JVC AV-21BD5EKI User manual

No.51742
Jul. 2000
A
V-21BD5EKI AV-21BD5EP AV-21BD5EE
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V-21BD5EKIS AV-21BD5EPS AV-21BD5EES
1COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
AV-21BD5EKI / AV-21BD5EP / AV-21BD5EE
AV-21BD5EKIS / AV-21BD5EPS / AV-21BD5EES
CONTENTS
!SPECIFICATIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1-2
!SAFETY PRECAUTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・ 1-5
!FUNCTIONS・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・
・・
・1-6
!SPECIFIC SERVICE INSTRUCTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・ 1-8
!SERVICE ADJUSTMENTS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・ 1-9
★
STANDARD CIRCUIT DIAGRAM (APPENDIX) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・
・・・・・・・・・・
・・・・・ 2-1
!PARTS LIST・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1-15
SERVICE MANUAL
COLOUR TELEVISION

No. 51742
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1-7
REMOTE CONTROL
TV mode
1. POWER
2. NUMBER 0-9 / NUMBER
3. P.MODE / OK
4. AV
5. UP
6. RIGHT
7. MENU
8. DOWN
9. LEFT
10. MUTING
11. RECALL
12. SLEEP
13. Not used
14. MOVE
15. SKIP
16. TV / TEXT
17. DELETE
18. MODE
19. VCR / / DVD switch
20. VCR / DVD Control buttons
TELETEXT mode
1. POWER
2. NUMBER 0-9
3. INDEX
4. Not used
5. UP
6. SUBPAGE
7. MENU
8. DOWN
9. HOLD
10. MUTING
11. REVEAL
12. SIZE
13. CANCEL
14. GREEN
15. RED
16. TV / TEXT
17. YELLOW
18. CYAN
19. VCR / / DVD switch
20. Not used

No.51742
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1-9
SERVICE ADJUSTMENTS
BEFORE ADJUSTMENT AND MAINTENANCE
1. Don't short any two soldering points or connect any component while TV set is power on.
2. Withdraw power plug before maintenance.
3. In order to ensure safety all components replaced should be identical. (For further details, refer to the component name and component No.
in PARTS LIST.)
4. Must be warm up the set for 30 minutes or more and degauss CRT thoroughly with demagnetizer coil before adjustment.
EQUIPMENT FOR ADJUSTMENT
1. Pattern Generator
2. Digital volt meter
3. Oscilloscope
4. Demagnetizer
5. Service remote controller (For repair service)
6. Remote controller (RM-C71 or RM-C72)
ADJUSTMENTS PROCEDURES
+B VOLTAGE CHECK
1. Receive a standard colour bar signal.
2. Connect digital volt meter between + of B1 Line circuit and GND.
3. Confirm that voltage is DC 123V #2.0V.
(RM-C71)
Service Remote ControllerRemote Controller
(RM-C72)

No.51742
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1-10
BASIC OPERATION OF SERVICE MENU
REMOTE CONTROLLER (RM-C71, RM-C72)
How to ENTER and EXIT from service mode
1. Select the CH-91.
2. Press the MENU KEY of the remote control unit and select
PICTURE from the MENU with the P.(▲)/ P.(▼) key of the
remote control unit .
3. While pressing the P. MODE/OK KEY of the remote control unit,
select "sharpness" from the MENU with the P.(▲)/ P.(▼) /
-/ + key. Then, set the set value of "sharpness" to "0" with
the -/ +KEY.
4. Press the MENU KEY of the remote control unit twice and return
to the normal screen. To enter the SERVICE MODE, change the
indication of RED, GREEN and MENU, in turn, with the key of
the remote control unit.
5. When exiting from the SERVICE MODE, turn the power switch
off.
How to set SERVICE MODE
1. Select thesetting item you want to change with the P.(▲)/ P.(▼)
key on the remote control unit. (The item you selected will be
indicated by YELLOW on the display.)
2. When changing the set values, use the -/ +KEY on the
remote control unit.
3. When the setting has been completed, turn the power switch off.
(The changed set values are stored in memory.)
SERVICE MENU screen selection
Press the P.(▲)/ P.(▼) key・・・・・・・・・・ select menu item.
(The letters of the selected items are displayed in yellow)
Pressthe -/ +KEY・・・・・・・・・・・ setting the value item.
・AGC ・VS Cor
・Black R ・V Shift
・Black G ・H Width
・WP Red ・EW Parabo
・WP Green ・Up Corner
・WP Blue ・Dw Corner
・H Parall ・EW Trapez
・H Bow ・Option
・H Shift
・V Slope
・V Amp
SERVICE
SERVICESERVICE
SERVICE
** Black R
** Black R** Black R
** Black R
screen
screenscreen
screen
SERVICE
SERVICESERVICE
SERVICE
** Black R
** Black R** Black R
** Black R
menu item
menu itemmenu item
menu item
Setting value
Settin
g
valueSettin
g
value
Setting value

