Sony KV-G21MW3 Service Manual ▷ View online
– 21 –
KV-G21MW3/G21QW3
RM-869
Option Note
Item
HCO
EVG
SBL
PRD
–
–
–
VID
G21MW3
0
0
0
0
0
0
0
0
G21QW3
0
0
0
0
0
0
0
0
HCO
EHT Tracking Mode
1 = on V and E–W.
0 = only on V
0A (7)
EVG
Enable Vertical Guard
1 = enable.
0 = disable
0A (6)
SBL
Service Blanking
1 = active.
0 = inactive
0B (7)
PRD
Over-voltage Protection Detection
1 = enable.
0 = disable
0B (6)
VID
Video Ident Mode
1 = not for ø1-loop
0 = for ø1-loop
09 (7)
AV Input
0
0 no AV input model
0
1 1 AV input model
1
0 2 AV input model
1
1 2 AV input and RGB input model
No TOP (for teletext model)
1 = only FLOF available.
0 = both FLOF and TOP available
AV MUT
1 = AV multi is always muted if no signal input. 0 = not muted always
Other optional bits are effective if set to 1.
XTAL SEL 0
0 only 4.43 XTAL
0
1 only 3.58 XTAL
1
0 (not used)
1
1 both 4.43 and 3.58 XTAL
1 V-Curve (for monaural model)
1 = using common volume curve for every mode and every TV system
0 = another volume curve available for video mode and M system
HDEV
1 = High Deviation Mode switch available.
0 = not available
No NICAM 1 = NICAM search is disabled in any TV system,
0 = NICAM search operates
Other optional bits are effevctive if set to 1.
No Bal. (for AV stereo model)
1 = no balance in analog select items.
0 = balance included
Other optional bits are effective if set to 1.
Hotel TV mode should be switched with remote commander from STBY condition as below.
Hotel TV on : push “display”. “8”. “vol +” and “power” sequentially
Hotel TV off : push “display”. “8”. “vol –” and “power” sequentially
NOTE
• Note for Different Data
• Note for Different Data
Those are the standard data values written on the microprocessor. Therefore, the data values of
the modes are stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some
items.
the modes are stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some
items.
• 50 .............. 50 Hz data
• 60 .............. 60 Hz data
• Note for Different Data listed on the adjustment item table are reference values, therefore it is different for every model.
• 60 .............. 60 Hz data
• Note for Different Data listed on the adjustment item table are reference values, therefore it is different for every model.
Item No 13 VPX
Item
–
–
No Bal.
TV Out
Hotel
VM
D.B.F.B.
Thai Bil.
G21MW3
0
0
0
0
0
0
0
0
G21QW3
0
0
0
0
0
0
0
0
Item No. 41 OP2
Item
No NICAM
–
HDEV
1 V-Curve
XTAL SEL
SECAM
2nd Lang.
G21MW3
0
0
0
0
1
1
1
1
G21QW3
0
0
0
0
0
0
1
1
Item No. 40 OP1
Item
No TOP
AV input
AVMUT
B/G
I
D/K
M
G21MW3
0
0
1
0
1
1
1
1
G21QW3
0
0
1
0
1
0
0
0
Item No. 3F OP0
– 22 –
KV-G21MW3/G21QW3
RM-869
Operation Guide
How to set up new NVM (or initialize already written one)
(1) AC On
(2) Enter Service Mode – describing below how to enter
(2) Enter Service Mode – describing below how to enter
(3) Push the commander button “5” and “0” sequentially (only set initial data into RAM, but not write them into
NVM yet)
NVM yet)
(4) Push the commander button “2” and “0” sequentially (copy the data into all NVM area – all wide modes and
50/60Hz respectively)
50/60Hz respectively)
(5) Push the commander button “8” and “0” sequentially (initialize user data, select program 1 and exit Service
Mode)
Mode)
(6) Select TV system and execute Auto Preset
How to enter Service Mode
•
•
At power ON, push the commander button “test” and “TV ON” sequentially
•
At stand-by, push the commander button “display”, “5”, “vol +” and “power” sequently
How to exit Service Mode
Push the commander button “other ON” or power (AC) OFF
How to increment/decrement items and data
•
Items
:
push the commander button “1”/”4”
•
Data
:
push the commander button “3”/”6” (not write into NVM)
Other operations
•
Write data into NVM - push the commander button “mute” and “0” sequentially
•
Read data from NVM - push the commander button “7” and “0” sequentially
•
Copy 50Hz data into 60Hz area - push the commander button “display” and “0” sequentially
Modification Note
[V3.2] • “4 S-Mode” optional bit was added in “OP2” for 4 sound modes available for ME market.
