JVC AV-21E3 Service Manual page 12

AV-21E3
REPLACEMENT OF IC301 (IF V/C DECODER)
" For the IC301(IF V/C DECODER) of this model, all data are written in the micr o-computer. So, write the data in the micro-
computer in accordance with the following procedures before starting adjustment.
PROCEDURES
(1) Turn the POWER OFF.
(2) Replace the IC301 with a new one.
(3) While pressing MENU button and VOL+ button ON the FRONT CABINET s imultaneous ly, turn the POW ER ON. When the POWER is
turned ON, the data is written in the micro-computer immediately.
LOCATIONS OF FRONT PANEL BUTTONS AND LAM PS
1 2
12
3 4 5 6 7 8
No. 52028
1 MENU buttons MENU buttons
CHANNEL ･ / ･ buttons CHANNEL －/＋buttons
2
(MENU ･ / ･ (MENU －/＋buttons) buttons)
VOLUME － / ＋ buttons VOLUME － / ＋ buttons
3
(MENU － / ＋ buttons) (MENU － / ＋ buttons)
AI ECO sensor AI ECO sensor
4
REMOTE CONTROL sens or REMOTE CONTROL sens or
5
ON TIMER lamp ON TIMER lamp
6
POWER lamp POWER lamp
7
MAIN POW ER button MAIN POW ER button
8