Sony KV-21FA310 (serv.man2) Service Manual ▷ View online
18
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
SECTION 3: SAFETY RELATED ADJUSTMENTS
Hold-Down Readjustment
If the setting indicated in Step 2 of Hold-Down Operation Confi rmation
cannot be met, readjustment should be performed by altering the
resistance value of R530, R531 component marked with X.
cannot be met, readjustment should be performed by altering the
resistance value of R530, R531 component marked with X.
3mA DC range
+
-
+
-
A
+
-
FBT
TP85
T503
FBT
FBT
TP85
R531 R530
DC Power Supply
digital multimeter
ammeter
Figure 1
3-2. B+ VOLTAGE CONFIRMATION AND
ADJUSTMENT
Always perform the following adjustments when replacing the following
components, which are marked with Y on the schematic diagram on the
AW Board:
components, which are marked with Y on the schematic diagram on the
AW Board:
AW BOARD
IC600, PH602
IC600, PH602
Adjustment (Y)
1. Using a Variac, apply AC input voltage: 130 + 2.0/-0.0 VAC
2. Input a monoscope signal.
3. Set the PICTURE control and the BRIGHT control to
minimum.
4. Confi rm the voltage on AW Board between TP23 and ground is less
than 136.5 VDC.
5. If step 4 is not satisfi ed, replace R530 and R531 on AW Board and
repeat the above steps.
3-1. X R530, R531 CONFIRMATION METHOD
(HV HOLD-DOWN CONFIRMATION) AND
READJUSTMENTS
READJUSTMENTS
The following adjustments should always be performed when replacing
the following components which are marked with Y on the schematic
diagram:
the following components which are marked with Y on the schematic
diagram:
C531, C532, D519, D520,
D521, IC501, IC600, PH602,
R529, R530, R531, R532,
R533, R550, T503 (FBT),
T504 (DFT)
D521, IC501, IC600, PH602,
R529, R530, R531, R532,
R533, R550, T503 (FBT),
T504 (DFT)
HV HOLD-DOWN
R530, R531
R530, R531
Part Replaced (Y)
Adjustment (X)
Preparation Before Confi rmation
1. Using a Variac, apply AC input voltage: 120 +/- 2.0 VAC.
2. Turn the POWER switch ON.
3. Input a white signal and set the PICTURE and BRIGHT controls to
maximum.
4. Confi rm that the voltage of more than 23.0 VDC appears between
TP85 and ground on the AW Board.
Hold-Down Operation Confi rmation
1. Connect the current meter between Pin 11 of the FBT (T503) and the
PWB land where Pin 11 would normally attach. (See Figure 1).
2. Input a dot signal and set PICTURE and BRIGHTNESS to minimum:
IABL = 2175 + 100/ -325 µA.
3. Confi rm the voltage of AW Board TP91 is 134.6 ± 1.0 VDC.
4. Connect the digital voltmeter and the DC power supply to TP85 and
ground. (See Figure 1).
5. Increase the DC power voltage gradually until the picture blanks out.
6. Turn DC power source off immediately.
7. Read the digital voltmeter indication:
(standard = 27.24 + 0.0/ - 0.1 VDC).
8. Input a white signal and set PICTURE and BRIGHTNESS to
maximum: IABL = 2175 + 100/ -325 µA.
9. Repeat steps 4 to 7.
19
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
4-1. REMOTE ADJUSTMENT BUTTONS AND
INDICATORS
VOLUME (+)
(Service Mode)
6
Decrease
Data value
Data value
ENTER
(Enter into
memory)
memory)
0
(Remove from
memory)
memory)
3
Increase
Data value
Data value
RM-Y195
5
Display previous
Device
Device
MUTING
(Enter into
memory)
memory)
1
Display next
OSD item
OSD item
2
Display next
Device
Device
4
Display previous
OSD item
OSD item
8
(Initialize)
DISPLAY
(Service Mode)
POWER
(Service Mode)
SECTION 4: CIRCUIT ADJUSTMENTS
Electrical Adjustments by Remote Commander
Use the Remote Commander
(RM-Y194 or RM-Y195)
to
perform the circuit adjustments in this section.
Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator
4-2. ACCESSING THE SERVICE
ADJUSTMENT MODE
1. Standby mode (Power off).
2. Press the following buttons on the remote commander within a
second of each other:
DISPLAY
Channel 5
Sound Volume +
POWER
The screen displays the fi rst service data device OSD item.