No.51742
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1-11
FUNCTION OF SERVICE REMOTE CONTROLLER
POWER : Power On/Off key
S STOP : User R/C mode change (DW→JVC→AIWA)
NORMAL : NORMALⅠ→NORMALⅡ→Favorite
H/R : Fast heat-run mode in line production
EX-FACTORY : Not use
VOL MIN : Volume minimum key
VOL MAX : Volume maximum key
PR+ : Program up key
PR- : Program down key
SVC : Service mode On/Off key
A
FT : AFT adjustment key
A
FT-L : SECAM L AFT adjustment key
OPT : AGC adjustment key
PART : Not use
COR-T : Not use
COR-B : Not use
SEARCH : Search up/down key
A
V : AV mode/TV mode toggle key
TXT : Teletext On/Off key
S-BRI : Sub-brightness adjustment key
SYMM : Not use
BAL / AGC : LED EAST Yes/No toggle key
BRI : Brightness Min/Max toggle key
CONT : Contrast Min/Max toggle key
COLOR : Color Min/Max toggle key
SCREEN : Horizontal 1 line display key for screen adjustment
H-WIDTH : H. width adjustment key
H-CENTER : H. center adjustment key
R DRV : R drive adjustment key for W/B high beam
G DRV : G drive adjustment key for W/B high beam
B DRV : B drive adjustment key for W/B high beam
(Do not adjust : B is the reference)
R BIAS : R bias adjustment key for W/B low beam
G BIAS : G bias adjustment key for W/B low beam
B BIAS : B bias adjustment key for W/B low beam
(Do not adjust : B is the reference)
S-CUR : Not use
V-SLOPE : Not use
V-CEN : Vertical center adjustment key
V-SIZE : Vertical size adjustment key
Service Remote Controller

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ADJUSTMENTS
SELECT OPTION ITEM
G2 ALIGNMENT
1 TV in AV mode without video signal ⇒Black screen.
2TV preset with WP Red, WP Green and WP Blue equal to 32.
3TV preset with Black R, Black G equal to 8.
4Set TV in NORMAL I mode.
5Adjust screen volume (on FBT) such that the highest cathode cut-off voltage measured on CRT board, is Vcut off ±5V.
WHITE BALANCE
NOTE ●When the WHITE BALANCE adjustments are carried out, it is necessary to use the service remocon.
●Confirm G2 Alignment has been adjusted.
■
■■
■Low Light
1 Press the TV / AV button on the front of the TV unit and enter the VIDEO MODE.
2Input a crosshatch pattern signal.
3Press the SVC key to display the SVC screen as shown in Fig.1.
4Press the SCREEN key to display thesingle horizontal line.
5Check the color of the single horizontal line being displayed.
6Press the SCREEN key to disappear the single horizontal line.
7Adjust the bias values of R, G and B with their respective +/- keys so that the single horizontal line on the screen becomes “white”.
8While pressing the SCREEN key, check the color of the single horizontal line on the screen.
9Repeat the steps 5~8above until the single horizontal line on the screen becomes “white”.
Option Tuner maker Cut off / video Amp.
0 DAEWOO / SAMSUNG 140V / 92V
2 SIEL 140V / 92V
Screen size Vcut-off
21”
””
”125V

No.51742
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1-13
■
■■
■High Light
⑩Press the SCREEN key to display the single horizontal line.
⑪In the same manner as for “Low Light”, adjust R DRIVE and G DRIVE with their respective +/- keys.
⑫When the adjustment has been completed, press the SVC button to exit from the ADJ’MENT MODE.
FOCUS
1Input a crosshatch pattern signal
2Adjust the FOCUS volume (on FBT) to have the best resolution on screen.
VERTICAL GEOMETRY
Adjust the V Amp, V Shift, VSC or and V slope to compensate for vertical distortion.
HORIZONTAL PICTURE CENTERING
Adjust H Shift, to have the picture in the center of the screen.

No.51742
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1-14
EAST / WEST CORRECTION
Adjust the H. Parall, H. Bow, H. Widdth, EW. Parabo, Up corner, Dw Corner, EW Trapez to compensate for geometrical distortion.

AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
1
No.51742
AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
AV-21BD5EKI / AV-21BD5EP / AV-21BD5EE
AV-21BD5EKIS / AV-21BD5EPS / AV-21BD5EES
STANDARD CIRCUIT DIAGRAM
n
NOTE :
1. RESISTANCE IS SHOWN IN OHM. K=1000, M=1000000
2. UN ESS OTHERWISE NOTED IN SCHEMATIC A CAPACITOR VA UES ARE EXPRESSED IN Ê
ÊÊ
ÊF
3. VO TAGES READ WITH VTVM FROM POINT INDICATED TO CHASSIS GROUND USING A CO OR BAR SIGNA
WITH A CONTRO S AT NORMA INE 230V AC VO TAGE READINGS SHOWN ARE NORMA VA UES AND MAY
VARY +20% EXCEPT H.V
4. THIS CIRCUIT DIAGRAM IS A STANDARD ONE CIRCUIT PRINTED MAY BE SUBJECT TO CHANGE FOR PRODUCT
IMPROVEMENT WITHOUT PRIOR NOTICE.
n
WARNING :
BEFORE SERVICING THE CHASSIS, READ X-RAY RADIATION, SAFETY PRECAUTION, AND PRODUCT
SAFETY NOTICE IN SERVICE MANUA .
n
PRODUCT SAFETY NOTE :
COMPONENTS MARKED WITH
ARE IMPORTANT FOR MAINTAINING.
THE SAFETY OF THE SET AND SHOU D BE REP ACED ON Y WITH TYPES IDENTICA TO THOSE IN THE
ORIGINA OR SPECIFIED ONE IN THE PARTS IST.
DONT DEGRADE THE SAFETY THROUGH IMPROPER SERVICING.
n
CAUTION TO SERVICE TECHNICIANS :
BEFORE RETURNING THE RECEIVER TO CUSTOMER, EAKAGE CURRENT OR RESISTANCE MEASUREMENTS
SHOU D BE PERFORMED TO DETERMINE THAT EXPOSED PARTS ARE PROPER Y INSU ATED FROM THE
SUPP Y CIRCUIT.
CONTENTS
n B OCK DIAGRAM
2-2
n CIRCUIT DIAGRAM
2-3
n PATTERN DIAGRAMS
2-7
RESISTOR CAPACITOR COI
2-2 Jul. 2000 No.51742
B OCK DIAGRAM
BASE BAND SIGNAL
#28
#29
#49
#50
#52
#53
#36
#37 #58
SOUND PROCESSOR I601
AUDIO OUT
SCART1
AUDIO IN
SCART2
AUDIO
SCART1
I602
AUDIO
AMPLIFIER
TO SPEAKERS/
EAD P ONE
I702
MEMORY
II C BUS
VIDEO PROCESSOR
I501
#51
#52
#53
#46
#47
#48
#43 #40
#2 #3
MICRO CONTROLLER
TO CRT BOARD
VIDEO
IN
VIDEO
OUT
QSS
OUT
EXIT
VIDEO IN
#38 #35 #42
#23
#24
#28
#29
IF
VIDEO IF
IF=38.9M z(All standard except L’)
=33.9M z(L’)
SF1 SF2
AUDIO IF
#4-I501
RGB OUT
EXT RGB IN
C ROMA IN
TRAP 5.5M z
SIF(5.5M z for system B/G)
SWITC ING
CURCUIT
VIDEO IN
SCART1
SCART2
SWITC CONTROL
form #8-I501
and #-8 SCART1

AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
No.51742 No.51742
2
2-3 2-4
CIRCUIT DIAGRAM

AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
1
No.51742
AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
AV-21BD5EKI / AV-21BD5EP / AV-21BD5EE
AV-21BD5EKIS / AV-21BD5EPS / AV-21BD5EES
STANDARD CIRCUIT DIAGRAM
n
NOTE :
1. RESISTANCE IS SHOWN IN OHM. K=1000, M=1000000
2. UNLESS OTHERWISE NOTED IN SCHEMATIC ALL CAPACITOR VALUES ARE EXPRESSED IN Ê
ÊÊ
ÊF
3. VOLTAGES READ WITH VTVM FROM POINT INDICATED TO CHASSIS GROUND USING A COLOR BAR SIGNAL
WITH ALL CONTROLS AT NORMAL LINE 230V AC VOLTAGE READINGS SHOWN ARE NORMAL VALUES AND MAY
VARY +20% EXCEPT H.V
4. THIS CIRCUIT DIAGRAM IS A STANDARD ONE CIRCUIT PRINTED MAY BE SUBJECT TO CHANGE FOR PRODUCT
IMPROVEMENT WITHOUT PRIOR NOTICE.
n
WARNING :
BEFORE SERVICING THE CHASSIS, READ X-RAY RADIATION, SAFETY PRECAUTION, AND PRODUCT
SAFETY NOTICE IN SERVICE MANUAL.
n
PRODUCT SAFETY NOTE :
COMPONENTS MARKED WITH !
!!
!ARE IMPORTANT FOR MAINTAINING.
THE SAFETY OF THE SET AND SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE
ORIGINAL OR SPECIFIED ONE IN THE PARTS LIST.
DONT DEGRADE THE SAFETY THROUGH IMPROPER SERVICING.
n
CAUTION TO SERVICE TECHNICIANS :
BEFORE RETURNING THE RECEIVER TO CUSTOMER, LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS
SHOULD BE PERFORMED TO DETERMINE THAT EXPOSED PARTS ARE PROPERLY INSULATED FROM THE
SUPPLY CIRCUIT.
CONTENTS
nBLOCK DIAGRAM
2-2
nCIRCUIT DIAGRAM
2-3
nPATTERN DIAGRAMS
2-7
RESISTOR CAPACITOR COIL
REVISED
Please throw it out the service manual for AV-21BD5EKI/EKIS/EP/EPS/EE/EES issued in
Jul. 2000,and use this service manual (No.51742 Oct. 2000).
2-2 Oct. 2000 No.51742
BLOCK DIAGRAM
BASE BAND SIGNAL
#28
#29
#49
#50 #52
#53 #36
#37 #58
SOUND PROCESSOR I601
AUDIO OUT
SCART1
AUDIO IN
SCART2
AUDIO
SCART1
I602
AUDIO
AMPLIFIER
TO SPEAKERS/
HEAD PHONE
I702
MEMORY
II C BUS
VIDEO PROCESSOR
I501
#51
#52
#53
#46
#47
#48
#43 #40
#2 #3
MICRO CONTROLLER
TO CRT BOARD
VIDEO
IN VIDEO
OUT QSS
OUT
EXIT
VIDEO IN
#38 #35 #42
#23
#24 #28
#29
IF
VIDEO IF
IF=38.9MHz(All standard except L’)
=33.9MHz(L’)
SF1 SF2
AUDIO IF
#4-I501
RGB OUT
EXT RGB IN
CHROMA IN
TRAP 5.5MHz
SIF(5.5MHz for system B/G)
SWITCHING
CURCUIT
VIDEO IN
SCART1
SCART2
SWITCH CONTROL
form #8-I501
and #-8 SCART1

AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
AV-21BD5EKI AV-21BD5EP AV-21BD5EE
AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES
No.51742 No.51742
2
DIFFERENCE LIST
!SYMBOL AV-21BD5EP/EPS AV-21BD5EKI/EKIS AV-21BD5EE/EES
!CRT(ITC) 4859629361C
!POWER CORD 4859906210 4859906310 4859906210
PWB ASSY PTMPMSA21Y3FPJ PTMPMSA21Y3KPJ
I501 1DW3673AE3 1DW3673AD3
2-3 2-4
CIRCUIT DIAGRAM

No. 51742
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V-21BD5EKI AV-21BD5EP AV-21BD5EE
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V-21BD5EKIS AV-21BD5EPS AV-21BD5EES
1-7
REMOTE CONTROL UNIT
TV mode
1. POWER
2. NUMBER 0-9 / NUMBER
3. P.MODE / OK
4. AV
5. UP
6. RIGHT
7. MENU
8. DOWN
9. LEFT
10. MUTING
11. RECALL
12. SLEEP
13. Not used
14. MOVE
15. SKIP
16. TV / TEXT
17. DELETE
18. MODE
19. VCR / / DVD switch
20. VCR / DVD Control buttons
TELETEXT mode
1. POWER
2. NUMBER 0-9
3. INDEX
4. Not used
5. UP
6. SUBPAGE
7. MENU
8. DOWN
9. HOLD
10. MUTING
11. REVEAL
12. SIZE
13. CANCEL
14. GREEN
15. RED
16. TV / TEXT
17. YELLOW
18. CYAN
19. VCR / / DVD switch
20. Not used
48B00RMC71
[EP / EPS / EE / EES]
48B00RMC72
[EKI / EKIS]

