DOWNLOAD Sony KV-BT21M40 Service Manual ↓ Size: 12.84 MB | Pages: 127 in PDF or view online for FREE

Model
KV-BT21M40
Pages
127
Size
12.84 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-bt21m40.pdf
Date

Sony KV-BT21M40 Service Manual ▷ View online

– 29 –
KV-BT21M40/BT21P52/BT21P52/L/BT21P52/N
RM-W101
WIDE MODE (50Hz)
(V-Compression Adjustment)
1. Input SPCB signal.
2. Adjust condition change to WIDE MODE : ON
3. Copy (Item from normal mode 50Hz) all Normal
Mode adjusted data.
NORMAL MODE (60Hz)
1. Input 525/60Hz signal.
2. They can copy 50Hz first.
("COPY" under GEOM is set to 
1
, then [MUTE] + 
-
)
3. Using the 
1
 and 
4
 button, select category GEO
(Service Mode).
4. Raise/lower data using the 
3
 and 
6
 buttons to
obtain optimum image.
GEOM :
000
HPOS
Horizontal Shift (HS)
001
HPAR
Horizontal Parallelogram
002
HBOW
Horizontal Bow
003
VLIN
Vertical Linearity
004
VSCR
Vertical Scroll
005
HSIZ
EW Width (EW)
006
EWPW
EW Parabola/Width (PW)
007
UCOP
EW Upper Corner Parabola
008
LCOP
EW Lower Corner Parabola
009
EWTZ
EW Trapezium
010
VSLP
Vertical Slope (VS)
011
VSIZ
Vertical Amplitude
012
SCOR
S-Correction (SC)
013
VPOS
Vertical Shift (VSH)
014
HBL
RGB Blanking Mode
015
WBF
Timing of Wide Blanking (WBF)
016
WBR
Timing of Wide Blanking (WBR)
017
SBL
Service Blanking
018
COPY
Copy the GEO data to all
50/60Hz NVM area
WIDE MODE (60Hz)
(V-Compression Adjustment)
1. Input mono scope signal.
2. Adjust condition change to WIDE MODE : ON
3. "COPY" is set to 
1
, then [MUTE] + 
-
3-5.
DRIVE ADJUSTMENT
1. Input signal
70% Color Bar (USA)
100% Color Bar (Other)
2. Make sure only red is active.
3. Set following condition :-
PICTURE 100%, COLOR 0%, Other 50%
4. Select SADJ00 "PMAX" with 
1
 and 
4
 then adjust
until voltage in R out X gain 
[recorded]
 = SPEC
5. Then press [MUTING] 
-
 to write data.
X
±2VDC (R Cathode on C or CV board)
6. Set VIDP 36 BLBG back to 00.
Model
14”
21”
GA
83.0
88.0 - Non VM Models
99.0 - VM Models
– 30 –
KV-BT21M40/BT21P52/BT21P52/L/BT21P52/N
RM-W101
3-6.
PICTURE DISTORTION ADJUSTMENT
H. CENTER ADJUSTMENT (HPOS)
1. Input Monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select the HPOS item with 
1
 and 
4
.
4. Adjust the value of HPOS with 
3
 and 
6
 for the best
vertical center.
5. Press [MUTING] then 
-
 to save into the memory.
H. SIZE ADJUSTMENT (HSIZ)
1. Input NTSC Monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select HSIZ with 
1
 and 
4
.
4. Adjust with 
3
 and 
6
 for the best horizontal size.
5. Press [MUTING] then 
-
 to save into the memory.
V. SIZE ADJUSTMENT (VSIZ)
1. Input Monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select the VSIZ item with 
1
 and 
4
.
4. Adjust value of VPOS with 
3
 and 
6
 for the best
vertical center.
5. Press [MUTING] then 
-
 to save into the memory.
V. CENTER ADJUSTMENT (VPOS)
1. Input Monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select the VPOS item with 
1
 and 
4
.
4. Adjust value of VPOS with 
3
 and 
6
 for the best
vertical center.
5. Press [MUTING] then 
-
 to save into the memory.
V. LINEARITY (VLIN), V. CORRECTION (SCOR), PIN
AMP (EWPW), AND HORIZONTAL TRAPEZOID
(EWTZ) ADJUSTMENTS
1. Input Monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select VLIN, SCOR, EWPW, and EWTZ with 
1
 and
4
.
4. Adjust with 
3
 and 
6
 for the best horizontal size.
5. Press [MUTING] then 
-
 to save into the memory.
V. ANGLE (HPAR), H. BOW (HBOW), UPPER PIN
