Sony KV-21XE40B Service Manual ▷ View online
— 21 —
KV-21XE40B
A
BOARD
R582 CONFIRMATION METHOD
(HV HOLD-
DOWN CONFIRMATION) AND READJUSTMENTS
The following adjustments should always be performed when
replacing the following components which are marked with
] on
the schematic diagram:
IC301, IC521, IC602, D572, D573, D574, DY,
C511, C574, C575, R578, R582, R583, R584,
R585, R586,R625, R626, R634, R635, T504 (FBT)
C511, C574, C575, R578, R582, R583, R584,
R585, R586,R625, R626, R634, R635, T504 (FBT)
(1) Preparation before Confirmation
1) Turn the POWER switch ON. Input an entirely white
signal and set the PICTURE and BRIGHT controls to
maximum.
maximum.
2) Confirm that the voltage between C574(+) and ground is
more than:
99.8VDC
when the set is operating normally with 120.0-240.0
±
2.0
VAC.
(2) Hold-down Operation Confirmation
1) Connect the current meter between Pin 11 of the FBT
(T504) and the PCB land where Pin
11
would normally attach.
2) Input a dot signal and set PICTURE and BRIGHTNESS to
minimum:
IABL = 95+100/-95
µ
A
3) Confirm the voltage of A board TP-600 is
116.8
±
0.3VDC
4) Connect the Digital Voltmeter and the DC power supply
via diode 1SS119 to C574 (+). (See figure 1.0 on next page.)
5) Increase the DC power voltage gradually until the picture blanks out.
6) Read the digital voltmeter indication.
7) Turn DC power source off immediately.
STANDARD
Less than or equal to:
Less than or equal to:
127.3 VDC
8) Input a white signal and set PICTURE and BRIGHTNESS to Max
9) Repeat steps from (4) to (7).
STANDARD
Less than or equal to:
Less than or equal to:
127.3 VDC
SECTION 4
SAFETY RELATED ADJUSTMENTS
The following adjustments should always be performed
when replacing the following components which are marked
with
] on the schematic diagram:.
IC001, IC602, R030, R626, R632,
R633, R635, R636, R637, R638, R639
1) Supply 130
±
2.0
0
VAC to the set with a variable auto
transformer.
2) Input a dot signal.
3) Set the PICTURE control and the BRIGHT control to
minimum condition.
4) Set to service adjustment mode.
5) Select PADJ with
and
.
6) Adjust with to the 0 level.
7) Confirm the voltage of A BOARD TP-600 is less than
7) Confirm the voltage of A BOARD TP-600 is less than
125V DC.
8) If step 7 is not satisfied, replace the components, repeat the
above steps.
9) Supply 120.0
±
2.0 VAC to the set with a variable auto
transformer.
10) Adjust with
and
for:
116.8
±
0.3V DC
11) Write into the memory by pressing
then
.
B+ VOLTAGE CONFIRMATION AND ADJUSTMENT
(3) Hold-down Readjustment
If the current setting indicated in step 2-2 cannot be met,
readjustment should be performed by altering the resistance
readjustment should be performed by altering the resistance
value of R582, a component marked with
.
+
I ABL
ABL
T504
FBT
range
-
ammeter
3.0 mA DC
A
— 23 —
KV-21XE40B
5-1. ELECTRICAL ADJUSTMENT BY REMOTE COMMANDER
7. Press
then
on the Remote Commander to
initialize.
Carry out step 7 when adjusting
IDs 0 to 4 and when replacing
and adjusting IC003.
IDs 0 to 4 and when replacing
and adjusting IC003.
SERVICE RESET
8. Turn set off and on to exit.
(3) Adjust Buttons and Indicator
Use Remote Commander (RM-Y155) to perform circuit
adjustments on this model.
adjustments on this model.
NOTE : Test Equipment Required.
1. Pattern Generator
2. Frequency Counter
3. Digital Multimeter
4. Audio OSC
2. Frequency Counter
3. Digital Multimeter
4. Audio OSC
(1) Method of Setting the Service
Adjustment Mode
SERVICE MODE PROCEDURE
1. Standby mode. (Power off)
2.
on the
Remote Commander. (Press each button within a
second.)
SERVICE ADJUSTMENT MODE IN
3. The CRT displays the item being adjusted.
4. Press
or on the Remote Commander to select the
item.
5. Press
or on the Remote Commander to change the
data.
6. Press
then
to write into memory.
SERVICE ADJUSTMENT MODE MEMORY
Green
SERVICE WRITE
Red
(2) 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 confirm they were adjusted.
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 confirm they were adjusted.
SECTION 5
CIRCUIT ADJUSTMENTS
CIRCUIT ADJUSTMENTS
RM-Y155
1
2
3
4
5
6
7
8
9
0
MUTING SLEEP POWER
TV/VIDEO
ENTER
RESET
VOL
CH
JUMP
+
-
ENTER
Write into memory
Service mode
Initialize
5
8
Data up
Data down
3
6
POWER
Service mode
MUTING
Write the memory
Item up 1
Item down 4
DISPLAY
Service mode
VOL(+)
Service mode
DISPLAY
MTS
+
-
MENU
SELECT
Disp.