No.51742
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V-21BD5EKI AV-21BD5EP AV-21BD5EE
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V-21BD5EKIS AV-21BD5EPS AV-21BD5EES
1-9
SERVICE ADJUSTMENTS
BEFORE ADJUSTMENT AND MAINTENANCE
1. Don't short any two soldering points or connect any component while TV set is power on.
2. Withdraw power plug before maintenance.
3. In order to ensure safety all components replaced should be identical. (For further details, refer to the component name and component No.
in PARTS LIST.)
4. Must be warm up the set for 30 minutes or more and degauss CRT thoroughly with demagnetizer coil before adjustment.
EQUIPMENT FOR ADJUSTMENT
1. Pattern Generator
2. Digital volt meter
3. Oscilloscope
4. Demagnetizer
5. Remote control unit
48B00RMC71
Remote Control unit
48B00RMC72

No.51742
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1-10
BASIC OPERATION OF SERVICE MENU
How to ENTER and EXIT from SERVICE MODE
1. Press the MUTING KEY and RECALL KEY of the REMOTE
CONTOROL UNIT at the same time to display the service
MENU screen shown Fig. B.
2. When exiting from the SERVICE MODE, turn the power
switch off.
How to set SERVICE MODE
0. Select the setting item you want to change with the P.(▲)/
P.(▼) key on the REMOTE CONTROL UNIT. (The item you
selected will be indicated by YELLOW on the display.)
2. When changing the set values, use the -/ +KEY on the
REMOTE CONTROL UNIT.
3. When the setting has been completed, turn the power switch
off.
(The changed set values are stored in memory.)
SERVICE MENU screen selection
●Press the P.(▲) / P.(▼) key ・・・・・・ select menu item.
(The letters of the selected items are displayed in yellow)
●Press the - / + key・・・・・・・・・ setting the value item.
No Adjustment item
1AGC
2Black R
3Black G
4WP Red
5WP Green
6WP Blue
7H Parall (NOT USED)
8HBow (NOTUSED)
9H Shift
10 V Slope
11 V Amp
12 V S Cor
13 V Shift
14 H Width (NOT USED)
15 EW Parabo (NOT USED)
16 Up Corner (NOT USED)
17 Dw Corner (NOT USED)
18 EW Trapez (NOT USED)
19 Option
Fi
g
. A
MUTING
RECALL
SERVICE
SERVICESERVICE
SERVICE
** Black R
** Black R** Black R
** Black R
screen
screenscreen
screen
SERVICE
SERVICESERVICE
SERVICE
** Black R
** Black R** Black R
** Black R
menu item
menu itemmenu item
menu item
Setting value
Settin
g
valueSettin
g
value
Setting value
Fig. B

No.51742
A
V-21BD5EKI AV-21BD5EP AV-21BD5EE
A
V-21BD5EKIS AV-21BD5EPS AV-21BD5EES
1-11
ADJUSTMENTS
+B VOLTAGE CHECK
1. Receive the standard colour bar signal.
2. Connect digital voltmeter between + of B1 Line circuit and GND.
3. Confirm that voltage is DC 123V #2.0V.
SCREEN
1. Set TV in AV mode without video signal ⇒Black screen.
2. Set [WP Red], [WP Green] and [WP Blue] equal to “32”.
3. Set [Black R], [Black G] equal to “8”.
4. Set TV in normal I mode.
5. Adjust SCREEN VR (on FBT) such that the highest cathode cut-off voltage measured on CRT SOCKET PWB ASS’Y is DC 125V ±5V.
WHITE BALANCE
NOTE :Confirm SCREEN Adjustment has been adjusted.
■
■■
■LOW LIGHT
1. Input the 10-step gray scale signal. (include10% Black)
2. Enter the SERVICE MODE.
3. Turn the SCREEN VR (on FBT) gradually, to where the 2nd gray bar(10% Black) faintly visible.
4. Adjust [Black B] and [Black R] not to the colours on the gray bar.
■
■■
■HIGH LIGHT
5. Apply the white signal.
6. Adjust [R DRIVE] and [G DRIVE] so that the picture becomes white.
FOCUS
1. Input the crosshatch pattern signal.
2. Adjust the FOCUS VR (on FBT) to have the best resolution on screen.
VERTICAL GEOMETRY
Adjust [V Amp], [V Shift] and [V Slope], [V Slope] [V S Cor] to compensate for vertical distortion.
HORIZONTAL PICTURE CENTERING
Adjust [H Shift] to have the picture in the center of the screen.
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