Sony KDS-50A2020 / KDS-55A2020 / KDS-60A2020 Service Manual ▷ View online
– 24-1 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010 RM-YD010 RM-YD010
SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
3-1-1. PICTURE DISTORTION CORRECTION
MECHANISM
After the control door of the front panel is opened, and terminal
bracket (FR) is removed, the picture distortion correction mecha-
nism is appeared.
Note: Please refer to “2-14. TERMINAL BRACKET (FR)” for
how to remove terminal bracket (FR).
control door
terminal bracket (FR)
Three fixed screws in adjuster plate (V) (picture trap correction)
and adjuster plate (R) (picture rotation correction) are removed,
each correction can be adjusted by sliding the plate.
Note: Please tighten three screws that fix the adjuster plate
surely after the correction ends.
adjuster plate (R)
adjuster plate (V)
Note: Please do neither picture distortion correction nor the
picture rotation correction at the same time.
The following photographs and illustrations are published with
the front panel removed to make easily to understand.
1) V-TRAP Correction 1
Adjuster plate (V) is moved to the right as shown in the
photograph.
A square picture becomes a trapezoid shape.
2) V-TRAP Correction 2
Adjuster plate (V) is moved to the left as shown in the
photograph.
A square picture becomes a reverse-trapezoid shape.
adjuster plate (V)
3) Picture Rotation Correction 1
Adjuster plate (R) is moved below as shown in the photograph.
The picture rotates clockwise.
adjuster plate (V)
adjuster plate (R)
– 24-2 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010 RM-YD010 RM-YD010
4) Picture Rotation Correction 2
Adjuster plate (R) is moved up as shown in the photograph.
The picture rotates counterclockwise.
adjuster plate (R)
Category Name
Item Name
Input Signal
Mode
Item No.
VERSION
0
0
SERVICE
VER
TVMICRO
F/A : xxxxxxxx
CBA : xxxxxxxx
Data
Category Name
Item Name
Item No.
D9671-1
0
0
G
I2CSCAL
96H 28DEG
9CH 24DEG
LCD PJ ENGINE
VER.10.00B
03/10/07
732B
Data
<LCD PROJECTOR ENGINE>
3-2-1-2. Service Mode Adjustment
1. The SCREEN displays the item being adjusted.
2. Press “1” or “4” on the remote commander to select the
2. Press “1” or “4” on the remote commander to select the
adjustment item.
3. Press “3” or “6” on the remote commander to change the data.
4. Press “2” or “5” on the remote commander to select the category.
5. If you want to recover the latest values press “-” then
4. Press “2” or “5” on the remote commander to select the category.
5. If you want to recover the latest values press “-” then
“[ENTER]” to read the memory.
6. Press “[MUTING]” then “[ENTER]” to write into memory.
7. Turn power off.
<Method of setting the shipping condition>
1. Service Adjustment mode.
2. Press “8” then “[ENTER]”
3. Wait until appearing “ Initial Setup” display.
4. Disconnect AC plug and connect again to change factory re-
1. Service Adjustment mode.
2. Press “8” then “[ENTER]”
3. Wait until appearing “ Initial Setup” display.
4. Disconnect AC plug and connect again to change factory re-
set condition completely.
3-2-1-3. Memory Write Confirmation Method
1. After adjustment, turn power off with the remote commander.
2. Turn power on and set to service mode.
3. Call the adjusted items again and confirm they were adjusted.
3-2-1-4. Adjusting Buttons and Indicator
3-2. ELECTRICAL ADJUSTMENT
3-2-1. ELECTRICAL ADJUSTMENT BY REMOTE
COMMANDER
By using remote commander (RM-YD010), all circuit adjust-
ments can be made.
NOTE : Test Equipment Required.
1. Pattern Generator (with component outputs)
2. Oscilloscope
3. Digital multimeter
3-2-1-1. Method of Setting the Service Adjustment
Mode
1. Standby mode. (Power off)
2. DISPLAY
t 5 t VOL (+) t TV POWER
on the remote commander.
(Press each button within a second.)
The following service screen will appear.
