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SERVICE MANUAL
COLOUR TELEVISION
YA086B20053
AV-28QH4BU, AV-28QH4SU
Supplementary
The following items for the AV-29QH4BU and AV-29QH4SU were changed partly.
Therefore, this service manual describes only the items which differ from those of the AV-29QH4BU and AV29QH4SU service manual.
For details other than those described in this manual, please refer to the AV-29QH4BU and AV-29QH4SU
service manual (No.YA086, 2005/2).
DIFFERENCE LIST
PRINTED WIRING BOARD PARTS LIST
MAIN P.W. BOARD ASS'Y
Ref. No.
TU200 VE-30009637 VE-30033888 TUNER Non compatible
FEAUTER BOX P.W. BOARD ASS'Y
NOTE: Be sure to change IC752, when the TUNER is changed.
Ref. No.
IC752 VE-30013571 VE-20190399 IC Compatible
BEFORE AFTER
BEFORE AFTER
Part No.
Part No.
PART NAME DESCRIPTION
PART NAME DESCRIPTION
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YA086B
2005/3
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SECTION 1
PRECAUTION
Please refer to "AV-29QH4BU and AV-29QH4SU (No.YA086)" about this section.
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
Please refer to "AV-29QH4BU and AV-29QH4SU (No.YA086)" about this section.
SECTION 3
DISASSEMBLY
Please refer to "AV-29QH4BU and AV-29QH4SU (No.YA086)" about this section.
SECTION 4
ADJUSTMENT
4.1 SETTING VALUES OF VIDEO ITEMS
When a previous TUNER (VE-30009637) is replaced by a new
TUNER (VE-30033888), it should be adjusted to the setting
values in the table below. If the TUNER of the model with the new
TUNER (VE-30033888) is replaced, there is no need for
adjustment.
4.1.1 SETTING VALUE OF VIDEO ITEM
Make sure not to change the values that are not in the table
below. If those values are changed, the unit will not operate
normally.
Item
T_T THO SAM
BEFORE AFTER
Setting value
1-2 (No.YA086B)
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4.1.2 HOW TO ENTER THE SERVICE MODE
(1) Press the INFORMATION key and MUTING key
simultaneously, and the SERVICE MENU 1 screen will be
displayed. (Fig.1)
SERVICE MENU 1
PRODUCTION i >STORE MENU>EXIT
H/V (FULL MODE)
V-SHIFT
V-SIZE
H-SHIFT
H-SIZE
S-COR
LINRT
ANGLE
BOW
TRAPEZ
PARAB
U.COR
L.COR
TILT
TRPZD
NTSCHS
TXTV
HS04_3
JVC52 ****
**.**.****
****
****
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
VIDEO
WdR
WdG
WdB
CuR
CuG
CuB
G2Cu
YDP
AGC
APSW
APS
T_T
T_P
YDS
YDN
EXT3
DVD
C.M
4:3
SERVICE
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
Fig.1
REMOTE CONTROL UNIT key NAME
MUTE key
colour key
RED
GREEN
YELLOW
BLUE
TELETEXT key
4.1.3 HOW TO CHANGE THE SETTING VALUE
(1) While the SERVICE MENU screen is displayed, press the
GREEN key to select the "VIDEO".
(2) Press the FUNCTION []/[] key to select the "T_T".
(3) Press the FUNCTION []/[] key to set the value to
"SAM".
(4) Press the [INFORMATION] key to memorize the set value.
SERVICE MENU 1
PRODUCTION i >STORE MENU>EXIT
H/V (FULL MODE)
V-SHIFT
V-SIZE
H-SHIFT
H-SIZE
S-COR
LINRT
ANGLE
BOW
TRAPEZ
PARAB
U.COR
L.COR
TILT
TRPZD
NTSCHS
TXTV
HS04_3
JVC52 ****
**.**.****
****
***
****
***
***
***
***
***
***
***
***
***
***
***
***
***
***
VIDEO
WdR
WdG
WdB
CuR
CuG
CuB
G2Cu
YDP
AGC
APSW
APS
T_T
T_P
YDS
YDN
EXT3
DVD
C.M
4:3
SERVICE
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
THO
SAM
Fig.2
SECTION 5
UP / DOWN
[ ]/[ ] key
LEFT / RIGHT
[ ]/[ ] key
INFORMATION key
MENU key
TROUBLESHOOTING
Please refer to "AV-29QH4BU and AV-29QH4SU (No.YA086)" about this section.
(No.YA086B)1-3
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Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.YA086B)
Printed in Japan
VPT
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