(UCOP) AND LOW PIN (LCOP) ADJUSTMENTS
1. Input Monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select HPAR, HBOW, UCOP, and LCOP with 
1
 and
4
.
4. Adjust with 
3
 and 
6
 for the best picture.
5. Press [MUTING] then 
-
 to save into the memory.
HORIZONTAL TRAPEZOID (EWTZ)
PIN AMP (EWPW)
V CORRECTION (SCOR)
V LINEARITY (VLIN)
UPPER PIN (UCOP)
LOW PIN (LCOP)
V ANGLE (HPAR)
V BOW (HBOW)
– 31 –
KV
-BT21M40/BT21P52/BT21P52/L/BT21P52/N
RM-W101
SECTION 4
DIA
GRAMS
4-1.
BLOCK DIA
GRAM
VIF&SIF SAW
MAIN
Power
Supply
FSS TUNER
AGCin
12C
Video
L(Mono)
Video
L(Mono)
CV/YC
L(Mono)
CV/YC
L(Mono)
CV/YC
L(Mono)
G/Y
B/P
B
R/P
R
L
Fbl(RGBin)
24.576MHz
DVD/RGB
AV2
AV3
AV1
Mon Out
Audio Amp
TV 
out
Mon
out
AV1
in
AV2
in
AV3
in
RGB/
DVD
in
5V
30V
IF
24-5.VIF1~2
115. DGC Relay
STBY
3.3V
AC in ~
110-220V
CISPR/
PFC
3.3V
RESET
3.3V
5V
8V
3.3/5V
Relay
8V
AUDIO VCC
HV
DGC
+/-15V
Hout
FBT
L
1/2ch
Audio Amp
ATT
VAR
NVM
Pin out
H-drive
H-out
Rot. cct
V-out
VM
RGB Amp
feedback
3W
Mono
3W
R
L,R
HP
mute
EHT, ABL
Hp
1k
EW, Hd
V+, V-
RGB
+B
On/Off
stdby
Device 12C
12C
SIRCS
Key buttons
PLL
I/O Port
VIF & SIF
POWER
Color
Decoder
YUV
Processor
Jungle
RGB
FM MONO Dem
Volume control
ONE CHIP
Micro
Text
CC & V-chip
11.XTALOUT
10.XTALIN
74~76.YUVout
70-72.YUVin
119.
 KEY IN
126.INT2
98, 99.
 SCL1, SD
A1
108, 109.
 SCL0, SD
A0
102.
 BINT
122~3.
 RED/GREEN LED
77.SCARTFBL
78~80.RGB3
34DIRIN
R-Y/R,Y/G, B-Y/B IN
31.AGCout
43.IFVO/IF-
MON-OUT
62.SCARTHPL
48.MON-OUT
36.OutL
85~87
RGBout
84.lk
65.VM
23. VD+
22. VD-
112.ROT CTRL
113. ROT SW
21.EWD
67.Hout
66.AFC
32.EHTO
83.ABL
60.LSL
106. AUDIO MUTE
105. AUDIO STDBY
58.CVBS1/Y1
59.C3
56.InL1
55.CVBS3
53.InL3
I/O Port
51.CVBS2/Y2
52.C2
49.InL2
B-INT
LED
+B line
30V
L
– 32 –
KV-BT21M40/BT21P52/BT21P52/L/BT21P52/N
RM-W101
4-2.
CIRCUIT BOARDS LOCATION
A Board
C Board
4-3.
SCHEMATIC DIAGRAM
Note:
All capacitors are in 
µF unless otherwise noted.
All electrolytic capacitors are rated at 50V unless otherwise
noted.
All resistors are in ohms.
k
Ω = 1000Ω, MΩ = 1000kΩ
Indication of resistance which does not have rating
electrical power is as follows.
Pitch: 5 mm
Rating electrical power 1/4W (CHIP: 1/10W)
: nonflammable resistor.
¢
: internal component.
: panel designation or adjustment for repair.
All variable and adjustable resistors have characteristic
curve B unless otherwise noted.
Readings are taken with a color-bar signal input.
no mark
: Common
(            )
: PAL
[            ]
: NTSC 3.58
Readings are taken with a 10 M
 digital multimeter.
Voltage are dc with respect to ground unless otherwise
noted.
Voltage variations may be noted due to normal
production tolerances.
All voltage are in Volt.
: Cannot be measured.
Circled numbers are waveform references.
: B +bus.
: B –bus.
 
 
k
: signal path.
Note: The reference number which starts with Wxxx
(eg: W003) indicates a wire to wire connection.
Note: Components marked as XX are not fitted on this
model.
Reference information
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 
! are critical for safety. Replace only
with part number specified.
Note: “A” board schematic diagram is divided into 6 blocks.
Each block is named by its function and block
“alphabet”. eg: Processor (Block A)
Joint connection between boards can be identified
using the block alphabet followed by sequence
numbering.
eg: -<HOUT-DEFL (A10) To D11
Meaning: Block A joint A10 is connected to Block D
joint D11
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