustment ..... Make adjustment with R_USR_DRV.
R_USR_DRV  UP
Value y increases.
R_USR_DRV  DOWN
Value y decreases.
Adjust again and bring down G_USR_DRV 10 STEP to
become within the specification ; however, in case of
adjustment range of y value become deficientlly and when
B_USR_DRV=255.
(4) Make the signal 30IRE all white to check that it is within the
specification.
(5) Adjust R/B_USER_BKG to become within the specification
when (4) deviates the specification.
(6) Input a grayscale and perform picture quality confirmation.
(7) Perform color save ( select C with ALT+M ).
Spec: 5000°K  80IRE (x, y) = (0.345, 0.352)
Within 3JND
5000°K  30IRE (x, y) = (0.322, 0.332)
Within 4JND
Note: Make adjustment up to ±0.002.position.
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