DISPLAY
POWER
MUTING
VOL +
ENTER
RM-YD010
Adjustment item
up
up
Adjustment item
down
down
Adjustment category
up
up
Read data from
NVM
NVM
Adjustment category
down
down
Data up
Data down
Initialize data
(Not stored)
(Not stored)
User control goes
to the standerd state
(Shipping Conditions)
to the standerd state
(Shipping Conditions)
FUNCTION OF KEYS ON COMMANDER
• 1
: Changes adjustment item. (item No. moves up)
• 4
: Changes adjustment item. (item No. moves down)
• 2
: Changes adjustment category.
(category moves up)
• 5
: Changes adjustment category.
(category moves down)
• 3
: Changes data value. (up)
• 6
: Changes data value. (down)
– 25 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010 RM-YD010 RM-YD010
3-2-2. To read Lamp and Panel time
The lamp and panel time of the set are displayed as follows .
<Enter the service mode>
1. Press the keys of the remote commander in rapid sequence as
follows , when the set is in standby mode.
DISPLAY
t Channel 5 t Vol + t POWER
2. Press the “JUMP ” key [3 times].
You’ll get into DE-micro service menu .
3. Press “2 ” key several times until it shows the following
display.
This screen reads “Total lamp time is 14 hours”. To reset lamp
time, press “1 ” to set the reset. Press “3” , “MUTE ” and “ENTER
” keys in sequence. WRI-EXE(Red Character) is momentarily
displayed and LampTM will be reset to “0 ”.
4. Press “ 1 ” key several times until it shows the following dis-
time, press “1 ” to set the reset. Press “3” , “MUTE ” and “ENTER
” keys in sequence. WRI-EXE(Red Character) is momentarily
displayed and LampTM will be reset to “0 ”.
4. Press “ 1 ” key several times until it shows the following dis-
play.
5. To check Panel Time, press "1" key [1 more times] at the
previous display of Lamp Time.
The following display will be shown.
<To get out of the Service menu>
The Service menu is cleared by turning off the set with a remote
commander or the power switch .
commander or the power switch .
3-2-3. Test Reset
The user settings can be reset to the factory default condition as
follows.
1. Press “TEST “ and “RESET “ key in sequence when the set is ON .
follows.
1. Press “TEST “ and “RESET “ key in sequence when the set is ON .
The LAMP,TIMER and POWER LED light and the picture is
muted.
After about 5 seconds the LAMP and TIMER LED go off,
and the color of POWER LED changes from amber to green.
After another 10 seconds the reset is completed and the initial
muted.
After about 5 seconds the LAMP and TIMER LED go off,
and the color of POWER LED changes from amber to green.
After another 10 seconds the reset is completed and the initial
set-up display appears.
PANEL
SERVICE
21 Timer
0 LMP
0 LMP
14
Diff
1
60Hz
Example
PANEL
SERVICE
21 Timer
1 LMPRST
1 LMPRST
0
Diff
1
60Hz
Example
DEM/TG H_CENT (for H center)
V_CENT (for V center)
V_CENT
H_CENT
3-2-4. H/V Center Confirmation and
Adjustment
Please check the picture horizontal/vertical center after the re-
placement of the following parts .
• Optical block
• Top assembly
1, Check H/V center with 480i monoscope signal in “Full “
mode .
2, If the center is shifted , adjust it with the following service items .
Please record the steps shifted as
DFD 16 and
CXD9713 .
PANEL
SERVICE
21 Timer
2 OPERAT
2 OPERAT
3
Diff
1
60Hz
Example
Commander Function
Button
Mode
Description
[MUTING]
+
[ENTER]
WRITE
Writes data to NVM.
-
+
[ENTER]
READ
Reads data from NVM.
8
+
[ENTER]
RESET
Set the shipping condition.