(Item)
(Item)
Item
data
data
SERVICE SYS 0
— 24 —
KV-21XE40B
(4) Item of Adjustments
Note: No. 1 through 64 show adjustment order.
SERVICE ID0 25
D A T A
INITIAL DATA
AVERAGE
NO.
I T E M
FUNCTION
RANGE NTSC
P A L - M
P A L - N
VIDEO
D A T A
1
HSIZ
HORIZONTAL AMP. ADJ.
0 - 6 3
3 1
3 1
3 1
3 1
2
HPOS
HORIZONTAL POS. ADJ.
0 - 6 3
2 1
2 1
1 9
2 8
3
VBOW VRT LINE BOWING ADJ.
0 - 1 5
6
8
4
VANG
VRT LINE BOW SLANT ADJ.
0 - 1 5
6
1 0
5
TRAP
HORIZ. TRAPEZOID ADJ.
0 - 1 5
1 5
1 5
6
PAMP HORIZ. PIN DISTORTION ADJ.
0 - 6 3
3 1
3 1
3 1
3 1
7
CPIN
SAME AS PAMP-SCRN TP/BTM 0 - 6 3
3 1
3 1
3 1
3 1
8
VSIZ
VERTICAL AMP. ADJUST
0 - 6 3
4 3
4 3
4 7
4 4
9
VPOS
VERTICAL POSITION ADJ.
0 - 6 3
3 5
3 5
2 8
3 3
1 0 VLIN
VERTICAL LINEARITY ADJ.
0 - 1 5
7
7
7
5
1 1 SCOR
VERTICAL AMOUNT ADJ.
0 - 1 5
7
7
7
9
1 2 VZOM 16:9 CRT Z MODE ON/OFF
0 , 1
0
0
1 3 EHT
VRT HI-VOLT. CORRECTION
0 - 1 5
1 5
1 5
1 4 ASP
ASPECT RATIO CONTROL
0 - 6 3
4 7
4 7
1 5 SCRL
16:9 CRT Z MODE TRAN SCRL
0 - 6 3
3 1
3 1
1 6 HBLK
RGB OUT WIDTH CONTROL
0 , 1
1
1
1 7 LBLK
LEFT SCREEN HBLK CONTROL
0 - 1 5
1 5
1 5
1 8 RBLK
RGT SCREEN HBLK CONTROL
0 - 1 5
3
3
1 9 VUSN
V SAW WAVEFORM COMPRES
0 , 1
0
0
2 0 HDW
H. DRIVE PULSE WIDTH
0 , 1
0
0
2 1 EWDC EW/DC ADJUST
0 , 1
0
0
2 2 LVLN
SCREEN BTM VRT LIN ADJUST
0 - 1 5
0
0
2 3 UVLN
SCREEN TOP VRT LIN ADJUST
0 - 1 5
0
0
2 4 RDRV
R OUTPUT DRIVE CONTROL
0 - 6 3
3 0
3 2
2 5 GDRV
G OUTPUT DRIVE CONTROL
0 - 6 3
2 4
2 8
2 6 BDRV
B OUTPUT DRIVE CONTROL
0 - 6 3
2 1
2 5
2 7 RCUT
R OUTPUT CUTOFF CONTROL
0 - 1 5
1 5
7
2 8 GCUT
G OUTPUT CUTOFF CONTROL
0 - 1 5
7
5
2 9 BCUT
B OUTPUT CUTOFF CONTROL
0 - 1 5
7
6
3 0 DCOL
DYNAMIC COLOR ON/OFF
0 , 1
0
1
3 1 SHUE
SUB HUE
0 - 3 1
1 5
1 5
3 2 SCOL
SUB COLOR
0 - 3 1
1 4
1 4
1 4
1 5
3 3 SBRT
SUB BRIGHTNESS
0 - 3 1
7
5
3 4 RON
R OUTPUT ON/OFF
0 , 1
1
1
3 5 GON
G OUTPUT ON/OFF
0 , 1
1
1
3 6 BON
B OUTPUT ON/OFF
0 , 1
1
1
3 7 AXPL
AXIS PAL
0 , 1
0
0
3 8 AXNT
AXIS NTSC
0 , 1
0
0
3 9 CBPF
CHROMA BPF ON/OFF
0 , 1
1
1
4 0 CTRP
Y TRAP FILTER ON/OFF
0 , 1
0,1:combfilter models
0
4 1 COFF
COLOR ON/OFF
0 , 1
0
0
4 2 KOFF
SET COLOR KILLER
0 , 1
0
0
4 3 SSHP
SUB SHARPNESS
0 - 1 5
1 0
1 0
4 4 SHPF
SHARPNESS CIRCUIT F0
0 , 1
1
1
1
4 5 PREL
PRE/OVR SHOOT SWITCHING
0 , 1
0
0
4 6 Y-DC
DC TRANS RATIO SWITCHING
0 , 1
1
1
4 7 GAMM GAMMA CORRECTION AMNT
0 - 3
0
0
4 8 ABLM ABL MODE SWITCHING
0 , 1
1
1
4 9 VTH
ABL C D VTH SWITCHING
0 , 1
1
1
5 0 YDEL Y DELAY TIME CONTROL
0 - 1 5
7
7
5 1 NCOL
NO COLOR ID
0 , 1
1
1
5 2 FSC
FSC OUT ON/OFF
0 , 1
'1' for V series, '0' for S,M & trinorma
0
5 3 K - I D
KILLER ID CONTROL SW
0 , 1
0
0
5 4 HOSC
H VCO OSCILLATION FREQ
0 - 1 5
1 0
1 0
5 5 VSS
V SYNC SLICE LEVEL
0 , 1
0
0
5 6 HSS
H SYNC SLICE LEVEL
0 , 1
0
0
5 7 HMSK
0 , 1
1
1
5 8 VTMS
SELECT SIGNAL VTIM PIN
0 - 3
0
0
5 9 CDMD V CNT DWN MODE SWITCHING
0 - 3
0
1
1
6 0 AFC
AFC LOOP GAIN SWITCHING
0 - 3
0
0
0
6 1 FIFR
FIELD FREQUENCY
0 - 3
'3' for NTSC models, '1' for trinorma
1
6 2 SBAL
SUB BALANCE
0 - 1 5
1 3
1 3
6 3 DISP
