Sony KV-XA21M83 Service Manual ▷ View online
– 49 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
4-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT
1. Select Video.
2. Input a PAL color-bar.
3. Set to the following condition:
2. Input a PAL color-bar.
3. Set to the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
4. Connect an oscilloscope to pin 1 (B OUT) of CN305,
A board.
5. Set to Service Mode and select SAJ ‘SCL’ with [1] and [4]
of the commander then adjust to VB2=VB3=VB4 with [3]
and [6].
and [6].
6. Press [MUTING]
→ [0] of the commander to write the data.
7. Adjust SAJ ‘SCL’ as step 3 to 5 when receiving NTSC
color-bar.
8. XA21" no wide-mode function.
SUB HUE ADJUSTMENT
1. Select Video 1.
2. Input a NTSC 3.58 color-bar, video into Video 1.
3. Set the following condition:
2. Input a NTSC 3.58 color-bar, video into Video 1.
3. Set the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
4. Connect an oscilloscope to pin 1 (B OUT) of CN305, A
board.
5. Select SAJ O1 "SHU" with 1 and 4 of the commander by
setting to Service Mode and adjust to
VB1=VB2=VB3=VB4 with 3 and 6.
VB1=VB2=VB3=VB4 with 3 and 6.
6. Press [MUTING]
→ [0] of the commander to write the data.
7. Adjust SAJ O1 "SHU" as step 3 to 6 when receiving TV
mode.
4-4. DEFLECTION ADJUSTMENT
NORMAL MODE (50Hz)
1. Set to Service Mode.
2. Using the [1] and [4] button, select category GEO (Service
2. Using the [1] and [4] button, select category GEO (Service
Mode).
3. Raise/lower the data using the [3] and [6] buttons.
Select and adjust the following items to obtain optimum
image.
image.
Service Item
GEO : 00
HPS
H POSITION
01
HSZ
H SIZE
02
PAP
PIN AMP
03
TLT
TILT
04
VPS
V POSITION
05
VSZ
V SIZE
06
SCO
S CORRECTION
07
VLN
V LINEARITY
08
BOW AFC BOW
09
AGL
AFC ANGLE
0A
UPN
UPPER CORNER PIN
0B
LPN
LOWER CORNER PIN
NORMAL MODE (60Hz)
11. Input 525/60Hz signal.
12. Using the [1] and [4] buttons select category GEO (Service
12. Using the [1] and [4] buttons select category GEO (Service
Mode).
13. Select and adjust the following items to obtain obtimum
image.
Raise/lower the data with the [3] and [6] buttons.
Raise/lower the data with the [3] and [6] buttons.
Service Item
GEO : 00
HPS
H POSITION
01
HSZ
H SIZE
02
PAP
PIN AMP
03
TLT
TILT
04
VPS
V POSITION
05
VSZ
V SIZE
06
SCO
S CORRECTION
07
VLN
V LINEARITY
08
BOW AFC BOW
09
AGL
AFC ANGLE
0A
UPN
UPPER CORNER PIN
0B
LPN
LOWER CORNER PIN
Note:
For Deflection Adjustment, set PICTURE MODE to "SOFT".
4-5. A BOARD ADJUSTMENT AFTER IC003
(MEMORY) REPLACEMENT
1. Enter to Service Mode.
2. Press commander buttons [5] and [0] (Data Initialize), and
2. Press commander buttons [5] and [0] (Data Initialize), and
[2] and [0] (Data Copy) to initialize the data.
3. Call each item number and check if the respective screen
shows the normal picture.
In cases where items are not well adjusted, rectify the fine
adjustment.
Write the data per each item number ([MUTING] + [0]).
In cases where items are not well adjusted, rectify the fine
adjustment.
Write the data per each item number ([MUTING] + [0]).
4. Select item numbers “OPB00” (OP1), “OPB01” (OP2),
"OPB 02" (OP3) and "OPB 03" (OP4) respectively set the
bit per model with command buttons [3] and [6].
bit per model with command buttons [3] and [6].
5. Press commander buttons [8] and [0] (Test Normal) to
return to the data that was set on the shipment from the
factory.
(This will also cancel Service Mode.)
factory.
(This will also cancel Service Mode.)