– 26 –
KDS-50A2020/55A2020/60A2020
K
RM-YD010 RM-YD010 RM-YD010
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM (1)
K
VIDEO
K
AUDIO L
K
AUDIO L/R
K
AUDIO L
K
AUDIO R
K
AUDIO L
K
AUDIO L
K
AUDIO R
K
AUDIO R
K
AUDIO L
K
AUDIO R
K
AUDIO L/R
K
AUDIO R
K
VIDEO
K
CR/R
K
C
K
CV/Y
K
Y/G
K
CB/B
K
AUDIO L
K
AUDIO L
K
AUDIO R
K
AUDIO R
CN8006 (1/2)
10
TU_V_OUT
5
TU_R_OUT
7
TU_L_OUT
9
AFT_OUT
12
TU_SCL
14
AGC_MUTE
13
TU_SDA
SCL_3.3V
TU_V_OUT
SDA_3.3V
TO
QT BOARD
CN7803
SCL
CN8570
SDA
PC_H
PC_V
PC_R
PC_G
PC_B
Vcc
D5V
F8570
5
COMP2_Y
1
COMP2_CR
3
COMP2_CB
TO
H3 BOARD
CN3100
Q8300
BUFFER
X8300
4MHz
1
89
90
Q8313, 8315
BUFFER
Q8301
BUFFER
IN2_CV
94 R_IN14
93 G_IN14
92 B_IN14
38 IN4_H
37 IN4_V
PC_V
D5V
PC_H
21 CV3
116 S1_4
119 CV/CR/R_IN9
119 CV/CR/R_IN9
118 Y/Y/G_IN9
Y/Y/G_IN8
117 C/CB/B_IN9
C/CB/B_IN8
C/CB/B_IN8
Y/Y/G_IN7
C/CB/B_IN7
C/CB/B_IN7
Y/Y/G_IN6
C/CB/B_IN6
C/CB/B_IN6
CV/YOUT1_2
COUT1_2
85
Q8305
BUFFER
C/CR/R_OUT1_1
81
Q8306
BUFFER
C/CB/B_OUT1_1
83
Q8307
BUFFER
CV/Y/G_OUT1_1
40
Q8311
BUFFER
SYNC_OUT1
53
SEL_HOUT1
54
SEL_VOUT1
41
SYNC_IN1
71
CVOUT3
VSW_HS
DATA_SLICER_MAIN
SP_PROT
B_12V
I2C_5V
VSW_VS
50
PS_HVCS
PC_SYNC_DET
60
SCL
59
SDA
SCL_5V
SDA_5V
IC8301
VIDEO SW
C
Y
V
L
R
V
L
R
AU_L1
TV_M_L_IN
TV_M_R_IN
TV_M_R_IN
AFT_MAIN
AGC
AU_R1
AU_L3
AU_R3
AU_L1
AU_R1
AU_L3
AU_R3
AU_R3
Y1
C1
V1
V3
V3
V_DET
MAIN_H_SYNC
S1
V1
Y1
C1
S1
Y4
CB4
CR4
AU_L4
Y4
CB4
CR4
AU_R4
AU_L5
AU_R5
AU_L4
AU_R4
AU_L5
AU_R5
CR2
CB2
Y2
TB8300
CN8303
J8401
4
3
1
2
RED
RED
WHT
GRN
BLU
RED
RED
WHT
GRN
BLU
CN8301
1
3
4
Y5
CB5
CR5
Y5
CB5
CR5
15
V2_V
14
COMP_DET
17
V2_L
19
V2_R
TO
H3 BOARD
CN3101
V2
V2_INPUT_L2
V2_INPUT_R2
V2_INPUT_R2
COMP_DET
CN8001 (1/2)
J8570
1
2
3
5
6
7
11
9
10
23 CV2
8 S1_3
EXT_CLK/XTAL
49
A30
A31
A27
A29
A28
TO
B1 BOARD
CN4000
CN8304 (1/4)
MAIN_CV/Y
MAIN_Y/G
MAIN_C
MAIN_CB/B
MAIN_CR/R
TB8301
14 IN5_R
13 IN5_L
39
LOUT1
37
ROUT1
IC9602
AUDIO SW
16 IN6_L
17 IN6_R
2 IN1_R
1 IN1_L
19 IN7_L
IN7_R
22 IN8_L
23 IN8_R
23 IN8_R
11 IN4_R
10 IN4_L
PC_AU_L
PC_AU_R
8 IN3_R
7 IN3_L
25 IN9_L
26 IN9_R
32
DAT-1
31
CLK-1
20
TV_M_L_IN
TV_M_R_IN
42
R-
37
R+
34
L-
39
L+
SP_L
SP_R
L
R
A1(1/2)
( )
TO/FROM
2/2
IC8570
EEPROM
5
7
SDA
WP
WRT_PRT
6 SCL
Q8327, 8328, 8330
BUFFER
Q8317-8319
BUFFER
Q8308, 8309
BUFFER
Q8570
SW
Q8316
CLAMP
Q8314
CLAMP
TO/FROM
2/2
TO/FROM 2/2
VIDEO IN
HD/DVD IN
S VIDEO
PC IN
RGB
VIDEO
VIDEO
P
B
P
R
AUDIO
L (MONO)
R
AUDIO
AUDIO
AUDIO
L (MONO)
R
Y
L
R
5
P
B
P
R
Y
L
R
AUDIO OUT
(VAR/FIX)
DIGITAL OUT
(OPTICAL)
R
L
IC9606
INV.