OSD POSITION
0 - 1 2 7
1 5
1 5
6 4 PADJ
POWER ADJUSTMENT
0 - 6 3
5 1
4 7
— 25 —
KV-21XE40B
6. Connect an oscilloscope to CN1752 Pin 4 or (R OUT) of
C Board and ground.
7. Select RDRV with and .
8. Adjust with and for: 1.70
C Board and ground.
7. Select RDRV with and .
8. Adjust with and for: 1.70
±
0.05 Vp-p.
9. Reset the item DCOL to "1" level.
10. Write the memory by pressing
then
.
11. Return the following back to normal after adjustment.
PICTURE . . . . . . . . . . .
MAX
COLOR . . . . . . . . . . .
CENTER
BRIGHT . . . . . . . . . . . CENTER
R ON
. . . . . . . . . . . ON (1)
G ON . . . . . . . . . . . ON (1)
B ON . . . . . . . . . . .
ON (1)
DISPLAY POSITION ADJUSTMENT (DISP)
1. Input a color-bar signal.
2. Set to Service adjustment Mode.
3. Select DISP with and
.
4. Adjust with and
for adjustment of characters to center .
5. Write the memory by pressing
then
.
6. Check if the text is displayed on the screen.
SUB BRIGHT ADJUSTMENT (SBRT)
1. Input a cross-hatch signal.
2. Set to Service adjustment Mode.
3. Set the PICTURE and BRIGHT to minimum.
2. Set to Service adjustment Mode.
3. Set the PICTURE and BRIGHT to minimum.
4. Select SBRT with
and
.
5. Adjust with and
to obtain a faintly visible cross-hatch.
6. Write into the memory by pressing
then
.
SUB HUE, SUB COLOR ADJUSTMENT (SHUE, SCOL)
1: ON
0: OFF
0: OFF
SERVICE RON 1
5-2.
A BOARD ADJUSTMENTS
H. FREQUENCY ADJUSTMENT
1. Input a monoscope signal.
2. Set to Service adjustment Mode.
3. Connect a frequency counter to base of Q501
2. Set to Service adjustment Mode.
3. Connect a frequency counter to base of Q501
(TP-500 H. DRIVE).
4. Select the item of AFC, set to 3 level (free run).
5. Check H. Frequency for the 15650
±
200 Hz.
6. Select the item of AFC again, adjust the level "0".
7. Write into the memory by pressing
7. Write into the memory by pressing
then
.
V. FREQUENCY ADJUSTMENT
1. Select video 1 with no signal input.
2. Set the conditions with standard setting.
3. Connect the frequency counter across TP-508 or CN501
VDY (+) pin 6 connector and ground.
4. Check V. Frequency for the 50
±
2 Hz.
SUB CONTRACT ADJUSTMENT (SCON)
1. Input a color-bar signal.
2. Select the red color.
3. Set to Service adjustment Mode.
4. Select the item DCOL to "0" level.
5. Set the conditions as follows.
2. Select the red color.
3. Set to Service adjustment Mode.
4. Select the item DCOL to "0" level.
5. Set the conditions as follows.
PICTURE . . . . . . . . . . .
MAX
COLOR . . . . . . . . . . .
MIN
BRIGHT . . . . . . . . . . .
CENTER
R ON
. . . . . . . . . . .
ON (1)
G ON
. . . . . . . . . . .
OFF (0)
B ON
. . . . . . . . . . .
OFF (0)
1.8
±
0.05 Vp-p
White
n
n
Black
1.70
±
0.05 Vp-p
SERVICE DISP 15
(5)
Feature ID Map
KV-
DESTINATION
ID-0
ID-1
ID-2
ID-3
ID-4
ID-5
1
2 1 X E 4 0 B
(E)
23
3
1
195
51
1
3
6
1
4
1. Input a color-bar signal.
2. Set to Service adjustment Mode.
2. Set to Service adjustment Mode.
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