Signal
Type
Type
Channel
Type
Type
NTSC
VIDEO1
DEF
M6J586MK-050FP
F1.2
HSIZ
1:35 NVM:OK
Device
OSD
Item
Initial
Data
Value
1. On the Remote Commander press 2 or 5 to select the device.
2. Press 1 or 4 to select the OSD.
3. Press 3 or 6 to change the data value.
4. Press MUTING then ENTER to write into memory.
Signal
Type
Type
Channel
Type
Type
NTSC
WRITE
DEF
M6J586MK-050FP
F1.2
HSIZ
1:35 NVM:OK
Text
changes to
“WRITE” and
changes
colors from
green to red
changes to
“WRITE” and
changes
colors from
green to red
Device
OSD
Item
Initial
Data
Value
20
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
Service Adjustment Mode Memory
Use the following procedure when adjusting IDs 0-7 and when replacing
and adjusting IC002.
1. Access Service Adjustment Mode.
and adjusting IC002.
1. Access Service Adjustment Mode.
2. Press 8 then ENTER on the Remote Commander to initialize.
Signal
Type
Type
Channel
Type
Type
NTSC
RESET
DEF
M6J586MK-050FP
F1.2
HSIZ
1:35 NVM:OK
Text
changes to
“RESET”
and changes
colors from
green to red
changes to
“RESET”
and changes
colors from
green to red
Device
OSD
Item
Initial
Data
Value
The TV powers off after completing the initialization process.
4-3. CONFIRMING SERVICE ADJUSTMENT
CHANGES
1. After completing adjustments, pull out the plug from the AC outlet,
then replace the plug in the AC outlet again.
2. Access Service Adjustment Mode.
3. Using the buttons on the Remote Commander, locate the adjusted
OSD items again to confi rm they were adjusted.
21
KV-21FA310/21FV210/29FA310/29FS110/29FV210
KV-21FA310/21FV210/29FA310/29FS110/29FV210
4-4. SERVICE DATA LISTS
Device "DEF"
Item#
OSD
DETAIL
Initial Data
(DEC) 21"
NTSC/RF NTSC/YUV
Initial Data
(DEC) 21"
PAL M PAL N
Initial Data
(DEC) 29"
NTSC/RF NTSC/YUV
Initial Data
(DEC) 29"
PAL M PAL N
VAR: 1
HSIZ
H SIZE(EW DC)
43 43
43 43
41 41
40 39
VAR: 2
HPOS
H POSITION
16 17
13 13
9 14
14 19
VAR: 3
VSIZ
V RAMP SIZE
31 32
31 31
35 37
36 37
VAR: 4
VPOS
V POSITION(RAMP DC)
32 31
31 31
33 32
33 33
VAR: 5
VLIN
V LINEARITY
39 39
39 39
33 36
47 33
VAR: 6
SCOR
S CORRECTION
33 33
33 33
50 41
44 50
VAR: 7
VBOW
BOW
29 29
29 29
32 36
35 30
VAR: 8
VANG
ANGLE
32 32
32 32
34 37
36 40
VAR: 9
TRAP
EW TRAPESIUM
40 40
40 40
29 27
32 29
VAR: 10
PAMP
EW PIN
21 21
21 21
28 26
28 26
VAR: 11
UPIN
UPPER PIN
34 35
34 34
29 30
31 29
VAR: 12
LPIN
LOWER PIN
34 33
33 33
30 31
28 30
VAR: 13
TROT
TROT
109
109
VAR: 14
HBLK
H BLK mode select
00
00
VAR: 15
RBLK
HBLK rear timing
28 28
28 28
28 28
34 34
VAR: 16
LBLK
HBLK front timing
54 54
54 54
54 54
60 60
VAR: 17
VBLK
V BLK width
03
03
18
HMSK
TOP VEND(when MACROVISION)prevent OFF
00
00
19
HDW
H PULSE WIDTH(25u 19u)
01
01
20
AFC
AFC GAIN
00
00
21
AFC1
AFC1 TIME CONSTANT
RF/03 AV/03 YUV/03
RF/03 AV/03 YUV/03
22
AFCW
AFC1 PULL IN WIDE
01
01
23
CDMD
V DET WINDOW SW TIMING
01
01
24
HSS
SYNC SLICE LEVEL(H sepa)
00
00
25
VSS
SYNC SLICE LEVEL(V sepa)
03
03
26
SLUD
Auto Slice level UP DOWN
00
00
27
JPSW
Jump SW
00
00
28
HOSC
H VCO fo offset ADJUST OFFSET
03
03
29
EHT
EHT
04
04
30
EHTG
EHT MODE
01
01
31
SLOH
LPF SYNC H
01
01
32
SLOV
LPF SYNC V
03
03
33
SLOP
LPF SYNC
01
01
34
SLVC
LPF SYNC VCOIN OFF
00
00
35
SLHC
LPF SYNC HCOIN OFF
00
00
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