Sony KV-21FK120 Service Manual ▷ View online
22
KV-21FK120
KV-21FK120
Q590
T505
602
R505
C624
C505
C506
D598
C582
L588
Q522
IC565
IC545
IC561
L513
L511
HS522
C525
L525
D526
C513
D006
L516
C514
D545
D566
L582
C526
C511
C512
C618
CN515
R574
R528
R529
R537
R557
R549
R533
R534
C548
C529
Q402
C530
C540
R526
R593
R506
R570
R569
R568
R547
R502
R589
R411
R408
R594
R583
R546
C561
C212
C451
C571
D568
D630
D569
D528
D567
R540
R541
R566
D562
R532
R511
C640
C610
604
602
C595
C545
C547
R504
C544
C562
C528
C527
0
R581
C504
C502
D601
L515
R510
R588
R515
D624
Q505
Q506
R512
R514
R901
R548
R902
C625
T511
PS401
L371
L370
JR12
JR505
C651
R503
R591
C590
R609
C597
T585
R437
R598
Q521
R575
C510
D506
E
B
6
4
1
3
HDY-
HDY-
HDY+
HDY+
VDY-
VDY+
H-OUT
N/C
200V
GND
HEATER
-13V
GND
+13V
N/C
ABL
GND
GND
HDT
V.OUT
H-OUT
H-OUT
1
2
6
7
H.PROT
1
6
135V
TP21
TP28
TP29
TP27
TP19
TP20
TP17
TP16
TP33
TP30
TP24
TP25
E
B
TP23
TP31
TP22
C
E
B
FBT
E
B
( )
FIGURE 1
TP23
X R565
C566
+
-
DIGITAL
MULTIMETER
MULTIMETER
+
-
POWER
SUPPLY
SUPPLY
1SS119
AMMETER
3mA dc range
3mA dc range
+
-
A
23
KV-21FK120
KV-21FK120
Electrical Adjustments by Remote Commander
Use the Remote Commander
(RM-Y194)
to
perform the circuit adjustments in this section.
Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator
SECTION 4: CIRCUIT ADJUSTMENTS
4-2. ACCESSING SERVICE ADJUSTMENT
MODE
Service Mode Procedure
1. Standby mode (power off).
2. Press DISPLAY
Channel
5
Sound
Volume
+
POWER on the Remote Commander (press each button within a
second).
NOTE: Setting the set in VIDEO mode will make it easier to read the
service data.
service data.
Service Adjustment Mode On
The CRT displays the fi rst Category in the Service list.
Category
Display
Item
Display
Data
Signal
Type
Type
Channel
Type
Type
NTSC
VIDEO1
DEF
M655E2AMF-107FP
S 3.OD
HSIZ
1 : 51
NVM:OK
1. On the Remote Commander, press 2 or 5 to select the Category.
2. Press 1 or 4 to select the Item.
3. Press 3 or 6 to change the Data.
4. Press MUTING then ENT to write into the memory.
Category
Display
Item
Display
Data
Signal
Type
Type
Channel
Type
Type
Text changes
to “WRITE”
and changes
from green to red
to “WRITE”
and changes
from green to red
NTSC
WRITE
DEF
M655E2AMF-107FP
S 3.OD
HSIZ
1 : 51
4-1. REMOTE ADJUSTMENT BUTTONS AND
INDICATORS
VOLUME (+)
(Service Mode)
ENT
(Enter into
memory)
memory)
0
(Remove
from
memory)
from
memory)
3
(Adjust)
Data up
Data up
RM-Y194
5
(Display)
Category
down
Category
down
MUTING
(Enter into
memory)
memory)
1
(Display)
Item up
Item up
2
(Display)
Category up
Category up
4
(Display)
Item down
Item down
8
(Initialize)
DISPLAY
(Service Mode)
POWER
(Service Mode)
6
(Adjust)
Data down
Data down
24
KV-21FK120
KV-21FK120
Service Adjustment Mode Memory
Category
Display
Item
Display
Data
Signal
Type
Type
Channel
Type
Type
NTSC
VIDEO1
DEF
M655E2AMF-107FP
S 3.OD
HSIZ
1 : 51
NVM:OK
Carry out Step 1 when adjusting IDs 0-6 and when replacing and
adjusting IC002.