[V3.3] • “FBT” was added for the switch of strict and plain FBT layer short C/M operation.
[V3.4] • “4 S-Mode” optional bit in “OP2” was removed for 4 modes available for all destinations.
[V3.6] • “TXH” is now available in teletext mode and “TXV” was deleted due to no need.
[3.9] • “No NICAM” optional bit in “OP1” was added to disable NICAM search in A2 stereo area.
[V4.2] • “HSF” and “HSZ” for RGB input (50/60Hz) were made to be independent.
[V4.4] • “FMM” was added for FM prescale of high deviation forced monaural in M system.
[V4.7] • Initial data were changed for some service items.
– 23 –
KV-G21MW3/G21QW3
RM-869
4-4. PICTURE DISTORTION ADJUSTMENT
Item Number 00 – 08
4-3. A BOARD ADJUSTMENT AFTER IC003
(MEMORY) REPLACEMENT
1. Enter to Service Mode.
2. Press commander buttons 5 and - (Data Initialize), and 2
and - (Data Copy) to initialize the data.
3. Call each item number, and check if the respective screen shows
the normal picture.
In case some items are not well-adjusted, give them fine
adjustment.
Write the data per each item number (
MUTING
+ -).
4. Select item numbers “3F” (OP0), “40” (OP1) and “41” (OP2)
and respectively set the bit per model with command buttons
3 and 6.
3 and 6.
5. Press commander buttons 8 and - (Test Normal) to return
to the data that was set on shipment from the factory.
(= Cancel Service Mode.)
00 HSF (H SHIFT)
01 HSZ (H SIZE)
02 PAP (PIN AMPLITUDE)
03 CNP (CORNER PIN)
04 TLT (TILT)
05 VSL (V SLOPE)
06 VAP (V AMPLITUDE)
07 SCR (S CORRECTION)
08 VSF (V SHIFT)
– 26 –
– 27 –
– 25 –
– 28 –
KV-G21MW3/G21QW3
RM-869
KV-G21MW3/G21QW3
RM-869
KV-G21MW3/G21QW3
RM-869
KV-G21MW3/G21QW3
RM-869
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM
5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS
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.
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
k
Ω
= 1000
Ω
, M
Ω
= 1000k
Ω
•
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 repair.
•
All variable and adjustable resistors have characteristic curve B
unless otherwise noted.
unless otherwise noted.
•
Readings are taken with a color-bar signal input.
no mark
no mark
: PAL
( )
: SECAM
[ ]
: NTSC 3.58
« »
: NTSC 4.43
•
Readings are taken with a 10 M
Ω
digital multimeter.
•
Voltage is dc with respect to ground unless otherwise noted.
•
Voltage variations may be noted due to normal production
tolerances.
tolerances.
•
All voltages are in V.
•
∗
: Cannot be measured.
•
Circled numbers are waveform reference.
•
: B + bus.
•
: B – bus.
•
: signal path.
