Sony KV-TF21M80 (serv.man3) Service Manual ▷ View online
– 33 –
KV-TF21M80
RM-952
SUB HUE ADJUSTMENT
1. Select Video 1.
2. Input a NTSC 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 1 ‘SHU’ with 1 and 4 of the commander by set-
ting to Service Mode and adjust to VB1=VB2=VB3=VB4 with
3 and 6.
3 and 6.
4-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT
1. Input a PAL color-bar.
2. Set to the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
3. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
4. Set to Service Mode and select SAJ 3 ‘SCL’ with 1 and 4 of
the commander then adjust to VB2=VB3=VB4 with 3 and
6.
6.
5. Press
[MUTING]
→ - of the commander to write the data.
6. Adjust SAJ 3 ‘SCL’ as step 2 to 5 when receiving NTSC color-
bar.
6. Press
[MUTING]
→ - of the commander to write the data.
BELL FILTER ADJUSTMENT
1. Input SECAM color-bar signal.
2. Connect the dual-trace oscilloscope to the pin 9 (R-Y) of
CN303 (not mounted).
3. Adjust SERVICE MODE, ITEMS ‘SBF’ as shown below.
4-4. A BOARD ADJUSTMENT AFTER IC003
(MEMORY) REPLACEMENT
When replacing IC003 (MEMONY), be sure to change IC001
(µ-COM) to the following new IC at the same time.
IC001 (µ-CON) : CXP86449-622S
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 cases where items are not well adjusted, rectify the items
with fine adjustment.
Write the data per each item number (
[MUTING]
+-).
4. Select item numbers “OPB0” (OP1), “OPB1” (OP2) and
“OPB2” (OP3) and respectively set the bit per model with
command buttons 3 and 6.
5. Press commander buttons 8 and - (Test Normal) to return
to the data that was set on the shipment from the factory.
(This will also cancel Service Mode.)
VB1 VB2
VB3 VB4
VB2 = VB3 = VB4
VB1 VB2
VB3 VB4
VB1 = VB2 = VB3 = VB4
– 34 –
KV-TF21M80
RM-952
4-5. PICTURE DISTORTION ADJUSTMENT
Item Number 00 – 0B
GEO 0
HPS (H POSITION)
GEO 1
HSZ (H SIZE)
GEO 2
PAP (PIN AMP)
GEO 5
VSZ (V SIZE)
GEO 7
VLN (V LINEARITY)
GEO 4
VPS (V POSITION)
GEO 6
SCO (VERTICAL S-Correction)
GEO 8
BOW (AFC.BOW)
GEO 9
AGL (AFC.ANGLE)
GEO 3
TLT (TRAPEZIUM)
GEO 0A UCP (UPPER CORNER PIN)
GEO 0B LCP (LOWER CORNER PIN)
– 38 –
– 39 –
– 37 –
KV-TF21M80
RM-952
KV-TF21M80
RM-952
KV-TF21M80
RM-952
SECTION 5
DIAGRAM
5-1. BLOCK DIAGRAM
YC JUNGLE
IC301
CXA2139S
CXA2139S
<slave:88H>
MONITOR
OUT
OUT
TV V in
TV L in
TV R in
TV V in
V1 V in
43
12
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
TDA7429S
<slave: 80H>
AUDIO OUT
IC201
TA8248K
TA8248K
RED OUT
GREEN OUT
BLUE OUT
STV5112
Q704-712
Q704-712
C3
SP ASSY
R out
CRT SOCKET
G out
CRT
A51LPT70X
A51LPT70X
DY
Y21RSA-S
Y21RSA-S
B out
R out
V out
U out
Y out
V in
U in
Y in
G out
B out
22
23
24
21
19
18
11
13
14
IK in
H. DRIVE
H. PULSE
E/W
VD+
VD-
H-OUT
Q511
2SD2578
Q511
2SD2578
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
Q505
IRF614
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
Additional
Color Matrix
Color Matrix
SYSTEM
Ucom
IC001
CXP86449
CXP86449
RECEIVER
SBX1981-51
IC901
IC901
SIRCS
R G B
BLK
I2L
MEMORY
IC003
ST24C08FB6
ST24C08FB6
32 31 30
37 39 40
28 29 30 31
F
STB SW TR
Q605
2SK2845
2SK2845
POWER IC
IC601
STR-F6654
STR-F6654
LINE FILTER
T601
LINE
FILTER
FILTER
T4601
THP
THP600
AC CORD
DGC
MAIN. TUVIF
TU101
BTF-LG433(I)
TU101
BTF-LG433(I)
<slave: C0H>
J401
6P
VIDEO IN 2
(FRONT)
(FRONT)
J902
3P
– 41 –
– 42 –
– 40 –
KV-TF21M80
RM-952
KV-TF21M80
RM-952
KV-TF21M80
RM-952
5-3. CIRCUIT BOARDS LOCATION
5-2. FRAME SCHEMATIC DIAGARM
CN604
CN703
DY1
DGC
B
9V
IK
1
5
6
1
E
CN704
PICTURE
SPEAKER
TUBE
1
2
3
4
5
6
H+
H+
H-
H-
V-
V+
(POWER SUPPLY, HV, MICON, Y/C JUNGLE)
1
2
3
DGC
NC
DGC
2
1
AC IN
AC IN
A
DY ASSY
N/S COIL
+
N/S COIL
-
3
1
NS COIL
CN1802
2N
C
CN702
1
G
2
FBT
4
3
GND
R
H1
3
2
1
E
200V
CN701
2
G
9V
IK
GND
R
G
B
6
5
4
3
2
1
CN305
1
2
3
H1
GND
200V
CN505
CN601
1
2
PHL
SPL
CN901
3
4
SP
GND
SP
GND
5
6
SP
R
PH R
CRT
CN4602
AC OUT
AC OUT
2
1
AC IN
AC IN
2
1
CN4601
(CISPR)
F
1
GND
CN4603
CN104
GND
1
C3
(RGB OUT)
*
A
F
C3
5-4. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS
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 are dc with respect to ground unless otherwise
noted.
noted.
•
Voltage variations may be noted due to normal production
tolerances.
tolerances.
•
All voltages are in V.
•
: Cannot be measured.
•
Circled numbers are waveform references.
•
: B + bus.
•
: B – bus.
•
: signal path.
Note: The component identified by shading and
mark
!
!
!
!
!
are critical for safety. Replace only with
part number specified.
✻
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
÷
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