1. In Service Mode, press 8 then ENT on the Remote Commander to
1. In Service Mode, press 8 then ENT on the Remote Commander to
re-initialize.
Category
Display
Item
Display
Data
Signal
Type
Type
Channel
Type
Type
Text changes
to “RESET”
and changes
from green to red
to “RESET”
and changes
from green to red
NTSC
RESET
DEF
M655E2AMF-107FP
S 3.OD
HSIZ
1 : 51
2. The set automatically turns off after re-initializing is complete.
4-3. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal with burst.
2. Access Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Adjust with SBRT if necessary.
5. Press 2 or 5 to select the VP1 Category
6. Press 1 or 4 to select GCUT and BCUT.
7. Press 3 or 6 to adjust the data value for best white balance.
8. Set the PICTURE and BRIGHTNESS to maximum.
9. Press 1 or 4 to select GDRV and BDRV.
10. Press 3 or 6 to adjust the data value for best white balance.
11. Press MUTING then ENT to write into the memory.
4-4. MEMORY WRITE CONFIRMATION
METHOD
1. After adjustment, pull out the plug from the AC outlet, then replace
the plug in the AC outlet again.
2. Turn the power switch ON and set to Service Mode.
3. Call the adjusted items again to confi rm they were adjusted.
25
KV-21FK120
KV-21FK120
4-5. SERVICE DATA LIST
1
H-SIZE
HSIZ
H SIZE(EW DC) : YUV OFFSET
41
2
H-AFC-2 phase
HPOS
H POSITION : YUV OFFSET
31
3
VSIZE
VSIZ
V RAMP SIZE : YUV OFFSET
31
4
VPOSI
VPOS V POSITION(RAMP DC) not useful : YUV OFFSET
35
5
LINI
VLIN
V LINEARITY
28
6
S CORRECTION
SCOR
S CORRECTION
45
7
BOW
VBOW
BOW
36
8
ANGLE
VANG
ANGLE
44
9
TRAPESIUM
TRAP
EW TRAPESIUM
29
10
PARABOLA
PAMP
EW PIN
47
11
UPPER CORNER
UPIN
UPPER PIN
31
12
LOWER CORNER
LPIN
LOWER PIN
29
13
(TROT)
TROT
TROT
109
14
FBPBLK
HBLK
H BLK mode select
00
15
HBLK R POS
RBLK
HBLK rear timing : YUV OFFSET
09
16
HBLK F POS
LBLK
HBLK front timing : YUV OFFSET
35
17
VBLK POS
VBLK
V BLK width
00
18
Macro OFF
HMSK
TOP VEND(when MACROVISION) prevent OFF
00
19
HOUT DUTY
HDW
H PULSE WIDTH(25u/19u)
01
20
H AFC Gain
AFC
AFC GAIN
00
21
H Charge pump
AFC1
AFC1 TIME CONSTANT
03
22
AFC1 PULLIN
AFCW
AFC1 PULL IN WIDE
00
23
V CD MODE
CDMD
V DET WINDOW SW TIMING
01
24
SYNC SLICE LVL(H)
HSS
SYNC SLICE LEVEL(H sepa)
00
25
SYNC SLICE LVL(L)
VSS
SYNC SLICE LEVEL(V sepa)
03
26
AUTO SLICE DOWN
SLDN
Auto Slice level DOWN
00
27
AUTO SLICE UP
SLUP
Auto Slice level UP
00
28
VJPSW
JPSW
Jump SW
00
29
HVCO FREERUN OFFSET
HOSC
H VCO fo offset ADJUST OFFSET
07
30
EHT
EHT
EHT
04
31
EHT GAIN
EHTG
EHT MODE
01
OSD
Description
Initial Data
(DEC)
DEF
Service
Group
No.
Name
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