JVC AV-21BT8ENS Service Manual page 11

SERVICE ADJUSTMENTS
ADJUSTMENT PREPARATION
1. You can make the necessary adjustments for this unit with
either the Rem ote Control Unit or with the adjustment tools
and par ts as given below.
2. Ad justment with the Remote Control Unit is made on the
basis of the initial setting values, however, the new setting
values which set the screen to its optimum condition may
differ from the initial settings.
3. Make sure that AC power is turned on c orrec tly.
4. Turn on the power for s et and test equipment before use, and
start the adjustment procedures after waiting at least 30 minutes.
5. Unless otherwise s pec ified, prepare the most suitable reception
or input signal for adjustment.
ADJUSTMENT EQUIPMENT
1. DC voltmeter (or digital voltmeter)
2. Signal generator (Pattern generator) ［PAL/SECAM/NTSC］
3. Remote control unit
MAIN PARTS LOCATIONS
FRONT
FRONT AV PWB
SIDE
HEADPHONE PWB
TOP
CRT SOCKET PWB
6. Never touc h any adjustment parts which are not spec ified in the
list for this adjustment - variable res istors, transformers,
condensers, etc.
7. Pres etting before adjustment.
Unless otherwise spec ified in the adjustment instructions, preset
the following functions with the remote c ontrol unit:
BRIGHTNESS
CONTRAST
COLOUR
SHARPNESS
ADJUSTMENT ITEM
! SCREEN ADJUST MENT
! OSD HORIZONTAL POSITION ADJ USTMENT
! IF ADJUSTMENT
! AGC AUTOMATICALLY ADJUSTMENT
! DEFLECTION CIRCUIT ADJUSTMENT
! GEOMET RY MENU ADJUSTMENT
! WHITE BALANCE ADJUSTMENT
FRONT
MAIN PWB
No. 52054
AV-21BT8ENS AV-21BT8ENB
AV-21BT8EPS AV-21BT8EPB
AV-21BT8EES AV-21BT8EEB
AV-21BT80EP
CENTER
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