÷
C
A
5-2. CIRCUIT BOARDS LOCATION
59
60
38
41
40
36
35
34
3
6
56
54
L/H
U/V
VC
KEY1
KEY2
RESET
EXTAL
XTAL
TIMER
RESP/
IICLK0
IIDAT0
NICAM
VC AMP
Q109
Q110
VC FILTER
Q108
BUFFER
AGC
TU
U/V
L/H
50
42
47
25
55
53
26
7
8
17
48
27
G
BRT ABL
HSYNC
HSYNC
IICLK1
IIDAT1
SIRCS
TSW0
TSW1
VPULSE
VSYNC
HDSW
IC001
Q303
G BUFFER
5
6
IC003 MEMORY
1
2
IC004 IR DET
+5V
S901
5
4
IC002 +5V REG
1
+9V
+5V
X101
Q902
LED
DRIVE
DRIVE
LED
Q903
+5V
TIMER
D901
NICAM
ST/BY
Q403, 404
FILTER
SWF401
Q402
IF BUFFER
IF
TU101 TUNER
L OUT
L IN
5
11
IC203
AUDIO OUT
Q1207, 1208
BUFFER
L MUTE
Q1265
L SP MUTE
Q210
VIDEO
L (MONO)
J1201
CN251
SP
J251
EARPHONE
MONITOR
OUT
A
TUNER, IF, Y/C JUNGLE,
SECAM DECODER, H/V OUT
SYSTEM CONTROLLER, MEMORY
AUDIO/VIDEO IN/OUT, POWER SUPPLY
SECAM DECODER, H/V OUT
SYSTEM CONTROLLER, MEMORY
AUDIO/VIDEO IN/OUT, POWER SUPPLY
18
19
20
21
48
49
54
41
34
35
IF IN
IF IN
AGC
SSCP/FBT
3.58
4.43/3.58
SCL
7
8 SDA
30
29
33
38
39
31
32
22
50
B-Y
R-Y
SECAM
CVBS OUT
BLK/STC
B-Y
R-Y
ABL
EHTX-RAY
IC300
Y/C JUNGLE
X443
4.43MHz
X358
3.58MHz
1
19
12
11
IC354 SECAM
12
11
5
14
16
IC351 1HDL
IF OUT
SIF IN
6
1
H PROT
Q030
Q801
H DRIVE
3
1
PIN CONT
IC801 (2/2)
Q821
PIN OUT
IC801 (1/2)
PIN CONT
7
5
6
IC551 V OUT
2
4
Q802
H OUT
L804
DUMPER
D801, 891
S801
H SENT
FV
HV
+135V
–13V
+15V
T851 FBT
Q561
X RAY
+135V
D561
D591
Q1513
V SAW
D1505
H+
H+
H–
H–
V–
V+
DY1
2
1
4
200V
1000V
H1
CN851
CN103
CN703
6
5
4
1
Q712
Q711
Q710
Q706
Q705
Q704
R DRIVE
G DRIVE
B DRIVE
R AMP
G AMP
B AMP
Q709
Q708
Q707
IK LIMIT
IK LIMIT
IK LIMIT
R
G
B
IK
12
11
10
5
J701
1 8
1
2
4
1000V
200V
H1
CN701
G2
RV701
C (RGB OUT)
T601 SRT
+18V
+11V
+B
1
2
DRIVE
LATCH
OVP
OSC
9
8
6
7
2
1
3
4
IC603 PHOTO COUPLER
1
2
IC602 ERROR AMP
IC601 REG SW
HDY
VDY
H+
H–
V+
V–
DY ASS'Y
IK
B
G
R
+7V
Q202
MUTE
MUTE 11
40
45
46
47
HOR OUT
EAST/WEST
VERT POS
VERT NEG
R
G
B
IK
2
4
1
7
9
10
5
6
11
13
17
16
15
14
13
11
3
4
5
8
7
T801
H2
V901
PICTURE TUBE
6
5
7
Q1201
VIDEO
L (MONO)
IN 1
VIDEO
(FRONT)
(REAR)
VIDEO
IN 1
L (MONO)
VIDEO
11 CVBS IN EXT
3
5
7
IC1211
IC1210
17 LUMA IN
BUFFER
CLK
DAT
B-Y
R-Y
S REF
SYNC
R-Y
B-Y
SYNC
R-Y
B-Y
IN
OUT
RESET
55 DE
FILTER
SYNC
SYNC
FILTER
SYNC
FILTER
KV-G21MW3
only
KV-G21MW3
only
CT45,CF45
Q405
Q407
CT60,CF60
CT60,CF60
Q410
CT65,CF65
CT65,CF65
Q413, 411
Q415, 412
Q418, 416
DK SW
I SW
M SW
7
8
2
1
3
4
A
B
DK
I
M
B/G
IC401
TV
SYSTEM
SELECTOR
B/G SW
Q417, 414
Q406, 408
Q409
CT55,CF55
CT55,CF55
SYNC
FILTER
13
CVBS IN INT
SYNC
FILTER
+
–
Q1209
BUFFER
AUDIO SW
SYSTEM CONTROLLER
KV-G21DK2
CH +
CH -
S902
VOL -
S904
VOL +
S903
TV/VIDEO
S905
S906
SEL
1
2
4
3
6
5
ONLY
BUFFER
Q1202
+9V
REG
+9V
IC521
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