VB1 VB2
VB3 VB4
VB1 = VB2 = VB3 = VB4
VB1 VB2
VB3 VB4
VB2 = VB3 = VB4
– 50 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
4-6. PICTURE DISTORTION ADJUSTMENT (1)
Item Number 00 – 0B
GEO 1
HSZ (H SIZE)
GEO 3
TLT (TRAPEZIUM)
GEO 0A UPN (UPPER CORNER PIN)
GEO 0B LPN (LOWER CORNER PIN)
GEO 5
VSZ (V SIZE)
GEO 0
HPS (H POSITION)
GEO 9
AGL (AFC.ANGLE)
GEO 8
BOW (AFC.BOW)
GEO 2
PAP (PIN AMP)
GEO 4
VPS (V POSITION)
GEO 7
VLN (V LINEARITY)
GEO 6
SCO (VERTICAL S-Correction)
– 51 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
– 52 –
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM
YC JUNGLE
IC301
CXA2159S
CXA2159S
<slave:88H>
INTERNAL NTSC
COMB FILTER
IC302
TDA9183T
COMB FILTER
IC302
TDA9183T
MONITOR
OUT
OUT
TV V in
TV L in
TV R in
TV V in
Mon out
V1 out
COMB Y in
COMB C in
V1 V in
43
6
9
7
43
V1 V in
V1 L in
V1 R in
V2 R in
V2 V in
V2 V in
4
V2 L in
L out 2
R out 2
JACK BLOCK
VIDEO IN 1
AUDIO
PROSESSOR
PROSESSOR
IC203
TDA7442D013TR
<slave: 80H>
AUDIO OUT
IC201
TA8248K
TA8248K
RED OUT
GREEN OUT
BLUE OUT
IC700
TDA6107Q
TDA6107Q
VM DRIVE
25963
IQ5965
25963
IQ5965
SP ASSY
CRT SOCKET
CRT
A51LPT70X
A51LPT70X
DY
Y21RSA-S
Y21RSA-S
B out
G out
R out
VM out
VM in
R out
G out
B out
24
25
26
23
21
20
13
15
16
IK in
H. DRIVE
H. PULSE
E/W
VD+
VD-
H-OUT
Q511
2SD2578-CA
Q511
2SD2578-CA
V-OUT
IC503
TDA8172
IC503
TDA8172
HDT
T501
T501
H-DRIVE
Q506
2SD774-34
Q506
2SD774-34
PIN-CONT
IC502
NJM2903M
IC502
NJM2903M
PIN-OUT
Q505
IRF614-LF
Q505
IRF614-LF
PMC
L509
L509
HLC
L510
L510
FBT
T503
NX-1748
T503
NX-1748
+B
Audio Front Vcc
+9V
11V
7V
+5V
5V REG & RESET
IC002 MM1319AF
9V REC IC603
5V REC IC604
STB TRANS
T604
SRT
T603
SYSTEM
Ucom
IC001
CXP86449
CXP86449
RECEIVER
SBX3081-01(30)
IC901
IC901
SIRCS
R G B
BLK
R G B
BLK
I2L
MEMORY
IC003
M24C08-BN6
M24C08-BN6
28 29 30 27
F
(CISPR)
STB SW TR
Q605
2SK2845
2SK2845
POWER IC
IC601
STR-F6654
STR-F6654
LINE FILTER
T601
LINE
FILTER
FILTER
T4602
THP
THP600
AC CORD
DGC
MAIN. TUVIF with
STEREO DECODER
(MSP3415)
STEREO DECODER
(MSP3415)
<slave: 84H>
TU101
BTF-LG433
BTF-WG411
BTF-WG441
BTF-LG433
BTF-WG411
BTF-WG441
J401
6P
VIDEO IN 2
(FRONT)
(FRONT)
J902
3P
A
(System Controller, Y/C jungle, Deflection Tuvif,
Front Amp, Power Supply Audio Amp/Tone Controller)
C1
(Video Amp NS Rotation VM)
H4
(Headphone
panel)
panel)
K2
(Woofer out)
J3
(Woofer terminal)
N/S DRIVE
IC1800
IC1800
SP ASSY
AUDIO OUT
DBFB(3D)
AUDIO OUT
IC4200
TDA2009A
TDA2009A
IC201
TA8200AH
TA8200AH
Q4206
Text Recoder with u-com
IC801
SAA5261
<Salve : 58H>
IC801
SAA5261
<Salve : 58H>
*V1 (Teletext)
– 53 –
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
KV-XA21M83/XA21M93/XA51M61/XA21P80
RM-952
KV-XA21N93
RM-915
– 54 –
5-2. CIRCUIT BOARDS LOCATION
A
V1
(KV-XA51M61 only)
F
C1
K2
(except KV-XA21P80/XA51M61)
H4
(except KV-XA21P80/XA51M61)
J3
(except KV-XA21P80/XA51M61)
5-3. SCHEMATIC DIAGRAM
Note:
•
•
All capacitors are in µF unless otherwise noted.
•
All electrolytic capacitors are rated at 50V unless otherwise
noted.
noted.
•
All resistors are in ohms.
k
k
Ω = 1000Ω, MΩ = 1000kΩ
•
Indication of resistance which does not have rating electrical
power is as follows.
power is as follows.
Pitch: 5 mm
Rating electrical power 1/4W (CHIP: 1/10W)
Rating electrical power 1/4W (CHIP: 1/10W)
•
: nonflammable resistor.
•
¢
: internal component.
•
: panel designation or adjustment for rrepair.
•
All variable and adjustable resistors have characteristic curve
B unless otherwise noted.
B unless otherwise noted.
•
Redings are taken with a color-bar signal input.
no mark
no mark
: Common
•
underline : PAL
(
(
)
: SECAM
[
]
: NTSC 3.58
<<
>> : NTSC 4.43
•
Readings are taken with a 10 M digital m ultimeter.
•
Voltage are dc with respect to ground unless otherwise
noted.
noted.
•
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
•
All voltage are in V.
•
✽
: Cannot be measured.
•
Circled numbers are waveform references.
•
: B +bus.
•
: B –bus.
•
÷
: signal path.
Reference information
RESISTOR
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NONFLAMMABLE CARBON
: FUSE
NONFLAMMABLE FUSIBLE
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
: RW
NONFLAMMABLE WIREWOUND
:
✽
ADJUSTMENT RESISTOR
COIL
: LF-8L
MICRO INDUCTOR
CAPACITOR
: TA
TANTALUM
: PS
STYROL
: PP
POLYPROPYLENE
: PT
MYLAR
: MPS
METALIZED POLYESTER
: MPP
METALIZED POLYPROPYLENE
: ALB
BIPOLAR
: ALT
HIGH TEMPERATURE
: ALR
HIGH RIPPLE
Note:
The component identified by shading and
mark
mark
! are critical for safety. Replace only
with part number specified.
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