JVC AV-29BF11ENS Service Manual page 16

AV-29BF11ENS
AV-29BF11EPS
AV-29BF11EES
■ ■ ■ ■ AGC AUTOMATICALLY ADJUSTMENT
Measuring
Item
instrument
AGC Remote
AUTOMATIC- control unit
ALLY
adjustment
SERVICE MENU SCREEN
& check
JVCAK30/37
OSD
IF1
IF2
IF3
IF4
AGC
VLIN
RGBH
VSOF
VPOF
: 1 1
■ ■ ■ ■ DEFLECTION CIRCUIT ADJUSTMENT
Measuring
Item
instrument
RGB MODE Signal
HORIZONTAL generator
SHIFT
OFFSET Remote
adjustment control unit
A
VERTICAL Signal
SIZE OFFSET generator
adjustment
Remote
(60Hz)
control unit
Very close
Screen
size
Very close
16
Test point Adjustment part
AGC
B04
059
004
065
004
065
033
044
005
+05
-01
Test point Adjustment part
RGBH
B
VSOF
1. Enter SERVICE MENU.
2. Receive a 60dBμV RF signal level.
3. Select AGC with the FUNCTION ( / ) key.
4. Press BLUE key on the remote control unit.
5. Then the adjustment will be done automatically by software.
6. See the AGC indicator on SERVICE MENU, it must be "1".
7. Check that picture is normal at 90dBμV signal level.
: 1
IF INDICATOR AGC INDICATOR
1. Input R/G/B circle pattern signal via video input terminal.
2. Press AV key on the remote control unit, force the TV to RGB
mode.
3. Enter SERVICE MENU.
4. Select RGBH (RGB mode horizontal shift) with the
FUNCTION ( / ) key.
5. Adjust RGBH with the FUNCTION ( / ) key until the circle
pattern is horizontally centered.(A=B)
6. Check and readjust RGBH item if the adjustment becomes
improper after some other geometric adjustments are done.
1. Receive a NTSC-M cross-hatch pattern of vertical frequency
60Hz.
2. Enter SERVICE MENU.
3. Select VSOF (Vertical size) with the FUNCTION ( / ) key.
4. Adjust VSOF with the FUNCTION (
horizontal black lines on both the upper and lower part of the
pattern become very close to the upper and lower horizontal
sides of picture size and nearly about to disappear.
5. Check and readjust VSOF item if the adjustment becomes
improper after some other geometric adjustments are done.
Picture
size
100%
No. 52084
Description
1
NONE
Description
/ ) key until the