DOWNLOAD Sony KV-HG21M50 (serv.man2) Service Manual ↓ Size: 7.44 MB | Pages: 69 in PDF or view online for FREE

Model
KV-HG21M50 (serv.man2)
Pages
69
Size
7.44 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-hg21m50-sm2.pdf
Date

Sony KV-HG21M50 (serv.man2) Service Manual ▷ View online

– 33 –
KV-HG21M50/M53/M80C/M86
   RM-GA002
Item No.
Function
Illustration
GEOM 013
Vertical Shift
(VPOS)
GEOM 011
Vertical Amplitude
(VSIZ)
Note: Adjust VSIZ to
12.4
±
(SPCB)
11.3
±
(PAL Monoscope)
11.5
±
(NTSC Monoscope)
GEOM 000
Horizontal Shift
(HPOS)
GEOM 009
EW Trapezoid
(EWTZ)
GEOM 005
EW Width (EW)
(HSIZ)
Note: Adjust HSIZ to
16.4
±
(SPCB)
14.6
±
(PAL Monoscope)
15.3
±
(NTSC Monoscope)
GEOM 002
Horizontal Bow
(HBOW)
GEOM 006
EW Parabola/Width
(EWPW)
(PW)
GEOM 007
EW Upper Corner
(UCOP)
Parabola
GEOM 008
EW Lower Corner
(LCOP)
Parabola
GEOM 001
Horizontal
(HPAR)
Parallelogram
GEOM 012
S-Correction(SC)
(SCOR)
GEOM 003
Vertical Linearity
(VLIN)
GEOM 004
Vertical Scroll
(VSCR)
3-4.
GEOMETRY ADJUSTMENT
Geometry adjustment must be done for both color systems
PAL and NTSC.
3-4-1. GENERAL SETTING
a) Input Monoscope or Special Color Bar(SPCB) signal
using a pattern generator.
b) Set to Service Mode.
c) Select Category/Functionally Name (as in the service
list) using 1 and 4 button on the remote commander.
Eg. GEOM
d) Raise or Lower the data value using 3 and 6 button.
e) Press [MUTING] 
t - to save the data into memory.
Note 1: Geometry Adjustment must be performed for 4 different
modes: PAL 50Hz NORMAL MODE, PAL 50Hz WIDE
MODE, NTSC 60Hz NORMAL MODE, NTSC 60Hz
WIDE MODE.
3-4-2.  PAL 50Hz NORMAL MODE
a) Input PAL signal 50Hz in the Service Mode.
b) Set Wide Mode to "OFF".
c) Perform the below adjustments using the "GENERAL
SETTING" sequence (Refer 3-4-1)
d) Once adjustment is done for PAL 50Hz NORMAL
MODE,set Wide mode to "ON", and copy all PAL 50Hz
NORMAL MODE adjusted data to PAL 50Hz WIDE
MODE except VSCR.
e) Now, perform adjustment for NTSC 60Hz NORMAL
MODE.
f)
Set Wide mode to "OFF".
g) Perform adjustment items listed in the above table using
the "GENERAL SETTING sequence (refer 3-4-1).
h) Once adjustment is completed,set Wide mode to "ON"
and copy all NTSC 60Hz NORMAL MODE adjusted data
to NTSC 60Hz WIDE MODE except VSCR.
i)
Upon completing adjustment for all modes,reconfirm
VSIZ and VPOS.
– 34 –
KV-HG21M50/M53/M80C/M86
   RM-GA002
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM
VIF SA
W
SIF SA
W
MAIN
Power
Supply
TUNER
AGCin
12C
TV
L(Mono)
V
ideo
L(Mono)
CV/YC
L(Mono)
R
CV/YC
L(Mono)
R
R
R
G/Y
B/P
B
R/P
R
L
R
Fbl(RGBin)
24.576MHz
DVD/RGB
AV
3
AV
2
AV
1
MON OUT
Audio Amp
Buf
fer
TV  out
Radio
BPF
Mon out
AV
1
in
AV
2
in
CV/YC
L(Mono)
AV
3
IN
RGB/ DVD
in
5V
30V
IF
24-5.VIFIN1~2
29~30.SIF1~2
115.DGC RELA
Y
 
114.STBY
 SW
STBY
3.3V
AC in ~
1
10-220V
CISPR/
PFC
3.3V
RESET
3.3V
5V
8V
3.3/5V
Relay
8V
AUDIO VCC
HV
DGC
+/-15V
Hout
FBT
L
3ch
MIXER
Audio Amp
AT
T
VA
R
NVM
Pin out
H-drive
H-out
Rot. cct
V
-out
VM
RGB Amp
feedback
4W
R
3D
4W
12W
L,R
I
HP
mute
EHT
, ABL
Hp
L
R
8V
1k
EW
, Hd
L, R
V+, V
-
RGB
+B
On/Of
f
stdby
Device 12C
12C
SIRCS
Key buttons
PLL
I/O Port
I/O Port
VIF & SIF
POWER
Color
Decoder
YUV
Processor
Jungle
RGB
DAC
Stereo,
DAP
A
D
C
ONE CHIP
Micro
T
ext
CC & V
-chip
11.Xtalout
10.Xtalin
74~76.YUV
out
70-72.VUY
in
119.KEY
116.DI-JP/MODE1-EU
103.DI-JP/MODE2-EU/
MON SW-MONO
126.AGC-MUTE
98, 99. SCL1,SDA1
108, 109.  SCL0,SDA0 
102.BINT
122~3.RED~GREEN LED
77.SCAR
T FBL
78~80.RGB3
34,35 InLs,R5 
51.CY/Y4
52.C2
49-50 InL,R4
120.P3.3(S2)
31.AGCout
33.A
VL/2SIF
120.S2
44.Intco-IF
43.IFVO
62,63.HPL, R
48.MON-OUT
36,37.OutL, R
11
1.S1/VC(GA)
85~87
RGBout
84.lk
65.VM
23. VD+
22. VD-
112.ROT
 CTRL
113.ROT
 SW
21.EWD
67.Hout
66.AFC 
32.EHT
O
83.ABL
60,61
LSL,R
106.AUDIO MUTE
105.AUDIO ST
ANDBY
58.CVB51/Y1
59,C1 
56, 57InL1,InR1
55.CV/Y2
53,54.InL,R2
70 CX
B-INT
LED
+B line
30V
R
LNA
 cct
– 35 –
KV-HG21M50/M53/M80C/M86
   RM-GA002
4-2.
CIRCUIT BOARDS LOCATION
4-3.
SCHEMATIC DIAGRAM INFORMATION
Note:
All capacitors are in µF unless otherwise noted.
All electrolytic capacitors are rated at 50V unless otherwise
noted.
All resistors are in ohms.
kΩ = 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.
: fusible 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 7 blocks.
Each block is named by its function and block “number”.
eg: Processor (Block 001)
Joint connection between boards can be identified using
the block number followed by the grid's guide.
eg: -<PWR-OFF MUTE
002 : 4E
Meaning: Block 001 joint "PWR-OFF MUTE" is connected
to Block 002 joint "PWR-OFF MUTE" located at grid 4E.
1
 CV board
3
 J Board (KV-HG21M53)
2
 A Board
4
 P Board (KV-HG21M86)
KV-HG21M50/M53/M80C/M86
   RM-GA002
KV-HG21M50/M53/M80C/M86
   RM-GA002
4-3-1. A Board — (Block 001)
– 36 –
– 37 –
SCHEMATIC DIAGRAM ATTACHED AT PAGE 80 ~ 81.  PLEASE CLICK 
HERE TO LINK TO THE PAGE.
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