Q9311
Q9310
D9316
D9311
D9317
Q9614
AMP
CN9800
PC IN
AUDIO
IC8302
BUFFER
1
7
10
5
1
12
IN+3
IN+1
IN+2
OUT3
OUT1
OUT2
+
-
+
-
7
1
3
2
5
6
6
IC9400
I2S SELECTOR
IC9303
28
SP_OUT_L
34
SC2_OUT_L
33
SC2_OUT_R
27
SP_OUT_R
19
I2S_CL3
20
I2S_WS3
22
I2S_DA_IN3
SC1_IN_R
SC1_IN_L
57
I2C_CL
FE_BCK
HDMI_INT
LINE_MUTE
FE_LRCK
FE_DATA
FE_BCK
FE_LRCK
FE_DATA
FE_LRCK
FE_DATA
HDMI_BCK
HDMI_LRCK
HDMI_DATA
HDMI_BCK
HDMI_LRCK
HDMI_DATA
HDMI_LRCK
HDMI_DATA
HDMI/DTT_SW
2
I2CDA
I2S-DEL_IN
3
SCL
2
SDA
3
RESETQ
21
8
AUDIO_CLOCK_OUT
PCLK
IISM_OUT
IISM_IN
BIT_CLK
LR_CLK
74
I2S-DEL_OUT
9
I2S-DEL_CL
10
I2S-DEL_WS
11
59 13 8 11
56
2
4
11
18
29
22
29
22
Q9316
DLY_RST
RST
IO0
ı
IO7
A0
ı
A16
I/O1
ı
I/O8
A0
ı
A16
FWR
FRD
WE
OE
SW
IC9305
DELAY
IC9306
RAM
18
16
14
2
4
6
13
15
17
7
5
3
Q9314
SW
Q9300
SW
19
1
IC9308
AMP
VAR_L
VAR_R
5
3
1
7
IC9802
AMP
5
3
1
7
IC9804
AP
IC9803
AMP
IN1
STBY/MUTE
7
8
CP1O
OUTA1
OUTA1
IN2
CP2O
19
6
VREF 14
20
38
36
48
47
OUTB1
OUTB1
OUTB2
OUTB2
43
41
OUTA2
OUTA2
32
31
IC9807
AMP
IC9301
AMP
FROM 2/2
FROM 2/2
FROM 2/2
3
4
A44
B59
B59
A49
B43
A43
TO
B1 BOARD
CN4000
CN8304 (2/4)
FE_SPDIF
FE_ADATA
FE_ABCK
HDMI_ABCK
A60 HDMI_ALRCK
B60 HDMI_ADATA
B60 HDMI_ADATA
FE_ALRCK
A54 DVI_LR_IN_L
A55 DVI_LR_IN_R
A55 DVI_LR_IN_R
DVI_L
DVI_R
DVI_L
DVI_R
5
7
IC9809
MUTE AMP
Q9818
AMP
Q9819
AMP
A9V
Q9803
SW
Q9810
SW
Q9601
SW
Q9820
SW
Q9811, 9813
DC DET
Q9812, 9814
DC DET
5
3
1
6
7
+
Q9815
SW
3
1
Q9806
Q9809
D9816
D9815
AMP_RST
SP_MUTE
PFC_DET
D9814
Q9816
REG.
11V
AP +B
Q9604
SW
Q9610
SW
IC9304
DSP
Q9608
SW
VIDEO/AUDIO SWITCH,
AUDIO AMP
Q9602
SW
A
M
B
C
N
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